/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/pp4.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:47:27,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:47:27,553 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:47:27,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:47:27,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:47:27,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:47:27,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:47:27,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:47:27,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:47:27,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:47:27,578 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:47:27,578 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:47:27,578 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:47:27,578 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:47:27,578 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:47:27,578 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:47:27,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:47:27,579 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:47:27,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:47:27,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:47:27,580 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:47:27,580 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:47:27,580 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:47:27,580 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:47:27,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:47:27,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:47:27,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:47:27,822 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:47:27,823 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:47:27,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pp4.c.bpl [2025-02-17 22:47:27,825 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pp4.c.bpl' [2025-02-17 22:47:27,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:47:27,842 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:47:27,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:47:27,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:47:27,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:47:27,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:27" (1/1) ... [2025-02-17 22:47:27,856 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:27" (1/1) ... [2025-02-17 22:47:27,860 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:47:27,861 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:47:27,862 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:47:27,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:47:27,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:47:27,868 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:27" (1/1) ... [2025-02-17 22:47:27,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:27" (1/1) ... [2025-02-17 22:47:27,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:27" (1/1) ... [2025-02-17 22:47:27,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:27" (1/1) ... [2025-02-17 22:47:27,872 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:27" (1/1) ... [2025-02-17 22:47:27,872 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:27" (1/1) ... [2025-02-17 22:47:27,876 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:27" (1/1) ... [2025-02-17 22:47:27,876 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:27" (1/1) ... [2025-02-17 22:47:27,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:27" (1/1) ... [2025-02-17 22:47:27,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:47:27,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:47:27,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:47:27,879 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:47:27,880 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:27" (1/1) ... [2025-02-17 22:47:27,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:27,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:27,906 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 22:47:27,910 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 22:47:27,931 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:47:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:47:27,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:47:27,931 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:47:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:47:27,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:47:27,932 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:47:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:47:27,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:47:27,932 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:47:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:47:27,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:47:27,932 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:47:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:47:27,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:47:27,932 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 22:47:27,969 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:47:27,971 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:47:28,065 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:47:28,066 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:47:28,077 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:47:28,077 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:47:28,078 INFO L201 PluginConnector]: Adding new model pp4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:47:28 BoogieIcfgContainer [2025-02-17 22:47:28,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:47:28,078 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:47:28,078 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:47:28,084 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:47:28,085 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:47:28,085 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:27" (1/2) ... [2025-02-17 22:47:28,087 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f6cbaf7 and model type pp4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:47:28, skipping insertion in model container [2025-02-17 22:47:28,087 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:47:28,087 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:47:28" (2/2) ... [2025-02-17 22:47:28,088 INFO L363 chiAutomizerObserver]: Analyzing ICFG pp4.c.bpl [2025-02-17 22:47:28,160 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-17 22:47:28,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 42 transitions, 112 flow [2025-02-17 22:47:28,210 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-02-17 22:47:28,212 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-17 22:47:28,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 34 events. 4/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 96 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-17 22:47:28,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 42 transitions, 112 flow [2025-02-17 22:47:28,219 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 34 transitions, 92 flow [2025-02-17 22:47:28,228 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:47:28,228 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:47:28,228 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:47:28,228 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:47:28,228 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:47:28,228 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:47:28,228 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:47:28,229 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:47:28,230 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:47:28,568 INFO L131 ngComponentsAnalysis]: Automaton has 265 accepting balls. 1653 [2025-02-17 22:47:28,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:28,568 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:28,572 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:47:28,572 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:47:28,573 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:47:28,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 1815 states, but on-demand construction may add more states [2025-02-17 22:47:28,615 INFO L131 ngComponentsAnalysis]: Automaton has 265 accepting balls. 1653 [2025-02-17 22:47:28,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:28,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:28,615 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:47:28,615 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:47:28,619 INFO L752 eck$LassoCheckResult]: Stem: "[73] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[106] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:47:28,620 INFO L754 eck$LassoCheckResult]: Loop: "[81] L27-->L29: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[83] L29-->L30: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[85] L30-->L27: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-02-17 22:47:28,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:28,623 INFO L85 PathProgramCache]: Analyzing trace with hash 3330, now seen corresponding path program 1 times [2025-02-17 22:47:28,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:28,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131020065] [2025-02-17 22:47:28,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:28,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:28,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:28,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:28,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:28,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:28,672 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:28,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:28,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:28,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:28,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:28,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:28,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:28,691 INFO L85 PathProgramCache]: Analyzing trace with hash 110290, now seen corresponding path program 1 times [2025-02-17 22:47:28,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:28,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624403340] [2025-02-17 22:47:28,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:28,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:28,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:28,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:28,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:28,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:28,699 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:28,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:28,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:28,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:28,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:28,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:28,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash 99284529, now seen corresponding path program 1 times [2025-02-17 22:47:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:28,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448079235] [2025-02-17 22:47:28,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:28,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:28,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:28,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:28,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:28,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:28,712 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:28,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:28,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:28,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:28,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:28,717 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:28,764 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:28,764 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:28,764 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:28,765 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:28,765 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:28,765 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:28,766 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:28,766 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:28,766 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:47:28,766 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:28,766 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:28,775 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:28,782 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:28,816 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:28,817 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:28,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:28,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:28,820 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 22:47:28,822 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 22:47:28,824 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:28,824 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:28,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:47:28,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:28,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:28,845 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 22:47:28,846 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 22:47:28,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:28,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:28,885 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:47:28,886 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-02-17 22:47:28,891 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 22:47:28,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:28,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:28,894 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 22:47:28,895 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 22:47:28,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:28,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:28,914 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 22:47:28,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:28,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:28,917 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 22:47:28,918 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 22:47:28,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:28,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:28,988 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:28,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:28,992 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:28,992 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:28,992 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:28,992 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:28,993 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:28,993 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:28,993 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:28,993 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:28,993 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:47:28,993 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:28,993 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:28,994 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:28,997 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:29,037 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:29,040 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:29,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:29,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:29,045 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 22:47:29,046 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 22:47:29,047 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 22:47:29,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:29,058 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:29,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:29,059 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:29,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:29,061 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:29,062 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:29,067 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:47:29,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-17 22:47:29,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:29,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:29,075 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 22:47:29,076 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 22:47:29,076 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 22:47:29,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:29,086 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:29,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:29,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:29,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:29,087 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:29,087 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:29,090 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:29,093 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:47:29,093 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:47:29,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:29,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:29,096 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 22:47:29,097 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 22:47:29,099 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:29,100 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:29,100 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:29,100 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-02-17 22:47:29,105 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 22:47:29,108 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:29,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:29,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:29,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:29,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:29,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:29,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:29,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:29,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:29,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:29,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:29,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:29,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:29,179 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:29,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:29,238 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 22:47:29,255 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:47:29,258 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 1815 states, but on-demand construction may add more states Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:29,472 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 1815 states, but on-demand construction may add more states. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 4406 states and 18422 transitions. Complement of second has 6 states. [2025-02-17 22:47:29,475 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 22:47:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2025-02-17 22:47:29,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 79 transitions. Stem has 2 letters. Loop has 3 letters. [2025-02-17 22:47:29,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:29,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 79 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:47:29,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:29,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 79 transitions. Stem has 2 letters. Loop has 6 letters. [2025-02-17 22:47:29,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:29,488 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4406 states and 18422 transitions. [2025-02-17 22:47:29,563 INFO L131 ngComponentsAnalysis]: Automaton has 315 accepting balls. 1533 [2025-02-17 22:47:29,623 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4406 states to 3004 states and 12804 transitions. [2025-02-17 22:47:29,624 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1612 [2025-02-17 22:47:29,637 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2077 [2025-02-17 22:47:29,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3004 states and 12804 transitions. [2025-02-17 22:47:29,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:29,638 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3004 states and 12804 transitions. [2025-02-17 22:47:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states and 12804 transitions. [2025-02-17 22:47:29,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 2540. [2025-02-17 22:47:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2540 states have (on average 4.225984251968504) internal successors, (10734), 2539 states have internal predecessors, (10734), 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 22:47:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 10734 transitions. [2025-02-17 22:47:29,805 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2540 states and 10734 transitions. [2025-02-17 22:47:29,805 INFO L432 stractBuchiCegarLoop]: Abstraction has 2540 states and 10734 transitions. [2025-02-17 22:47:29,805 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:47:29,805 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2540 states and 10734 transitions. [2025-02-17 22:47:29,824 INFO L131 ngComponentsAnalysis]: Automaton has 315 accepting balls. 1533 [2025-02-17 22:47:29,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:29,824 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:29,825 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:47:29,825 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:47:29,825 INFO L752 eck$LassoCheckResult]: Stem: "[73] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[106] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[109] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:47:29,826 INFO L754 eck$LassoCheckResult]: Loop: "[87] L38-->L40: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[89] L40-->L41: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[91] L41-->L38: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-02-17 22:47:29,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:29,826 INFO L85 PathProgramCache]: Analyzing trace with hash 103339, now seen corresponding path program 1 times [2025-02-17 22:47:29,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:29,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58547231] [2025-02-17 22:47:29,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:29,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:29,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:29,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:29,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:29,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:29,832 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:29,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:29,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:29,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:29,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:29,837 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:29,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:29,838 INFO L85 PathProgramCache]: Analyzing trace with hash 116248, now seen corresponding path program 1 times [2025-02-17 22:47:29,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:29,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198343183] [2025-02-17 22:47:29,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:29,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:29,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:29,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:29,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:29,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:29,843 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:29,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:29,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:29,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:29,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:29,846 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:29,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:29,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1216308690, now seen corresponding path program 1 times [2025-02-17 22:47:29,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:29,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840275572] [2025-02-17 22:47:29,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:29,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:29,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:29,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:29,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:29,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:29,850 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:29,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:29,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:29,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:29,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:29,857 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:29,884 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:29,885 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:29,885 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:29,885 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:29,885 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:29,885 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:29,885 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:29,885 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:29,885 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:47:29,885 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:29,885 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:29,885 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:29,890 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:29,916 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:29,916 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:29,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:29,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:29,919 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 22:47:29,920 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 22:47:29,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:29,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:29,939 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 22:47:29,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:29,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:29,942 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 22:47:29,942 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 22:47:29,944 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:29,944 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:29,977 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:47:29,977 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-02-17 22:47:29,983 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 22:47:29,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:29,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:29,985 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 22:47:29,986 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 22:47:29,988 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:29,988 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:30,004 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 22:47:30,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:30,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:30,007 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 22:47:30,008 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 22:47:30,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:30,010 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:30,074 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:30,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-17 22:47:30,079 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:30,079 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:30,079 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:30,079 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:30,079 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:30,079 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:30,079 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:30,079 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:30,079 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:47:30,080 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:30,080 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:30,080 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:30,087 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:30,111 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:30,111 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:30,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:30,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:30,115 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 22:47:30,116 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 22:47:30,118 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 22:47:30,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:30,127 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:30,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:30,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:30,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:30,129 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:30,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:30,131 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:47:30,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:30,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:30,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:30,138 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 22:47:30,138 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 22:47:30,139 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 22:47:30,149 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:30,149 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:30,149 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:30,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:30,149 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:30,150 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:30,150 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:30,152 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:30,154 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:47:30,154 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:47:30,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:30,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:30,156 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 22:47:30,157 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 22:47:30,158 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:30,158 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:30,159 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:30,159 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-02-17 22:47:30,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-17 22:47:30,165 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:30,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:30,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:30,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:30,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:30,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:30,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:30,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:30,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:30,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:30,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:30,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:30,189 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:30,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:30,223 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 22:47:30,224 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:47:30,225 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2540 states and 10734 transitions. cyclomatic complexity: 8567 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 22:47:30,312 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 22:47:30,373 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2540 states and 10734 transitions. cyclomatic complexity: 8567. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 6600 states and 29189 transitions. Complement of second has 6 states. [2025-02-17 22:47:30,373 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 22:47:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 22:47:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-02-17 22:47:30,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 83 transitions. Stem has 3 letters. Loop has 3 letters. [2025-02-17 22:47:30,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:30,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 83 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-17 22:47:30,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:30,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 83 transitions. Stem has 3 letters. Loop has 6 letters. [2025-02-17 22:47:30,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:30,374 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6600 states and 29189 transitions. [2025-02-17 22:47:30,476 INFO L131 ngComponentsAnalysis]: Automaton has 338 accepting balls. 1272 [2025-02-17 22:47:30,562 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6600 states to 4392 states and 19571 transitions. [2025-02-17 22:47:30,564 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1666 [2025-02-17 22:47:30,577 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2139 [2025-02-17 22:47:30,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4392 states and 19571 transitions. [2025-02-17 22:47:30,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:30,578 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4392 states and 19571 transitions. [2025-02-17 22:47:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states and 19571 transitions. [2025-02-17 22:47:30,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 3919. [2025-02-17 22:47:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3919 states, 3919 states have (on average 4.477417708599132) internal successors, (17547), 3918 states have internal predecessors, (17547), 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 22:47:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 17547 transitions. [2025-02-17 22:47:30,768 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3919 states and 17547 transitions. [2025-02-17 22:47:30,769 INFO L432 stractBuchiCegarLoop]: Abstraction has 3919 states and 17547 transitions. [2025-02-17 22:47:30,769 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:47:30,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3919 states and 17547 transitions. [2025-02-17 22:47:30,794 INFO L131 ngComponentsAnalysis]: Automaton has 338 accepting balls. 1272 [2025-02-17 22:47:30,794 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:30,794 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:30,795 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:47:30,795 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:47:30,795 INFO L752 eck$LassoCheckResult]: Stem: "[73] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[106] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[109] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[112] L15-->L49: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:47:30,796 INFO L754 eck$LassoCheckResult]: Loop: "[93] L49-->L51: Formula: (< v_y1_1 v_z1_3) InVars {y1=v_y1_1, z1=v_z1_3} OutVars{y1=v_y1_1, z1=v_z1_3} AuxVars[] AssignedVars[]" "[95] L51-->L52: Formula: (= v_y1_2 (+ v_y1_3 1)) InVars {y1=v_y1_3} OutVars{y1=v_y1_2} AuxVars[] AssignedVars[y1]" "[97] L52-->L49: Formula: (= v_c_5 (+ v_c_6 1)) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-02-17 22:47:30,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:30,796 INFO L85 PathProgramCache]: Analyzing trace with hash 3203621, now seen corresponding path program 1 times [2025-02-17 22:47:30,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:30,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048456123] [2025-02-17 22:47:30,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:30,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:30,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:30,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:30,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:30,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:30,802 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:30,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:30,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:30,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:30,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:30,807 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:30,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:30,807 INFO L85 PathProgramCache]: Analyzing trace with hash 122206, now seen corresponding path program 1 times [2025-02-17 22:47:30,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:30,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439201114] [2025-02-17 22:47:30,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:30,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:30,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:30,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:30,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:30,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:30,811 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:30,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:30,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:30,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:30,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:30,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:30,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:30,814 INFO L85 PathProgramCache]: Analyzing trace with hash 949885114, now seen corresponding path program 1 times [2025-02-17 22:47:30,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:30,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563995247] [2025-02-17 22:47:30,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:30,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:30,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:47:30,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:47:30,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:30,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:30,824 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:30,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:47:30,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:47:30,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:30,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:30,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:30,856 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:30,856 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:30,856 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:30,856 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:30,856 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:30,856 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:30,856 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:30,856 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:30,856 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:47:30,856 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:30,856 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:30,858 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:30,861 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:30,889 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:30,890 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:30,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:30,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:30,893 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 22:47:30,894 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 22:47:30,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:30,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:30,911 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 22:47:30,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:30,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:30,914 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 22:47:30,915 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 22:47:30,917 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:30,917 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:30,949 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:47:30,949 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-02-17 22:47:30,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-17 22:47:30,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:30,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:30,957 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 22:47:30,958 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 22:47:30,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:30,959 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:30,978 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 22:47:30,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:30,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:30,981 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 22:47:30,981 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 22:47:30,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:30,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:31,048 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:31,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:31,052 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:31,052 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:31,053 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:31,053 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:31,053 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:31,053 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:31,053 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:31,053 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:31,053 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:47:31,053 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:31,053 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:31,053 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:31,057 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:31,079 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:31,080 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:31,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:31,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:31,082 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 22:47:31,083 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 22:47:31,085 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 22:47:31,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:31,095 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:31,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:31,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:31,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:31,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:31,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:31,100 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:47:31,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:31,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:31,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:31,108 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 22:47:31,109 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 22:47:31,110 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 22:47:31,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:31,120 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:31,120 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:31,120 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:31,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:31,121 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:31,121 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:31,127 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:31,130 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:47:31,130 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:47:31,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:31,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:31,132 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 22:47:31,134 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 22:47:31,137 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:31,137 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:31,138 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:31,138 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y1, z1) = -1*y1 + 1*z1 Supporting invariants [] [2025-02-17 22:47:31,143 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 22:47:31,143 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:31,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:31,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:31,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:31,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:31,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:31,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:31,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:31,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:31,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:31,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:31,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:31,176 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:31,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:31,205 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 22:47:31,206 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:47:31,206 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 3919 states and 17547 transitions. cyclomatic complexity: 14130 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:31,393 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 3919 states and 17547 transitions. cyclomatic complexity: 14130. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11279 states and 52618 transitions. Complement of second has 6 states. [2025-02-17 22:47:31,393 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 22:47:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2025-02-17 22:47:31,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 89 transitions. Stem has 4 letters. Loop has 3 letters. [2025-02-17 22:47:31,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:31,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 89 transitions. Stem has 7 letters. Loop has 3 letters. [2025-02-17 22:47:31,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:31,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 89 transitions. Stem has 4 letters. Loop has 6 letters. [2025-02-17 22:47:31,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:31,395 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11279 states and 52618 transitions. [2025-02-17 22:47:31,496 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 22:47:31,581 INFO L131 ngComponentsAnalysis]: Automaton has 259 accepting balls. 777 [2025-02-17 22:47:31,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11279 states to 5981 states and 28072 transitions. [2025-02-17 22:47:31,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1652 [2025-02-17 22:47:31,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2053 [2025-02-17 22:47:31,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5981 states and 28072 transitions. [2025-02-17 22:47:31,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:31,672 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5981 states and 28072 transitions. [2025-02-17 22:47:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states and 28072 transitions. [2025-02-17 22:47:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 5385. [2025-02-17 22:47:31,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5385 states, 5385 states have (on average 4.741132776230269) internal successors, (25531), 5384 states have internal predecessors, (25531), 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 22:47:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 25531 transitions. [2025-02-17 22:47:31,906 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5385 states and 25531 transitions. [2025-02-17 22:47:31,906 INFO L432 stractBuchiCegarLoop]: Abstraction has 5385 states and 25531 transitions. [2025-02-17 22:47:31,906 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:47:31,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5385 states and 25531 transitions. [2025-02-17 22:47:31,934 INFO L131 ngComponentsAnalysis]: Automaton has 259 accepting balls. 777 [2025-02-17 22:47:31,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:31,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:31,935 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:47:31,935 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:47:31,935 INFO L752 eck$LassoCheckResult]: Stem: "[73] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[106] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[109] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[112] L15-->L49: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[115] L16-->L60: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" [2025-02-17 22:47:31,935 INFO L754 eck$LassoCheckResult]: Loop: "[99] L60-->L62: Formula: (< v_y2_1 v_z1_5) InVars {y2=v_y2_1, z1=v_z1_5} OutVars{y2=v_y2_1, z1=v_z1_5} AuxVars[] AssignedVars[]" "[101] L62-->L63: Formula: (= v_y2_2 (+ v_y2_3 1)) InVars {y2=v_y2_3} OutVars{y2=v_y2_2} AuxVars[] AssignedVars[y2]" "[103] L63-->L60: Formula: (= v_c_7 (+ v_c_8 1)) InVars {c=v_c_8} OutVars{c=v_c_7} AuxVars[] AssignedVars[c]" [2025-02-17 22:47:31,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:31,936 INFO L85 PathProgramCache]: Analyzing trace with hash 99312366, now seen corresponding path program 1 times [2025-02-17 22:47:31,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:31,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473649849] [2025-02-17 22:47:31,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:31,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:31,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:31,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:31,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:31,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:31,941 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:31,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:31,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:31,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:31,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:31,947 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:31,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:31,948 INFO L85 PathProgramCache]: Analyzing trace with hash 128164, now seen corresponding path program 1 times [2025-02-17 22:47:31,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:31,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619757224] [2025-02-17 22:47:31,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:31,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:31,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:31,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:31,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:31,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:31,951 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:31,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:31,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:31,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:31,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:31,959 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:31,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:31,959 INFO L85 PathProgramCache]: Analyzing trace with hash -617673065, now seen corresponding path program 1 times [2025-02-17 22:47:31,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:31,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731833281] [2025-02-17 22:47:31,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:31,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:31,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:47:31,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:47:31,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:31,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:31,963 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:31,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:47:31,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:47:31,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:31,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:31,974 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:31,994 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:31,994 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:31,994 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:31,994 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:31,994 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:31,995 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:31,995 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:31,995 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:31,995 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:47:31,995 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:31,995 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:31,995 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:32,000 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:32,022 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:32,022 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:32,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:32,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:32,025 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 22:47:32,027 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 22:47:32,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:32,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:32,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:32,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:32,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:32,051 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 22:47:32,052 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 22:47:32,053 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:32,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:32,119 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:32,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:32,123 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:32,124 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:32,124 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:32,124 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:32,124 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:32,124 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:32,124 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:32,124 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:32,124 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:47:32,124 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:32,124 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:32,124 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:32,131 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:32,152 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:32,152 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:32,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:32,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:32,156 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 22:47:32,157 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 22:47:32,158 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 22:47:32,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:32,168 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:32,168 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:32,168 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:32,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:32,169 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:32,169 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:32,170 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:32,176 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:47:32,176 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:47:32,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:32,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:32,178 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 22:47:32,180 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 22:47:32,182 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:32,182 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:32,182 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:32,182 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y2, z1) = -1*y2 + 1*z1 Supporting invariants [] [2025-02-17 22:47:32,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:32,188 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:32,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:32,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:32,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:32,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:32,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:32,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:32,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:32,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:32,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:32,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:32,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:32,221 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:32,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:32,248 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 22:47:32,248 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:47:32,248 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5385 states and 25531 transitions. cyclomatic complexity: 20700 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:32,374 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 22:47:32,512 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5385 states and 25531 transitions. cyclomatic complexity: 20700. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14993 states and 73543 transitions. Complement of second has 6 states. [2025-02-17 22:47:32,513 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 22:47:32,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:32,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-02-17 22:47:32,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 91 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:47:32,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:32,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 91 transitions. Stem has 8 letters. Loop has 3 letters. [2025-02-17 22:47:32,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:32,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 91 transitions. Stem has 5 letters. Loop has 6 letters. [2025-02-17 22:47:32,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:32,515 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14993 states and 73543 transitions. [2025-02-17 22:47:32,725 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:47:32,726 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14993 states to 0 states and 0 transitions. [2025-02-17 22:47:32,726 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:47:32,726 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:47:32,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:47:32,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:47:32,726 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:32,726 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:32,726 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:32,726 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:47:32,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:47:32,726 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:47:32,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:47:32,733 INFO L201 PluginConnector]: Adding new model pp4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:47:32 BoogieIcfgContainer [2025-02-17 22:47:32,733 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:47:32,734 INFO L158 Benchmark]: Toolchain (without parser) took 4892.06ms. Allocated memory was 159.4MB in the beginning and 327.2MB in the end (delta: 167.8MB). Free memory was 85.4MB in the beginning and 65.7MB in the end (delta: 19.8MB). Peak memory consumption was 188.6MB. Max. memory is 8.0GB. [2025-02-17 22:47:32,734 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.73ms. Allocated memory is still 159.4MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:47:32,735 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.66ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 84.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:47:32,735 INFO L158 Benchmark]: Boogie Preprocessor took 15.44ms. Allocated memory is still 159.4MB. Free memory was 84.1MB in the beginning and 83.5MB in the end (delta: 607.7kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-02-17 22:47:32,735 INFO L158 Benchmark]: RCFGBuilder took 199.13ms. Allocated memory is still 159.4MB. Free memory was 83.3MB in the beginning and 74.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:47:32,736 INFO L158 Benchmark]: BuchiAutomizer took 4655.09ms. Allocated memory was 159.4MB in the beginning and 327.2MB in the end (delta: 167.8MB). Free memory was 74.0MB in the beginning and 65.7MB in the end (delta: 8.3MB). Peak memory consumption was 176.0MB. Max. memory is 8.0GB. [2025-02-17 22:47:32,736 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 0.73ms. Allocated memory is still 159.4MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.66ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 84.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 15.44ms. Allocated memory is still 159.4MB. Free memory was 84.1MB in the beginning and 83.5MB in the end (delta: 607.7kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 199.13ms. Allocated memory is still 159.4MB. Free memory was 83.3MB in the beginning and 74.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 4655.09ms. Allocated memory was 159.4MB in the beginning and 327.2MB in the end (delta: 167.8MB). Free memory was 74.0MB in the beginning and 65.7MB in the end (delta: 8.3MB). Peak memory consumption was 176.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z1 and consists of 4 locations. One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + z1 and consists of 4 locations. One deterministic module has affine ranking function -1 * y2 + z1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.1s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.6s AutomataMinimizationTime, 3 MinimizatonAttempts, 1533 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.8s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 241 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 237 mSDsluCounter, 373 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 202 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 172 IncrementalHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 171 mSDtfsCounter, 172 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s 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 22:47:32,748 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...