/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/pc6.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:26:12,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:26:12,515 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:26:12,520 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:26:12,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:26:12,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:26:12,547 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:26:12,547 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:26:12,548 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:26:12,548 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:26:12,548 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:26:12,548 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:26:12,548 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:26:12,548 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:26:12,548 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:26:12,548 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:26:12,548 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:26:12,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:26:12,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:26:12,548 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:26:12,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:26:12,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:26:12,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:26:12,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:26:12,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:26:12,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:26:12,549 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:26:12,549 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:26:12,549 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:26:12,549 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:26:12,549 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:26:12,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:26:12,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:26:12,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:26:12,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:26:12,550 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:26:12,550 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:26:12,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:26:12,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:26:12,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:26:12,792 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:26:12,793 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:26:12,793 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pc6.c.bpl [2025-04-26 16:26:12,794 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pc6.c.bpl' [2025-04-26 16:26:12,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:26:12,813 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:26:12,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:26:12,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:26:12,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:26:12,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:12" (1/1) ... [2025-04-26 16:26:12,841 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:12" (1/1) ... [2025-04-26 16:26:12,847 INFO L138 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:26:12,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:26:12,849 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:26:12,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:26:12,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:26:12,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:12" (1/1) ... [2025-04-26 16:26:12,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:12" (1/1) ... [2025-04-26 16:26:12,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:12" (1/1) ... [2025-04-26 16:26:12,855 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:12" (1/1) ... [2025-04-26 16:26:12,858 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:12" (1/1) ... [2025-04-26 16:26:12,859 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:12" (1/1) ... [2025-04-26 16:26:12,862 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:12" (1/1) ... [2025-04-26 16:26:12,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:12" (1/1) ... [2025-04-26 16:26:12,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:12" (1/1) ... [2025-04-26 16:26:12,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:26:12,875 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:26:12,875 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:26:12,875 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:26:12,876 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:12" (1/1) ... [2025-04-26 16:26:12,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:12,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:12,910 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) [2025-04-26 16:26:12,917 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 [2025-04-26 16:26:12,935 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:26:12,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:26:12,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:26:12,936 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:26:12,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:26:12,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:26:12,936 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:26:12,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:26:12,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:26:12,936 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:26:12,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:26:12,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:26:12,936 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:26:12,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:26:12,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:26:12,936 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 16:26:12,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 16:26:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 16:26:12,937 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-04-26 16:26:12,937 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-26 16:26:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-26 16:26:12,937 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:26:12,976 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:26:12,978 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:26:13,094 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:26:13,094 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:26:13,105 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:26:13,105 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:26:13,106 INFO L201 PluginConnector]: Adding new model pc6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:26:13 BoogieIcfgContainer [2025-04-26 16:26:13,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:26:13,107 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:26:13,107 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:26:13,114 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:26:13,115 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:26:13,115 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:12" (1/2) ... [2025-04-26 16:26:13,116 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b866b46 and model type pc6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:26:13, skipping insertion in model container [2025-04-26 16:26:13,116 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:26:13,116 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:26:13" (2/2) ... [2025-04-26 16:26:13,117 INFO L376 chiAutomizerObserver]: Analyzing ICFG pc6.c.bpl [2025-04-26 16:26:13,195 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-04-26 16:26:13,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 62 transitions, 166 flow [2025-04-26 16:26:13,252 INFO L116 PetriNetUnfolderBase]: 6/50 cut-off events. [2025-04-26 16:26:13,253 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-26 16:26:13,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 50 events. 6/50 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 126 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2025-04-26 16:26:13,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 62 transitions, 166 flow [2025-04-26 16:26:13,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 136 flow [2025-04-26 16:26:13,267 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 63 places, 50 transitions, 136 flow [2025-04-26 16:26:13,275 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:26:13,275 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:26:13,275 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:26:13,276 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:26:13,276 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:26:13,276 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:26:13,276 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:26:13,276 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:26:13,279 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:26:18,249 INFO L131 ngComponentsAnalysis]: Automaton has 5369 accepting balls. 63861 [2025-04-26 16:26:18,249 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:18,249 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:18,255 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:26:18,255 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:18,256 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:26:18,256 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 65319 states, but on-demand construction may add more states [2025-04-26 16:26:19,927 INFO L131 ngComponentsAnalysis]: Automaton has 5369 accepting balls. 63861 [2025-04-26 16:26:19,927 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:19,927 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:19,930 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:26:19,930 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:19,934 INFO L752 eck$LassoCheckResult]: Stem: "[98] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[165] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" [2025-04-26 16:26:19,934 INFO L754 eck$LassoCheckResult]: Loop: "[122] L34-->L36: 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[]" "[124] L36-->L37: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[126] L37-->L34: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-04-26 16:26:19,939 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:19,939 INFO L85 PathProgramCache]: Analyzing trace with hash 4164, now seen corresponding path program 1 times [2025-04-26 16:26:19,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:19,947 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380878665] [2025-04-26 16:26:19,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:19,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:20,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:26:20,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:26:20,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:20,016 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:20,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:26:20,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:26:20,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:20,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:20,044 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:20,044 INFO L85 PathProgramCache]: Analyzing trace with hash 151003, now seen corresponding path program 1 times [2025-04-26 16:26:20,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:20,044 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211570381] [2025-04-26 16:26:20,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:20,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:20,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:20,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:20,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:20,055 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:20,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:20,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:20,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:20,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:20,068 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:20,069 INFO L85 PathProgramCache]: Analyzing trace with hash 124170936, now seen corresponding path program 1 times [2025-04-26 16:26:20,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:20,069 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813654715] [2025-04-26 16:26:20,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:20,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:20,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:20,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:20,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:20,076 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:20,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:20,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:20,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:20,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:20,143 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:20,144 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:20,144 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:20,144 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:20,144 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:20,144 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,144 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:20,144 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:20,144 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:26:20,145 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:20,145 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:20,155 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:20,163 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:20,208 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:20,209 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:20,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,212 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) [2025-04-26 16:26:20,213 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 [2025-04-26 16:26:20,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:20,214 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:20,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:20,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,235 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) [2025-04-26 16:26:20,237 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 [2025-04-26 16:26:20,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:20,240 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:20,286 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:26:20,286 INFO L403 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] [2025-04-26 16:26:20,292 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 [2025-04-26 16:26:20,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,295 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) [2025-04-26 16:26:20,296 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 [2025-04-26 16:26:20,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:20,299 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:20,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 16:26:20,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,321 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) [2025-04-26 16:26:20,323 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 [2025-04-26 16:26:20,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:20,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:20,392 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:20,396 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 [2025-04-26 16:26:20,396 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:20,396 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:20,396 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:20,396 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:20,397 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:20,397 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,397 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:20,397 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:20,397 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:26:20,397 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:20,397 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:20,398 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:20,401 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:20,433 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:20,436 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:20,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,439 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) [2025-04-26 16:26:20,440 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 [2025-04-26 16:26:20,442 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 [2025-04-26 16:26:20,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:20,452 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:20,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:20,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:20,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:20,456 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:20,456 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:20,458 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:26:20,463 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 [2025-04-26 16:26:20,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,465 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) [2025-04-26 16:26:20,466 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 [2025-04-26 16:26:20,467 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 [2025-04-26 16:26:20,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:20,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:20,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:20,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:20,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:20,478 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:20,478 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:20,480 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:20,483 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:20,483 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:26:20,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,486 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) [2025-04-26 16:26:20,488 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 [2025-04-26 16:26:20,490 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:20,494 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 [2025-04-26 16:26:20,494 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:20,494 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:20,494 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-04-26 16:26:20,503 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 [2025-04-26 16:26:20,506 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:20,525 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:20,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:26:20,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:26:20,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:20,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:20,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:20,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:20,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:20,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:20,628 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:20,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:26:20,751 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 [2025-04-26 16:26:20,759 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 65319 states, but on-demand construction may add more states Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:24,602 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 65319 states, but on-demand construction may add more states. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 158630 states and 999062 transitions. Complement of second has 6 states. [2025-04-26 16:26:24,604 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:26:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2025-04-26 16:26:24,611 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 123 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 16:26:24,611 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:24,611 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 123 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:26:24,611 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:24,612 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 123 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 16:26:24,612 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:24,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158630 states and 999062 transitions. [2025-04-26 16:26:28,261 INFO L131 ngComponentsAnalysis]: Automaton has 7007 accepting balls. 62769 [2025-04-26 16:26:30,895 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158630 states to 120329 states and 771693 transitions. [2025-04-26 16:26:30,896 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64775 [2025-04-26 16:26:31,490 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 83294 [2025-04-26 16:26:31,491 INFO L74 IsDeterministic]: Start isDeterministic. Operand 120329 states and 771693 transitions. [2025-04-26 16:26:31,492 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:31,492 INFO L218 hiAutomatonCegarLoop]: Abstraction has 120329 states and 771693 transitions. [2025-04-26 16:26:31,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120329 states and 771693 transitions. [2025-04-26 16:26:35,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120329 to 101811. [2025-04-26 16:26:36,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101811 states, 101811 states have (on average 6.4035123906061235) internal successors, (in total 651948), 101810 states have internal predecessors, (651948), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101811 states to 101811 states and 651948 transitions. [2025-04-26 16:26:37,274 INFO L240 hiAutomatonCegarLoop]: Abstraction has 101811 states and 651948 transitions. [2025-04-26 16:26:37,275 INFO L438 stractBuchiCegarLoop]: Abstraction has 101811 states and 651948 transitions. [2025-04-26 16:26:37,275 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:26:37,275 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 101811 states and 651948 transitions. [2025-04-26 16:26:38,417 INFO L131 ngComponentsAnalysis]: Automaton has 7007 accepting balls. 62769 [2025-04-26 16:26:38,417 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:38,417 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:38,420 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:26:38,420 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:38,420 INFO L752 eck$LassoCheckResult]: Stem: "[98] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[165] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[168] L17-1-->L45: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" [2025-04-26 16:26:38,420 INFO L754 eck$LassoCheckResult]: Loop: "[128] L45-->L47: 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[]" "[130] L47-->L48: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[132] L48-->L45: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-04-26 16:26:38,421 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:38,421 INFO L85 PathProgramCache]: Analyzing trace with hash 129252, now seen corresponding path program 1 times [2025-04-26 16:26:38,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:38,421 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22884659] [2025-04-26 16:26:38,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:38,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:38,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:38,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:38,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:38,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:38,424 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:38,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:38,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:38,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:38,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:38,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:38,427 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:38,427 INFO L85 PathProgramCache]: Analyzing trace with hash 156961, now seen corresponding path program 1 times [2025-04-26 16:26:38,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:38,427 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043146406] [2025-04-26 16:26:38,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:38,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:38,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:38,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:38,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:38,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:38,429 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:38,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:38,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:38,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:38,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:38,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:38,432 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash -444293794, now seen corresponding path program 1 times [2025-04-26 16:26:38,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:38,432 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336951738] [2025-04-26 16:26:38,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:38,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:38,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:26:38,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:26:38,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:38,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:38,435 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:38,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:26:38,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:26:38,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:38,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:38,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:38,456 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:38,456 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:38,456 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:38,456 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:38,456 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:38,456 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:38,457 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:38,457 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:38,457 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:26:38,457 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:38,457 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:38,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:38,460 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:38,496 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:38,496 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:38,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:38,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:38,499 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) [2025-04-26 16:26:38,500 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 [2025-04-26 16:26:38,503 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:38,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:38,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:38,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:38,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:38,524 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) [2025-04-26 16:26:38,526 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 [2025-04-26 16:26:38,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:38,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:38,557 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:26:38,557 INFO L403 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] [2025-04-26 16:26:38,562 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 [2025-04-26 16:26:38,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:38,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:38,564 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) [2025-04-26 16:26:38,566 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 [2025-04-26 16:26:38,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:38,567 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:38,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 16:26:38,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:38,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:38,584 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) [2025-04-26 16:26:38,585 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 [2025-04-26 16:26:38,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:38,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:38,646 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:38,650 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 [2025-04-26 16:26:38,650 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:38,650 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:38,650 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:38,650 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:38,650 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:38,650 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:38,650 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:38,650 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:38,650 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:26:38,650 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:38,650 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:38,651 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:38,654 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:38,684 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:38,685 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:38,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:38,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:38,687 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) [2025-04-26 16:26:38,688 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 [2025-04-26 16:26:38,689 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 [2025-04-26 16:26:38,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:38,699 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:38,699 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:38,699 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:38,699 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:38,700 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:38,700 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:38,701 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:26:38,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:26:38,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:38,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:38,708 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) [2025-04-26 16:26:38,710 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 [2025-04-26 16:26:38,711 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 [2025-04-26 16:26:38,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:38,721 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:38,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:38,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:38,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:38,722 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:38,722 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:38,723 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:38,726 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:38,726 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:26:38,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:38,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:38,728 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) [2025-04-26 16:26:38,728 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 [2025-04-26 16:26:38,730 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:38,733 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:26:38,733 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 [2025-04-26 16:26:38,734 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:38,734 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:38,734 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-04-26 16:26:38,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:38,739 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:38,758 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:38,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:38,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:38,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:38,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:38,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:38,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:38,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:38,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:38,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:38,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:38,772 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:38,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:26:38,796 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 [2025-04-26 16:26:38,797 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 101811 states and 651948 transitions. cyclomatic complexity: 558437 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:43,366 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 101811 states and 651948 transitions. cyclomatic complexity: 558437. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 260240 states and 1737563 transitions. Complement of second has 6 states. [2025-04-26 16:26:43,367 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:26:43,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:43,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2025-04-26 16:26:43,368 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 3 letters. Loop has 3 letters. [2025-04-26 16:26:43,368 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:43,368 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 16:26:43,368 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:43,368 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 3 letters. Loop has 6 letters. [2025-04-26 16:26:43,368 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:43,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 260240 states and 1737563 transitions. [2025-04-26 16:26:50,453 INFO L131 ngComponentsAnalysis]: Automaton has 9190 accepting balls. 60348 [2025-04-26 16:26:53,920 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 260240 states to 197464 states and 1335137 transitions. [2025-04-26 16:26:53,921 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74993 [2025-04-26 16:26:54,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 95920 [2025-04-26 16:26:54,339 INFO L74 IsDeterministic]: Start isDeterministic. Operand 197464 states and 1335137 transitions. [2025-04-26 16:26:54,339 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:54,339 INFO L218 hiAutomatonCegarLoop]: Abstraction has 197464 states and 1335137 transitions. [2025-04-26 16:26:54,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197464 states and 1335137 transitions. [2025-04-26 16:26:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197464 to 176537. [2025-04-26 16:26:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176537 states, 176537 states have (on average 6.813483858907764) internal successors, (in total 1202832), 176536 states have internal predecessors, (1202832), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:27:01,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176537 states to 176537 states and 1202832 transitions. [2025-04-26 16:27:01,605 INFO L240 hiAutomatonCegarLoop]: Abstraction has 176537 states and 1202832 transitions. [2025-04-26 16:27:01,605 INFO L438 stractBuchiCegarLoop]: Abstraction has 176537 states and 1202832 transitions. [2025-04-26 16:27:01,605 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:27:01,605 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 176537 states and 1202832 transitions. [2025-04-26 16:27:03,408 INFO L131 ngComponentsAnalysis]: Automaton has 9190 accepting balls. 60348 [2025-04-26 16:27:03,408 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:27:03,408 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:27:03,411 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:27:03,411 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:27:03,412 INFO L752 eck$LassoCheckResult]: Stem: "[98] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[165] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[168] L17-1-->L45: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" "[171] L18-->L56: Formula: (and (= v_thread3Thread1of1ForFork4_thidvar0_2 3) (= v_thread3Thread1of1ForFork4_thidvar1_2 3) (= v_thread3Thread1of1ForFork4_thidvar2_2 3)) InVars {} OutVars{thread3Thread1of1ForFork4_thidvar0=v_thread3Thread1of1ForFork4_thidvar0_2, thread3Thread1of1ForFork4_thidvar1=v_thread3Thread1of1ForFork4_thidvar1_2, thread3Thread1of1ForFork4_thidvar2=v_thread3Thread1of1ForFork4_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork4_thidvar0, thread3Thread1of1ForFork4_thidvar1, thread3Thread1of1ForFork4_thidvar2]" [2025-04-26 16:27:03,412 INFO L754 eck$LassoCheckResult]: Loop: "[134] L56-->L58: Formula: (< v_x3_1 v_z3_1) InVars {z3=v_z3_1, x3=v_x3_1} OutVars{z3=v_z3_1, x3=v_x3_1} AuxVars[] AssignedVars[]" "[136] L58-->L59: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" "[138] L59-->L56: Formula: (= v_c_5 (+ v_c_6 1)) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-04-26 16:27:03,412 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:27:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash 4006983, now seen corresponding path program 1 times [2025-04-26 16:27:03,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:27:03,412 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837874726] [2025-04-26 16:27:03,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:27:03,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:27:03,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:27:03,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:27:03,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:03,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:27:03,416 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:27:03,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:27:03,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:27:03,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:03,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:27:03,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:27:03,418 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:27:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash 162919, now seen corresponding path program 1 times [2025-04-26 16:27:03,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:27:03,419 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632297686] [2025-04-26 16:27:03,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:27:03,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:27:03,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:27:03,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:27:03,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:03,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:27:03,421 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:27:03,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:27:03,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:27:03,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:03,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:27:03,423 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:27:03,423 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:27:03,423 INFO L85 PathProgramCache]: Analyzing trace with hash -886920607, now seen corresponding path program 1 times [2025-04-26 16:27:03,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:27:03,423 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481489974] [2025-04-26 16:27:03,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:27:03,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:27:03,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:27:03,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:27:03,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:03,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:27:03,426 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:27:03,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:27:03,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:27:03,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:03,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:27:03,437 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:27:03,464 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:27:03,464 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:27:03,464 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:27:03,464 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:27:03,464 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:27:03,464 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:27:03,464 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:27:03,464 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:27:03,464 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:27:03,464 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:27:03,464 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:27:03,465 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:27:03,478 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:27:03,499 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:27:03,499 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:27:03,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:27:03,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:27:03,501 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) [2025-04-26 16:27:03,501 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 [2025-04-26 16:27:03,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:27:03,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:27:03,522 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 [2025-04-26 16:27:03,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:27:03,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:27:03,524 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) [2025-04-26 16:27:03,525 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 [2025-04-26 16:27:03,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:27:03,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:27:03,585 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:27:03,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 16:27:03,590 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:27:03,590 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:27:03,590 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:27:03,590 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:27:03,590 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:27:03,590 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:27:03,590 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:27:03,590 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:27:03,590 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:27:03,590 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:27:03,590 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:27:03,591 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:27:03,596 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:27:03,613 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:27:03,613 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:27:03,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:27:03,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:27:03,615 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) [2025-04-26 16:27:03,616 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 [2025-04-26 16:27:03,617 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 [2025-04-26 16:27:03,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:27:03,627 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:27:03,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:27:03,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:27:03,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:27:03,628 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:27:03,628 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:27:03,629 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:27:03,632 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:27:03,632 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:27:03,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:27:03,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:27:03,634 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) [2025-04-26 16:27:03,635 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 [2025-04-26 16:27:03,637 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:27:03,639 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 [2025-04-26 16:27:03,643 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:27:03,643 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:27:03,643 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z3) = -1*x3 + 1*z3 Supporting invariants [] [2025-04-26 16:27:03,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-04-26 16:27:03,649 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:27:03,661 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:27:03,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:27:03,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:27:03,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:03,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:27:03,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:27:03,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:27:03,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:27:03,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:27:03,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:03,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:27:03,678 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:27:03,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:27:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:27:03,706 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 [2025-04-26 16:27:03,707 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 176537 states and 1202832 transitions. cyclomatic complexity: 1039839 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0)