/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/pc6v.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:26:15,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:26:15,416 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:26:15,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:26:15,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:26:15,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:26:15,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:26:15,448 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:26:15,448 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:26:15,448 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:26:15,448 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:26:15,448 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:26:15,448 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:26:15,449 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:26:15,449 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:26:15,449 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:26:15,449 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:26:15,449 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:26:15,449 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:26:15,449 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:26:15,449 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:26:15,449 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:26:15,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:26:15,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:26:15,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:26:15,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:26:15,449 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:26:15,450 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:26:15,450 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:26:15,450 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:26:15,450 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:26:15,451 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:26:15,451 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:26:15,451 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:26:15,451 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:26:15,451 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:26:15,451 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:26:15,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:26:15,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:26:15,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:26:15,718 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:26:15,719 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:26:15,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pc6v.c.bpl [2025-04-26 16:26:15,721 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pc6v.c.bpl' [2025-04-26 16:26:15,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:26:15,744 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:26:15,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:26:15,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:26:15,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:26:15,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:15" (1/1) ... [2025-04-26 16:26:15,776 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:15" (1/1) ... [2025-04-26 16:26:15,782 INFO L138 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:26:15,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:26:15,784 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:26:15,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:26:15,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:26:15,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:15" (1/1) ... [2025-04-26 16:26:15,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:15" (1/1) ... [2025-04-26 16:26:15,793 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:15" (1/1) ... [2025-04-26 16:26:15,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:15" (1/1) ... [2025-04-26 16:26:15,796 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:15" (1/1) ... [2025-04-26 16:26:15,796 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:15" (1/1) ... [2025-04-26 16:26:15,801 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:15" (1/1) ... [2025-04-26 16:26:15,804 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:15" (1/1) ... [2025-04-26 16:26:15,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:15" (1/1) ... [2025-04-26 16:26:15,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:26:15,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:26:15,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:26:15,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:26:15,818 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:15" (1/1) ... [2025-04-26 16:26:15,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:15,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:15,842 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 16:26:15,846 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 16:26:15,864 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:26:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:26:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:26:15,864 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:26:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:26:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:26:15,864 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:26:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:26:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:26:15,864 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:26:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:26:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:26:15,865 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:26:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:26:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:26:15,865 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 16:26:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 16:26:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 16:26:15,865 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-04-26 16:26:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-26 16:26:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-26 16:26:15,866 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 16:26:15,905 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:26:15,907 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:26:16,000 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:26:16,000 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:26:16,008 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:26:16,009 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:26:16,009 INFO L201 PluginConnector]: Adding new model pc6v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:26:16 BoogieIcfgContainer [2025-04-26 16:26:16,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:26:16,011 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:26:16,012 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:26:16,016 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:26:16,016 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:26:16,017 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:15" (1/2) ... [2025-04-26 16:26:16,019 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@19b072af and model type pc6v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:26:16, skipping insertion in model container [2025-04-26 16:26:16,019 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:26:16,019 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc6v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:26:16" (2/2) ... [2025-04-26 16:26:16,020 INFO L376 chiAutomizerObserver]: Analyzing ICFG pc6v.c.bpl [2025-04-26 16:26:16,093 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-04-26 16:26:16,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 62 transitions, 166 flow [2025-04-26 16:26:16,152 INFO L116 PetriNetUnfolderBase]: 6/50 cut-off events. [2025-04-26 16:26:16,154 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-26 16:26:16,157 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 140 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 16:26:16,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 62 transitions, 166 flow [2025-04-26 16:26:16,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 136 flow [2025-04-26 16:26:16,161 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 63 places, 50 transitions, 136 flow [2025-04-26 16:26:16,169 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:26:16,169 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:26:16,169 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:26:16,169 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:26:16,169 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:26:16,169 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:26:16,169 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:26:16,170 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:26:16,172 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:26:20,963 INFO L131 ngComponentsAnalysis]: Automaton has 5369 accepting balls. 63861 [2025-04-26 16:26:20,963 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:20,963 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:20,969 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:26:20,969 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:20,969 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:26:20,969 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 65319 states, but on-demand construction may add more states [2025-04-26 16:26:22,712 INFO L131 ngComponentsAnalysis]: Automaton has 5369 accepting balls. 63861 [2025-04-26 16:26:22,713 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:22,713 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:22,715 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:26:22,715 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:22,719 INFO L752 eck$LassoCheckResult]: Stem: "[86] $Ultimate##0-->L16: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[163] L16-->L33: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" [2025-04-26 16:26:22,719 INFO L754 eck$LassoCheckResult]: Loop: "[120] L33-->L35: 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[]" "[122] L35-->L36: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[124] L36-->L33: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-04-26 16:26:22,722 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:22,722 INFO L85 PathProgramCache]: Analyzing trace with hash 3790, now seen corresponding path program 1 times [2025-04-26 16:26:22,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:22,727 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852244542] [2025-04-26 16:26:22,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:22,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:22,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:26:22,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:26:22,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:22,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:22,777 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:22,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:26:22,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:26:22,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:22,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:22,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:22,801 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:22,801 INFO L85 PathProgramCache]: Analyzing trace with hash 149017, now seen corresponding path program 1 times [2025-04-26 16:26:22,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:22,801 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205395909] [2025-04-26 16:26:22,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:22,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:22,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:22,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:22,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:22,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:22,813 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:22,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:22,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:22,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:22,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:22,820 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:22,821 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash 113027116, now seen corresponding path program 1 times [2025-04-26 16:26:22,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:22,822 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591434525] [2025-04-26 16:26:22,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:22,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:22,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:22,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:22,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:22,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:22,828 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:22,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:22,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:22,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:22,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:22,837 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:22,891 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:22,892 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:22,892 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:22,892 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:22,892 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:22,892 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:22,892 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:22,892 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:22,893 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6v.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:26:22,893 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:22,893 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:22,906 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:22,922 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:23,045 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:23,046 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:23,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:23,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:23,050 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 16:26:23,052 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 16:26:23,053 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:23,053 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:23,075 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 16:26:23,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:23,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:23,078 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 16:26:23,079 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 16:26:23,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:23,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:23,133 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:26:23,133 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 16:26:23,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 16:26:23,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:23,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:23,142 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 16:26:23,144 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 16:26:23,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:23,149 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:23,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:23,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:23,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:23,174 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 16:26:23,176 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 16:26:23,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:23,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:23,251 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:23,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 16:26:23,256 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:23,256 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:23,256 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:23,256 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:23,256 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:23,256 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:23,256 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:23,257 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:23,258 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6v.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:26:23,258 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:23,258 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:23,259 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:23,265 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:23,313 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:23,320 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:23,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:23,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:23,324 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 16:26:23,329 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 16:26:23,330 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 16:26:23,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:23,342 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:23,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:23,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:23,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:23,352 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:23,352 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:23,355 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:26:23,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:23,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:23,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:23,363 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 16:26:23,365 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 16:26:23,369 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 16:26:23,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:23,381 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:23,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:23,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:23,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:23,382 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:23,382 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:23,388 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:23,391 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:23,391 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:26:23,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:23,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:23,398 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 16:26:23,399 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 16:26:23,400 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:23,403 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:26:23,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:26:23,407 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:23,407 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:23,408 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z1) = -1*x1 + 1*z1 Supporting invariants [] [2025-04-26 16:26:23,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:23,424 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:23,465 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:23,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:26:23,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:26:23,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:23,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:23,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:23,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:23,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:23,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:23,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:23,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:23,507 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:23,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:23,589 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 16:26:23,646 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 16:26:23,649 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 16:26:27,074 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 16:26:27,077 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 16:26:27,080 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 16:26:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2025-04-26 16:26:27,092 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 123 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 16:26:27,093 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:27,093 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 123 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:26:27,093 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:27,093 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 123 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 16:26:27,093 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:27,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158630 states and 999062 transitions. [2025-04-26 16:26:30,900 INFO L131 ngComponentsAnalysis]: Automaton has 7007 accepting balls. 62769 [2025-04-26 16:26:33,384 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158630 states to 119117 states and 763937 transitions. [2025-04-26 16:26:33,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64103 [2025-04-26 16:26:34,044 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82442 [2025-04-26 16:26:34,044 INFO L74 IsDeterministic]: Start isDeterministic. Operand 119117 states and 763937 transitions. [2025-04-26 16:26:34,045 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:34,045 INFO L218 hiAutomatonCegarLoop]: Abstraction has 119117 states and 763937 transitions. [2025-04-26 16:26:34,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119117 states and 763937 transitions. [2025-04-26 16:26:37,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119117 to 100779. [2025-04-26 16:26:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100779 states, 100779 states have (on average 6.403734905089354) internal successors, (in total 645362), 100778 states have internal predecessors, (645362), 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 16:26:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100779 states to 100779 states and 645362 transitions. [2025-04-26 16:26:39,599 INFO L240 hiAutomatonCegarLoop]: Abstraction has 100779 states and 645362 transitions. [2025-04-26 16:26:39,599 INFO L438 stractBuchiCegarLoop]: Abstraction has 100779 states and 645362 transitions. [2025-04-26 16:26:39,599 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:26:39,599 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100779 states and 645362 transitions. [2025-04-26 16:26:40,862 INFO L131 ngComponentsAnalysis]: Automaton has 7007 accepting balls. 62769 [2025-04-26 16:26:40,862 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:40,862 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:40,866 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:26:40,866 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:40,866 INFO L752 eck$LassoCheckResult]: Stem: "[86] $Ultimate##0-->L16: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[163] L16-->L33: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[166] L16-1-->L44: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" [2025-04-26 16:26:40,866 INFO L754 eck$LassoCheckResult]: Loop: "[126] L44-->L46: 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[]" "[128] L46-->L47: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[130] L47-->L44: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-04-26 16:26:40,867 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:40,867 INFO L85 PathProgramCache]: Analyzing trace with hash 117656, now seen corresponding path program 1 times [2025-04-26 16:26:40,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:40,867 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551818137] [2025-04-26 16:26:40,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:40,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:40,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:40,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:40,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:40,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:40,871 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:40,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:40,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:40,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:40,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:40,877 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:40,877 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:40,878 INFO L85 PathProgramCache]: Analyzing trace with hash 154975, now seen corresponding path program 1 times [2025-04-26 16:26:40,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:40,878 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354888210] [2025-04-26 16:26:40,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:40,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:40,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:40,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:40,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:40,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:40,882 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:40,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:40,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:40,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:40,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:40,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:40,888 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:40,888 INFO L85 PathProgramCache]: Analyzing trace with hash -789752216, now seen corresponding path program 1 times [2025-04-26 16:26:40,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:40,889 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720454882] [2025-04-26 16:26:40,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:40,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:40,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:26:40,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:26:40,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:40,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:40,895 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:40,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:26:40,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:26:40,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:40,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:40,905 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:40,923 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:40,923 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:40,923 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:40,923 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:40,923 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:40,923 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:40,923 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:40,923 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:40,923 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6v.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:26:40,923 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:40,923 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:40,924 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:40,927 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:40,950 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:40,950 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:40,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:40,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:40,952 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 16:26:40,954 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 16:26:40,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:40,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:40,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:26:40,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:40,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:40,973 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 16:26:40,974 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 16:26:40,975 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:40,975 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:41,006 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:26:41,006 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 16:26:41,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 16:26:41,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:41,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:41,014 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 16:26:41,016 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 16:26:41,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:41,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:41,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:41,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:41,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:41,036 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 16:26:41,037 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 16:26:41,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:41,038 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:41,103 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:41,107 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 16:26:41,107 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:41,107 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:41,107 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:41,107 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:41,107 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:41,107 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:41,107 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:41,108 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:41,108 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6v.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:26:41,108 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:41,108 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:41,108 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:41,112 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:41,140 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:41,140 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:41,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:41,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:41,142 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 16:26:41,143 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 16:26:41,144 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 16:26:41,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:41,154 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:41,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:41,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:41,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:41,155 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:41,155 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:41,156 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:26:41,161 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 16:26:41,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:41,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:41,164 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 16:26:41,166 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 16:26:41,168 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 16:26:41,178 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:41,178 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:41,178 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:41,178 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:41,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:41,179 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:41,179 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:41,181 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:41,183 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:41,184 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:26:41,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:41,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:41,186 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 16:26:41,187 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 16:26:41,188 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:41,191 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 16:26:41,192 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:41,192 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:41,192 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-04-26 16:26:41,197 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 16:26:41,198 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:41,211 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:41,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:41,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:41,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:41,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:41,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:41,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:41,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:41,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:41,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:41,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:41,228 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:41,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:41,258 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 16:26:41,259 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 16:26:41,260 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100779 states and 645362 transitions. cyclomatic complexity: 552793 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 16:26:45,647 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100779 states and 645362 transitions. cyclomatic complexity: 552793. 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 257996 states and 1723011 transitions. Complement of second has 6 states. [2025-04-26 16:26:45,648 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 16:26:45,648 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 16:26:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2025-04-26 16:26:45,648 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 3 letters. Loop has 3 letters. [2025-04-26 16:26:45,648 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:45,648 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 16:26:45,649 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:45,649 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 3 letters. Loop has 6 letters. [2025-04-26 16:26:45,649 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:45,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 257996 states and 1723011 transitions. [2025-04-26 16:26:52,674 INFO L131 ngComponentsAnalysis]: Automaton has 9190 accepting balls. 60348 [2025-04-26 16:26:55,865 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 257996 states to 193522 states and 1308391 transitions. [2025-04-26 16:26:55,865 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73481 [2025-04-26 16:26:56,267 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 93988 [2025-04-26 16:26:56,268 INFO L74 IsDeterministic]: Start isDeterministic. Operand 193522 states and 1308391 transitions. [2025-04-26 16:26:56,268 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:56,268 INFO L218 hiAutomatonCegarLoop]: Abstraction has 193522 states and 1308391 transitions. [2025-04-26 16:26:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193522 states and 1308391 transitions. [2025-04-26 16:27:01,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193522 to 173015. [2025-04-26 16:27:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173015 states, 173015 states have (on average 6.813027772158484) internal successors, (in total 1178756), 173014 states have internal predecessors, (1178756), 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 16:27:03,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173015 states to 173015 states and 1178756 transitions. [2025-04-26 16:27:03,268 INFO L240 hiAutomatonCegarLoop]: Abstraction has 173015 states and 1178756 transitions. [2025-04-26 16:27:03,268 INFO L438 stractBuchiCegarLoop]: Abstraction has 173015 states and 1178756 transitions. [2025-04-26 16:27:03,268 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:27:03,268 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 173015 states and 1178756 transitions. [2025-04-26 16:27:04,893 INFO L131 ngComponentsAnalysis]: Automaton has 9190 accepting balls. 60348 [2025-04-26 16:27:04,893 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:27:04,893 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:27:04,897 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:27:04,897 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:27:04,897 INFO L752 eck$LassoCheckResult]: Stem: "[86] $Ultimate##0-->L16: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[163] L16-->L33: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[166] L16-1-->L44: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" "[169] L17-->L55: Formula: (and (= v_thread3Thread1of1ForFork4_thidvar0_2 3) (= v_thread3Thread1of1ForFork4_thidvar1_2 3) (= v_thread3Thread1of1ForFork4_thidvar2_2 3)) InVars {} OutVars{thread3Thread1of1ForFork4_thidvar0=v_thread3Thread1of1ForFork4_thidvar0_2, thread3Thread1of1ForFork4_thidvar1=v_thread3Thread1of1ForFork4_thidvar1_2, thread3Thread1of1ForFork4_thidvar2=v_thread3Thread1of1ForFork4_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork4_thidvar0, thread3Thread1of1ForFork4_thidvar1, thread3Thread1of1ForFork4_thidvar2]" [2025-04-26 16:27:04,898 INFO L754 eck$LassoCheckResult]: Loop: "[132] L55-->L57: Formula: (< v_y1_1 v_z1_3) InVars {y1=v_y1_1, z1=v_z1_3} OutVars{y1=v_y1_1, z1=v_z1_3} AuxVars[] AssignedVars[]" "[134] L57-->L58: Formula: (= v_y1_2 (+ v_y1_3 1)) InVars {y1=v_y1_3} OutVars{y1=v_y1_2} AuxVars[] AssignedVars[y1]" "[136] L58-->L55: Formula: (= v_c_5 (+ v_c_6 1)) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-04-26 16:27:04,898 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:27:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash 3647505, now seen corresponding path program 1 times [2025-04-26 16:27:04,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:27:04,898 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121659683] [2025-04-26 16:27:04,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:27:04,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:27:04,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:27:04,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:27:04,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:04,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:27:04,901 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:27:04,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:27:04,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:27:04,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:04,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:27:04,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:27:04,904 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:27:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash 160933, now seen corresponding path program 1 times [2025-04-26 16:27:04,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:27:04,904 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524239157] [2025-04-26 16:27:04,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:27:04,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:27:04,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:27:04,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:27:04,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:04,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:27:04,906 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:27:04,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:27:04,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:27:04,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:04,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:27:04,909 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:27:04,909 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:27:04,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1288770197, now seen corresponding path program 1 times [2025-04-26 16:27:04,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:27:04,909 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158571339] [2025-04-26 16:27:04,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:27:04,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:27:04,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:27:04,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:27:04,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:04,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:27:04,912 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:27:04,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:27:04,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:27:04,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:04,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:27:04,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:27:04,933 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:27:04,933 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:27:04,933 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:27:04,933 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:27:04,933 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:27:04,933 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:27:04,933 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:27:04,933 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:27:04,933 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6v.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:27:04,933 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:27:04,933 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:27:04,933 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:27:04,938 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:27:04,958 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:27:04,958 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:27:04,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:27:04,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:27:04,960 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 16:27:04,971 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 16:27:04,972 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:27:04,972 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:27:04,989 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 16:27:04,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:27:04,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:27:04,991 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 16:27:04,991 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 16:27:04,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:27:04,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:27:05,052 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:27:05,057 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 16:27:05,057 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:27:05,057 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:27:05,057 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:27:05,057 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:27:05,057 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:27:05,057 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:27:05,057 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:27:05,057 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:27:05,057 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6v.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:27:05,057 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:27:05,057 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:27:05,058 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:27:05,063 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:27:05,082 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:27:05,082 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:27:05,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:27:05,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:27:05,084 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 16:27:05,085 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 16:27:05,085 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:27:05,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:27:05,097 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:27:05,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:27:05,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:27:05,098 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:27:05,098 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:27:05,098 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:27:05,104 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:27:05,106 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:27:05,106 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:27:05,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:27:05,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:27:05,109 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 16:27:05,110 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 16:27:05,111 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:27:05,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-04-26 16:27:05,114 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:27:05,114 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:27:05,114 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y1, z1) = -1*y1 + 1*z1 Supporting invariants [] [2025-04-26 16:27:05,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-04-26 16:27:05,124 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:27:05,139 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:27:05,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:27:05,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:27:05,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:05,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:27:05,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:27:05,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:27:05,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:27:05,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:27:05,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:27:05,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:27:05,158 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:27:05,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:27:05,191 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 16:27:05,192 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 16:27:05,192 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 173015 states and 1178756 transitions. cyclomatic complexity: 1018865 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) [2025-04-26 16:27:11,931 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 173015 states and 1178756 transitions. cyclomatic complexity: 1018865. 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) Result 485863 states and 3415412 transitions. Complement of second has 6 states. [2025-04-26 16:27:11,931 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 16:27:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2025-04-26 16:27:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2025-04-26 16:27:11,932 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 133 transitions. Stem has 4 letters. Loop has 3 letters. [2025-04-26 16:27:11,932 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:27:11,932 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 133 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 16:27:11,932 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:27:11,932 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 133 transitions. Stem has 4 letters. Loop has 6 letters. [2025-04-26 16:27:11,932 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:27:11,932 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 485863 states and 3415412 transitions.