/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/pc5v.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:26:10,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:26:10,517 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:26:10,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:26:10,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:26:10,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:26:10,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:26:10,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:26:10,547 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:26:10,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:26:10,547 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:26:10,547 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:26:10,547 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:26:10,547 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:26:10,547 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:26:10,547 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:26:10,547 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:26:10,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:26:10,547 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:26:10,548 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:26:10,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:26:10,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:26:10,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:26:10,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:26:10,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:26:10,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:26:10,549 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:26:10,549 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:26:10,549 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:26:10,549 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:26:10,549 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:26:10,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:26:10,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:26:10,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:26:10,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:26:10,549 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:26:10,549 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:26:10,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:26:10,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:26:10,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:26:10,771 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:26:10,772 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:26:10,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pc5v.c.bpl [2025-04-26 16:26:10,773 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pc5v.c.bpl' [2025-04-26 16:26:10,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:26:10,790 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:26:10,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:26:10,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:26:10,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:26:10,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:10" (1/1) ... [2025-04-26 16:26:10,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:10" (1/1) ... [2025-04-26 16:26:10,824 INFO L138 Inliner]: procedures = 6, calls = 5, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:26:10,825 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:26:10,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:26:10,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:26:10,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:26:10,830 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:10" (1/1) ... [2025-04-26 16:26:10,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:10" (1/1) ... [2025-04-26 16:26:10,831 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:10" (1/1) ... [2025-04-26 16:26:10,831 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:10" (1/1) ... [2025-04-26 16:26:10,833 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:10" (1/1) ... [2025-04-26 16:26:10,833 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:10" (1/1) ... [2025-04-26 16:26:10,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:10" (1/1) ... [2025-04-26 16:26:10,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:10" (1/1) ... [2025-04-26 16:26:10,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:10" (1/1) ... [2025-04-26 16:26:10,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:26:10,843 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:26:10,843 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:26:10,843 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:26:10,844 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:10" (1/1) ... [2025-04-26 16:26:10,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:10,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:10,867 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 16:26:10,871 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 16:26:10,892 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:26:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:26:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:26:10,892 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:26:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:26:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:26:10,892 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:26:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:26:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:26:10,893 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:26:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:26:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:26:10,893 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:26:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:26:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:26:10,893 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 16:26:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 16:26:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 16:26:10,894 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 16:26:10,926 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:26:10,927 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:26:11,012 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:26:11,012 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:26:11,020 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:26:11,021 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:26:11,021 INFO L201 PluginConnector]: Adding new model pc5v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:26:11 BoogieIcfgContainer [2025-04-26 16:26:11,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:26:11,024 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:26:11,024 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:26:11,029 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:26:11,029 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:26:11,029 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:10" (1/2) ... [2025-04-26 16:26:11,030 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10cc6887 and model type pc5v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:26:11, skipping insertion in model container [2025-04-26 16:26:11,030 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:26:11,030 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:26:11" (2/2) ... [2025-04-26 16:26:11,031 INFO L376 chiAutomizerObserver]: Analyzing ICFG pc5v.c.bpl [2025-04-26 16:26:11,096 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2025-04-26 16:26:11,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 52 transitions, 139 flow [2025-04-26 16:26:11,145 INFO L116 PetriNetUnfolderBase]: 5/42 cut-off events. [2025-04-26 16:26:11,147 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-26 16:26:11,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 42 events. 5/42 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 115 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2025-04-26 16:26:11,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 52 transitions, 139 flow [2025-04-26 16:26:11,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 42 transitions, 114 flow [2025-04-26 16:26:11,154 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 53 places, 42 transitions, 114 flow [2025-04-26 16:26:11,163 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:26:11,163 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:26:11,163 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:26:11,163 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:26:11,163 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:26:11,163 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:26:11,163 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:26:11,163 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:26:11,165 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:26:12,145 INFO L131 ngComponentsAnalysis]: Automaton has 1221 accepting balls. 10401 [2025-04-26 16:26:12,146 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:12,148 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:12,151 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:26:12,152 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:12,152 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:26:12,152 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 10887 states, but on-demand construction may add more states [2025-04-26 16:26:12,387 INFO L131 ngComponentsAnalysis]: Automaton has 1221 accepting balls. 10401 [2025-04-26 16:26:12,388 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:12,388 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:12,388 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:26:12,388 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:12,393 INFO L752 eck$LassoCheckResult]: Stem: "[91] $Ultimate##0-->L15: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[135] L15-->L30: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" [2025-04-26 16:26:12,393 INFO L754 eck$LassoCheckResult]: Loop: "[101] L30-->L32: 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[]" "[103] L32-->L33: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[105] L33-->L30: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-04-26 16:26:12,398 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:12,399 INFO L85 PathProgramCache]: Analyzing trace with hash 3917, now seen corresponding path program 1 times [2025-04-26 16:26:12,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:12,405 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777438414] [2025-04-26 16:26:12,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:12,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:26:12,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:26:12,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:12,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:12,461 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:12,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:26:12,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:26:12,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:12,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:12,477 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:12,481 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:12,481 INFO L85 PathProgramCache]: Analyzing trace with hash 130150, now seen corresponding path program 1 times [2025-04-26 16:26:12,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:12,481 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293295998] [2025-04-26 16:26:12,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:12,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:12,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:12,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:12,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:12,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:12,490 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:12,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:12,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:12,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:12,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:12,498 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:12,499 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:12,499 INFO L85 PathProgramCache]: Analyzing trace with hash 116791706, now seen corresponding path program 1 times [2025-04-26 16:26:12,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:12,503 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487348333] [2025-04-26 16:26:12,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:12,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:12,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:12,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:12,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:12,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:12,511 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:12,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:12,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:12,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:12,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:12,517 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:12,577 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:12,578 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:12,578 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:12,578 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:12,578 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:12,578 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:12,578 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:12,578 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:12,579 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:26:12,579 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:12,579 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:12,587 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:12,601 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:12,636 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:12,637 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:12,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:12,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:12,640 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 16:26:12,642 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 16:26:12,643 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:12,643 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:12,664 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 16:26:12,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:12,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:12,666 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 16:26:12,667 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 16:26:12,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:12,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:12,734 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:12,737 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 16:26:12,738 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:12,738 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:12,738 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:12,738 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:12,738 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:12,738 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:12,738 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:12,738 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:12,738 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:26:12,738 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:12,738 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:12,739 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:12,748 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:12,775 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:12,778 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:12,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:12,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:12,782 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 16:26:12,786 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 16:26:12,786 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 16:26:12,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:12,797 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:12,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:12,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:12,798 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:12,801 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:12,801 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:12,804 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:12,808 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:26:12,808 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:26:12,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:12,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:12,811 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 16:26:12,812 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 16:26:12,814 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:12,816 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:26:12,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:12,817 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:12,817 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:12,818 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-04-26 16:26:12,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 16:26:12,825 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:12,841 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:12,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:26:12,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:26:12,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:12,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:12,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:12,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:12,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:12,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:12,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:12,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:12,886 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:12,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:12,949 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 16:26:12,996 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 16:26:13,002 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 10887 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 16:26:13,661 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 10887 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 26438 states and 138518 transitions. Complement of second has 6 states. [2025-04-26 16:26:13,664 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 16:26:13,667 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 16:26:13,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-04-26 16:26:13,678 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 101 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 16:26:13,679 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:13,679 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 101 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:26:13,679 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:13,679 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 101 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 16:26:13,682 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:13,683 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26438 states and 138518 transitions. [2025-04-26 16:26:14,351 INFO L131 ngComponentsAnalysis]: Automaton has 1540 accepting balls. 10038 [2025-04-26 16:26:14,734 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26438 states to 19487 states and 104003 transitions. [2025-04-26 16:26:14,735 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10481 [2025-04-26 16:26:14,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13484 [2025-04-26 16:26:14,783 INFO L74 IsDeterministic]: Start isDeterministic. Operand 19487 states and 104003 transitions. [2025-04-26 16:26:14,783 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:14,783 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19487 states and 104003 transitions. [2025-04-26 16:26:14,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19487 states and 104003 transitions. [2025-04-26 16:26:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19487 to 16485. [2025-04-26 16:26:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16485 states, 16485 states have (on average 5.313679102214134) internal successors, (in total 87596), 16484 states have internal predecessors, (87596), 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 16:26:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16485 states to 16485 states and 87596 transitions. [2025-04-26 16:26:15,982 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16485 states and 87596 transitions. [2025-04-26 16:26:15,982 INFO L438 stractBuchiCegarLoop]: Abstraction has 16485 states and 87596 transitions. [2025-04-26 16:26:15,982 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:26:15,982 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16485 states and 87596 transitions. [2025-04-26 16:26:16,109 INFO L131 ngComponentsAnalysis]: Automaton has 1540 accepting balls. 10038 [2025-04-26 16:26:16,109 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:16,109 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:16,110 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:26:16,110 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:16,111 INFO L752 eck$LassoCheckResult]: Stem: "[91] $Ultimate##0-->L15: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[135] L15-->L30: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[138] L15-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" [2025-04-26 16:26:16,111 INFO L754 eck$LassoCheckResult]: Loop: "[107] L41-->L43: 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[]" "[109] L43-->L44: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[111] L44-->L41: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-04-26 16:26:16,111 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:16,112 INFO L85 PathProgramCache]: Analyzing trace with hash 121565, now seen corresponding path program 1 times [2025-04-26 16:26:16,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:16,112 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145479297] [2025-04-26 16:26:16,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:16,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:16,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:16,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:16,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:16,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:16,119 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:16,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:16,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:16,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:16,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:16,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:16,127 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:16,127 INFO L85 PathProgramCache]: Analyzing trace with hash 136108, now seen corresponding path program 1 times [2025-04-26 16:26:16,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:16,127 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624140410] [2025-04-26 16:26:16,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:16,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:16,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:16,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:16,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:16,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:16,134 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:16,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:16,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:16,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:16,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:16,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:16,137 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash -673318064, now seen corresponding path program 1 times [2025-04-26 16:26:16,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:16,137 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593249866] [2025-04-26 16:26:16,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:16,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:16,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:26:16,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:26:16,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:16,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:16,144 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:16,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:26:16,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:26:16,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:16,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:16,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:16,178 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:16,178 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:16,178 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:16,178 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:16,178 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:16,178 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:16,178 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:16,178 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:16,178 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:26:16,178 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:16,178 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:16,179 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:16,183 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:16,208 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:16,208 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:16,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:16,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:16,210 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 16:26:16,211 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 16:26:16,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:16,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:16,229 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 16:26:16,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:16,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:16,231 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 16:26:16,233 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 16:26:16,236 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:16,236 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:16,268 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:26:16,268 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 16:26:16,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:26:16,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:16,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:16,276 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 16:26:16,276 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 16:26:16,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:16,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:16,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:26:16,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:16,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:16,295 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 16:26:16,296 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 16:26:16,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:16,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:16,361 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:16,365 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 16:26:16,366 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:16,366 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:16,366 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:16,366 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:16,366 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:16,366 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:16,366 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:16,366 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:16,366 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:26:16,366 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:16,366 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:16,367 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:16,370 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:16,409 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:16,409 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:16,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:16,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:16,412 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 16:26:16,413 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 16:26:16,414 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 16:26:16,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:16,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:16,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:16,424 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:16,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:16,424 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:16,424 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:16,426 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:26:16,431 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 16:26:16,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:16,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:16,433 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 16:26:16,434 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 16:26:16,434 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 16:26:16,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:16,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:16,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:16,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:16,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:16,445 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:16,445 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:16,447 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:16,449 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:16,449 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:26:16,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:16,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:16,451 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 16:26:16,452 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 16:26:16,453 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:16,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:16,456 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:16,456 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:16,456 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-04-26 16:26:16,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 16:26:16,462 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:16,475 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:16,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:16,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:16,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:16,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:16,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:16,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:16,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:16,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:16,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:16,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:16,494 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:16,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:16,520 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 16:26:16,520 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 16:26:16,521 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16485 states and 87596 transitions. cyclomatic complexity: 72938 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 16:26:17,245 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16485 states and 87596 transitions. cyclomatic complexity: 72938. 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 42320 states and 234699 transitions. Complement of second has 6 states. [2025-04-26 16:26:17,245 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 16:26:17,246 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 16:26:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2025-04-26 16:26:17,246 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 3 letters. Loop has 3 letters. [2025-04-26 16:26:17,246 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:17,246 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 16:26:17,247 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:17,247 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 3 letters. Loop has 6 letters. [2025-04-26 16:26:17,247 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:17,247 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42320 states and 234699 transitions. [2025-04-26 16:26:18,066 INFO L131 ngComponentsAnalysis]: Automaton has 1887 accepting balls. 9237 [2025-04-26 16:26:18,509 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42320 states to 31072 states and 174229 transitions. [2025-04-26 16:26:18,509 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11795 [2025-04-26 16:26:18,561 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15094 [2025-04-26 16:26:18,562 INFO L74 IsDeterministic]: Start isDeterministic. Operand 31072 states and 174229 transitions. [2025-04-26 16:26:18,562 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:18,562 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31072 states and 174229 transitions. [2025-04-26 16:26:18,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31072 states and 174229 transitions. [2025-04-26 16:26:19,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31072 to 27773. [2025-04-26 16:26:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27773 states, 27773 states have (on average 5.64209844093184) internal successors, (in total 156698), 27772 states have internal predecessors, (156698), 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 16:26:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27773 states to 27773 states and 156698 transitions. [2025-04-26 16:26:19,683 INFO L240 hiAutomatonCegarLoop]: Abstraction has 27773 states and 156698 transitions. [2025-04-26 16:26:19,683 INFO L438 stractBuchiCegarLoop]: Abstraction has 27773 states and 156698 transitions. [2025-04-26 16:26:19,683 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:26:19,683 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27773 states and 156698 transitions. [2025-04-26 16:26:19,898 INFO L131 ngComponentsAnalysis]: Automaton has 1887 accepting balls. 9237 [2025-04-26 16:26:19,898 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:19,898 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:19,899 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:26:19,899 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:19,899 INFO L752 eck$LassoCheckResult]: Stem: "[91] $Ultimate##0-->L15: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[135] L15-->L30: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[138] L15-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" "[141] L16-->L52: Formula: (and (= v_thread3Thread1of1ForFork3_thidvar2_2 3) (= v_thread3Thread1of1ForFork3_thidvar1_2 3) (= v_thread3Thread1of1ForFork3_thidvar0_2 3)) InVars {} OutVars{thread3Thread1of1ForFork3_thidvar0=v_thread3Thread1of1ForFork3_thidvar0_2, thread3Thread1of1ForFork3_thidvar2=v_thread3Thread1of1ForFork3_thidvar2_2, thread3Thread1of1ForFork3_thidvar1=v_thread3Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork3_thidvar0, thread3Thread1of1ForFork3_thidvar2, thread3Thread1of1ForFork3_thidvar1]" [2025-04-26 16:26:19,900 INFO L754 eck$LassoCheckResult]: Loop: "[113] L52-->L54: 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[]" "[115] L54-->L55: Formula: (= v_y1_2 (+ v_y1_3 1)) InVars {y1=v_y1_3} OutVars{y1=v_y1_2} AuxVars[] AssignedVars[y1]" "[117] L55-->L52: Formula: (= v_c_5 (+ v_c_6 1)) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-04-26 16:26:19,900 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:19,900 INFO L85 PathProgramCache]: Analyzing trace with hash 3768656, now seen corresponding path program 1 times [2025-04-26 16:26:19,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:19,900 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283674883] [2025-04-26 16:26:19,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:19,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:19,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:19,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:19,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:19,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:19,906 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:19,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:19,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:19,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:19,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:19,909 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:19,909 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:19,909 INFO L85 PathProgramCache]: Analyzing trace with hash 142066, now seen corresponding path program 1 times [2025-04-26 16:26:19,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:19,909 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142627801] [2025-04-26 16:26:19,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:19,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:19,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:19,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:19,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:19,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:19,913 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:19,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:19,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:19,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:19,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:19,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:19,916 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:19,917 INFO L85 PathProgramCache]: Analyzing trace with hash 602993475, now seen corresponding path program 1 times [2025-04-26 16:26:19,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:19,917 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826506627] [2025-04-26 16:26:19,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:19,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:19,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:26:19,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:26:19,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:19,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:19,921 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:19,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:26:19,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:26:19,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:19,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:19,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:19,960 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:19,960 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:19,960 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:19,960 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:19,960 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:19,960 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:19,960 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:19,960 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:19,960 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:26:19,960 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:19,960 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:19,961 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:19,964 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:19,986 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:19,987 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:19,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:19,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:19,989 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 16:26:19,990 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 16:26:19,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:19,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:20,008 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 16:26:20,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,010 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 16:26:20,013 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 16:26:20,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:20,014 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:20,045 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:26:20,046 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-04-26 16:26:20,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 16:26:20,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,056 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 16:26:20,057 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 16:26:20,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:20,060 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:20,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-04-26 16:26:20,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,077 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 16:26:20,078 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 16:26:20,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:20,079 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:20,143 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:20,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:20,147 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:20,147 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:20,147 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:20,147 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:20,147 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:20,147 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,147 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:20,147 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:20,147 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:26:20,147 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:20,147 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:20,152 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:20,154 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:20,177 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:20,177 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:20,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,180 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 16:26:20,182 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 16:26:20,182 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:26:20,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:20,193 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:20,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:20,193 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:20,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:20,195 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:20,195 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:20,197 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:26:20,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-04-26 16:26:20,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,207 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 16:26:20,209 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 16:26:20,210 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:26:20,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:20,220 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:20,220 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:20,220 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:20,220 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:20,221 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:20,221 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:20,223 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:20,226 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:26:20,226 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:26:20,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,228 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 16:26:20,230 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 16:26:20,231 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:20,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:20,238 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:20,239 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:20,239 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y1, z1) = -1*y1 + 1*z1 Supporting invariants [] [2025-04-26 16:26:20,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:20,245 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:20,256 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:20,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:20,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:20,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:20,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:20,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:20,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:20,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:20,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:20,283 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:20,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:26:20,312 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:26:20,312 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27773 states and 156698 transitions. cyclomatic complexity: 131730 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 16:26:21,544 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27773 states and 156698 transitions. cyclomatic complexity: 131730. 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 78343 states and 456458 transitions. Complement of second has 6 states. [2025-04-26 16:26:21,544 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 16:26:21,545 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 16:26:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-04-26 16:26:21,546 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 111 transitions. Stem has 4 letters. Loop has 3 letters. [2025-04-26 16:26:21,546 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:21,546 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 111 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 16:26:21,546 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:21,546 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 111 transitions. Stem has 4 letters. Loop has 6 letters. [2025-04-26 16:26:21,546 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:21,546 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78343 states and 456458 transitions. [2025-04-26 16:26:23,164 INFO L131 ngComponentsAnalysis]: Automaton has 2030 accepting balls. 7644 [2025-04-26 16:26:24,173 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78343 states to 53445 states and 313860 transitions. [2025-04-26 16:26:24,173 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14655 [2025-04-26 16:26:24,230 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17810 [2025-04-26 16:26:24,230 INFO L74 IsDeterministic]: Start isDeterministic. Operand 53445 states and 313860 transitions. [2025-04-26 16:26:24,230 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:24,230 INFO L218 hiAutomatonCegarLoop]: Abstraction has 53445 states and 313860 transitions. [2025-04-26 16:26:24,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53445 states and 313860 transitions. [2025-04-26 16:26:25,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53445 to 48520. [2025-04-26 16:26:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48520 states, 48520 states have (on average 5.9199299258037925) internal successors, (in total 287235), 48519 states have internal predecessors, (287235), 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 16:26:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48520 states to 48520 states and 287235 transitions. [2025-04-26 16:26:26,161 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48520 states and 287235 transitions. [2025-04-26 16:26:26,161 INFO L438 stractBuchiCegarLoop]: Abstraction has 48520 states and 287235 transitions. [2025-04-26 16:26:26,161 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:26:26,161 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48520 states and 287235 transitions. [2025-04-26 16:26:26,831 INFO L131 ngComponentsAnalysis]: Automaton has 2030 accepting balls. 7644 [2025-04-26 16:26:26,832 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:26,832 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:26,832 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:26:26,833 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:26,833 INFO L752 eck$LassoCheckResult]: Stem: "[91] $Ultimate##0-->L15: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[135] L15-->L30: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[138] L15-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" "[141] L16-->L52: Formula: (and (= v_thread3Thread1of1ForFork3_thidvar2_2 3) (= v_thread3Thread1of1ForFork3_thidvar1_2 3) (= v_thread3Thread1of1ForFork3_thidvar0_2 3)) InVars {} OutVars{thread3Thread1of1ForFork3_thidvar0=v_thread3Thread1of1ForFork3_thidvar0_2, thread3Thread1of1ForFork3_thidvar2=v_thread3Thread1of1ForFork3_thidvar2_2, thread3Thread1of1ForFork3_thidvar1=v_thread3Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork3_thidvar0, thread3Thread1of1ForFork3_thidvar2, thread3Thread1of1ForFork3_thidvar1]" "[144] L17-->L63: Formula: (and (= v_thread4Thread1of1ForFork4_thidvar2_2 4) (= v_thread4Thread1of1ForFork4_thidvar0_2 4) (= v_thread4Thread1of1ForFork4_thidvar1_2 4) (= v_thread4Thread1of1ForFork4_thidvar3_2 4)) InVars {} OutVars{thread4Thread1of1ForFork4_thidvar0=v_thread4Thread1of1ForFork4_thidvar0_2, thread4Thread1of1ForFork4_thidvar1=v_thread4Thread1of1ForFork4_thidvar1_2, thread4Thread1of1ForFork4_thidvar2=v_thread4Thread1of1ForFork4_thidvar2_2, thread4Thread1of1ForFork4_thidvar3=v_thread4Thread1of1ForFork4_thidvar3_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork4_thidvar0, thread4Thread1of1ForFork4_thidvar1, thread4Thread1of1ForFork4_thidvar2, thread4Thread1of1ForFork4_thidvar3]" [2025-04-26 16:26:26,833 INFO L754 eck$LassoCheckResult]: Loop: "[119] L63-->L65: Formula: (< v_x3_1 v_z1_5) InVars {x3=v_x3_1, z1=v_z1_5} OutVars{x3=v_x3_1, z1=v_z1_5} AuxVars[] AssignedVars[]" "[121] L65-->L66: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" "[123] L66-->L63: Formula: (= v_c_7 (+ v_c_8 1)) InVars {c=v_c_8} OutVars{c=v_c_7} AuxVars[] AssignedVars[c]" [2025-04-26 16:26:26,833 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:26,833 INFO L85 PathProgramCache]: Analyzing trace with hash 116828480, now seen corresponding path program 1 times [2025-04-26 16:26:26,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:26,833 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050603797] [2025-04-26 16:26:26,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:26,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:26,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:26,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:26,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:26,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:26,837 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:26,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:26,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:26,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:26,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:26,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:26,841 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:26,841 INFO L85 PathProgramCache]: Analyzing trace with hash 148024, now seen corresponding path program 1 times [2025-04-26 16:26:26,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:26,841 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533175562] [2025-04-26 16:26:26,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:26,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:26,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:26,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:26,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:26,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:26,845 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:26,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:26,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:26,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:26,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:26,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:26,848 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:26,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1513856153, now seen corresponding path program 1 times [2025-04-26 16:26:26,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:26,848 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828224458] [2025-04-26 16:26:26,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:26,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:26,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:26:26,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:26:26,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:26,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:26,857 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:26,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:26:26,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:26:26,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:26,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:26,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:26,884 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:26,884 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:26,884 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:26,884 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:26,884 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:26,884 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:26,884 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:26,884 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:26,884 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:26:26,884 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:26,884 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:26,885 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:26,890 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:26,907 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:26,907 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:26,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:26,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:26,911 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:26,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 16:26:26,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:26,914 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:26,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-04-26 16:26:26,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:26,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:26,932 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:26,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 16:26:26,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:26,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:27,004 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:27,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-04-26 16:26:27,008 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:27,008 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:27,008 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:27,008 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:27,008 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:27,008 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:27,008 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:27,008 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:27,008 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:26:27,008 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:27,008 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:27,009 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:27,018 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:27,037 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:27,037 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:27,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:27,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:27,039 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:27,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 16:26:27,041 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:26:27,051 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:27,051 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:27,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:27,051 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:27,051 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:27,052 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:27,052 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:27,053 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:27,056 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:27,056 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:26:27,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:27,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:27,058 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:27,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-04-26 16:26:27,060 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:27,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-04-26 16:26:27,063 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:27,063 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:27,063 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z1) = -1*x3 + 1*z1 Supporting invariants [] [2025-04-26 16:26:27,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-04-26 16:26:27,069 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:27,076 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:27,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:27,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:27,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:27,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:27,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:27,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:27,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:27,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:27,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:27,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:27,095 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:27,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:27,117 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 16:26:27,118 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 16:26:27,118 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48520 states and 287235 transitions. cyclomatic complexity: 242904 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 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 16:26:29,012 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48520 states and 287235 transitions. cyclomatic complexity: 242904. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 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 136956 states and 829202 transitions. Complement of second has 6 states. [2025-04-26 16:26:29,012 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 16:26:29,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 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 16:26:29,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-04-26 16:26:29,013 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 117 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:26:29,013 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:29,013 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 117 transitions. Stem has 8 letters. Loop has 3 letters. [2025-04-26 16:26:29,013 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:29,013 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 117 transitions. Stem has 5 letters. Loop has 6 letters. [2025-04-26 16:26:29,013 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:29,014 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136956 states and 829202 transitions. [2025-04-26 16:26:31,700 INFO L131 ngComponentsAnalysis]: Automaton has 1555 accepting balls. 4665 [2025-04-26 16:26:33,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136956 states to 83383 states and 508156 transitions. [2025-04-26 16:26:33,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18003 [2025-04-26 16:26:33,181 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20938 [2025-04-26 16:26:33,181 INFO L74 IsDeterministic]: Start isDeterministic. Operand 83383 states and 508156 transitions. [2025-04-26 16:26:33,181 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:33,181 INFO L218 hiAutomatonCegarLoop]: Abstraction has 83383 states and 508156 transitions. [2025-04-26 16:26:33,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83383 states and 508156 transitions. [2025-04-26 16:26:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83383 to 76608. [2025-04-26 16:26:35,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76608 states, 76608 states have (on average 6.151002506265664) internal successors, (in total 471216), 76607 states have internal predecessors, (471216), 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 16:26:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76608 states to 76608 states and 471216 transitions. [2025-04-26 16:26:36,188 INFO L240 hiAutomatonCegarLoop]: Abstraction has 76608 states and 471216 transitions. [2025-04-26 16:26:36,188 INFO L438 stractBuchiCegarLoop]: Abstraction has 76608 states and 471216 transitions. [2025-04-26 16:26:36,188 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:26:36,188 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 76608 states and 471216 transitions. [2025-04-26 16:26:36,836 INFO L131 ngComponentsAnalysis]: Automaton has 1555 accepting balls. 4665 [2025-04-26 16:26:36,836 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:36,836 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:36,837 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:26:36,837 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:36,838 INFO L752 eck$LassoCheckResult]: Stem: "[91] $Ultimate##0-->L15: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[135] L15-->L30: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[138] L15-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" "[141] L16-->L52: Formula: (and (= v_thread3Thread1of1ForFork3_thidvar2_2 3) (= v_thread3Thread1of1ForFork3_thidvar1_2 3) (= v_thread3Thread1of1ForFork3_thidvar0_2 3)) InVars {} OutVars{thread3Thread1of1ForFork3_thidvar0=v_thread3Thread1of1ForFork3_thidvar0_2, thread3Thread1of1ForFork3_thidvar2=v_thread3Thread1of1ForFork3_thidvar2_2, thread3Thread1of1ForFork3_thidvar1=v_thread3Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork3_thidvar0, thread3Thread1of1ForFork3_thidvar2, thread3Thread1of1ForFork3_thidvar1]" "[144] L17-->L63: Formula: (and (= v_thread4Thread1of1ForFork4_thidvar2_2 4) (= v_thread4Thread1of1ForFork4_thidvar0_2 4) (= v_thread4Thread1of1ForFork4_thidvar1_2 4) (= v_thread4Thread1of1ForFork4_thidvar3_2 4)) InVars {} OutVars{thread4Thread1of1ForFork4_thidvar0=v_thread4Thread1of1ForFork4_thidvar0_2, thread4Thread1of1ForFork4_thidvar1=v_thread4Thread1of1ForFork4_thidvar1_2, thread4Thread1of1ForFork4_thidvar2=v_thread4Thread1of1ForFork4_thidvar2_2, thread4Thread1of1ForFork4_thidvar3=v_thread4Thread1of1ForFork4_thidvar3_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork4_thidvar0, thread4Thread1of1ForFork4_thidvar1, thread4Thread1of1ForFork4_thidvar2, thread4Thread1of1ForFork4_thidvar3]" "[132] L18-->$Ultimate##0: Formula: (and (= 5 v_thread5Thread1of1ForFork0_thidvar4_2) (= 5 v_thread5Thread1of1ForFork0_thidvar3_2) (= 5 v_thread5Thread1of1ForFork0_thidvar2_2) (= 5 v_thread5Thread1of1ForFork0_thidvar1_2) (= 5 v_thread5Thread1of1ForFork0_thidvar0_2)) InVars {} OutVars{thread5Thread1of1ForFork0_thidvar4=v_thread5Thread1of1ForFork0_thidvar4_2, thread5Thread1of1ForFork0_thidvar3=v_thread5Thread1of1ForFork0_thidvar3_2, thread5Thread1of1ForFork0_thidvar2=v_thread5Thread1of1ForFork0_thidvar2_2, thread5Thread1of1ForFork0_thidvar1=v_thread5Thread1of1ForFork0_thidvar1_2, thread5Thread1of1ForFork0_thidvar0=v_thread5Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread5Thread1of1ForFork0_thidvar4, thread5Thread1of1ForFork0_thidvar3, thread5Thread1of1ForFork0_thidvar2, thread5Thread1of1ForFork0_thidvar1, thread5Thread1of1ForFork0_thidvar0]" "[124] $Ultimate##0-->L75-1: Formula: (< 3 v_f_10) InVars {f=v_f_10} OutVars{f=v_f_10} AuxVars[] AssignedVars[]" [2025-04-26 16:26:36,838 INFO L754 eck$LassoCheckResult]: Loop: "[126] L75-1-->L77: Formula: (< v_y2_1 v_z2_3) InVars {z2=v_z2_3, y2=v_y2_1} OutVars{z2=v_z2_3, y2=v_y2_1} AuxVars[] AssignedVars[]" "[128] L77-->L78: Formula: (= v_y2_2 (+ v_y2_3 1)) InVars {y2=v_y2_3} OutVars{y2=v_y2_2} AuxVars[] AssignedVars[y2]" "[129] L78-->L75-1: Formula: (= (+ v_c_9 1) v_c_10) InVars {c=v_c_10} OutVars{c=v_c_9} AuxVars[] AssignedVars[c]" [2025-04-26 16:26:36,838 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash 603023800, now seen corresponding path program 1 times [2025-04-26 16:26:36,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:36,838 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561607704] [2025-04-26 16:26:36,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:36,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:36,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:26:36,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:26:36,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:36,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:36,875 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 16:26:36,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:26:36,875 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561607704] [2025-04-26 16:26:36,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561607704] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:26:36,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:26:36,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-26 16:26:36,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963074004] [2025-04-26 16:26:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:26:36,878 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:26:36,879 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:36,879 INFO L85 PathProgramCache]: Analyzing trace with hash 154974, now seen corresponding path program 1 times [2025-04-26 16:26:36,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:36,879 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470294876] [2025-04-26 16:26:36,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:36,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:36,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:36,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:36,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:36,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:36,882 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:36,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:36,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:36,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:36,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:36,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:36,901 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:36,902 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:36,902 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:36,902 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:36,902 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:36,902 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:36,902 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:36,902 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:36,902 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:26:36,902 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:36,902 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:36,902 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:36,905 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:36,925 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:36,925 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:36,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:36,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:36,927 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:37,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-04-26 16:26:37,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:37,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:37,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2025-04-26 16:26:37,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:37,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:37,137 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:37,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-04-26 16:26:37,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:37,138 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:37,159 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:26:37,159 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=0}, {c=7}, {c=-8}] Lambdas: [0, 1, 1] Nus: [0, 0] [2025-04-26 16:26:37,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-04-26 16:26:37,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:37,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:37,166 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:37,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-04-26 16:26:37,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:37,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:37,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-04-26 16:26:37,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:37,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:37,183 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:37,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-04-26 16:26:37,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:37,185 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:37,244 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:37,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:37,248 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:37,249 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:37,249 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:37,249 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:37,249 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:37,249 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:37,249 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:37,249 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:37,249 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:26:37,249 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:37,249 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:37,249 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:37,252 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:37,267 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:37,267 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:37,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:37,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:37,269 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:37,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-04-26 16:26:37,271 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 16:26:37,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:37,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:37,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:37,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:37,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:37,281 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:37,281 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:37,282 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:26:37,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-04-26 16:26:37,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:37,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:37,289 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:37,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-04-26 16:26:37,290 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 16:26:37,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:37,299 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:37,300 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:37,300 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:37,300 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:37,301 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:37,301 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:37,302 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:37,305 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:37,305 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:26:37,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:37,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:37,306 INFO L229 MonitoredProcess]: Starting monitored process 30 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 16:26:37,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-04-26 16:26:37,308 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:37,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2025-04-26 16:26:37,311 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:37,311 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:37,311 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y2, z2) = -1*y2 + 1*z2 Supporting invariants [] [2025-04-26 16:26:37,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2025-04-26 16:26:37,316 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:37,325 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:37,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:26:37,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:26:37,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:37,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:37,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:37,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:37,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:37,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:37,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:37,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:37,346 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:37,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:37,371 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 16:26:37,371 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 16:26:37,372 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 76608 states and 471216 transitions. cyclomatic complexity: 400309 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (in total 10), 4 states have internal predecessors, (10), 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 16:26:39,767 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 76608 states and 471216 transitions. cyclomatic complexity: 400309. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (in total 10), 4 states have internal predecessors, (10), 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 180757 states and 1140044 transitions. Complement of second has 6 states. [2025-04-26 16:26:39,767 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 16:26:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (in total 10), 4 states have internal predecessors, (10), 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 16:26:39,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-04-26 16:26:39,768 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 124 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 16:26:39,768 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:39,768 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 124 transitions. Stem has 10 letters. Loop has 3 letters. [2025-04-26 16:26:39,768 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:39,768 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 124 transitions. Stem has 7 letters. Loop has 6 letters. [2025-04-26 16:26:39,769 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:39,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180757 states and 1140044 transitions. [2025-04-26 16:26:43,396 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:26:43,396 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180757 states to 0 states and 0 transitions. [2025-04-26 16:26:43,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:26:43,397 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:26:43,397 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:26:43,397 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:26:43,397 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:26:43,397 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:26:43,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:26:43,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:26:43,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:26:43,400 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (in total 7), 2 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 16:26:43,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:26:43,401 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-04-26 16:26:43,401 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-04-26 16:26:43,402 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:26:43,402 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-04-26 16:26:43,402 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:26:43,402 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:26:43,402 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:26:43,402 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:26:43,402 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:26:43,402 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:26:43,402 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-26 16:26:43,402 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:26:43,402 INFO L340 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-04-26 16:26:43,402 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:26:43,402 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:26:43,403 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:26:43,408 INFO L201 PluginConnector]: Adding new model pc5v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:26:43 BoogieIcfgContainer [2025-04-26 16:26:43,408 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:26:43,408 INFO L158 Benchmark]: Toolchain (without parser) took 32618.63ms. Allocated memory was 167.8MB in the beginning and 7.3GB in the end (delta: 7.2GB). Free memory was 95.4MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2025-04-26 16:26:43,408 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.17ms. Allocated memory is still 167.8MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:26:43,408 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.59ms. Allocated memory is still 167.8MB. Free memory was 95.4MB in the beginning and 92.8MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:26:43,409 INFO L158 Benchmark]: Boogie Preprocessor took 16.66ms. Allocated memory is still 167.8MB. Free memory was 92.8MB in the beginning and 91.9MB in the end (delta: 905.6kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:26:43,409 INFO L158 Benchmark]: RCFGBuilder took 177.90ms. Allocated memory is still 167.8MB. Free memory was 91.7MB in the beginning and 81.8MB in the end (delta: 9.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-26 16:26:43,409 INFO L158 Benchmark]: BuchiAutomizer took 32383.28ms. Allocated memory was 167.8MB in the beginning and 7.3GB in the end (delta: 7.2GB). Free memory was 81.8MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2025-04-26 16:26:43,411 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.17ms. Allocated memory is still 167.8MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.59ms. Allocated memory is still 167.8MB. Free memory was 95.4MB in the beginning and 92.8MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.66ms. Allocated memory is still 167.8MB. Free memory was 92.8MB in the beginning and 91.9MB in the end (delta: 905.6kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 177.90ms. Allocated memory is still 167.8MB. Free memory was 91.7MB in the beginning and 81.8MB in the end (delta: 9.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 32383.28ms. Allocated memory was 167.8MB in the beginning and 7.3GB in the end (delta: 7.2GB). Free memory was 81.8MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 32.2s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.3s. Büchi inclusion checks took 6.9s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 7.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 18001 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 12.6s Buchi closure took 0.2s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 396 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 391 mSDsluCounter, 628 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 340 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 259 IncrementalHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 288 mSDtfsCounter, 259 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 38ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z1 and consists of 4 locations. One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + z1 and consists of 4 locations. One deterministic module has affine ranking function -1 * x3 + z1 and consists of 4 locations. One deterministic module has affine ranking function -1 * y2 + z2 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:26:43,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...