/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/pc4.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:47:15,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:47:15,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:47:15,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:47:15,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:47:15,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:47:15,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:47:15,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:47:15,137 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:47:15,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:47:15,137 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:47:15,137 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:47:15,137 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:47:15,137 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:47:15,137 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:47:15,137 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:47:15,137 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:47:15,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:47:15,138 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:47:15,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:47:15,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:47:15,139 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:47:15,139 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:47:15,139 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:47:15,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:47:15,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:47:15,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:47:15,382 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:47:15,383 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:47:15,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pc4.c.bpl [2025-02-17 22:47:15,384 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pc4.c.bpl' [2025-02-17 22:47:15,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:47:15,402 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:47:15,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:47:15,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:47:15,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:47:15,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:15" (1/1) ... [2025-02-17 22:47:15,414 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:15" (1/1) ... [2025-02-17 22:47:15,419 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:47:15,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:47:15,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:47:15,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:47:15,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:47:15,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:15" (1/1) ... [2025-02-17 22:47:15,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:15" (1/1) ... [2025-02-17 22:47:15,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:15" (1/1) ... [2025-02-17 22:47:15,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:15" (1/1) ... [2025-02-17 22:47:15,429 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:15" (1/1) ... [2025-02-17 22:47:15,430 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:15" (1/1) ... [2025-02-17 22:47:15,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:15" (1/1) ... [2025-02-17 22:47:15,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:15" (1/1) ... [2025-02-17 22:47:15,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:15" (1/1) ... [2025-02-17 22:47:15,435 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:47:15,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:47:15,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:47:15,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:47:15,437 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:15" (1/1) ... [2025-02-17 22:47:15,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:15,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:15,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:15,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-17 22:47:15,488 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:47:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:47:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:47:15,489 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:47:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:47:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:47:15,489 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:47:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:47:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:47:15,489 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:47:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:47:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:47:15,489 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:47:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:47:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:47:15,490 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:47:15,522 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:47:15,523 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:47:15,605 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:47:15,605 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:47:15,616 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:47:15,616 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:47:15,618 INFO L201 PluginConnector]: Adding new model pc4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:47:15 BoogieIcfgContainer [2025-02-17 22:47:15,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:47:15,618 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:47:15,618 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:47:15,623 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:47:15,624 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:47:15,624 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:15" (1/2) ... [2025-02-17 22:47:15,625 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3830feea and model type pc4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:47:15, skipping insertion in model container [2025-02-17 22:47:15,625 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:47:15,625 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:47:15" (2/2) ... [2025-02-17 22:47:15,626 INFO L363 chiAutomizerObserver]: Analyzing ICFG pc4.c.bpl [2025-02-17 22:47:15,687 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-17 22:47:15,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 42 transitions, 112 flow [2025-02-17 22:47:15,748 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-02-17 22:47:15,750 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-17 22:47:15,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 34 events. 4/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-17 22:47:15,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 42 transitions, 112 flow [2025-02-17 22:47:15,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 34 transitions, 92 flow [2025-02-17 22:47:15,765 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:47:15,765 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:47:15,765 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:47:15,765 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:47:15,765 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:47:15,765 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:47:15,766 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:47:15,766 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:47:15,767 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:47:16,031 INFO L131 ngComponentsAnalysis]: Automaton has 265 accepting balls. 1653 [2025-02-17 22:47:16,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:16,031 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:16,034 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:47:16,035 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:47:16,035 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:47:16,036 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 1815 states, but on-demand construction may add more states [2025-02-17 22:47:16,074 INFO L131 ngComponentsAnalysis]: Automaton has 265 accepting balls. 1653 [2025-02-17 22:47:16,074 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:16,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:16,075 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:47:16,075 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:47:16,080 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[111] L14-->L27: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" [2025-02-17 22:47:16,081 INFO L754 eck$LassoCheckResult]: Loop: "[83] L27-->L29: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[85] L29-->L30: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[87] L30-->L27: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-02-17 22:47:16,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:16,087 INFO L85 PathProgramCache]: Analyzing trace with hash 3397, now seen corresponding path program 1 times [2025-02-17 22:47:16,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:16,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700793640] [2025-02-17 22:47:16,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:16,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:16,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:16,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:16,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:16,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:16,147 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:16,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:16,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:16,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:16,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:16,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:16,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:16,170 INFO L85 PathProgramCache]: Analyzing trace with hash 112276, now seen corresponding path program 1 times [2025-02-17 22:47:16,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:16,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681297861] [2025-02-17 22:47:16,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:16,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:16,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:16,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:16,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:16,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:16,180 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:16,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:16,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:16,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:16,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:16,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:16,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:16,187 INFO L85 PathProgramCache]: Analyzing trace with hash 101282512, now seen corresponding path program 1 times [2025-02-17 22:47:16,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:16,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705401386] [2025-02-17 22:47:16,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:16,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:16,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:16,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:16,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:16,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:16,198 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:16,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:16,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:16,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:16,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:16,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:16,267 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:16,267 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:16,267 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:16,268 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:16,268 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:16,268 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:16,268 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:16,268 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:16,268 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:47:16,268 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:16,268 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:16,279 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:16,290 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:16,342 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:16,343 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:16,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:16,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:16,347 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:16,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-17 22:47:16,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:16,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:16,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:16,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:16,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:16,377 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:16,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-17 22:47:16,380 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:16,380 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:16,416 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:47:16,416 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-02-17 22:47:16,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:16,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:16,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:16,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:16,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-17 22:47:16,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:16,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:16,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:16,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:16,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:16,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:16,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-17 22:47:16,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:16,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:16,516 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:16,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:16,521 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:16,521 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:16,521 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:16,521 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:16,521 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:16,521 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:16,521 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:16,521 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:16,521 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:47:16,521 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:16,521 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:16,522 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:16,526 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:16,565 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:16,573 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:16,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:16,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:16,578 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:16,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-17 22:47:16,581 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:47:16,594 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:16,595 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:16,595 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:16,595 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:16,595 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:16,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:16,600 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:16,602 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:47:16,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-17 22:47:16,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:16,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:16,610 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:16,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-17 22:47:16,613 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:47:16,622 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:16,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:16,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:16,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:16,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:16,624 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:16,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:16,626 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:16,629 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:47:16,629 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:47:16,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:16,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:16,633 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:16,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-17 22:47:16,635 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:16,635 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:16,635 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:16,636 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-02-17 22:47:16,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:16,646 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:16,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:16,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:16,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:16,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:16,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:16,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:16,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:16,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:16,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:16,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:16,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:16,693 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:16,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:16,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:16,792 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:47:16,807 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 1815 states, but on-demand construction may add more states Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:17,021 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 1815 states, but on-demand construction may add more states. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 4406 states and 18422 transitions. Complement of second has 6 states. [2025-02-17 22:47:17,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:47:17,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:17,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2025-02-17 22:47:17,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 79 transitions. Stem has 2 letters. Loop has 3 letters. [2025-02-17 22:47:17,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:17,035 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 79 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:47:17,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:17,035 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 79 transitions. Stem has 2 letters. Loop has 6 letters. [2025-02-17 22:47:17,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:17,036 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4406 states and 18422 transitions. [2025-02-17 22:47:17,099 INFO L131 ngComponentsAnalysis]: Automaton has 315 accepting balls. 1533 [2025-02-17 22:47:17,157 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4406 states to 3205 states and 13661 transitions. [2025-02-17 22:47:17,159 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1723 [2025-02-17 22:47:17,170 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2218 [2025-02-17 22:47:17,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3205 states and 13661 transitions. [2025-02-17 22:47:17,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:17,173 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3205 states and 13661 transitions. [2025-02-17 22:47:17,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3205 states and 13661 transitions. [2025-02-17 22:47:17,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3205 to 2711. [2025-02-17 22:47:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2711 states have (on average 4.225746956842493) internal successors, (11456), 2710 states have internal predecessors, (11456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:17,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 11456 transitions. [2025-02-17 22:47:17,383 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2711 states and 11456 transitions. [2025-02-17 22:47:17,383 INFO L432 stractBuchiCegarLoop]: Abstraction has 2711 states and 11456 transitions. [2025-02-17 22:47:17,383 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:47:17,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2711 states and 11456 transitions. [2025-02-17 22:47:17,405 INFO L131 ngComponentsAnalysis]: Automaton has 315 accepting balls. 1533 [2025-02-17 22:47:17,405 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:17,405 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:17,406 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:47:17,406 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:47:17,406 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[111] L14-->L27: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[114] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" [2025-02-17 22:47:17,407 INFO L754 eck$LassoCheckResult]: Loop: "[89] L38-->L40: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[91] L40-->L41: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[93] L41-->L38: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-02-17 22:47:17,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:17,407 INFO L85 PathProgramCache]: Analyzing trace with hash 105421, now seen corresponding path program 1 times [2025-02-17 22:47:17,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:17,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88388510] [2025-02-17 22:47:17,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:17,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:17,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:17,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:17,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:17,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:17,411 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:17,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:17,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:17,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:17,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:17,413 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:17,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:17,414 INFO L85 PathProgramCache]: Analyzing trace with hash 118234, now seen corresponding path program 1 times [2025-02-17 22:47:17,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:17,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557918113] [2025-02-17 22:47:17,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:17,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:17,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:17,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:17,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:17,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:17,417 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:17,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:17,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:17,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:17,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:17,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:17,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1154281842, now seen corresponding path program 1 times [2025-02-17 22:47:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:17,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678373692] [2025-02-17 22:47:17,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:17,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:17,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:17,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:17,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:17,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:17,423 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:17,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:17,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:17,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:17,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:17,426 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:17,446 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:17,446 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:17,446 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:17,446 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:17,446 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:17,446 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:17,446 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:17,446 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:17,446 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:47:17,446 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:17,446 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:17,447 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:17,452 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:17,474 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:17,474 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:17,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:17,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:17,477 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:17,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-17 22:47:17,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:17,479 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:17,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-02-17 22:47:17,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:17,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:17,497 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:17,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-17 22:47:17,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:17,500 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:17,564 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:17,567 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 [2025-02-17 22:47:17,568 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:17,568 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:17,568 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:17,568 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:17,568 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:17,568 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:17,568 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:17,568 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:17,568 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:47:17,568 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:17,568 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:17,569 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:17,575 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:17,635 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:17,635 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:17,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:17,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:17,638 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:17,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-17 22:47:17,641 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:47:17,652 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:17,652 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:17,652 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:17,652 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:17,652 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:17,654 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:17,654 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:17,658 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:17,662 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:47:17,662 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:47:17,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:17,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:17,664 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:17,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-17 22:47:17,666 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:17,666 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:17,666 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:17,666 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-02-17 22:47:17,671 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 [2025-02-17 22:47:17,673 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:17,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:17,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:17,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:17,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:17,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:17,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:17,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:17,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:17,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:17,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:17,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:17,702 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:17,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:17,739 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:47:17,739 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2711 states and 11456 transitions. cyclomatic complexity: 9133 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:17,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:17,911 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2711 states and 11456 transitions. cyclomatic complexity: 9133. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 6972 states and 30803 transitions. Complement of second has 6 states. [2025-02-17 22:47:17,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:47:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-02-17 22:47:17,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 83 transitions. Stem has 3 letters. Loop has 3 letters. [2025-02-17 22:47:17,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:17,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 83 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-17 22:47:17,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:17,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 83 transitions. Stem has 3 letters. Loop has 6 letters. [2025-02-17 22:47:17,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:17,913 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6972 states and 30803 transitions. [2025-02-17 22:47:18,027 INFO L131 ngComponentsAnalysis]: Automaton has 338 accepting balls. 1272 [2025-02-17 22:47:18,125 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6972 states to 5048 states and 22513 transitions. [2025-02-17 22:47:18,128 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1917 [2025-02-17 22:47:18,147 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2460 [2025-02-17 22:47:18,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5048 states and 22513 transitions. [2025-02-17 22:47:18,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:18,151 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5048 states and 22513 transitions. [2025-02-17 22:47:18,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states and 22513 transitions. [2025-02-17 22:47:18,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 4505. [2025-02-17 22:47:18,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4505 states, 4505 states have (on average 4.480355160932297) internal successors, (20184), 4504 states have internal predecessors, (20184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4505 states to 4505 states and 20184 transitions. [2025-02-17 22:47:18,334 INFO L240 hiAutomatonCegarLoop]: Abstraction has 4505 states and 20184 transitions. [2025-02-17 22:47:18,335 INFO L432 stractBuchiCegarLoop]: Abstraction has 4505 states and 20184 transitions. [2025-02-17 22:47:18,335 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:47:18,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4505 states and 20184 transitions. [2025-02-17 22:47:18,369 INFO L131 ngComponentsAnalysis]: Automaton has 338 accepting balls. 1272 [2025-02-17 22:47:18,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:18,370 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:18,370 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:47:18,371 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:47:18,371 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[111] L14-->L27: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[114] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" "[117] L15-->$Ultimate##0: 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]" "[94] $Ultimate##0-->L50-1: Formula: (< 1 v_f_5) InVars {f=v_f_5} OutVars{f=v_f_5} AuxVars[] AssignedVars[]" [2025-02-17 22:47:18,371 INFO L754 eck$LassoCheckResult]: Loop: "[96] L50-1-->L52: 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[]" "[98] L52-->L53: Formula: (= v_y1_2 (+ v_y1_3 1)) InVars {y1=v_y1_3} OutVars{y1=v_y1_2} AuxVars[] AssignedVars[y1]" "[99] L53-->L50-1: Formula: (= (+ v_c_5 1) v_c_6) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-02-17 22:47:18,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:18,372 INFO L85 PathProgramCache]: Analyzing trace with hash 101313302, now seen corresponding path program 1 times [2025-02-17 22:47:18,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:18,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413940739] [2025-02-17 22:47:18,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:18,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:18,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:18,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:18,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:18,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:18,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:47:18,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413940739] [2025-02-17 22:47:18,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413940739] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:47:18,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:47:18,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-17 22:47:18,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713734862] [2025-02-17 22:47:18,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:47:18,426 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:47:18,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash 125184, now seen corresponding path program 1 times [2025-02-17 22:47:18,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:18,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282517815] [2025-02-17 22:47:18,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:18,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:18,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:18,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:18,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:18,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:18,431 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:18,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:18,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:18,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:18,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:18,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:18,467 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:18,467 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:18,467 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:18,467 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:18,467 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:18,467 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:18,467 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:18,467 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:18,467 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:47:18,467 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:18,467 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:18,468 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:18,471 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:18,494 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:18,494 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:18,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:18,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:18,497 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:18,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-17 22:47:18,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:18,500 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:18,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:18,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:18,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:18,520 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:18,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-02-17 22:47:18,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:18,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:18,584 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:47:18,584 INFO L401 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] [2025-02-17 22:47:18,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-17 22:47:18,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:18,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:18,592 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:18,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-02-17 22:47:18,593 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:18,593 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:18,609 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 [2025-02-17 22:47:18,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:18,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:18,611 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:18,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-02-17 22:47:18,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:18,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:18,681 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:18,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-02-17 22:47:18,685 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:18,685 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:18,685 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:18,685 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:18,685 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:18,685 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:18,685 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:18,685 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:18,685 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:47:18,685 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:18,685 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:18,686 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:18,690 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:18,714 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:18,715 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:18,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:18,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:18,716 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:18,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-02-17 22:47:18,719 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:47:18,729 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:18,729 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:18,729 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:18,729 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:18,729 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:18,730 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:18,730 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:18,732 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:47:18,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:18,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:18,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:18,739 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:18,742 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:47:18,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-02-17 22:47:18,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:18,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:18,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:18,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:18,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:18,754 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:18,754 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:18,756 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:18,760 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:47:18,760 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:47:18,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:18,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:18,763 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:18,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-02-17 22:47:18,764 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:18,764 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:18,764 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:18,765 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y1, z1) = -1*y1 + 1*z1 Supporting invariants [] [2025-02-17 22:47:18,771 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 [2025-02-17 22:47:18,772 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:18,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:18,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:18,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:18,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:18,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:18,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:18,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:18,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:18,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:18,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:18,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:18,803 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:18,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:18,837 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:47:18,837 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 4505 states and 20184 transitions. cyclomatic complexity: 16251 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:18,992 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 4505 states and 20184 transitions. cyclomatic complexity: 16251. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12579 states and 60390 transitions. Complement of second has 6 states. [2025-02-17 22:47:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:47:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-02-17 22:47:18,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:47:18,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:18,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 8 letters. Loop has 3 letters. [2025-02-17 22:47:18,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:18,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 5 letters. Loop has 6 letters. [2025-02-17 22:47:18,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:18,996 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12579 states and 60390 transitions. [2025-02-17 22:47:19,081 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Exception during sending of exit command (exit): Broken pipe [2025-02-17 22:47:19,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-02-17 22:47:19,200 INFO L131 ngComponentsAnalysis]: Automaton has 259 accepting balls. 777 [2025-02-17 22:47:19,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12579 states to 8195 states and 39366 transitions. [2025-02-17 22:47:19,322 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2239 [2025-02-17 22:47:19,332 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3070 [2025-02-17 22:47:19,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8195 states and 39366 transitions. [2025-02-17 22:47:19,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:19,332 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8195 states and 39366 transitions. [2025-02-17 22:47:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8195 states and 39366 transitions. [2025-02-17 22:47:19,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8195 to 7092. [2025-02-17 22:47:19,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7092 states, 7092 states have (on average 4.936971235194585) internal successors, (35013), 7091 states have internal predecessors, (35013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:19,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7092 states to 7092 states and 35013 transitions. [2025-02-17 22:47:19,645 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7092 states and 35013 transitions. [2025-02-17 22:47:19,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:47:19,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:47:19,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:47:19,653 INFO L87 Difference]: Start difference. First operand 7092 states and 35013 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:19,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:47:19,830 INFO L93 Difference]: Finished difference Result 2839 states and 12211 transitions. [2025-02-17 22:47:19,830 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2839 states and 12211 transitions. [2025-02-17 22:47:19,850 INFO L131 ngComponentsAnalysis]: Automaton has 163 accepting balls. 489 [2025-02-17 22:47:19,872 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2839 states to 2836 states and 12202 transitions. [2025-02-17 22:47:19,872 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1162 [2025-02-17 22:47:19,875 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1162 [2025-02-17 22:47:19,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2836 states and 12202 transitions. [2025-02-17 22:47:19,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:19,875 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2836 states and 12202 transitions. [2025-02-17 22:47:19,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states and 12202 transitions. [2025-02-17 22:47:19,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 2836. [2025-02-17 22:47:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 2836 states have (on average 4.302538787023978) internal successors, (12202), 2835 states have internal predecessors, (12202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:19,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 12202 transitions. [2025-02-17 22:47:19,984 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2836 states and 12202 transitions. [2025-02-17 22:47:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:47:19,984 INFO L432 stractBuchiCegarLoop]: Abstraction has 2836 states and 12202 transitions. [2025-02-17 22:47:19,985 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:47:19,985 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2836 states and 12202 transitions. [2025-02-17 22:47:20,001 INFO L131 ngComponentsAnalysis]: Automaton has 163 accepting balls. 489 [2025-02-17 22:47:20,001 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:20,001 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:20,002 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:47:20,002 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:47:20,002 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[111] L14-->L27: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[114] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" "[82] L27-->L32: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[84] L32-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[117] L15-->$Ultimate##0: 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]" "[108] L16-->$Ultimate##0: Formula: (and (= 4 v_thread4Thread1of1ForFork0_thidvar3_2) (= 4 v_thread4Thread1of1ForFork0_thidvar1_2) (= 4 v_thread4Thread1of1ForFork0_thidvar2_2) (= 4 v_thread4Thread1of1ForFork0_thidvar0_2)) InVars {} OutVars{thread4Thread1of1ForFork0_thidvar3=v_thread4Thread1of1ForFork0_thidvar3_2, thread4Thread1of1ForFork0_thidvar2=v_thread4Thread1of1ForFork0_thidvar2_2, thread4Thread1of1ForFork0_thidvar1=v_thread4Thread1of1ForFork0_thidvar1_2, thread4Thread1of1ForFork0_thidvar0=v_thread4Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork0_thidvar3, thread4Thread1of1ForFork0_thidvar2, thread4Thread1of1ForFork0_thidvar1, thread4Thread1of1ForFork0_thidvar0]" "[100] $Ultimate##0-->L61-1: Formula: (< 1 v_f_7) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" [2025-02-17 22:47:20,002 INFO L754 eck$LassoCheckResult]: Loop: "[102] L61-1-->L63: 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[]" "[104] L63-->L64: Formula: (= v_y2_2 (+ v_y2_3 1)) InVars {y2=v_y2_3} OutVars{y2=v_y2_2} AuxVars[] AssignedVars[y2]" "[105] L64-->L61-1: Formula: (= v_c_8 (+ v_c_7 1)) InVars {c=v_c_8} OutVars{c=v_c_7} AuxVars[] AssignedVars[c]" [2025-02-17 22:47:20,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:20,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1169934466, now seen corresponding path program 1 times [2025-02-17 22:47:20,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:20,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753783218] [2025-02-17 22:47:20,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:20,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:20,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:47:20,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:47:20,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:20,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:20,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:47:20,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753783218] [2025-02-17 22:47:20,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753783218] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:47:20,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:47:20,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:47:20,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025742975] [2025-02-17 22:47:20,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:47:20,046 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:47:20,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:20,047 INFO L85 PathProgramCache]: Analyzing trace with hash 131142, now seen corresponding path program 1 times [2025-02-17 22:47:20,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:20,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64346843] [2025-02-17 22:47:20,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:20,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:20,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:20,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:20,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:20,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:20,052 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:20,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:20,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:20,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:20,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:20,054 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:20,079 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:20,079 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:20,079 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:20,079 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:20,079 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:20,079 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:20,079 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:20,079 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:20,079 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:47:20,079 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:20,079 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:20,080 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:20,083 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:20,105 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:20,105 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:20,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:20,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:20,107 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:20,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-02-17 22:47:20,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:20,110 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:20,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-02-17 22:47:20,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:20,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:20,127 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:20,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-02-17 22:47:20,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:20,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:20,150 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:47:20,150 INFO L401 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] [2025-02-17 22:47:20,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-02-17 22:47:20,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:20,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:20,157 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:20,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-02-17 22:47:20,159 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:20,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:20,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-02-17 22:47:20,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:20,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:20,176 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:20,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-02-17 22:47:20,178 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:20,178 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:20,238 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:20,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:20,243 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:20,243 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:20,243 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:20,243 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:20,243 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:20,243 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:20,243 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:20,243 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:20,243 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:47:20,243 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:20,243 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:20,244 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:20,247 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:20,269 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:20,269 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:20,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:20,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:20,271 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:20,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-02-17 22:47:20,274 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:47:20,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:20,284 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:20,284 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:20,284 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:20,284 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:20,285 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:20,285 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:20,286 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:47:20,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:20,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:20,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:20,293 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:20,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-02-17 22:47:20,295 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:47:20,304 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:20,305 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:20,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:20,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:20,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:20,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:20,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:20,311 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:20,313 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:47:20,313 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:47:20,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:20,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:20,316 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:20,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-02-17 22:47:20,319 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:20,319 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:20,319 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:20,319 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y2, z2) = -1*y2 + 1*z2 Supporting invariants [] [2025-02-17 22:47:20,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-02-17 22:47:20,325 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:20,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:20,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:47:20,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:47:20,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:20,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:20,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:20,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:20,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:20,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:20,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:20,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:20,363 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:20,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:20,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:20,393 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:47:20,393 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2836 states and 12202 transitions. cyclomatic complexity: 9733 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:20,488 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2836 states and 12202 transitions. cyclomatic complexity: 9733. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 6719 states and 30189 transitions. Complement of second has 6 states. [2025-02-17 22:47:20,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:47:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2025-02-17 22:47:20,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 95 transitions. Stem has 8 letters. Loop has 3 letters. [2025-02-17 22:47:20,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:20,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 95 transitions. Stem has 11 letters. Loop has 3 letters. [2025-02-17 22:47:20,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:20,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 95 transitions. Stem has 8 letters. Loop has 6 letters. [2025-02-17 22:47:20,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:20,492 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6719 states and 30189 transitions. [2025-02-17 22:47:20,563 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:47:20,564 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6719 states to 0 states and 0 transitions. [2025-02-17 22:47:20,564 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:47:20,564 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:47:20,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:47:20,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:47:20,564 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:20,564 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:20,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:47:20,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-17 22:47:20,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-17 22:47:20,565 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:20,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:47:20,565 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-02-17 22:47:20,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-02-17 22:47:20,565 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:47:20,565 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-02-17 22:47:20,565 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:47:20,565 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:47:20,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:47:20,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:47:20,565 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:20,565 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:20,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-17 22:47:20,567 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:20,567 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:47:20,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:47:20,567 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:47:20,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:47:20,577 INFO L201 PluginConnector]: Adding new model pc4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:47:20 BoogieIcfgContainer [2025-02-17 22:47:20,577 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:47:20,578 INFO L158 Benchmark]: Toolchain (without parser) took 5175.45ms. Allocated memory was 159.4MB in the beginning and 805.3MB in the end (delta: 645.9MB). Free memory was 86.5MB in the beginning and 503.9MB in the end (delta: -417.4MB). Peak memory consumption was 230.6MB. Max. memory is 8.0GB. [2025-02-17 22:47:20,578 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:47:20,578 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.26ms. Allocated memory is still 159.4MB. Free memory was 86.4MB in the beginning and 85.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:47:20,578 INFO L158 Benchmark]: Boogie Preprocessor took 13.28ms. Allocated memory is still 159.4MB. Free memory was 85.1MB in the beginning and 84.4MB in the end (delta: 728.9kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:47:20,578 INFO L158 Benchmark]: RCFGBuilder took 181.20ms. Allocated memory is still 159.4MB. Free memory was 84.4MB in the beginning and 75.1MB in the end (delta: 9.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-02-17 22:47:20,578 INFO L158 Benchmark]: BuchiAutomizer took 4958.81ms. Allocated memory was 159.4MB in the beginning and 805.3MB in the end (delta: 645.9MB). Free memory was 75.0MB in the beginning and 503.9MB in the end (delta: -428.9MB). Peak memory consumption was 218.0MB. Max. memory is 8.0GB. [2025-02-17 22:47:20,579 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.26ms. Allocated memory is still 159.4MB. Free memory was 86.4MB in the beginning and 85.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 13.28ms. Allocated memory is still 159.4MB. Free memory was 85.1MB in the beginning and 84.4MB in the end (delta: 728.9kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 181.20ms. Allocated memory is still 159.4MB. Free memory was 84.4MB in the beginning and 75.1MB in the end (delta: 9.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 4958.81ms. Allocated memory was 159.4MB in the beginning and 805.3MB in the end (delta: 645.9MB). Free memory was 75.0MB in the beginning and 503.9MB in the end (delta: -428.9MB). Peak memory consumption was 218.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z1 and consists of 4 locations. One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + z1 and consists of 4 locations. One deterministic module has affine ranking function -1 * y2 + z2 and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.8s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.1s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 2140 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.7s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 262 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 258 mSDsluCounter, 437 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 230 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 177 IncrementalHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 207 mSDtfsCounter, 177 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:47:20,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-02-17 22:47:20,794 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...