/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/interleaved4.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:25:43,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:25:43,733 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:25:43,736 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:25:43,737 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:25:43,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:25:43,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:25:43,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:25:43,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:25:43,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:25:43,757 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:25:43,757 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:25:43,757 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:25:43,757 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:25:43,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:25:43,758 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:25:43,759 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:25:43,760 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:25:43,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:25:43,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:25:43,760 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:25:43,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:25:43,760 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:25:43,760 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:25:43,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:25:43,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:25:43,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:25:43,983 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:25:43,984 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:25:43,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/interleaved4.c.bpl [2025-04-26 16:25:43,985 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/interleaved4.c.bpl' [2025-04-26 16:25:44,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:25:44,008 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:25:44,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:25:44,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:25:44,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:25:44,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:44" (1/1) ... [2025-04-26 16:25:44,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:44" (1/1) ... [2025-04-26 16:25:44,043 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:25:44,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:25:44,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:25:44,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:25:44,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:25:44,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:44" (1/1) ... [2025-04-26 16:25:44,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:44" (1/1) ... [2025-04-26 16:25:44,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:44" (1/1) ... [2025-04-26 16:25:44,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:44" (1/1) ... [2025-04-26 16:25:44,055 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:44" (1/1) ... [2025-04-26 16:25:44,055 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:44" (1/1) ... [2025-04-26 16:25:44,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:44" (1/1) ... [2025-04-26 16:25:44,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:44" (1/1) ... [2025-04-26 16:25:44,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:44" (1/1) ... [2025-04-26 16:25:44,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:25:44,075 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:25:44,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:25:44,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:25:44,076 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:44" (1/1) ... [2025-04-26 16:25:44,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:44,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:44,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:44,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-04-26 16:25:44,126 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:25:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:25:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:25:44,126 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:25:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:25:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:25:44,127 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:25:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:25:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:25:44,127 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:25:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:25:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:25:44,127 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:25:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:25:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:25:44,128 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:25:44,163 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:25:44,164 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:25:44,262 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:25:44,262 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:25:44,283 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:25:44,284 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:25:44,284 INFO L201 PluginConnector]: Adding new model interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:25:44 BoogieIcfgContainer [2025-04-26 16:25:44,284 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:25:44,285 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:25:44,285 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:25:44,290 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:25:44,291 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:25:44,291 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:44" (1/2) ... [2025-04-26 16:25:44,292 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@80dd24e and model type interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:25:44, skipping insertion in model container [2025-04-26 16:25:44,293 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:25:44,293 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:25:44" (2/2) ... [2025-04-26 16:25:44,294 INFO L376 chiAutomizerObserver]: Analyzing ICFG interleaved4.c.bpl [2025-04-26 16:25:44,351 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-26 16:25:44,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 42 transitions, 112 flow [2025-04-26 16:25:44,397 INFO L116 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-04-26 16:25:44,398 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-26 16:25:44,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 34 events. 4/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 86 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. [2025-04-26 16:25:44,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 42 transitions, 112 flow [2025-04-26 16:25:44,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 34 transitions, 92 flow [2025-04-26 16:25:44,404 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 43 places, 34 transitions, 92 flow [2025-04-26 16:25:44,412 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:25:44,413 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:25:44,413 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:25:44,413 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:25:44,413 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:25:44,413 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:25:44,413 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:25:44,413 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:25:44,414 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:25:44,666 INFO L131 ngComponentsAnalysis]: Automaton has 115 accepting balls. 1768 [2025-04-26 16:25:44,666 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:44,666 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:44,670 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:25:44,670 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:25:44,672 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:25:44,673 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 1815 states, but on-demand construction may add more states [2025-04-26 16:25:44,715 INFO L131 ngComponentsAnalysis]: Automaton has 115 accepting balls. 1768 [2025-04-26 16:25:44,716 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:44,716 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:44,716 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:25:44,716 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:25:44,721 INFO L752 eck$LassoCheckResult]: Stem: "[83] $Ultimate##0-->L16: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_f1_3 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[123] L16-->L33-1: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0]" [2025-04-26 16:25:44,721 INFO L754 eck$LassoCheckResult]: Loop: "[89] L33-1-->L31: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[91] L31-->L32: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[92] L32-->L33: Formula: (= v_f2_1 1) InVars {} OutVars{f2=v_f2_1} AuxVars[] AssignedVars[f2]" "[93] L33-->L33-1: Formula: (and (< 0 v_f1_6) (= v_f1_5 0)) InVars {f1=v_f1_6} OutVars{f1=v_f1_5} AuxVars[] AssignedVars[f1]" [2025-04-26 16:25:44,725 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:44,726 INFO L85 PathProgramCache]: Analyzing trace with hash 3657, now seen corresponding path program 1 times [2025-04-26 16:25:44,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:44,734 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039825614] [2025-04-26 16:25:44,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:44,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:44,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:44,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:44,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:44,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:44,800 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:44,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:44,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:44,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:44,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:44,822 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:44,825 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:44,826 INFO L85 PathProgramCache]: Analyzing trace with hash 3665316, now seen corresponding path program 1 times [2025-04-26 16:25:44,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:44,826 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247702093] [2025-04-26 16:25:44,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:44,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:44,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:44,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:44,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:44,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:44,842 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:44,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:44,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:44,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:44,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:44,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:44,851 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:44,855 INFO L85 PathProgramCache]: Analyzing trace with hash -914909204, now seen corresponding path program 1 times [2025-04-26 16:25:44,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:44,855 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009072842] [2025-04-26 16:25:44,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:44,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:44,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:25:44,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:25:44,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:44,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:44,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:25:44,936 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009072842] [2025-04-26 16:25:44,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009072842] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:25:44,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:25:44,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-26 16:25:44,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717810717] [2025-04-26 16:25:44,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:25:45,030 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:45,031 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:45,031 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:45,031 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:45,031 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:45,032 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:45,032 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:45,032 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:45,032 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:25:45,032 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:45,032 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:45,042 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:45,050 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:45,092 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:45,149 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:45,149 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:45,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:45,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:45,154 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:45,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-04-26 16:25:45,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:45,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:45,171 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:25:45,171 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f2=1} Honda state: {f2=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:25:45,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:45,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:45,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:45,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:45,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:25:45,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:45,185 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:45,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:45,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:45,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:45,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:45,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:25:45,206 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:45,206 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:45,232 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:45,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:45,237 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:45,237 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:45,237 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:45,237 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:45,237 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:45,237 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:45,237 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:45,237 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:45,237 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:25:45,237 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:45,237 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:45,238 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:45,244 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:45,250 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:45,290 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:45,293 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:45,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:45,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:45,303 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:45,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:25:45,309 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:45,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:45,324 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:45,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:45,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:45,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:45,344 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:45,344 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:45,347 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:45,351 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:25:45,352 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:45,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:45,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:45,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:45,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:25:45,363 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:45,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:45,366 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:45,367 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:45,367 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(f1) = 1*f1 Supporting invariants [] [2025-04-26 16:25:45,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:45,377 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:45,406 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:45,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:45,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:45,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:45,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:45,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:45,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:45,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:45,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:45,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:45,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:45,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:45,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:45,478 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2025-04-26 16:25:45,480 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 1815 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:45,665 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 1815 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 6254 states and 26052 transitions. Complement of second has 5 states. [2025-04-26 16:25:45,668 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-04-26 16:25:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2025-04-26 16:25:45,679 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 55 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:25:45,679 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:45,679 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 55 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 16:25:45,680 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:45,680 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 55 transitions. Stem has 2 letters. Loop has 8 letters. [2025-04-26 16:25:45,680 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:45,680 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6254 states and 26052 transitions. [2025-04-26 16:25:45,800 INFO L131 ngComponentsAnalysis]: Automaton has 342 accepting balls. 3108 [2025-04-26 16:25:45,935 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6254 states to 5316 states and 22214 transitions. [2025-04-26 16:25:45,936 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3274 [2025-04-26 16:25:45,954 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4062 [2025-04-26 16:25:45,955 INFO L74 IsDeterministic]: Start isDeterministic. Operand 5316 states and 22214 transitions. [2025-04-26 16:25:45,955 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:45,956 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5316 states and 22214 transitions. [2025-04-26 16:25:45,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5316 states and 22214 transitions. [2025-04-26 16:25:46,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5316 to 3870. [2025-04-26 16:25:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 3870 states have (on average 4.231007751937985) internal successors, (in total 16374), 3869 states have internal predecessors, (16374), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:46,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 16374 transitions. [2025-04-26 16:25:46,201 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3870 states and 16374 transitions. [2025-04-26 16:25:46,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:25:46,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:25:46,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:25:46,203 INFO L87 Difference]: Start difference. First operand 3870 states and 16374 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (in total 6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:46,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:25:46,288 INFO L93 Difference]: Finished difference Result 5143 states and 19756 transitions. [2025-04-26 16:25:46,288 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5143 states and 19756 transitions. [2025-04-26 16:25:46,403 INFO L131 ngComponentsAnalysis]: Automaton has 404 accepting balls. 3908 [2025-04-26 16:25:46,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5143 states to 4076 states and 15919 transitions. [2025-04-26 16:25:46,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4076 [2025-04-26 16:25:46,499 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4076 [2025-04-26 16:25:46,499 INFO L74 IsDeterministic]: Start isDeterministic. Operand 4076 states and 15919 transitions. [2025-04-26 16:25:46,523 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:25:46,523 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4076 states and 15919 transitions. [2025-04-26 16:25:46,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states and 15919 transitions. [2025-04-26 16:25:46,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 2584. [2025-04-26 16:25:46,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2584 states have (on average 3.946981424148607) internal successors, (in total 10199), 2583 states have internal predecessors, (10199), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 10199 transitions. [2025-04-26 16:25:46,635 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2584 states and 10199 transitions. [2025-04-26 16:25:46,636 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:25:46,636 INFO L438 stractBuchiCegarLoop]: Abstraction has 2584 states and 10199 transitions. [2025-04-26 16:25:46,637 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:25:46,637 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2584 states and 10199 transitions. [2025-04-26 16:25:46,667 INFO L131 ngComponentsAnalysis]: Automaton has 188 accepting balls. 2540 [2025-04-26 16:25:46,667 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:46,667 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:46,668 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:25:46,668 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:25:46,668 INFO L752 eck$LassoCheckResult]: Stem: "[83] $Ultimate##0-->L16: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_f1_3 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[123] L16-->L33-1: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0]" "[114] L16-1-->L44: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" [2025-04-26 16:25:46,669 INFO L754 eck$LassoCheckResult]: Loop: "[95] L44-->L46: Formula: (< v_x2_2 v_z_4) InVars {x2=v_x2_2, z=v_z_4} OutVars{x2=v_x2_2, z=v_z_4} AuxVars[] AssignedVars[]" "[97] L46-->L46-1: Formula: (and (< 0 v_f2_6) (= v_f2_5 0)) InVars {f2=v_f2_6} OutVars{f2=v_f2_5} AuxVars[] AssignedVars[f2]" "[98] L46-1-->L52: Formula: (= v_x2_3 (+ v_x2_4 1)) InVars {x2=v_x2_4} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[x2]" "[99] L52-->L44: Formula: (= v_f3_1 1) InVars {} OutVars{f3=v_f3_1} AuxVars[] AssignedVars[f3]" [2025-04-26 16:25:46,669 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash 113481, now seen corresponding path program 1 times [2025-04-26 16:25:46,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:46,670 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353205387] [2025-04-26 16:25:46,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:46,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:46,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:46,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:46,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:46,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:46,677 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:46,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:46,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:46,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:46,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:46,681 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:46,682 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:46,682 INFO L85 PathProgramCache]: Analyzing trace with hash 3850020, now seen corresponding path program 1 times [2025-04-26 16:25:46,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:46,682 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599979168] [2025-04-26 16:25:46,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:46,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:46,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:46,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:46,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:46,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:46,686 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:46,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:46,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:46,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:46,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:46,690 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:46,690 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:46,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1725797996, now seen corresponding path program 1 times [2025-04-26 16:25:46,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:46,690 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540683159] [2025-04-26 16:25:46,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:46,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:46,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:25:46,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:25:46,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:46,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:46,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:25:46,713 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540683159] [2025-04-26 16:25:46,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540683159] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:25:46,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:25:46,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:25:46,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914527054] [2025-04-26 16:25:46,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:25:46,761 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:46,761 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:46,761 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:46,761 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:46,761 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:46,761 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:46,761 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:46,761 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:46,761 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:25:46,761 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:46,761 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:46,762 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:46,768 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:46,772 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:46,807 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:46,807 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:46,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:46,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:46,811 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:46,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:25:46,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:46,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:46,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:46,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:46,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:46,835 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:46,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:25:46,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:46,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:46,913 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:46,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:46,918 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:46,918 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:46,918 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:46,918 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:46,918 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:46,918 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:46,918 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:46,918 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:46,918 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:25:46,919 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:46,919 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:46,919 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:46,925 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:46,932 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:46,970 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:46,970 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:46,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:46,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:46,972 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:46,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:25:46,975 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:46,986 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:46,986 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:46,986 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:46,986 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:46,986 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:46,988 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:46,988 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:46,990 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:46,996 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:25:46,996 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:46,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:46,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:46,999 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:47,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:25:47,002 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:47,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 16:25:47,006 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:47,006 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:47,006 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-04-26 16:25:47,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:25:47,013 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:47,036 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:47,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:47,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:47,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:47,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:47,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:47,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:47,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:47,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:47,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:47,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:47,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:47,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:47,101 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:25:47,101 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2584 states and 10199 transitions. cyclomatic complexity: 7803 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:47,246 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2584 states and 10199 transitions. cyclomatic complexity: 7803. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 6486 states and 27354 transitions. Complement of second has 6 states. [2025-04-26 16:25:47,246 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:25:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:47,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-04-26 16:25:47,247 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 16:25:47,247 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:47,247 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 7 letters. Loop has 4 letters. [2025-04-26 16:25:47,247 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:47,248 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 3 letters. Loop has 8 letters. [2025-04-26 16:25:47,248 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:47,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6486 states and 27354 transitions. [2025-04-26 16:25:47,355 INFO L131 ngComponentsAnalysis]: Automaton has 246 accepting balls. 2292 [2025-04-26 16:25:47,410 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6486 states to 5178 states and 22050 transitions. [2025-04-26 16:25:47,411 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2410 [2025-04-26 16:25:47,420 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3209 [2025-04-26 16:25:47,420 INFO L74 IsDeterministic]: Start isDeterministic. Operand 5178 states and 22050 transitions. [2025-04-26 16:25:47,421 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:47,421 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5178 states and 22050 transitions. [2025-04-26 16:25:47,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5178 states and 22050 transitions. [2025-04-26 16:25:47,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5178 to 4382. [2025-04-26 16:25:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4382 states have (on average 4.224326791419443) internal successors, (in total 18511), 4381 states have internal predecessors, (18511), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:47,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 18511 transitions. [2025-04-26 16:25:47,542 INFO L240 hiAutomatonCegarLoop]: Abstraction has 4382 states and 18511 transitions. [2025-04-26 16:25:47,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:25:47,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:25:47,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:25:47,542 INFO L87 Difference]: Start difference. First operand 4382 states and 18511 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:47,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:25:47,696 INFO L93 Difference]: Finished difference Result 8155 states and 33711 transitions. [2025-04-26 16:25:47,697 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8155 states and 33711 transitions. [2025-04-26 16:25:47,766 INFO L131 ngComponentsAnalysis]: Automaton has 600 accepting balls. 4224 [2025-04-26 16:25:47,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8155 states to 7815 states and 31956 transitions. [2025-04-26 16:25:47,836 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4518 [2025-04-26 16:25:47,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4622 [2025-04-26 16:25:47,853 INFO L74 IsDeterministic]: Start isDeterministic. Operand 7815 states and 31956 transitions. [2025-04-26 16:25:47,853 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:47,853 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7815 states and 31956 transitions. [2025-04-26 16:25:47,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states and 31956 transitions. [2025-04-26 16:25:48,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 6603. [2025-04-26 16:25:48,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6603 states, 6603 states have (on average 4.228381038921702) internal successors, (in total 27920), 6602 states have internal predecessors, (27920), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6603 states to 6603 states and 27920 transitions. [2025-04-26 16:25:48,155 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6603 states and 27920 transitions. [2025-04-26 16:25:48,155 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:25:48,158 INFO L438 stractBuchiCegarLoop]: Abstraction has 6603 states and 27920 transitions. [2025-04-26 16:25:48,158 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:25:48,158 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6603 states and 27920 transitions. [2025-04-26 16:25:48,201 INFO L131 ngComponentsAnalysis]: Automaton has 415 accepting balls. 3220 [2025-04-26 16:25:48,201 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:48,201 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:48,201 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:25:48,201 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:25:48,202 INFO L752 eck$LassoCheckResult]: Stem: "[83] $Ultimate##0-->L16: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_f1_3 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[123] L16-->L33-1: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0]" "[114] L16-1-->L44: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[117] L17-->L59: Formula: (and (= 3 v_thread3Thread1of1ForFork1_thidvar2_2) (= 3 v_thread3Thread1of1ForFork1_thidvar0_2) (= 3 v_thread3Thread1of1ForFork1_thidvar1_2)) InVars {} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_2, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_2, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_thidvar0, thread3Thread1of1ForFork1_thidvar1, thread3Thread1of1ForFork1_thidvar2]" [2025-04-26 16:25:48,202 INFO L754 eck$LassoCheckResult]: Loop: "[101] L59-->L61: Formula: (< v_x3_1 v_z_5) InVars {x3=v_x3_1, z=v_z_5} OutVars{x3=v_x3_1, z=v_z_5} AuxVars[] AssignedVars[]" "[103] L61-->L61-1: Formula: (and (< 0 v_f3_6) (= v_f3_5 0)) InVars {f3=v_f3_6} OutVars{f3=v_f3_5} AuxVars[] AssignedVars[f3]" "[104] L61-1-->L67: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" "[105] L67-->L59: Formula: (= v_f4_1 1) InVars {} OutVars{f4=v_f4_1} AuxVars[] AssignedVars[f4]" [2025-04-26 16:25:48,202 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:48,202 INFO L85 PathProgramCache]: Analyzing trace with hash 3518028, now seen corresponding path program 1 times [2025-04-26 16:25:48,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:48,202 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571573342] [2025-04-26 16:25:48,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:48,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:48,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:48,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:48,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:48,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:48,208 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:48,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:48,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:48,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:48,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:48,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:48,219 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash 4034724, now seen corresponding path program 1 times [2025-04-26 16:25:48,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:48,219 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870497482] [2025-04-26 16:25:48,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:48,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:48,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:48,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:48,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:48,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:48,223 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:48,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:48,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:48,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:48,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:48,225 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:48,226 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1980572015, now seen corresponding path program 1 times [2025-04-26 16:25:48,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:48,226 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616130965] [2025-04-26 16:25:48,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:48,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:25:48,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:25:48,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:48,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:48,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:25:48,254 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616130965] [2025-04-26 16:25:48,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616130965] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:25:48,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:25:48,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:25:48,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874840561] [2025-04-26 16:25:48,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:25:48,282 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:48,282 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:48,282 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:48,282 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:48,282 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:48,282 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:48,282 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:48,282 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:48,282 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:25:48,282 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:48,282 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:48,283 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:48,285 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:48,288 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:48,321 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:48,321 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:48,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:48,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:48,323 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:48,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:25:48,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:48,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:48,338 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:25:48,338 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f4=1} Honda state: {f4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:25:48,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:48,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:48,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:48,346 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:48,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:25:48,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:48,350 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:48,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 16:25:48,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:48,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:48,369 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:48,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:25:48,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:48,371 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:48,394 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:48,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:25:48,399 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:48,399 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:48,399 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:48,399 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:48,399 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:48,399 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:48,399 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:48,399 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:48,399 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:25:48,399 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:48,399 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:48,400 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:48,403 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:48,407 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:48,439 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:48,439 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:48,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:48,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:48,442 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:48,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:25:48,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:48,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:48,458 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:48,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:48,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:48,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:48,460 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:48,460 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:48,462 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:25:48,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:48,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:48,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:48,472 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:48,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 16:25:48,474 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:48,484 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:48,484 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:48,484 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:48,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:48,485 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:48,486 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:48,486 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:48,488 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:48,493 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:25:48,494 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:48,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:48,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:48,498 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:48,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 16:25:48,549 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:48,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:48,556 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:48,556 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:48,556 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(f3) = 1*f3 Supporting invariants [] [2025-04-26 16:25:48,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:48,569 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:48,580 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:48,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:48,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:48,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:48,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:48,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:48,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:48,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:48,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:48,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:48,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:48,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:48,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:48,615 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:25:48,616 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6603 states and 27920 transitions. cyclomatic complexity: 21944 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:48,934 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6603 states and 27920 transitions. cyclomatic complexity: 21944. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 22947 states and 96339 transitions. Complement of second has 5 states. [2025-04-26 16:25:48,935 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-04-26 16:25:48,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:48,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2025-04-26 16:25:48,936 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 16:25:48,936 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:48,936 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 8 letters. Loop has 4 letters. [2025-04-26 16:25:48,936 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:48,936 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 4 letters. Loop has 8 letters. [2025-04-26 16:25:48,936 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:48,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22947 states and 96339 transitions. [2025-04-26 16:25:49,256 INFO L131 ngComponentsAnalysis]: Automaton has 668 accepting balls. 5240 [2025-04-26 16:25:49,479 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22947 states to 19383 states and 82285 transitions. [2025-04-26 16:25:49,479 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6675 [2025-04-26 16:25:49,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8019 [2025-04-26 16:25:49,509 INFO L74 IsDeterministic]: Start isDeterministic. Operand 19383 states and 82285 transitions. [2025-04-26 16:25:49,509 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:49,509 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19383 states and 82285 transitions. [2025-04-26 16:25:49,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19383 states and 82285 transitions. [2025-04-26 16:25:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19383 to 16607. [2025-04-26 16:25:50,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16607 states, 16607 states have (on average 4.316071536099235) internal successors, (in total 71677), 16606 states have internal predecessors, (71677), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:50,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16607 states to 16607 states and 71677 transitions. [2025-04-26 16:25:50,241 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16607 states and 71677 transitions. [2025-04-26 16:25:50,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:25:50,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:25:50,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:25:50,242 INFO L87 Difference]: Start difference. First operand 16607 states and 71677 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:50,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:25:50,466 INFO L93 Difference]: Finished difference Result 27131 states and 112702 transitions. [2025-04-26 16:25:50,467 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27131 states and 112702 transitions. [2025-04-26 16:25:50,805 INFO L131 ngComponentsAnalysis]: Automaton has 830 accepting balls. 6344 [2025-04-26 16:25:51,078 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27131 states to 17142 states and 70747 transitions. [2025-04-26 16:25:51,079 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7682 [2025-04-26 16:25:51,101 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8086 [2025-04-26 16:25:51,101 INFO L74 IsDeterministic]: Start isDeterministic. Operand 17142 states and 70747 transitions. [2025-04-26 16:25:51,101 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:51,101 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17142 states and 70747 transitions. [2025-04-26 16:25:51,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17142 states and 70747 transitions. [2025-04-26 16:25:51,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17142 to 9932. [2025-04-26 16:25:51,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9932 states, 9932 states have (on average 4.152033830044301) internal successors, (in total 41238), 9931 states have internal predecessors, (41238), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:51,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9932 states to 9932 states and 41238 transitions. [2025-04-26 16:25:51,543 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9932 states and 41238 transitions. [2025-04-26 16:25:51,544 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:25:51,544 INFO L438 stractBuchiCegarLoop]: Abstraction has 9932 states and 41238 transitions. [2025-04-26 16:25:51,544 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:25:51,545 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9932 states and 41238 transitions. [2025-04-26 16:25:51,592 INFO L131 ngComponentsAnalysis]: Automaton has 461 accepting balls. 3524 [2025-04-26 16:25:51,593 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:51,593 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:51,593 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 16:25:51,593 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:25:51,594 INFO L752 eck$LassoCheckResult]: Stem: "[83] $Ultimate##0-->L16: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_f1_3 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[123] L16-->L33-1: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0]" "[114] L16-1-->L44: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[117] L17-->L59: Formula: (and (= 3 v_thread3Thread1of1ForFork1_thidvar2_2) (= 3 v_thread3Thread1of1ForFork1_thidvar0_2) (= 3 v_thread3Thread1of1ForFork1_thidvar1_2)) InVars {} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_2, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_2, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_thidvar0, thread3Thread1of1ForFork1_thidvar1, thread3Thread1of1ForFork1_thidvar2]" "[120] L18-->L74: Formula: (and (= 4 v_thread4Thread1of1ForFork2_thidvar2_2) (= 4 v_thread4Thread1of1ForFork2_thidvar3_2) (= 4 v_thread4Thread1of1ForFork2_thidvar1_2) (= 4 v_thread4Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread4Thread1of1ForFork2_thidvar3=v_thread4Thread1of1ForFork2_thidvar3_2, thread4Thread1of1ForFork2_thidvar0=v_thread4Thread1of1ForFork2_thidvar0_2, thread4Thread1of1ForFork2_thidvar2=v_thread4Thread1of1ForFork2_thidvar2_2, thread4Thread1of1ForFork2_thidvar1=v_thread4Thread1of1ForFork2_thidvar1_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork2_thidvar3, thread4Thread1of1ForFork2_thidvar0, thread4Thread1of1ForFork2_thidvar2, thread4Thread1of1ForFork2_thidvar1]" "[88] L33-1-->thread1FINAL: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" [2025-04-26 16:25:51,594 INFO L754 eck$LassoCheckResult]: Loop: "[107] L74-->L76: Formula: (< v_x4_3 v_z_8) InVars {x4=v_x4_3, z=v_z_8} OutVars{x4=v_x4_3, z=v_z_8} AuxVars[] AssignedVars[]" "[109] L76-->L76-1: Formula: (and (< 0 v_f4_6) (= v_f4_5 0)) InVars {f4=v_f4_6} OutVars{f4=v_f4_5} AuxVars[] AssignedVars[f4]" "[110] L76-1-->L82: Formula: (= v_x4_4 (+ v_x4_5 1)) InVars {x4=v_x4_5} OutVars{x4=v_x4_4} AuxVars[] AssignedVars[x4]" "[111] L82-->L74: Formula: (= v_f1_4 1) InVars {} OutVars{f1=v_f1_4} AuxVars[] AssignedVars[f1]" [2025-04-26 16:25:51,594 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:51,594 INFO L85 PathProgramCache]: Analyzing trace with hash -914138580, now seen corresponding path program 1 times [2025-04-26 16:25:51,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:51,594 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222509221] [2025-04-26 16:25:51,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:51,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:51,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:25:51,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:25:51,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:51,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:51,602 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:51,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:25:51,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:25:51,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:51,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:51,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:51,613 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash 4219428, now seen corresponding path program 1 times [2025-04-26 16:25:51,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:51,613 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853090459] [2025-04-26 16:25:51,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:51,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:51,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:51,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:51,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:51,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:51,617 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:51,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:51,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:51,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:51,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:51,619 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:51,619 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:51,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1189392079, now seen corresponding path program 1 times [2025-04-26 16:25:51,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:51,619 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131391322] [2025-04-26 16:25:51,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:51,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:51,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:25:51,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:25:51,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:51,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:51,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:25:51,647 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131391322] [2025-04-26 16:25:51,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131391322] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:25:51,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:25:51,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:25:51,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290507045] [2025-04-26 16:25:51,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:25:51,671 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:51,671 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:51,671 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:51,671 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:51,671 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:51,672 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:51,672 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:51,672 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:51,672 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:25:51,672 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:51,672 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:51,672 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:51,675 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:51,680 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:51,710 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:51,710 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:51,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:51,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:51,717 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:51,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 16:25:51,719 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:51,719 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:51,732 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:25:51,732 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f1=1} Honda state: {f1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:25:51,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-04-26 16:25:51,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:51,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:51,741 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:51,742 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 [2025-04-26 16:25:51,744 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:51,744 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:51,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:51,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:51,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:51,763 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) [2025-04-26 16:25:51,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-04-26 16:25:51,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:51,766 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:51,834 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:51,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:51,839 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:51,839 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:51,839 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:51,839 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:51,839 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:51,839 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:51,839 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:51,839 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:51,839 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:25:51,839 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:51,839 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:51,840 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:51,844 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:51,854 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:51,883 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:51,883 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:51,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:51,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:51,885 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:51,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 16:25:51,888 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:51,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:51,898 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:51,898 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:51,898 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:51,898 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:51,899 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:51,899 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:51,900 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:25:51,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-04-26 16:25:51,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:51,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:51,908 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:51,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 16:25:51,911 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:51,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:51,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:51,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:51,922 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:51,922 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:51,922 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:51,922 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:51,924 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:51,926 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:25:51,926 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:25:51,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:51,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:51,928 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:51,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 16:25:51,930 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:51,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-04-26 16:25:51,933 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:51,933 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:51,933 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-04-26 16:25:51,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:51,939 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:51,957 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:51,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:25:51,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:25:51,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:51,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:51,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:51,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:51,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:51,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:51,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:51,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:51,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:51,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:52,022 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:25:52,022 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9932 states and 41238 transitions. cyclomatic complexity: 32082 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (in total 10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:52,210 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9932 states and 41238 transitions. cyclomatic complexity: 32082. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (in total 10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 17413 states and 72758 transitions. Complement of second has 6 states. [2025-04-26 16:25:52,214 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:25:52,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (in total 10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2025-04-26 16:25:52,215 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 90 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 16:25:52,215 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:52,215 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 90 transitions. Stem has 10 letters. Loop has 4 letters. [2025-04-26 16:25:52,215 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:52,215 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 90 transitions. Stem has 6 letters. Loop has 8 letters. [2025-04-26 16:25:52,215 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:52,215 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17413 states and 72758 transitions. [2025-04-26 16:25:52,479 INFO L131 ngComponentsAnalysis]: Automaton has 180 accepting balls. 2400 [2025-04-26 16:25:52,534 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17413 states to 7630 states and 30972 transitions. [2025-04-26 16:25:52,534 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3136 [2025-04-26 16:25:52,540 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3136 [2025-04-26 16:25:52,540 INFO L74 IsDeterministic]: Start isDeterministic. Operand 7630 states and 30972 transitions. [2025-04-26 16:25:52,540 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:52,540 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7630 states and 30972 transitions. [2025-04-26 16:25:52,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7630 states and 30972 transitions. [2025-04-26 16:25:52,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7630 to 7630. [2025-04-26 16:25:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7630 states, 7630 states have (on average 4.059239842726082) internal successors, (in total 30972), 7629 states have internal predecessors, (30972), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:52,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7630 states to 7630 states and 30972 transitions. [2025-04-26 16:25:52,682 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7630 states and 30972 transitions. [2025-04-26 16:25:52,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:25:52,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:25:52,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:25:52,682 INFO L87 Difference]: Start difference. First operand 7630 states and 30972 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (in total 10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:52,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:25:52,697 INFO L93 Difference]: Finished difference Result 715 states and 1933 transitions. [2025-04-26 16:25:52,697 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 715 states and 1933 transitions. [2025-04-26 16:25:52,700 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:25:52,700 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 715 states to 0 states and 0 transitions. [2025-04-26 16:25:52,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:25:52,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:25:52,700 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:25:52,700 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:25:52,700 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:25:52,700 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:25:52,700 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:25:52,701 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:25:52,701 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:25:52,701 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:25:52,701 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:25:52,701 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:25:52,706 INFO L201 PluginConnector]: Adding new model interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:25:52 BoogieIcfgContainer [2025-04-26 16:25:52,706 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:25:52,707 INFO L158 Benchmark]: Toolchain (without parser) took 8699.08ms. Allocated memory was 159.4MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 87.7MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 645.5MB. Max. memory is 8.0GB. [2025-04-26 16:25:52,707 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:25:52,707 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.24ms. Allocated memory is still 159.4MB. Free memory was 87.7MB in the beginning and 85.8MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:25:52,707 INFO L158 Benchmark]: Boogie Preprocessor took 27.93ms. Allocated memory is still 159.4MB. Free memory was 85.8MB in the beginning and 84.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:25:52,707 INFO L158 Benchmark]: RCFGBuilder took 209.57ms. Allocated memory is still 159.4MB. Free memory was 84.7MB in the beginning and 74.6MB in the end (delta: 10.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-26 16:25:52,708 INFO L158 Benchmark]: BuchiAutomizer took 8421.15ms. Allocated memory was 159.4MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 74.5MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 628.7MB. Max. memory is 8.0GB. [2025-04-26 16:25:52,708 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 0.18ms. Allocated memory is still 159.4MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.24ms. Allocated memory is still 159.4MB. Free memory was 87.7MB in the beginning and 85.8MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.93ms. Allocated memory is still 159.4MB. Free memory was 85.8MB in the beginning and 84.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 209.57ms. Allocated memory is still 159.4MB. Free memory was 84.7MB in the beginning and 74.6MB in the end (delta: 10.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 8421.15ms. Allocated memory was 159.4MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 74.5MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 628.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.3s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.1s. Büchi inclusion checks took 3.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 2.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 14932 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 2.1s Buchi closure took 0.1s. 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, 290 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 286 mSDsluCounter, 349 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 261 IncrementalHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 192 mSDtfsCounter, 261 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 73ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (4 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function f1 and consists of 3 locations. One deterministic module has affine ranking function z + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function f3 and consists of 3 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 4 locations. 4 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:25:52,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...