/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/interleaved5.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:25:49,665 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:25:49,710 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:25:49,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:25:49,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:25:49,740 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:25:49,740 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:25:49,740 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:25:49,740 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:25:49,741 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:25:49,741 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:25:49,741 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:25:49,741 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:25:49,741 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:25:49,741 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:25:49,741 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:25:49,741 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:25:49,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:25:49,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:25:49,741 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:25:49,741 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:25:49,741 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:25:49,743 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:25:49,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:25:49,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:25:49,743 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:25:49,743 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:25:49,743 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:25:49,743 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:25:49,743 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:25:49,744 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:25:49,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:25:49,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:25:49,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:25:49,744 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:25:49,744 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:25:49,744 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:25:49,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:25:49,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:25:49,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:25:49,978 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:25:49,979 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:25:49,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/interleaved5.c.bpl [2025-04-26 16:25:49,981 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/interleaved5.c.bpl' [2025-04-26 16:25:49,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:25:49,998 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:25:49,999 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:25:49,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:25:49,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:25:50,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:49" (1/1) ... [2025-04-26 16:25:50,034 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:49" (1/1) ... [2025-04-26 16:25:50,038 INFO L138 Inliner]: procedures = 6, calls = 5, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:25:50,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:25:50,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:25:50,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:25:50,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:25:50,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:49" (1/1) ... [2025-04-26 16:25:50,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:49" (1/1) ... [2025-04-26 16:25:50,046 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:49" (1/1) ... [2025-04-26 16:25:50,046 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:49" (1/1) ... [2025-04-26 16:25:50,048 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:49" (1/1) ... [2025-04-26 16:25:50,049 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:49" (1/1) ... [2025-04-26 16:25:50,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:49" (1/1) ... [2025-04-26 16:25:50,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:49" (1/1) ... [2025-04-26 16:25:50,053 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:49" (1/1) ... [2025-04-26 16:25:50,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:25:50,060 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:25:50,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:25:50,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:25:50,061 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:49" (1/1) ... [2025-04-26 16:25:50,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:50,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:50,088 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 16:25:50,090 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 16:25:50,111 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:25:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:25:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:25:50,111 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:25:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:25:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:25:50,111 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:25:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:25:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:25:50,111 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:25:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:25:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:25:50,111 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:25:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:25:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:25:50,112 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 16:25:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 16:25:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 16:25:50,112 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 16:25:50,149 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:25:50,150 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:25:50,263 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:25:50,263 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:25:50,286 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:25:50,287 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:25:50,288 INFO L201 PluginConnector]: Adding new model interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:25:50 BoogieIcfgContainer [2025-04-26 16:25:50,288 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:25:50,290 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:25:50,290 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:25:50,294 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:25:50,295 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:25:50,295 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:49" (1/2) ... [2025-04-26 16:25:50,297 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@28215ac2 and model type interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:25:50, skipping insertion in model container [2025-04-26 16:25:50,297 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:25:50,297 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "interleaved5.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:25:50" (2/2) ... [2025-04-26 16:25:50,298 INFO L376 chiAutomizerObserver]: Analyzing ICFG interleaved5.c.bpl [2025-04-26 16:25:50,366 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2025-04-26 16:25:50,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 52 transitions, 139 flow [2025-04-26 16:25:50,432 INFO L116 PetriNetUnfolderBase]: 5/42 cut-off events. [2025-04-26 16:25:50,434 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-26 16:25:50,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 42 events. 5/42 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 102 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2025-04-26 16:25:50,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 52 transitions, 139 flow [2025-04-26 16:25:50,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 42 transitions, 114 flow [2025-04-26 16:25:50,442 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 53 places, 42 transitions, 114 flow [2025-04-26 16:25:50,451 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:25:50,451 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:25:50,451 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:25:50,451 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:25:50,451 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:25:50,451 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:25:50,451 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:25:50,451 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:25:50,452 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:25:51,407 INFO L131 ngComponentsAnalysis]: Automaton has 391 accepting balls. 10792 [2025-04-26 16:25:51,408 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:51,409 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:51,413 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:25:51,413 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:25:51,413 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:25:51,413 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 10887 states, but on-demand construction may add more states [2025-04-26 16:25:51,668 INFO L131 ngComponentsAnalysis]: Automaton has 391 accepting balls. 10792 [2025-04-26 16:25:51,668 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:51,669 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:51,669 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:25:51,670 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:25:51,674 INFO L752 eck$LassoCheckResult]: Stem: "[104] $Ultimate##0-->L18: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_x5_1 0) (= v_f1_3 0) (= v_f5_1 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f5=v_f5_1, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x5=v_x5_1, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f5=v_f5_1, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x5=v_x5_1, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[153] L18-->L37-1: Formula: (= v_thread1Thread1of1ForFork4_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork4_thidvar0=v_thread1Thread1of1ForFork4_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork4_thidvar0]" [2025-04-26 16:25:51,675 INFO L754 eck$LassoCheckResult]: Loop: "[110] L37-1-->L35: 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[]" "[112] L35-->L36: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[113] L36-->L37: Formula: (= v_f2_1 1) InVars {} OutVars{f2=v_f2_1} AuxVars[] AssignedVars[f2]" "[114] L37-->L37-1: 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 16:25:51,680 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:51,681 INFO L85 PathProgramCache]: Analyzing trace with hash 4338, now seen corresponding path program 1 times [2025-04-26 16:25:51,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:51,686 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057921388] [2025-04-26 16:25:51,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:51,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:51,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:51,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:51,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:51,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:51,746 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:51,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:51,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:51,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:51,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:51,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:51,771 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:51,772 INFO L85 PathProgramCache]: Analyzing trace with hash 4311780, now seen corresponding path program 1 times [2025-04-26 16:25:51,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:51,772 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430400972] [2025-04-26 16:25:51,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:51,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:51,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:51,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:51,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:51,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:51,782 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:51,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:51,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:51,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:51,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:51,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:51,792 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash -285344939, now seen corresponding path program 1 times [2025-04-26 16:25:51,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:51,792 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899473138] [2025-04-26 16:25:51,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:51,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:51,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:25:51,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:25:51,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:51,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:51,859 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 16:25:51,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:25:51,859 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899473138] [2025-04-26 16:25:51,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899473138] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:25:51,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:25:51,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-26 16:25:51,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076870910] [2025-04-26 16:25:51,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:25:51,936 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:51,937 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:51,937 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:51,937 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:51,937 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:51,937 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:51,937 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:51,937 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:51,937 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved5.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:25:51,937 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:51,938 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:51,972 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:51,981 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:51,992 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:52,049 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:52,051 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:52,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:52,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:52,060 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 16:25:52,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:52,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:52,077 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 16:25:52,098 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:25:52,098 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f2=1} Honda state: {f2=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:25:52,107 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 16:25:52,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:52,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:52,110 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 16:25:52,110 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 16:25:52,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:52,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:52,154 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 16:25:52,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:52,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:52,160 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 16:25:52,162 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 16:25:52,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:52,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:52,246 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:52,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 16:25:52,252 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:52,252 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:52,252 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:52,252 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:52,252 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:52,252 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:52,252 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:52,252 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:52,252 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved5.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:25:52,252 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:52,252 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:52,253 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:52,264 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:52,271 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:52,307 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:52,311 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:52,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:52,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:52,314 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 16:25:52,316 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 16:25:52,318 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 16:25:52,330 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:52,330 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:52,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:52,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:52,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:52,334 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:52,334 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:52,337 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:52,340 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:25:52,341 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:52,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:52,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:52,345 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 16:25:52,348 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 16:25:52,349 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:52,352 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:25:52,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 16:25:52,353 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:52,354 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:52,354 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-04-26 16:25:52,360 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 16:25:52,365 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:52,392 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:52,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:52,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:52,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:52,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:52,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:52,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:52,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:52,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:52,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:52,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:52,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:52,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:52,466 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 16:25:52,489 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 16:25:52,493 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 10887 states, but on-demand construction may add more states Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:53,173 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 10887 states, but on-demand construction may add more states. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 26439 states and 136969 transitions. Complement of second has 6 states. [2025-04-26 16:25:53,177 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 16:25:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:53,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-04-26 16:25:53,188 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 101 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:25:53,189 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:53,189 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 101 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 16:25:53,189 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:53,189 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 101 transitions. Stem has 2 letters. Loop has 8 letters. [2025-04-26 16:25:53,189 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:53,190 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26439 states and 136969 transitions. [2025-04-26 16:25:53,807 INFO L131 ngComponentsAnalysis]: Automaton has 630 accepting balls. 10668 [2025-04-26 16:25:54,388 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26439 states to 21533 states and 112820 transitions. [2025-04-26 16:25:54,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10759 [2025-04-26 16:25:54,452 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13839 [2025-04-26 16:25:54,452 INFO L74 IsDeterministic]: Start isDeterministic. Operand 21533 states and 112820 transitions. [2025-04-26 16:25:54,453 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:54,453 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21533 states and 112820 transitions. [2025-04-26 16:25:54,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21533 states and 112820 transitions. [2025-04-26 16:25:55,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21533 to 18454. [2025-04-26 16:25:55,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18454 states, 18454 states have (on average 5.284924677576677) internal successors, (in total 97528), 18453 states have internal predecessors, (97528), 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 16:25:55,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18454 states to 18454 states and 97528 transitions. [2025-04-26 16:25:55,424 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18454 states and 97528 transitions. [2025-04-26 16:25:55,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:25:55,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:25:55,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:25:55,426 INFO L87 Difference]: Start difference. First operand 18454 states and 97528 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 16:25:56,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:25:56,228 INFO L93 Difference]: Finished difference Result 34056 states and 177301 transitions. [2025-04-26 16:25:56,228 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34056 states and 177301 transitions. [2025-04-26 16:25:57,176 INFO L131 ngComponentsAnalysis]: Automaton has 1464 accepting balls. 19620 [2025-04-26 16:25:57,651 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34056 states to 33224 states and 171477 transitions. [2025-04-26 16:25:57,651 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19963 [2025-04-26 16:25:57,721 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20379 [2025-04-26 16:25:57,722 INFO L74 IsDeterministic]: Start isDeterministic. Operand 33224 states and 171477 transitions. [2025-04-26 16:25:57,722 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:57,722 INFO L218 hiAutomatonCegarLoop]: Abstraction has 33224 states and 171477 transitions. [2025-04-26 16:25:57,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33224 states and 171477 transitions. [2025-04-26 16:25:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33224 to 26164. [2025-04-26 16:25:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26164 states, 26164 states have (on average 5.2724736278856446) internal successors, (in total 137949), 26163 states have internal predecessors, (137949), 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 16:25:59,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26164 states to 26164 states and 137949 transitions. [2025-04-26 16:25:59,041 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26164 states and 137949 transitions. [2025-04-26 16:25:59,041 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:25:59,042 INFO L438 stractBuchiCegarLoop]: Abstraction has 26164 states and 137949 transitions. [2025-04-26 16:25:59,042 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:25:59,042 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26164 states and 137949 transitions. [2025-04-26 16:25:59,265 INFO L131 ngComponentsAnalysis]: Automaton has 858 accepting balls. 13164 [2025-04-26 16:25:59,265 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:59,265 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:59,266 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:25:59,266 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:25:59,266 INFO L752 eck$LassoCheckResult]: Stem: "[104] $Ultimate##0-->L18: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_x5_1 0) (= v_f1_3 0) (= v_f5_1 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f5=v_f5_1, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x5=v_x5_1, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f5=v_f5_1, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x5=v_x5_1, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[153] L18-->L37-1: Formula: (= v_thread1Thread1of1ForFork4_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork4_thidvar0=v_thread1Thread1of1ForFork4_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork4_thidvar0]" "[141] L18-1-->L48: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" [2025-04-26 16:25:59,266 INFO L754 eck$LassoCheckResult]: Loop: "[116] L48-->L50: 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[]" "[118] L50-->L50-1: Formula: (and (< 0 v_f2_6) (= v_f2_5 0)) InVars {f2=v_f2_6} OutVars{f2=v_f2_5} AuxVars[] AssignedVars[f2]" "[119] L50-1-->L56: Formula: (= v_x2_3 (+ v_x2_4 1)) InVars {x2=v_x2_4} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[x2]" "[120] L56-->L48: Formula: (= v_f3_1 1) InVars {} OutVars{f3=v_f3_1} AuxVars[] AssignedVars[f3]" [2025-04-26 16:25:59,267 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:59,267 INFO L85 PathProgramCache]: Analyzing trace with hash 134619, now seen corresponding path program 1 times [2025-04-26 16:25:59,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:59,267 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083168647] [2025-04-26 16:25:59,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:59,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:59,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:59,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:59,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:59,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:59,272 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:59,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:59,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:59,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:59,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:59,277 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:59,277 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:59,277 INFO L85 PathProgramCache]: Analyzing trace with hash 4496484, now seen corresponding path program 1 times [2025-04-26 16:25:59,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:59,278 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252803562] [2025-04-26 16:25:59,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:59,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:59,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:59,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:59,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:59,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:59,281 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:59,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:59,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:59,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:59,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:59,284 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:59,284 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:59,285 INFO L85 PathProgramCache]: Analyzing trace with hash -227005122, now seen corresponding path program 1 times [2025-04-26 16:25:59,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:59,285 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413356668] [2025-04-26 16:25:59,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:59,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:59,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:25:59,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:25:59,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:59,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:59,303 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 16:25:59,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:25:59,303 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413356668] [2025-04-26 16:25:59,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413356668] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:25:59,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:25:59,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:25:59,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000820767] [2025-04-26 16:25:59,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:25:59,328 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:59,328 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:59,329 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:59,329 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:59,329 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:59,329 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:59,329 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:59,329 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:59,329 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved5.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:25:59,329 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:59,329 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:59,329 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:59,332 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:59,336 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:59,368 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:59,368 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:59,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:59,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:59,372 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 16:25:59,373 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 16:25:59,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:59,375 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:59,387 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:25:59,388 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f3=1} Honda state: {f3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:25:59,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:25:59,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:59,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:59,396 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 16:25:59,396 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 16:25:59,399 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:59,399 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:59,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:25:59,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:59,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:59,417 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 16:25:59,418 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 16:25:59,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:59,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:59,443 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:59,447 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 16:25:59,447 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:59,447 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:59,447 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:59,447 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:59,448 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:59,448 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:59,448 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:59,448 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:59,448 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved5.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:25:59,448 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:59,448 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:59,449 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:59,455 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:59,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:59,493 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:59,493 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:59,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:59,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:59,495 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 16:25:59,496 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 16:25:59,497 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 16:25:59,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:59,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:59,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:59,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:59,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:59,511 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:59,511 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:59,512 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:59,514 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:25:59,514 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:59,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:59,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:59,516 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 16:25:59,517 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 16:25:59,518 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:59,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 16:25:59,521 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:59,521 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:59,521 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(f2) = 1*f2 Supporting invariants [] [2025-04-26 16:25:59,526 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 16:25:59,527 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:59,539 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:59,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:59,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:59,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:59,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:59,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:59,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:59,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:59,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:59,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:59,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:59,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:59,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:59,599 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 16:25:59,600 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 16:25:59,600 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26164 states and 137949 transitions. cyclomatic complexity: 112998 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:00,970 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26164 states and 137949 transitions. cyclomatic complexity: 112998. 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 88220 states and 461985 transitions. Complement of second has 5 states. [2025-04-26 16:26:00,970 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 16:26:00,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2025-04-26 16:26:00,972 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 74 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 16:26:00,972 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:00,972 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 74 transitions. Stem has 7 letters. Loop has 4 letters. [2025-04-26 16:26:00,972 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:00,972 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 74 transitions. Stem has 3 letters. Loop has 8 letters. [2025-04-26 16:26:00,972 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:00,972 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88220 states and 461985 transitions. [2025-04-26 16:26:02,577 INFO L131 ngComponentsAnalysis]: Automaton has 2132 accepting balls. 24524 [2025-04-26 16:26:03,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88220 states to 77976 states and 412785 transitions. [2025-04-26 16:26:03,737 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27418 [2025-04-26 16:26:04,051 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32300 [2025-04-26 16:26:04,051 INFO L74 IsDeterministic]: Start isDeterministic. Operand 77976 states and 412785 transitions. [2025-04-26 16:26:04,051 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:04,052 INFO L218 hiAutomatonCegarLoop]: Abstraction has 77976 states and 412785 transitions. [2025-04-26 16:26:04,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77976 states and 412785 transitions. [2025-04-26 16:26:05,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77976 to 65258. [2025-04-26 16:26:06,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65258 states, 65258 states have (on average 5.406325661221612) internal successors, (in total 352806), 65257 states have internal predecessors, (352806), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:06,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65258 states to 65258 states and 352806 transitions. [2025-04-26 16:26:06,831 INFO L240 hiAutomatonCegarLoop]: Abstraction has 65258 states and 352806 transitions. [2025-04-26 16:26:06,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:26:06,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:26:06,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:26:06,832 INFO L87 Difference]: Start difference. First operand 65258 states and 352806 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 16:26:08,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:26:08,233 INFO L93 Difference]: Finished difference Result 103429 states and 540192 transitions. [2025-04-26 16:26:08,233 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103429 states and 540192 transitions. [2025-04-26 16:26:10,380 INFO L131 ngComponentsAnalysis]: Automaton has 3740 accepting balls. 34904 [2025-04-26 16:26:11,565 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103429 states to 83472 states and 430909 transitions. [2025-04-26 16:26:11,565 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36925 [2025-04-26 16:26:11,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38840 [2025-04-26 16:26:11,715 INFO L74 IsDeterministic]: Start isDeterministic. Operand 83472 states and 430909 transitions. [2025-04-26 16:26:11,715 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:11,715 INFO L218 hiAutomatonCegarLoop]: Abstraction has 83472 states and 430909 transitions. [2025-04-26 16:26:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83472 states and 430909 transitions. [2025-04-26 16:26:13,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83472 to 48614. [2025-04-26 16:26:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48614 states, 48614 states have (on average 5.197823672193195) internal successors, (in total 252687), 48613 states have internal predecessors, (252687), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48614 states to 48614 states and 252687 transitions. [2025-04-26 16:26:13,988 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48614 states and 252687 transitions. [2025-04-26 16:26:13,988 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:26:13,989 INFO L438 stractBuchiCegarLoop]: Abstraction has 48614 states and 252687 transitions. [2025-04-26 16:26:13,989 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:26:13,989 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48614 states and 252687 transitions. [2025-04-26 16:26:14,393 INFO L131 ngComponentsAnalysis]: Automaton has 2123 accepting balls. 19652 [2025-04-26 16:26:14,394 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:14,394 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:14,395 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:26:14,396 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:26:14,396 INFO L752 eck$LassoCheckResult]: Stem: "[104] $Ultimate##0-->L18: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_x5_1 0) (= v_f1_3 0) (= v_f5_1 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f5=v_f5_1, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x5=v_x5_1, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f5=v_f5_1, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x5=v_x5_1, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[153] L18-->L37-1: Formula: (= v_thread1Thread1of1ForFork4_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork4_thidvar0=v_thread1Thread1of1ForFork4_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork4_thidvar0]" "[141] L18-1-->L48: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[144] L19-->L63: Formula: (and (= 3 v_thread3Thread1of1ForFork1_thidvar2_2) (= 3 v_thread3Thread1of1ForFork1_thidvar0_2) (= 3 v_thread3Thread1of1ForFork1_thidvar1_2)) InVars {} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_2, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_2, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_thidvar0, thread3Thread1of1ForFork1_thidvar1, thread3Thread1of1ForFork1_thidvar2]" [2025-04-26 16:26:14,396 INFO L754 eck$LassoCheckResult]: Loop: "[122] L63-->L65: 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[]" "[124] L65-->L65-1: Formula: (and (< 0 v_f3_6) (= v_f3_5 0)) InVars {f3=v_f3_6} OutVars{f3=v_f3_5} AuxVars[] AssignedVars[f3]" "[125] L65-1-->L71: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" "[126] L71-->L63: Formula: (= v_f4_1 1) InVars {} OutVars{f4=v_f4_1} AuxVars[] AssignedVars[f4]" [2025-04-26 16:26:14,397 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:14,397 INFO L85 PathProgramCache]: Analyzing trace with hash 4173333, now seen corresponding path program 1 times [2025-04-26 16:26:14,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:14,397 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614334654] [2025-04-26 16:26:14,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:14,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:14,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:14,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:14,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:14,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:14,410 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:14,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:14,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:14,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:14,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:14,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:14,418 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:14,418 INFO L85 PathProgramCache]: Analyzing trace with hash 4681188, now seen corresponding path program 1 times [2025-04-26 16:26:14,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:14,418 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268813907] [2025-04-26 16:26:14,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:14,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:14,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:14,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:14,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:14,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:14,424 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:14,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:14,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:14,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:14,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:14,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:14,431 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:14,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1578758648, now seen corresponding path program 1 times [2025-04-26 16:26:14,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:14,431 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630490911] [2025-04-26 16:26:14,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:14,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:14,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:26:14,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:26:14,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:14,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:26:14,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:26:14,470 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630490911] [2025-04-26 16:26:14,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630490911] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:26:14,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:26:14,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:26:14,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446959099] [2025-04-26 16:26:14,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:26:14,495 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:14,496 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:14,496 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:14,496 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:14,496 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:14,496 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:14,496 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:14,496 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:14,496 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved5.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:26:14,496 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:14,496 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:14,497 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:14,502 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:14,506 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:14,534 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:14,534 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:14,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:14,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:14,536 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:14,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:26:14,542 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:14,542 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:14,553 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:26:14,553 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f4=1} Honda state: {f4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:26:14,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 16:26:14,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:14,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:14,560 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:14,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:26:14,562 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:14,562 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:14,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:26:14,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:14,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:14,581 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:14,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:26:14,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:14,583 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:14,606 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:14,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 16:26:14,610 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:14,610 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:14,610 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:14,610 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:14,610 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:14,610 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:14,610 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:14,610 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:14,610 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved5.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:26:14,610 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:14,610 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:14,611 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:14,614 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:14,618 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:14,649 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:14,649 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:14,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:14,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:14,652 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:14,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 16:26:14,654 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:26:14,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:14,664 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:14,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:14,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:14,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:14,665 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:14,665 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:14,666 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:26:14,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-04-26 16:26:14,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:14,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:14,674 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:14,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 16:26:14,676 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:26:14,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:14,687 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:14,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:14,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:14,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:14,689 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:14,689 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:14,690 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:14,695 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:14,695 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:26:14,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:14,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:14,697 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:14,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 16:26:14,698 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:14,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-04-26 16:26:14,701 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:14,701 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:14,701 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(f3) = 1*f3 Supporting invariants [] [2025-04-26 16:26:14,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-04-26 16:26:14,706 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:14,715 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:14,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:14,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:14,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:14,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:14,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:14,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:14,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:14,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:14,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:14,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:14,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:14,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:26:14,758 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 16:26:14,758 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48614 states and 252687 transitions. cyclomatic complexity: 207705 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:17,096 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48614 states and 252687 transitions. cyclomatic complexity: 207705. 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 159674 states and 844004 transitions. Complement of second has 5 states. [2025-04-26 16:26:17,097 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 16:26:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2025-04-26 16:26:17,097 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 80 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 16:26:17,098 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:17,098 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 80 transitions. Stem has 8 letters. Loop has 4 letters. [2025-04-26 16:26:17,098 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:17,098 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 80 transitions. Stem has 4 letters. Loop has 8 letters. [2025-04-26 16:26:17,098 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:17,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159674 states and 844004 transitions. [2025-04-26 16:26:20,409 INFO L131 ngComponentsAnalysis]: Automaton has 5003 accepting balls. 36008 [2025-04-26 16:26:22,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159674 states to 139940 states and 744516 transitions. [2025-04-26 16:26:22,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46429 [2025-04-26 16:26:22,806 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54287 [2025-04-26 16:26:22,806 INFO L74 IsDeterministic]: Start isDeterministic. Operand 139940 states and 744516 transitions. [2025-04-26 16:26:22,806 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:22,806 INFO L218 hiAutomatonCegarLoop]: Abstraction has 139940 states and 744516 transitions. [2025-04-26 16:26:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139940 states and 744516 transitions. [2025-04-26 16:26:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139940 to 120037. [2025-04-26 16:26:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120037 states, 120037 states have (on average 5.414847088814282) internal successors, (in total 649982), 120036 states have internal predecessors, (649982), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120037 states to 120037 states and 649982 transitions. [2025-04-26 16:26:27,603 INFO L240 hiAutomatonCegarLoop]: Abstraction has 120037 states and 649982 transitions. [2025-04-26 16:26:27,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:26:27,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:26:27,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:26:27,604 INFO L87 Difference]: Start difference. First operand 120037 states and 649982 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 16:26:30,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:26:30,038 INFO L93 Difference]: Finished difference Result 176541 states and 925251 transitions. [2025-04-26 16:26:30,038 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 176541 states and 925251 transitions. [2025-04-26 16:26:33,355 INFO L131 ngComponentsAnalysis]: Automaton has 8722 accepting balls. 50248 [2025-04-26 16:26:35,572 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 176541 states to 133048 states and 688546 transitions. [2025-04-26 16:26:35,572 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56699 [2025-04-26 16:26:36,072 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59639 [2025-04-26 16:26:36,073 INFO L74 IsDeterministic]: Start isDeterministic. Operand 133048 states and 688546 transitions. [2025-04-26 16:26:36,073 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:36,073 INFO L218 hiAutomatonCegarLoop]: Abstraction has 133048 states and 688546 transitions. [2025-04-26 16:26:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133048 states and 688546 transitions. [2025-04-26 16:26:38,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133048 to 79618. [2025-04-26 16:26:38,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79618 states, 79618 states have (on average 5.2016252606194575) internal successors, (in total 414143), 79617 states have internal predecessors, (414143), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:39,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79618 states to 79618 states and 414143 transitions. [2025-04-26 16:26:39,155 INFO L240 hiAutomatonCegarLoop]: Abstraction has 79618 states and 414143 transitions. [2025-04-26 16:26:39,155 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:26:39,157 INFO L438 stractBuchiCegarLoop]: Abstraction has 79618 states and 414143 transitions. [2025-04-26 16:26:39,157 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:26:39,157 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 79618 states and 414143 transitions. [2025-04-26 16:26:40,133 INFO L131 ngComponentsAnalysis]: Automaton has 4884 accepting balls. 28068 [2025-04-26 16:26:40,133 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:40,133 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:40,136 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:26:40,136 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:26:40,136 INFO L752 eck$LassoCheckResult]: Stem: "[104] $Ultimate##0-->L18: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_x5_1 0) (= v_f1_3 0) (= v_f5_1 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, f5=v_f5_1, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x5=v_x5_1, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f5=v_f5_1, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x5=v_x5_1, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[153] L18-->L37-1: Formula: (= v_thread1Thread1of1ForFork4_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork4_thidvar0=v_thread1Thread1of1ForFork4_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork4_thidvar0]" "[141] L18-1-->L48: 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]" "[144] L19-->L63: 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]" "[147] L20-->L78: 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]" [2025-04-26 16:26:40,137 INFO L754 eck$LassoCheckResult]: Loop: "[128] L78-->L80: 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[]" "[130] L80-->L80-1: Formula: (and (< 0 v_f4_6) (= v_f4_5 0)) InVars {f4=v_f4_6} OutVars{f4=v_f4_5} AuxVars[] AssignedVars[f4]" "[131] L80-1-->L86: Formula: (= v_x4_4 (+ v_x4_5 1)) InVars {x4=v_x4_5} OutVars{x4=v_x4_4} AuxVars[] AssignedVars[x4]" "[132] L86-->L78: Formula: (= v_f5_2 1) InVars {} OutVars{f5=v_f5_2} AuxVars[] AssignedVars[f5]" [2025-04-26 16:26:40,137 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash 129373470, now seen corresponding path program 1 times [2025-04-26 16:26:40,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:40,137 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927590305] [2025-04-26 16:26:40,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:40,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:40,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:40,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:40,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:40,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:40,142 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:40,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:40,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:40,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:40,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:40,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:40,145 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:40,145 INFO L85 PathProgramCache]: Analyzing trace with hash 4865892, now seen corresponding path program 1 times [2025-04-26 16:26:40,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:40,145 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534828650] [2025-04-26 16:26:40,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:40,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:40,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:40,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:40,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:40,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:40,149 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:40,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:40,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:40,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:40,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:40,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:40,151 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:40,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1720090113, now seen corresponding path program 1 times [2025-04-26 16:26:40,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:40,152 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097675935] [2025-04-26 16:26:40,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:40,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:40,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 16:26:40,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 16:26:40,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:40,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:26:40,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:26:40,176 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097675935] [2025-04-26 16:26:40,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097675935] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:26:40,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:26:40,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:26:40,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922194576] [2025-04-26 16:26:40,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:26:40,198 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:40,198 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:40,198 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:40,198 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:40,198 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:40,198 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:40,198 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:40,198 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:40,199 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved5.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:26:40,199 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:40,199 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:40,199 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:40,203 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:40,205 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:40,233 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:40,233 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:40,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:40,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:40,235 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:40,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 16:26:40,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:40,240 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:40,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-04-26 16:26:40,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:40,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:40,257 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:40,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-04-26 16:26:40,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:40,259 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:40,322 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:40,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:40,326 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:40,326 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:40,326 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:40,327 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:40,327 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:40,327 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:40,327 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:40,327 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:40,327 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved5.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:26:40,327 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:40,327 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:40,328 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:40,332 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:40,333 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:40,358 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:40,358 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:40,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:40,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:40,360 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:40,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 16:26:40,363 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:26:40,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:40,372 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:40,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:40,372 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:40,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:40,373 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:40,373 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:40,375 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:40,377 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:40,377 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:26:40,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:40,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:40,379 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:40,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 16:26:40,380 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:40,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-04-26 16:26:40,383 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:40,383 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:40,383 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-04-26 16:26:40,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:40,388 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:40,396 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:40,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:40,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:40,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:40,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:40,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:40,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:40,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:40,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:40,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:40,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:40,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:40,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:26:40,440 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:26:40,440 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79618 states and 414143 transitions. cyclomatic complexity: 342952 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 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)