/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 --buchiautomizer.automaton.type.for.concurrent.programs PARTIAL_ORDER_BA -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/indep_loops_7.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:49:13,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:49:13,751 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:49:13,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:49:13,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:49:13,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:49:13,770 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:49:13,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:49:13,770 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:49:13,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:49:13,770 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:49:13,770 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:49:13,770 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:49:13,770 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:49:13,770 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:49:13,770 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:49:13,770 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:49:13,771 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:49:13,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:49:13,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:49:13,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:49:13,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:49:13,772 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:49:13,772 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> PARTIAL_ORDER_BA [2025-02-17 22:49:13,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:49:13,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:49:13,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:49:13,992 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:49:13,993 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:49:13,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/indep_loops_7.c.bpl [2025-02-17 22:49:13,994 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/indep_loops_7.c.bpl' [2025-02-17 22:49:14,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:49:14,010 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:49:14,011 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:49:14,011 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:49:14,011 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:49:14,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:14" (1/1) ... [2025-02-17 22:49:14,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:14" (1/1) ... [2025-02-17 22:49:14,026 INFO L138 Inliner]: procedures = 8, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:49:14,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:49:14,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:49:14,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:49:14,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:49:14,033 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:14" (1/1) ... [2025-02-17 22:49:14,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:14" (1/1) ... [2025-02-17 22:49:14,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:14" (1/1) ... [2025-02-17 22:49:14,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:14" (1/1) ... [2025-02-17 22:49:14,035 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:14" (1/1) ... [2025-02-17 22:49:14,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:14" (1/1) ... [2025-02-17 22:49:14,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:14" (1/1) ... [2025-02-17 22:49:14,038 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:14" (1/1) ... [2025-02-17 22:49:14,039 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:14" (1/1) ... [2025-02-17 22:49:14,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:49:14,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:49:14,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:49:14,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:49:14,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:14" (1/1) ... [2025-02-17 22:49:14,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:14,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:14,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:14,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-17 22:49:14,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:49:14,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:49:14,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:49:14,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:49:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:49:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:49:14,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:49:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:49:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:49:14,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:49:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:49:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:49:14,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:49:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:49:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:49:14,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-02-17 22:49:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-02-17 22:49:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-02-17 22:49:14,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-02-17 22:49:14,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-02-17 22:49:14,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-02-17 22:49:14,087 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2025-02-17 22:49:14,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2025-02-17 22:49:14,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2025-02-17 22:49:14,088 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:49:14,124 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:49:14,125 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:49:14,208 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:49:14,208 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:49:14,221 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:49:14,221 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:49:14,222 INFO L201 PluginConnector]: Adding new model indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:49:14 BoogieIcfgContainer [2025-02-17 22:49:14,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:49:14,223 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:49:14,223 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:49:14,228 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:49:14,228 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:49:14,228 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:14" (1/2) ... [2025-02-17 22:49:14,229 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@618f7225 and model type indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:49:14, skipping insertion in model container [2025-02-17 22:49:14,229 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:49:14,229 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:49:14" (2/2) ... [2025-02-17 22:49:14,231 INFO L363 chiAutomizerObserver]: Analyzing ICFG indep_loops_7.c.bpl [2025-02-17 22:49:14,336 INFO L143 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2025-02-17 22:49:14,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 57 transitions, 163 flow [2025-02-17 22:49:14,419 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2025-02-17 22:49:14,421 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-17 22:49:14,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 43 events. 7/43 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2025-02-17 22:49:14,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 57 transitions, 163 flow [2025-02-17 22:49:14,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 43 transitions, 128 flow [2025-02-17 22:49:14,439 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:49:22,649 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:49:22,649 INFO L101 AmpleReduction]: Number of pruned transitions: 10450, Number of non-trivial ample sets: 91048 [2025-02-17 22:49:22,649 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 85905 [2025-02-17 22:49:22,683 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:49:22,683 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:49:22,683 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:49:22,683 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:49:22,683 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:49:22,683 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:49:22,683 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:49:22,683 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:49:22,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27307 states, 27306 states have (on average 6.484179301252472) internal successors, (177057), 27306 states have internal predecessors, (177057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:23,620 INFO L131 ngComponentsAnalysis]: Automaton has 3991 accepting balls. 26924 [2025-02-17 22:49:23,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:23,622 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:23,629 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:49:23,629 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:49:23,629 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:49:23,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27307 states, 27306 states have (on average 6.484179301252472) internal successors, (177057), 27306 states have internal predecessors, (177057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:24,531 INFO L131 ngComponentsAnalysis]: Automaton has 3991 accepting balls. 26924 [2025-02-17 22:49:24,531 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:24,531 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:24,533 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:49:24,533 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:49:24,537 INFO L752 eck$LassoCheckResult]: Stem: "[137] $Ultimate##0-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:49:24,538 INFO L754 eck$LassoCheckResult]: Loop: "[108] L32-->L34: 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[]" "[110] L34-->L32: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:49:24,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:24,541 INFO L85 PathProgramCache]: Analyzing trace with hash 168, now seen corresponding path program 1 times [2025-02-17 22:49:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:24,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333346705] [2025-02-17 22:49:24,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:24,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:24,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:49:24,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:49:24,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:24,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:24,591 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:24,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:49:24,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:49:24,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:24,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:24,606 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:24,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:24,609 INFO L85 PathProgramCache]: Analyzing trace with hash 4419, now seen corresponding path program 1 times [2025-02-17 22:49:24,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:24,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102828585] [2025-02-17 22:49:24,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:24,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:24,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:24,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:24,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:24,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:24,617 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:24,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:24,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:24,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:24,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:24,621 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:24,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:24,622 INFO L85 PathProgramCache]: Analyzing trace with hash 164906, now seen corresponding path program 1 times [2025-02-17 22:49:24,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:24,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905388052] [2025-02-17 22:49:24,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:24,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:24,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:24,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:24,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:24,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:24,631 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:24,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:24,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:24,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:24,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:24,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:24,663 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:24,664 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:24,664 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:24,664 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:24,664 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:24,664 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:24,664 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:24,664 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:24,664 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_7.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:49:24,664 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:24,665 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:24,673 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:24,719 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:24,719 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:24,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:24,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:24,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:24,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-17 22:49:24,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:24,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:24,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:49:24,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:24,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:24,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:24,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-17 22:49:24,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:24,837 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:24,932 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:24,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-02-17 22:49:24,937 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:24,937 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:24,937 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:24,937 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:24,937 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:24,937 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:24,937 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:24,937 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:24,937 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_7.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:49:24,938 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:24,938 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:24,939 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:24,963 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:24,966 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:24,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:24,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:24,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:24,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-17 22:49:24,977 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:49:25,000 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:25,000 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:25,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:25,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:25,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:25,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:25,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:25,019 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:25,027 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:49:25,027 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:49:25,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:25,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:25,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:25,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-17 22:49:25,034 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:25,034 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:25,034 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:25,035 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:49:25,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:25,043 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:25,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:25,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:49:25,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:49:25,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:25,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:25,102 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:25,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:25,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:25,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:25,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:25,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:25,129 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:25,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:49:25,195 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 [2025-02-17 22:49:25,273 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27307 states, 27306 states have (on average 6.484179301252472) internal successors, (177057), 27306 states have internal predecessors, (177057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:26,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-02-17 22:49:27,253 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27307 states, 27306 states have (on average 6.484179301252472) internal successors, (177057), 27306 states have internal predecessors, (177057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 76453 states and 542852 transitions. Complement of second has 6 states. [2025-02-17 22:49:27,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:49:27,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2025-02-17 22:49:27,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 1 letters. Loop has 2 letters. [2025-02-17 22:49:27,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:27,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:49:27,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:27,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 1 letters. Loop has 4 letters. [2025-02-17 22:49:27,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:27,265 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76453 states and 542852 transitions. [2025-02-17 22:49:29,523 INFO L131 ngComponentsAnalysis]: Automaton has 4801 accepting balls. 26612 [2025-02-17 22:49:31,008 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76453 states to 59295 states and 430381 transitions. [2025-02-17 22:49:31,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26918 [2025-02-17 22:49:31,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43105 [2025-02-17 22:49:31,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59295 states and 430381 transitions. [2025-02-17 22:49:31,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:31,508 INFO L218 hiAutomatonCegarLoop]: Abstraction has 59295 states and 430381 transitions. [2025-02-17 22:49:31,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59295 states and 430381 transitions. [2025-02-17 22:49:34,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59295 to 43110. [2025-02-17 22:49:34,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43110 states, 43110 states have (on average 7.486105311992577) internal successors, (322726), 43109 states have internal predecessors, (322726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43110 states to 43110 states and 322726 transitions. [2025-02-17 22:49:35,251 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43110 states and 322726 transitions. [2025-02-17 22:49:35,251 INFO L432 stractBuchiCegarLoop]: Abstraction has 43110 states and 322726 transitions. [2025-02-17 22:49:35,252 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:49:35,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43110 states and 322726 transitions. [2025-02-17 22:49:35,853 INFO L131 ngComponentsAnalysis]: Automaton has 4801 accepting balls. 26612 [2025-02-17 22:49:35,853 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:35,854 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:35,856 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:49:35,856 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:49:35,857 INFO L752 eck$LassoCheckResult]: Stem: "[137] $Ultimate##0-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[140] L13-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:49:35,857 INFO L754 eck$LassoCheckResult]: Loop: "[112] L41-->L43: Formula: (< v_x2_1 v_z_3) InVars {x2=v_x2_1, z=v_z_3} OutVars{x2=v_x2_1, z=v_z_3} AuxVars[] AssignedVars[]" "[114] L43-->L41: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-02-17 22:49:35,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:35,857 INFO L85 PathProgramCache]: Analyzing trace with hash 5348, now seen corresponding path program 1 times [2025-02-17 22:49:35,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:35,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71543116] [2025-02-17 22:49:35,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:35,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:35,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:35,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:35,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:35,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:35,862 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:35,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:35,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:35,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:35,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:35,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:35,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:35,865 INFO L85 PathProgramCache]: Analyzing trace with hash 4547, now seen corresponding path program 1 times [2025-02-17 22:49:35,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:35,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813771845] [2025-02-17 22:49:35,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:35,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:35,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:35,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:35,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:35,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:35,868 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:35,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:35,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:35,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:35,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:35,871 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:35,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash 5143014, now seen corresponding path program 1 times [2025-02-17 22:49:35,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:35,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898784550] [2025-02-17 22:49:35,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:35,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:35,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:35,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:35,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:35,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:35,875 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:35,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:35,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:35,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:35,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:35,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:35,902 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:35,902 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:35,902 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:35,902 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:35,902 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:35,903 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:35,903 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:35,903 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:35,903 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_7.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:49:35,903 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:35,903 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:35,903 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:35,922 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:35,922 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:35,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:35,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:35,925 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:35,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-17 22:49:35,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:35,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:35,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-17 22:49:35,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:35,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:35,944 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:35,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-17 22:49:35,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:35,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:36,016 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:36,023 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 [2025-02-17 22:49:36,023 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:36,023 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:36,023 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:36,023 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:36,023 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:36,023 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:36,023 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:36,023 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:36,023 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_7.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:49:36,023 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:36,023 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:36,024 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:36,042 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:36,042 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:36,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:36,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:36,044 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:36,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-17 22:49:36,047 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:49:36,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:36,058 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:36,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:36,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:36,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:36,059 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:36,059 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:36,062 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:36,068 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:49:36,068 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:49:36,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:36,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:36,070 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:36,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-17 22:49:36,072 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:36,072 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:36,072 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:36,072 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-02-17 22:49:36,077 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 [2025-02-17 22:49:36,078 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:36,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:36,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:36,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:36,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:36,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:36,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:36,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:36,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:36,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:36,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:36,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:36,106 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:36,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:49:36,122 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 [2025-02-17 22:49:36,122 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43110 states and 322726 transitions. cyclomatic complexity: 285446 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:36,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-02-17 22:49:39,147 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43110 states and 322726 transitions. cyclomatic complexity: 285446. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 132027 states and 1022148 transitions. Complement of second has 6 states. [2025-02-17 22:49:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:49:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2025-02-17 22:49:39,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 107 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:49:39,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:39,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 107 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:49:39,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:39,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 107 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:49:39,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:39,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 132027 states and 1022148 transitions. [2025-02-17 22:49:43,218 INFO L131 ngComponentsAnalysis]: Automaton has 5588 accepting balls. 25044 [2025-02-17 22:49:45,810 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 132027 states to 100063 states and 782744 transitions. [2025-02-17 22:49:45,810 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35807 [2025-02-17 22:49:46,089 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54440 [2025-02-17 22:49:46,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 100063 states and 782744 transitions. [2025-02-17 22:49:46,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:46,089 INFO L218 hiAutomatonCegarLoop]: Abstraction has 100063 states and 782744 transitions. [2025-02-17 22:49:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100063 states and 782744 transitions. [2025-02-17 22:49:49,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100063 to 81430. [2025-02-17 22:49:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81430 states, 81430 states have (on average 8.153014859388431) internal successors, (663900), 81429 states have internal predecessors, (663900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81430 states to 81430 states and 663900 transitions. [2025-02-17 22:49:50,848 INFO L240 hiAutomatonCegarLoop]: Abstraction has 81430 states and 663900 transitions. [2025-02-17 22:49:50,848 INFO L432 stractBuchiCegarLoop]: Abstraction has 81430 states and 663900 transitions. [2025-02-17 22:49:50,848 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:49:50,848 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 81430 states and 663900 transitions. [2025-02-17 22:49:52,221 INFO L131 ngComponentsAnalysis]: Automaton has 5588 accepting balls. 25044 [2025-02-17 22:49:52,221 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:52,221 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:52,224 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:49:52,224 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:49:52,224 INFO L752 eck$LassoCheckResult]: Stem: "[137] $Ultimate##0-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[140] L13-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[143] L14-->L50: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:49:52,224 INFO L754 eck$LassoCheckResult]: Loop: "[116] L50-->L52: 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[]" "[118] L52-->L50: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:49:52,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash 165931, now seen corresponding path program 1 times [2025-02-17 22:49:52,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:52,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951262804] [2025-02-17 22:49:52,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:52,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:52,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:52,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:52,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:52,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:52,228 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:52,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:52,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:52,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:52,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:52,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:52,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:52,232 INFO L85 PathProgramCache]: Analyzing trace with hash 4675, now seen corresponding path program 1 times [2025-02-17 22:49:52,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:52,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835313151] [2025-02-17 22:49:52,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:52,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:52,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:52,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:52,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:52,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:52,236 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:52,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:52,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:52,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:52,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:52,239 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:52,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:52,239 INFO L85 PathProgramCache]: Analyzing trace with hash 159463405, now seen corresponding path program 1 times [2025-02-17 22:49:52,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:52,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293223341] [2025-02-17 22:49:52,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:52,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:52,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:49:52,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:49:52,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:52,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:52,246 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:52,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:49:52,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:49:52,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:52,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:52,255 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:52,270 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:52,270 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:52,270 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:52,270 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:52,270 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:52,270 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:52,270 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:52,270 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:52,270 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_7.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:49:52,270 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:52,270 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:52,271 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:52,293 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:52,293 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:52,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:52,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:52,296 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:52,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-17 22:49:52,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:52,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:52,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:52,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:52,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:52,448 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:52,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-17 22:49:52,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:52,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:52,530 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:52,537 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Exception during sending of exit command (exit): Broken pipe [2025-02-17 22:49:52,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-17 22:49:52,544 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:52,544 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:52,544 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:52,544 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:52,544 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:52,544 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:52,544 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:52,544 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:52,544 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_7.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:49:52,544 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:52,544 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:52,545 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:52,565 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:52,565 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:52,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:52,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:52,567 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:52,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-17 22:49:52,570 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:49:52,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:52,580 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:52,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:52,581 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:52,581 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:52,582 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:52,582 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:52,584 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:52,588 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:49:52,588 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:49:52,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:52,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:52,590 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:52,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-17 22:49:52,593 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:52,593 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:52,593 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:52,593 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:49:52,598 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 [2025-02-17 22:49:52,599 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:52,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:52,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:52,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:52,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:52,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:52,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:52,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:52,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:52,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:52,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:52,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:52,626 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:52,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:49:52,639 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 [2025-02-17 22:49:52,639 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 81430 states and 663900 transitions. cyclomatic complexity: 591258 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:53,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:58,581 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 81430 states and 663900 transitions. cyclomatic complexity: 591258. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 254440 states and 2113605 transitions. Complement of second has 6 states. [2025-02-17 22:49:58,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:49:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:58,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-02-17 22:49:58,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 111 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:49:58,583 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:58,583 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 111 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:49:58,583 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:58,583 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 111 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:49:58,583 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:58,583 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 254440 states and 2113605 transitions. [2025-02-17 22:50:06,579 INFO L131 ngComponentsAnalysis]: Automaton has 6530 accepting balls. 23434 [2025-02-17 22:50:11,759 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 254440 states to 187285 states and 1569776 transitions. [2025-02-17 22:50:11,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53684 [2025-02-17 22:50:12,230 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72258 [2025-02-17 22:50:12,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 187285 states and 1569776 transitions. [2025-02-17 22:50:12,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:50:12,230 INFO L218 hiAutomatonCegarLoop]: Abstraction has 187285 states and 1569776 transitions. [2025-02-17 22:50:12,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187285 states and 1569776 transitions. [2025-02-17 22:50:18,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187285 to 158523. [2025-02-17 22:50:19,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158523 states, 158523 states have (on average 8.671631245939075) internal successors, (1374653), 158522 states have internal predecessors, (1374653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:50:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158523 states to 158523 states and 1374653 transitions. [2025-02-17 22:50:22,153 INFO L240 hiAutomatonCegarLoop]: Abstraction has 158523 states and 1374653 transitions. [2025-02-17 22:50:22,153 INFO L432 stractBuchiCegarLoop]: Abstraction has 158523 states and 1374653 transitions. [2025-02-17 22:50:22,153 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:50:22,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 158523 states and 1374653 transitions.