/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/gemcutter/Termination.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/indep_loops_8.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:57:21,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:57:22,013 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:57:22,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:57:22,016 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:57:22,016 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:57:22,016 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:57:22,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:57:22,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:57:22,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:57:22,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:57:22,036 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:57:22,036 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:57:22,036 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:57:22,036 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:57:22,036 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:57:22,036 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:57:22,036 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:57:22,036 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:57:22,036 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:57:22,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:57:22,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:57:22,037 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:57:22,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:57:22,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:57:22,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:57:22,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:57:22,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:57:22,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:57:22,037 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:57:22,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:57:22,037 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:57:22,037 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:57:22,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:57:22,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:57:22,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:57:22,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:57:22,038 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:57:22,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:57:22,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:57:22,038 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:57:22,038 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:57:22,038 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:57:22,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:57:22,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:57:22,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:57:22,258 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:57:22,258 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:57:22,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/indep_loops_8.c.bpl [2025-04-26 16:57:22,259 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/indep_loops_8.c.bpl' [2025-04-26 16:57:22,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:57:22,282 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:57:22,283 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:57:22,283 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:57:22,283 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:57:22,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:57:22" (1/1) ... [2025-04-26 16:57:22,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:57:22" (1/1) ... [2025-04-26 16:57:22,317 INFO L138 Inliner]: procedures = 9, calls = 8, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:57:22,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:57:22,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:57:22,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:57:22,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:57:22,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:57:22" (1/1) ... [2025-04-26 16:57:22,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:57:22" (1/1) ... [2025-04-26 16:57:22,325 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:57:22" (1/1) ... [2025-04-26 16:57:22,325 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:57:22" (1/1) ... [2025-04-26 16:57:22,328 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:57:22" (1/1) ... [2025-04-26 16:57:22,329 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:57:22" (1/1) ... [2025-04-26 16:57:22,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:57:22" (1/1) ... [2025-04-26 16:57:22,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:57:22" (1/1) ... [2025-04-26 16:57:22,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:57:22" (1/1) ... [2025-04-26 16:57:22,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:57:22,348 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:57:22,348 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:57:22,348 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:57:22,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:57:22" (1/1) ... [2025-04-26 16:57:22,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:57:22,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:57:22,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 16:57:22,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 16:57:22,399 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:57:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:57:22,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:57:22,399 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:57:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:57:22,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:57:22,399 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:57:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:57:22,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:57:22,399 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:57:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:57:22,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:57:22,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:57:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:57:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:57:22,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 16:57:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 16:57:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 16:57:22,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-04-26 16:57:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-26 16:57:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-26 16:57:22,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2025-04-26 16:57:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2025-04-26 16:57:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2025-04-26 16:57:22,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2025-04-26 16:57:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2025-04-26 16:57:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2025-04-26 16:57:22,401 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 16:57:22,435 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:57:22,436 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:57:22,534 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:57:22,534 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:57:22,543 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:57:22,544 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:57:22,544 INFO L201 PluginConnector]: Adding new model indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:57:22 BoogieIcfgContainer [2025-04-26 16:57:22,544 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:57:22,546 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:57:22,546 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:57:22,550 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:57:22,550 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:57:22,550 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:57:22" (1/2) ... [2025-04-26 16:57:22,552 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@bb298e4 and model type indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:57:22, skipping insertion in model container [2025-04-26 16:57:22,552 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:57:22,552 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:57:22" (2/2) ... [2025-04-26 16:57:22,553 INFO L376 chiAutomizerObserver]: Analyzing ICFG indep_loops_8.c.bpl [2025-04-26 16:57:22,620 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-04-26 16:57:22,655 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:57:22,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:57:22,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:57:22,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 16:57:22,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 16:57:22,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 65 transitions, 186 flow [2025-04-26 16:57:22,749 INFO L116 PetriNetUnfolderBase]: 8/49 cut-off events. [2025-04-26 16:57:22,751 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-26 16:57:22,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 49 events. 8/49 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2025-04-26 16:57:22,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 65 transitions, 186 flow [2025-04-26 16:57:22,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 49 transitions, 146 flow [2025-04-26 16:57:22,765 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 66 places, 49 transitions, 146 flow [2025-04-26 16:57:22,770 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:57:35,829 WARN L140 AmpleReduction]: Number of pruned transitions: 349051 [2025-04-26 16:57:35,830 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 16:57:35,830 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 54222 [2025-04-26 16:57:35,830 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:41 [2025-04-26 16:57:35,830 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:54963 [2025-04-26 16:57:35,830 WARN L145 AmpleReduction]: Times succ was already a loop node:203890 [2025-04-26 16:57:35,830 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:39577 [2025-04-26 16:57:35,830 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:57:36,295 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 109227 states, 109226 states have (on average 4.671049017633164) internal successors, (in total 510200), 109226 states have internal predecessors, (510200), 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 16:57:36,302 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:57:36,302 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:57:36,302 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:57:36,302 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:57:36,302 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:57:36,302 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:57:36,302 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:57:36,302 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:57:36,543 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 109227 states, 109226 states have (on average 4.671049017633164) internal successors, (in total 510200), 109226 states have internal predecessors, (510200), 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 16:57:39,209 INFO L131 ngComponentsAnalysis]: Automaton has 12355 accepting balls. 108460 [2025-04-26 16:57:39,210 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:57:39,210 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:57:39,218 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:57:39,219 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:57:39,219 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:57:39,416 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 109227 states, 109226 states have (on average 4.671049017633164) internal successors, (in total 510200), 109226 states have internal predecessors, (510200), 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 16:57:41,290 INFO L131 ngComponentsAnalysis]: Automaton has 12355 accepting balls. 108460 [2025-04-26 16:57:41,291 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:57:41,291 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:57:41,296 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:57:41,296 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:57:41,299 INFO L752 eck$LassoCheckResult]: Stem: "[156] $Ultimate##0-->L38: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:57:41,299 INFO L754 eck$LassoCheckResult]: Loop: "[123] L38-->L40: 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[]" "[125] L40-->L38: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 16:57:41,303 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:57:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash 187, now seen corresponding path program 1 times [2025-04-26 16:57:41,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:57:41,307 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691607416] [2025-04-26 16:57:41,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:57:41,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:57:41,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:57:41,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:57:41,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:57:41,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:57:41,353 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:57:41,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:57:41,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:57:41,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:57:41,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:57:41,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:57:41,369 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:57:41,369 INFO L85 PathProgramCache]: Analyzing trace with hash 4899, now seen corresponding path program 1 times [2025-04-26 16:57:41,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:57:41,370 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988915017] [2025-04-26 16:57:41,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:57:41,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:57:41,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:57:41,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:57:41,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:57:41,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:57:41,381 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:57:41,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:57:41,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:57:41,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:57:41,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:57:41,387 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:57:41,388 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:57:41,388 INFO L85 PathProgramCache]: Analyzing trace with hash 183645, now seen corresponding path program 1 times [2025-04-26 16:57:41,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:57:41,388 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810462730] [2025-04-26 16:57:41,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:57:41,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:57:41,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:57:41,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:57:41,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:57:41,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:57:41,395 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:57:41,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:57:41,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:57:41,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:57:41,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:57:41,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:57:41,446 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:57:41,446 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:57:41,446 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:57:41,446 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:57:41,446 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:57:41,446 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:57:41,446 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:57:41,446 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:57:41,447 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:57:41,447 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:57:41,447 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:57:41,538 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:57:41,573 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:57:41,574 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:57:41,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:57:41,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:57:41,581 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 16:57:41,582 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 16:57:41,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:57:41,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:57:41,606 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 16:57:41,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:57:41,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:57:41,608 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 16:57:41,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:57:41,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:57:41,616 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 16:57:41,699 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:57:41,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:57:41,706 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:57:41,706 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:57:41,706 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:57:41,706 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:57:41,706 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:57:41,706 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:57:41,706 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:57:41,706 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:57:41,706 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:57:41,707 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:57:41,707 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:57:41,707 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:57:41,744 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:57:41,747 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:57:41,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:57:41,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:57:41,750 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 16:57:41,752 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 16:57:41,756 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 16:57:41,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:57:41,776 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:57:41,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:57:41,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:57:41,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:57:41,786 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:57:41,787 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:57:41,794 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:57:41,803 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:57:41,803 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:57:41,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:57:41,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:57:41,807 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 16:57:41,808 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 16:57:41,809 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:57:41,815 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 16:57:41,815 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:57:41,816 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:57:41,816 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 16:57:41,828 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 16:57:41,838 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:57:41,863 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:57:41,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:57:41,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:57:41,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:57:41,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:57:41,887 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:57:41,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:57:41,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:57:41,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:57:41,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:57:41,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:57:41,905 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:57:41,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:57:41,932 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 16:57:41,977 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 16:57:42,188 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 109227 states, 109226 states have (on average 4.671049017633164) internal successors, (in total 510200), 109226 states have internal predecessors, (510200), 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) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 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 16:57:46,633 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 109227 states, 109226 states have (on average 4.671049017633164) internal successors, (in total 510200), 109226 states have internal predecessors, (510200), 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). Second operand has 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 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 264186 states and 1236517 transitions. Complement of second has 6 states. [2025-04-26 16:57:46,634 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 16:57:46,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 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 16:57:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2025-04-26 16:57:46,643 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 120 transitions. Stem has 1 letters. Loop has 2 letters. [2025-04-26 16:57:46,643 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:57:46,643 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 120 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:57:46,644 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:57:46,644 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 120 transitions. Stem has 1 letters. Loop has 4 letters. [2025-04-26 16:57:46,644 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:57:46,644 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 264186 states and 1236517 transitions. [2025-04-26 16:57:51,443 INFO L131 ngComponentsAnalysis]: Automaton has 10533 accepting balls. 81154 [2025-04-26 16:57:54,263 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 264186 states to 174289 states and 798797 transitions. [2025-04-26 16:57:54,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89502 [2025-04-26 16:57:54,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117981 [2025-04-26 16:57:54,713 INFO L74 IsDeterministic]: Start isDeterministic. Operand 174289 states and 798797 transitions. [2025-04-26 16:57:54,714 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:57:54,714 INFO L218 hiAutomatonCegarLoop]: Abstraction has 174289 states and 798797 transitions. [2025-04-26 16:57:55,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174289 states and 798797 transitions. [2025-04-26 16:57:59,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174289 to 148544. [2025-04-26 16:58:00,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148544 states, 148544 states have (on average 4.637723502800517) internal successors, (in total 688906), 148543 states have internal predecessors, (688906), 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 16:58:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148544 states to 148544 states and 688906 transitions. [2025-04-26 16:58:01,259 INFO L240 hiAutomatonCegarLoop]: Abstraction has 148544 states and 688906 transitions. [2025-04-26 16:58:01,259 INFO L438 stractBuchiCegarLoop]: Abstraction has 148544 states and 688906 transitions. [2025-04-26 16:58:01,260 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:58:01,260 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 148544 states and 688906 transitions. [2025-04-26 16:58:02,631 INFO L131 ngComponentsAnalysis]: Automaton has 10533 accepting balls. 81154 [2025-04-26 16:58:02,631 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:58:02,631 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:58:02,636 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:58:02,636 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:58:02,636 INFO L752 eck$LassoCheckResult]: Stem: "[156] $Ultimate##0-->L38: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[122] L38-->thread1FINAL: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[124] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[159] L17-->L47: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 16:58:02,636 INFO L754 eck$LassoCheckResult]: Loop: "[127] L47-->L49: 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[]" "[129] L49-->L47: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-04-26 16:58:02,637 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:02,637 INFO L85 PathProgramCache]: Analyzing trace with hash 5692162, now seen corresponding path program 1 times [2025-04-26 16:58:02,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:02,637 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047968429] [2025-04-26 16:58:02,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:02,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:02,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:02,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:02,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:02,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:02,641 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:02,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:02,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:02,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:02,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:02,644 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:02,644 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:02,644 INFO L85 PathProgramCache]: Analyzing trace with hash 5027, now seen corresponding path program 1 times [2025-04-26 16:58:02,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:02,644 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34909625] [2025-04-26 16:58:02,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:02,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:02,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:58:02,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:58:02,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:02,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:02,647 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:02,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:58:02,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:58:02,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:02,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:02,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:02,649 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:02,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1175204452, now seen corresponding path program 1 times [2025-04-26 16:58:02,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:02,650 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541667151] [2025-04-26 16:58:02,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:02,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:02,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:58:02,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:58:02,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:02,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:02,653 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:02,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:58:02,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:58:02,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:02,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:02,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:02,671 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:02,671 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:02,671 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:02,671 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:02,671 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:58:02,671 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:02,671 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:02,671 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:02,672 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:58:02,672 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:02,672 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:02,672 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:02,687 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:02,688 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:58:02,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:02,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:02,690 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 16:58:02,692 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 16:58:02,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:02,694 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:02,710 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 16:58:02,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:02,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:02,712 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 16:58:02,714 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 16:58:02,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:02,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:02,779 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:58:02,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:02,783 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:02,783 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:02,783 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:02,784 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:02,784 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:58:02,784 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:02,784 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:02,784 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:02,784 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:58:02,784 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:02,784 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:02,784 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:02,798 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:02,799 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:58:02,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:02,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:02,802 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 16:58:02,805 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 16:58:02,806 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 16:58:02,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:02,816 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:02,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:02,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:02,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:02,816 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:02,817 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:02,818 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:58:02,821 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:58:02,821 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:58:02,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:02,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:02,823 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 16:58:02,823 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 16:58:02,824 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:58:02,827 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:58:02,827 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 16:58:02,827 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:58:02,827 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:58:02,827 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-04-26 16:58:02,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:02,833 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:58:02,843 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:02,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:02,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:02,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:02,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:02,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:58:02,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:02,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:58:02,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:58:02,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:02,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:02,865 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:58:02,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:02,877 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 16:58:02,878 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 16:58:02,878 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 148544 states and 688906 transitions. cyclomatic complexity: 554047 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:08,929 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 148544 states and 688906 transitions. cyclomatic complexity: 554047. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 376046 states and 1732909 transitions. Complement of second has 6 states. [2025-04-26 16:58:08,930 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 16:58:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2025-04-26 16:58:08,931 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:58:08,931 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:08,931 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 16:58:08,931 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:08,931 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 16:58:08,931 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:08,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 376046 states and 1732909 transitions. [2025-04-26 16:58:15,335 INFO L131 ngComponentsAnalysis]: Automaton has 9562 accepting balls. 63406 [2025-04-26 16:58:19,510 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 376046 states to 261824 states and 1183656 transitions. [2025-04-26 16:58:19,511 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 97760 [2025-04-26 16:58:20,008 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122306 [2025-04-26 16:58:20,008 INFO L74 IsDeterministic]: Start isDeterministic. Operand 261824 states and 1183656 transitions. [2025-04-26 16:58:20,009 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:58:20,009 INFO L218 hiAutomatonCegarLoop]: Abstraction has 261824 states and 1183656 transitions. [2025-04-26 16:58:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261824 states and 1183656 transitions. [2025-04-26 16:58:26,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261824 to 237107. [2025-04-26 16:58:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237107 states, 237107 states have (on average 4.490504287094012) internal successors, (in total 1064730), 237106 states have internal predecessors, (1064730), 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 16:58:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237107 states to 237107 states and 1064730 transitions. [2025-04-26 16:58:29,680 INFO L240 hiAutomatonCegarLoop]: Abstraction has 237107 states and 1064730 transitions. [2025-04-26 16:58:29,680 INFO L438 stractBuchiCegarLoop]: Abstraction has 237107 states and 1064730 transitions. [2025-04-26 16:58:29,680 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:58:29,680 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 237107 states and 1064730 transitions. [2025-04-26 16:58:31,506 INFO L131 ngComponentsAnalysis]: Automaton has 9562 accepting balls. 63406 [2025-04-26 16:58:31,506 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:58:31,506 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:58:31,519 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:58:31,519 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:58:31,519 INFO L752 eck$LassoCheckResult]: Stem: "[156] $Ultimate##0-->L38: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[122] L38-->thread1FINAL: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[124] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[159] L17-->L47: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[126] L47-->thread2FINAL: Formula: (<= v_z_4 v_x2_4) InVars {x2=v_x2_4, z=v_z_4} OutVars{x2=v_x2_4, z=v_z_4} AuxVars[] AssignedVars[]" "[128] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[162] L18-->L56: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-04-26 16:58:31,520 INFO L754 eck$LassoCheckResult]: Loop: "[131] L56-->L58: 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[]" "[133] L58-->L56: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-04-26 16:58:31,520 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:31,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2071598814, now seen corresponding path program 1 times [2025-04-26 16:58:31,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:31,520 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50815538] [2025-04-26 16:58:31,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:31,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:31,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:58:31,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:58:31,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:31,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:31,534 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:31,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:58:31,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:58:31,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:31,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:31,540 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:31,540 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:31,540 INFO L85 PathProgramCache]: Analyzing trace with hash 5155, now seen corresponding path program 1 times [2025-04-26 16:58:31,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:31,540 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558469852] [2025-04-26 16:58:31,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:31,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:31,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:58:31,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:58:31,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:31,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:31,543 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:31,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:58:31,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:58:31,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:31,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:31,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:31,546 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:31,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2058360896, now seen corresponding path program 1 times [2025-04-26 16:58:31,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:31,546 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790501757] [2025-04-26 16:58:31,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:31,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:31,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 16:58:31,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 16:58:31,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:31,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:31,551 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:31,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 16:58:31,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 16:58:31,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:31,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:31,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:31,572 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:31,572 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:31,572 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:31,573 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:31,573 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:58:31,573 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:31,573 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:31,573 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:31,573 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:58:31,573 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:31,573 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:31,573 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:31,591 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:31,592 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:58:31,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:31,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:31,594 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 16:58:31,595 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 16:58:31,599 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:31,599 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:31,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:31,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:31,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:31,622 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 16:58:31,627 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 16:58:31,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:31,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:31,694 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:58:31,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:31,699 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:31,699 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:31,699 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:31,699 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:31,699 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:58:31,699 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:31,699 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:31,699 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:31,699 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:58:31,699 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:31,699 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:31,700 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:31,715 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:31,715 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:58:31,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:31,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:31,717 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 16:58:31,719 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 16:58:31,720 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 16:58:31,730 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:31,730 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:31,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:31,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:31,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:31,731 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:31,732 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:31,733 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:58:31,735 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:58:31,736 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:58:31,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:31,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:31,738 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 16:58:31,740 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 16:58:31,740 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:58:31,743 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:58:31,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:31,744 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:58:31,744 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:58:31,744 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-04-26 16:58:31,753 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 [2025-04-26 16:58:31,754 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:58:31,768 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:31,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:58:31,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:58:31,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:31,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:31,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:58:31,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:31,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:58:31,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:58:31,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:31,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:31,794 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:58:31,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:31,807 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 16:58:31,807 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 16:58:31,808 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 237107 states and 1064730 transitions. cyclomatic complexity: 845118 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (in total 9), 3 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) [2025-04-26 16:58:39,803 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 237107 states and 1064730 transitions. cyclomatic complexity: 845118. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (in total 9), 3 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) Result 609993 states and 2731419 transitions. Complement of second has 6 states. [2025-04-26 16:58:39,804 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 16:58:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (in total 9), 3 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) [2025-04-26 16:58:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2025-04-26 16:58:39,806 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 7 letters. Loop has 2 letters. [2025-04-26 16:58:39,806 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:39,806 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 9 letters. Loop has 2 letters. [2025-04-26 16:58:39,806 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:39,808 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 7 letters. Loop has 4 letters. [2025-04-26 16:58:39,809 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:39,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 609993 states and 2731419 transitions.