/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 18:42:53,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:42:53,683 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:42:53,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:42:53,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:42:53,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:42:53,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:42:53,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:42:53,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:42:53,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:42:53,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:42:53,712 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:42:53,712 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:42:53,712 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:42:53,712 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:42:53,712 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:42:53,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:42:53,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:42:53,714 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:42:53,714 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:42:53,714 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:42:53,714 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:42:53,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:53,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:42:53,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:42:53,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:42:53,714 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:42:53,714 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:42:53,714 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:42:53,714 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:42:53,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:42:53,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:42:53,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:42:53,954 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:42:53,955 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:42:53,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/indep_loops_8.c.bpl [2025-04-26 18:42:53,956 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/indep_loops_8.c.bpl' [2025-04-26 18:42:53,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:42:53,978 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:42:53,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:53,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:42:53,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:42:53,987 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 06:42:53" (1/1) ... [2025-04-26 18:42:54,010 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 06:42:53" (1/1) ... [2025-04-26 18:42:54,016 INFO L138 Inliner]: procedures = 9, calls = 8, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:42:54,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:54,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:42:54,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:42:54,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:42:54,022 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 06:42:53" (1/1) ... [2025-04-26 18:42:54,022 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 06:42:53" (1/1) ... [2025-04-26 18:42:54,023 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 06:42:53" (1/1) ... [2025-04-26 18:42:54,023 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 06:42:53" (1/1) ... [2025-04-26 18:42:54,025 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 06:42:53" (1/1) ... [2025-04-26 18:42:54,025 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 06:42:53" (1/1) ... [2025-04-26 18:42:54,029 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 06:42:53" (1/1) ... [2025-04-26 18:42:54,030 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 06:42:53" (1/1) ... [2025-04-26 18:42:54,031 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 06:42:53" (1/1) ... [2025-04-26 18:42:54,042 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:42:54,043 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:42:54,043 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:42:54,043 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:42:54,047 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 06:42:53" (1/1) ... [2025-04-26 18:42:54,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:54,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:54,072 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 18:42:54,076 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 18:42:54,099 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:42:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:42:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:42:54,100 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:42:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:42:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:42:54,100 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 18:42:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 18:42:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 18:42:54,100 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:42:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:42:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:42:54,100 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 18:42:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 18:42:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 18:42:54,100 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 18:42:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 18:42:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 18:42:54,100 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-04-26 18:42:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-26 18:42:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-26 18:42:54,101 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2025-04-26 18:42:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2025-04-26 18:42:54,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2025-04-26 18:42:54,101 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2025-04-26 18:42:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2025-04-26 18:42:54,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2025-04-26 18:42:54,102 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 18:42:54,146 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:42:54,148 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:42:54,266 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:42:54,266 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:42:54,279 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:42:54,279 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:42:54,280 INFO L201 PluginConnector]: Adding new model indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:54 BoogieIcfgContainer [2025-04-26 18:42:54,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:42:54,281 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:42:54,282 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:42:54,286 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:42:54,286 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:54,286 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 06:42:53" (1/2) ... [2025-04-26 18:42:54,288 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47958943 and model type indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:42:54, skipping insertion in model container [2025-04-26 18:42:54,288 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:54,288 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 06:42:54" (2/2) ... [2025-04-26 18:42:54,289 INFO L376 chiAutomizerObserver]: Analyzing ICFG indep_loops_8.c.bpl [2025-04-26 18:42:54,377 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-04-26 18:42:54,420 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:42:54,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:42:54,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:54,425 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 18:42:54,426 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 18:42:54,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 65 transitions, 186 flow [2025-04-26 18:42:54,525 INFO L116 PetriNetUnfolderBase]: 8/49 cut-off events. [2025-04-26 18:42:54,526 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-26 18:42:54,533 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 18:42:54,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 65 transitions, 186 flow [2025-04-26 18:42:54,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 49 transitions, 146 flow [2025-04-26 18:42:54,536 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 66 places, 49 transitions, 146 flow [2025-04-26 18:42:54,537 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 49 transitions, 146 flow [2025-04-26 18:42:59,167 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 109227 states, 109226 states have (on average 7.866725871129584) internal successors, (in total 859251), 109226 states have internal predecessors, (859251), 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 18:42:59,422 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 109227 states, 109226 states have (on average 7.866725871129584) internal successors, (in total 859251), 109226 states have internal predecessors, (859251), 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 18:42:59,424 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:43:06,129 WARN L140 AmpleReduction]: Number of pruned transitions: 349051 [2025-04-26 18:43:06,130 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:43:06,130 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 54222 [2025-04-26 18:43:06,130 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:41 [2025-04-26 18:43:06,130 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:54963 [2025-04-26 18:43:06,130 WARN L145 AmpleReduction]: Times succ was already a loop node:203890 [2025-04-26 18:43:06,130 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:40559 [2025-04-26 18:43:06,130 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:43:06,371 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 18:43:06,377 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:43:06,378 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:43:06,378 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:43:06,378 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:43:06,378 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:43:06,378 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:43:06,378 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:43:06,378 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:43:06,567 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 18:43:09,331 INFO L131 ngComponentsAnalysis]: Automaton has 12355 accepting balls. 108460 [2025-04-26 18:43:09,332 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:43:09,332 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:43:09,342 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 18:43:09,342 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:43:09,342 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:43:09,543 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 18:43:11,337 INFO L131 ngComponentsAnalysis]: Automaton has 12355 accepting balls. 108460 [2025-04-26 18:43:11,337 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:43:11,337 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:43:11,343 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 18:43:11,343 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:43:11,347 INFO L752 eck$LassoCheckResult]: Stem: "[156] $Ultimate##0-->L38: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 18:43:11,347 INFO L754 eck$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 18:43:11,350 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash 187, now seen corresponding path program 1 times [2025-04-26 18:43:11,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:11,366 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915107175] [2025-04-26 18:43:11,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:11,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:11,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 18:43:11,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 18:43:11,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:11,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:11,417 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:11,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 18:43:11,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 18:43:11,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:11,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:11,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:11,439 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:11,439 INFO L85 PathProgramCache]: Analyzing trace with hash 4899, now seen corresponding path program 1 times [2025-04-26 18:43:11,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:11,439 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269974952] [2025-04-26 18:43:11,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:11,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:11,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:11,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:11,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:11,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:11,451 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:11,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:11,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:11,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:11,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:11,458 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:11,461 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:11,461 INFO L85 PathProgramCache]: Analyzing trace with hash 183645, now seen corresponding path program 1 times [2025-04-26 18:43:11,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:11,461 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050593538] [2025-04-26 18:43:11,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:11,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:11,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:11,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:11,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:11,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:11,466 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:11,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:11,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:11,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:11,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:11,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:11,638 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:11,644 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:11,644 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:11,644 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:11,644 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:43:11,644 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:11,644 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:11,644 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:11,645 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:43:11,645 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:11,645 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:11,673 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:11,726 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:11,726 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:43:11,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:11,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:11,745 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 18:43:11,751 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 18:43:11,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:43:11,755 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:11,792 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 [2025-04-26 18:43:11,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:11,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:11,802 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 18:43:11,804 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 18:43:11,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:43:11,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:11,880 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:43:11,885 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 18:43:11,885 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:11,885 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:11,885 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:11,885 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:11,885 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:43:11,885 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:11,885 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:11,886 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:11,886 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:43:11,886 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:11,886 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:11,887 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:11,931 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:11,935 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:43:11,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:11,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:11,941 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 18:43:11,942 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 18:43:11,946 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 18:43:11,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:43:11,966 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:43:11,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:43:11,966 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:43:11,966 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:43:11,974 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:43:11,974 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:43:11,988 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:43:11,997 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:43:11,998 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:43:11,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:11,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:12,004 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 18:43:12,013 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 18:43:12,013 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:43:12,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:12,017 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:43:12,017 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:43:12,018 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 18:43:12,034 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 [2025-04-26 18:43:12,037 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:43:12,066 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:12,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 18:43:12,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 18:43:12,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:12,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:12,078 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:43:12,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:12,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:12,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:12,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:12,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:12,109 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:43:12,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:12,138 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 18:43:12,175 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 18:43:12,382 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 18:43:17,460 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 18:43:17,461 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 18:43:17,465 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 18:43:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2025-04-26 18:43:17,468 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 120 transitions. Stem has 1 letters. Loop has 2 letters. [2025-04-26 18:43:17,469 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:17,469 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 120 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 18:43:17,469 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:17,469 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 120 transitions. Stem has 1 letters. Loop has 4 letters. [2025-04-26 18:43:17,469 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:17,469 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 264186 states and 1236517 transitions. [2025-04-26 18:43:22,719 INFO L131 ngComponentsAnalysis]: Automaton has 10533 accepting balls. 81154 [2025-04-26 18:43:26,088 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 264186 states to 174289 states and 798797 transitions. [2025-04-26 18:43:26,089 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89502 [2025-04-26 18:43:26,837 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117981 [2025-04-26 18:43:26,838 INFO L74 IsDeterministic]: Start isDeterministic. Operand 174289 states and 798797 transitions. [2025-04-26 18:43:26,838 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:43:26,838 INFO L218 hiAutomatonCegarLoop]: Abstraction has 174289 states and 798797 transitions. [2025-04-26 18:43:27,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174289 states and 798797 transitions. [2025-04-26 18:43:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174289 to 148544. [2025-04-26 18:43:32,337 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 18:43:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148544 states to 148544 states and 688906 transitions. [2025-04-26 18:43:33,553 INFO L240 hiAutomatonCegarLoop]: Abstraction has 148544 states and 688906 transitions. [2025-04-26 18:43:33,553 INFO L438 stractBuchiCegarLoop]: Abstraction has 148544 states and 688906 transitions. [2025-04-26 18:43:33,553 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:43:33,553 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 148544 states and 688906 transitions. [2025-04-26 18:43:35,292 INFO L131 ngComponentsAnalysis]: Automaton has 10533 accepting balls. 81154 [2025-04-26 18:43:35,292 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:43:35,292 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:43:35,299 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 18:43:35,299 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:43:35,301 INFO L752 eck$LassoCheckResult]: Stem: "[156] $Ultimate##0-->L38: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[122] L38-->thread1FINAL: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[124] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[159] L17-->L47: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 18:43:35,301 INFO L754 eck$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 18:43:35,302 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:35,302 INFO L85 PathProgramCache]: Analyzing trace with hash 5692162, now seen corresponding path program 1 times [2025-04-26 18:43:35,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:35,303 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420837367] [2025-04-26 18:43:35,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:35,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:35,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:43:35,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:43:35,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:35,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:35,316 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:35,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:43:35,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:43:35,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:35,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:35,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:35,324 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:35,324 INFO L85 PathProgramCache]: Analyzing trace with hash 5027, now seen corresponding path program 1 times [2025-04-26 18:43:35,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:35,324 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390798304] [2025-04-26 18:43:35,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:35,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:35,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:35,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:35,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:35,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:35,332 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:35,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:35,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:35,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:35,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:35,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:35,345 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:35,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1175204452, now seen corresponding path program 1 times [2025-04-26 18:43:35,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:35,345 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907756933] [2025-04-26 18:43:35,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:35,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:35,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:43:35,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:43:35,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:35,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:35,357 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:35,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:43:35,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:43:35,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:35,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:35,363 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:35,391 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:35,391 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:35,391 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:35,392 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:35,392 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:43:35,392 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:35,392 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:35,392 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:35,392 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:43:35,392 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:35,392 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:35,393 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:35,431 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:35,431 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:43:35,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:35,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:35,433 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 18:43:35,437 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 18:43:35,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:43:35,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:35,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:35,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:35,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:35,464 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 18:43:35,466 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 18:43:35,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:43:35,467 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:35,538 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:43:35,544 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 18:43:35,544 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:35,544 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:35,544 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:35,544 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:35,544 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:43:35,544 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:35,544 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:35,544 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:35,544 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:43:35,544 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:35,544 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:35,545 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:35,589 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:35,590 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:43:35,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:35,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:35,597 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 18:43:35,600 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 18:43:35,601 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 18:43:35,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:43:35,615 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:43:35,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:43:35,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:43:35,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:43:35,616 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:43:35,616 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:43:35,618 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:43:35,628 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:43:35,629 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:43:35,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:35,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:35,632 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 18:43:35,633 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 18:43:35,643 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:43:35,646 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 18:43:35,647 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 18:43:35,648 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:43:35,648 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:43:35,648 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-04-26 18:43:35,656 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 18:43:35,659 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:43:35,681 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:35,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:43:35,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:43:35,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:35,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:35,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:43:35,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:35,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:35,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:35,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:35,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:35,729 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:43:35,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:35,749 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 18:43:35,753 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 18:43:35,753 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 18:43:41,576 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 18:43:41,577 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 18:43:41,578 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 18:43:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2025-04-26 18:43:41,578 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 18:43:41,578 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:41,578 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 18:43:41,578 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:41,578 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 18:43:41,578 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:41,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 376046 states and 1732909 transitions. [2025-04-26 18:43:49,535 INFO L131 ngComponentsAnalysis]: Automaton has 9562 accepting balls. 63406 [2025-04-26 18:43:54,472 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 376046 states to 261824 states and 1183656 transitions. [2025-04-26 18:43:54,473 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 97760 [2025-04-26 18:43:55,067 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122306 [2025-04-26 18:43:55,068 INFO L74 IsDeterministic]: Start isDeterministic. Operand 261824 states and 1183656 transitions. [2025-04-26 18:43:55,068 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:43:55,068 INFO L218 hiAutomatonCegarLoop]: Abstraction has 261824 states and 1183656 transitions. [2025-04-26 18:43:55,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261824 states and 1183656 transitions. [2025-04-26 18:44:02,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261824 to 237107. [2025-04-26 18:44:03,378 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 18:44:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237107 states to 237107 states and 1064730 transitions. [2025-04-26 18:44:05,877 INFO L240 hiAutomatonCegarLoop]: Abstraction has 237107 states and 1064730 transitions. [2025-04-26 18:44:05,877 INFO L438 stractBuchiCegarLoop]: Abstraction has 237107 states and 1064730 transitions. [2025-04-26 18:44:05,877 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:44:05,877 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 237107 states and 1064730 transitions. [2025-04-26 18:44:08,740 INFO L131 ngComponentsAnalysis]: Automaton has 9562 accepting balls. 63406 [2025-04-26 18:44:08,741 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:08,741 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:08,748 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:44:08,748 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:44:08,748 INFO L752 eck$LassoCheckResult]: Stem: "[156] $Ultimate##0-->L38: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[122] L38-->thread1FINAL: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[124] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[159] L17-->L47: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[126] L47-->thread2FINAL: Formula: (<= v_z_4 v_x2_4) InVars {x2=v_x2_4, z=v_z_4} OutVars{x2=v_x2_4, z=v_z_4} AuxVars[] AssignedVars[]" "[128] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[162] L18-->L56: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-04-26 18:44:08,749 INFO L754 eck$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 18:44:08,749 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:08,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2071598814, now seen corresponding path program 1 times [2025-04-26 18:44:08,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:08,749 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472733663] [2025-04-26 18:44:08,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:08,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:08,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:44:08,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:44:08,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:08,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:08,761 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:08,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:44:08,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:44:08,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:08,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:08,770 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:08,770 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:08,770 INFO L85 PathProgramCache]: Analyzing trace with hash 5155, now seen corresponding path program 1 times [2025-04-26 18:44:08,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:08,770 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80108388] [2025-04-26 18:44:08,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:08,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:08,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:08,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:08,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:08,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:08,776 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:08,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:08,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:08,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:08,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:08,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:08,785 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2058360896, now seen corresponding path program 1 times [2025-04-26 18:44:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:08,785 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567952899] [2025-04-26 18:44:08,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:08,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 18:44:08,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 18:44:08,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:08,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:08,790 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:08,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 18:44:08,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 18:44:08,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:08,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:08,802 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:08,821 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:08,822 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:08,822 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:08,822 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:08,822 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:44:08,822 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:08,822 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:08,822 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:08,822 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:44:08,822 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:08,822 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:08,823 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:08,843 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:08,843 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:44:08,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:08,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:08,847 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 18:44:08,855 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 18:44:08,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:08,857 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:08,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 18:44:08,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:08,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:08,880 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 18:44:08,881 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 18:44:08,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:08,883 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:08,952 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:44:08,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 18:44:08,957 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:08,958 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:08,958 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:08,958 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:08,958 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:44:08,958 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:08,958 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:08,958 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:08,958 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:44:08,958 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:08,958 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:08,959 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:08,981 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:08,981 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:44:08,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:08,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:08,986 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 18:44:08,988 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 18:44:08,988 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 18:44:08,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:08,999 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:08,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:08,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:08,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:09,000 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:09,000 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:09,002 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:44:09,005 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:44:09,005 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:44:09,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:09,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:09,007 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 18:44:09,009 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 18:44:09,010 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:44:09,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 18:44:09,014 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:44:09,014 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:44:09,014 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-04-26 18:44:09,020 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 18:44:09,021 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:44:09,034 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:09,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:44:09,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:44:09,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:09,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:09,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:44:09,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:09,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:09,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:09,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:09,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:09,063 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:44:09,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:09,079 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 18:44:09,079 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 18:44:09,079 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 18:44:19,402 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 18:44:19,405 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 18:44:19,405 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 18:44:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2025-04-26 18:44:19,406 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 7 letters. Loop has 2 letters. [2025-04-26 18:44:19,406 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:19,406 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 9 letters. Loop has 2 letters. [2025-04-26 18:44:19,406 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:19,406 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 7 letters. Loop has 4 letters. [2025-04-26 18:44:19,406 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:19,406 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 609993 states and 2731419 transitions.