/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/3_thr/me1-1p2c.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:42:33,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:42:33,982 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:42:33,989 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:42:33,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:42:33,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:42:33,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:42:34,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:42:34,008 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:42:34,008 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:42:34,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:42:34,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:42:34,009 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:42:34,009 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:42:34,009 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:42:34,009 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:42:34,009 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:42:34,009 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:42:34,009 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:42:34,009 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:42:34,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:42:34,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:42:34,009 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:42:34,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:42:34,011 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:42:34,011 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:42:34,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:42:34,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:42:34,011 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:42:34,011 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:42:34,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:42:34,011 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:42:34,011 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:42:34,011 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:42:34,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:42:34,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:34,012 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:42:34,012 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:42:34,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:42:34,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:42:34,012 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:42:34,012 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:42:34,012 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:42:34,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:42:34,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:42:34,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:42:34,247 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:42:34,247 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:42:34,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/3_thr/me1-1p2c.c.bpl [2025-04-26 18:42:34,249 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/3_thr/me1-1p2c.c.bpl' [2025-04-26 18:42:34,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:42:34,266 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:42:34,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:34,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:42:34,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:42:34,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:34" (1/1) ... [2025-04-26 18:42:34,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:34" (1/1) ... [2025-04-26 18:42:34,299 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:42:34,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:34,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:42:34,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:42:34,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:42:34,305 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:34" (1/1) ... [2025-04-26 18:42:34,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:34" (1/1) ... [2025-04-26 18:42:34,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:34" (1/1) ... [2025-04-26 18:42:34,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:34" (1/1) ... [2025-04-26 18:42:34,307 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:34" (1/1) ... [2025-04-26 18:42:34,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:34" (1/1) ... [2025-04-26 18:42:34,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:34" (1/1) ... [2025-04-26 18:42:34,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:34" (1/1) ... [2025-04-26 18:42:34,310 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:34" (1/1) ... [2025-04-26 18:42:34,316 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:42:34,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:42:34,317 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:42:34,317 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:42:34,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:34" (1/1) ... [2025-04-26 18:42:34,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:34,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:34,340 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 18:42:34,344 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 18:42:34,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:42:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:42:34,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:42:34,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:42:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:42:34,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:42:34,364 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 18:42:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 18:42:34,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 18:42:34,364 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:42:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:42:34,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:42:34,365 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 18:42:34,397 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:42:34,398 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:42:34,465 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:42:34,465 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:42:34,486 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:42:34,486 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:42:34,487 INFO L201 PluginConnector]: Adding new model me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:34 BoogieIcfgContainer [2025-04-26 18:42:34,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:42:34,487 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:42:34,487 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:42:34,492 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:42:34,493 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:34,493 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:34" (1/2) ... [2025-04-26 18:42:34,495 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@315c7a96 and model type me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:42:34, skipping insertion in model container [2025-04-26 18:42:34,495 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:34,496 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:34" (2/2) ... [2025-04-26 18:42:34,497 INFO L376 chiAutomizerObserver]: Analyzing ICFG me1-1p2c.c.bpl [2025-04-26 18:42:34,557 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-26 18:42:34,609 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:42:34,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:42:34,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:34,612 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 18:42:34,613 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 18:42:34,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 79 flow [2025-04-26 18:42:34,676 INFO L116 PetriNetUnfolderBase]: 3/23 cut-off events. [2025-04-26 18:42:34,678 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-26 18:42:34,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 3/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2025-04-26 18:42:34,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 79 flow [2025-04-26 18:42:34,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2025-04-26 18:42:34,686 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 30 places, 23 transitions, 64 flow [2025-04-26 18:42:34,687 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 23 transitions, 64 flow [2025-04-26 18:42:34,713 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 189 states, 188 states have (on average 2.9202127659574466) internal successors, (in total 549), 188 states have internal predecessors, (549), 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 18:42:34,714 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 189 states, 188 states have (on average 2.9202127659574466) internal successors, (in total 549), 188 states have internal predecessors, (549), 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 18:42:34,716 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:42:34,864 WARN L140 AmpleReduction]: Number of pruned transitions: 152 [2025-04-26 18:42:34,864 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:42:34,864 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 9 [2025-04-26 18:42:34,864 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:64 [2025-04-26 18:42:34,864 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:76 [2025-04-26 18:42:34,864 WARN L145 AmpleReduction]: Times succ was already a loop node:55 [2025-04-26 18:42:34,865 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:0 [2025-04-26 18:42:34,865 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:42:34,865 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 150 states, 149 states have (on average 1.8993288590604027) internal successors, (in total 283), 149 states have internal predecessors, (283), 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 18:42:34,872 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:42:34,873 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:42:34,873 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:42:34,873 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:42:34,873 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:42:34,873 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:42:34,873 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:42:34,873 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:42:34,875 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 150 states, 149 states have (on average 1.8993288590604027) internal successors, (in total 283), 149 states have internal predecessors, (283), 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 18:42:34,890 INFO L131 ngComponentsAnalysis]: Automaton has 26 accepting balls. 70 [2025-04-26 18:42:34,890 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:34,890 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:34,895 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:34,895 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:34,896 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:42:34,896 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 150 states, 149 states have (on average 1.8993288590604027) internal successors, (in total 283), 149 states have internal predecessors, (283), 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 18:42:34,903 INFO L131 ngComponentsAnalysis]: Automaton has 26 accepting balls. 70 [2025-04-26 18:42:34,903 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:34,903 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:34,903 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:34,903 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:34,907 INFO L752 eck$LassoCheckResult]: Stem: "[54] $Ultimate##0-->L14: Formula: (and (= v_g_5 0) (= v_f_1 0)) InVars {g=v_g_5, f=v_f_1} OutVars{g=v_g_5, f=v_f_1} AuxVars[] AssignedVars[]" "[78] L14-->L25: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 18:42:34,907 INFO L754 eck$LassoCheckResult]: Loop: "[62] L25-->L27: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[64] L27-->L25: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-04-26 18:42:34,910 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:34,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2713, now seen corresponding path program 1 times [2025-04-26 18:42:34,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:34,915 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403194385] [2025-04-26 18:42:34,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:34,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:34,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:34,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:34,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:34,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:34,959 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:34,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:34,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:34,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:34,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:34,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:34,977 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:34,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2947, now seen corresponding path program 1 times [2025-04-26 18:42:34,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:34,978 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049806799] [2025-04-26 18:42:34,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:34,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:34,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:34,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:34,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:34,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:34,986 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:34,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:34,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:34,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:34,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:34,990 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:34,991 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:34,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2609179, now seen corresponding path program 1 times [2025-04-26 18:42:34,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:34,991 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924987484] [2025-04-26 18:42:34,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:34,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:34,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:34,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:34,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:34,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:34,998 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:34,999 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:35,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:35,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:35,042 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:35,042 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:35,042 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:35,042 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:35,043 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:35,043 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,043 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:35,043 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:35,043 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-1p2c.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:35,043 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:35,043 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:35,097 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:35,134 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:35,134 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:35,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,138 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 18:42:35,140 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 18:42:35,141 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:35,141 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:35,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:35,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,165 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 18:42:35,166 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 18:42:35,168 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:35,168 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:35,262 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:35,267 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 18:42:35,268 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:35,268 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:35,268 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:35,268 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:35,268 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:35,268 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,269 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:35,269 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:35,269 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-1p2c.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:35,269 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:35,269 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:35,270 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:35,297 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:35,311 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:35,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,315 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 18:42:35,318 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 18:42:35,319 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 18:42:35,340 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:35,340 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:35,340 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:35,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:35,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:35,360 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:35,361 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:35,366 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:35,372 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:42:35,372 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:42:35,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,378 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 18:42:35,379 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 18:42:35,381 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:35,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 18:42:35,384 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:35,385 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:35,385 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-04-26 18:42:35,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:35,394 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:35,417 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:35,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:35,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:35,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:35,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:35,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:35,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:35,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:35,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:35,445 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:35,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:35,468 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 18:42:35,487 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 18:42:35,488 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 150 states, 149 states have (on average 1.8993288590604027) internal successors, (in total 283), 149 states have internal predecessors, (283), 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 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 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 18:42:35,613 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 150 states, 149 states have (on average 1.8993288590604027) internal successors, (in total 283), 149 states have internal predecessors, (283), 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 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 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 520 states and 1090 transitions. Complement of second has 7 states. [2025-04-26 18:42:35,617 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 18:42:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 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 18:42:35,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2025-04-26 18:42:35,623 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 18:42:35,625 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:35,625 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 18:42:35,625 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:35,626 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 18:42:35,626 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:35,626 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 520 states and 1090 transitions. [2025-04-26 18:42:35,637 INFO L131 ngComponentsAnalysis]: Automaton has 23 accepting balls. 64 [2025-04-26 18:42:35,649 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 520 states to 382 states and 856 transitions. [2025-04-26 18:42:35,650 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 237 [2025-04-26 18:42:35,651 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 309 [2025-04-26 18:42:35,652 INFO L74 IsDeterministic]: Start isDeterministic. Operand 382 states and 856 transitions. [2025-04-26 18:42:35,652 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:35,652 INFO L218 hiAutomatonCegarLoop]: Abstraction has 382 states and 856 transitions. [2025-04-26 18:42:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states and 856 transitions. [2025-04-26 18:42:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 254. [2025-04-26 18:42:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 254 states have (on average 2.405511811023622) internal successors, (in total 611), 253 states have internal predecessors, (611), 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 18:42:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 611 transitions. [2025-04-26 18:42:35,693 INFO L240 hiAutomatonCegarLoop]: Abstraction has 254 states and 611 transitions. [2025-04-26 18:42:35,693 INFO L438 stractBuchiCegarLoop]: Abstraction has 254 states and 611 transitions. [2025-04-26 18:42:35,693 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:42:35,693 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 254 states and 611 transitions. [2025-04-26 18:42:35,696 INFO L131 ngComponentsAnalysis]: Automaton has 23 accepting balls. 64 [2025-04-26 18:42:35,697 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:35,697 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:35,697 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 18:42:35,697 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:35,697 INFO L752 eck$LassoCheckResult]: Stem: "[54] $Ultimate##0-->L14: Formula: (and (= v_g_5 0) (= v_f_1 0)) InVars {g=v_g_5, f=v_f_1} OutVars{g=v_g_5, f=v_f_1} AuxVars[] AssignedVars[]" "[78] L14-->L25: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[81] L14-1-->$Ultimate##0: 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]" "[66] $Ultimate##0-->L38-1: Formula: (< 0 v_g_3) InVars {g=v_g_3} OutVars{g=v_g_3} AuxVars[] AssignedVars[]" "[68] L38-1-->L38: Formula: (< v_y2_2 v_x2_6) InVars {y2=v_y2_2, x2=v_x2_6} OutVars{y2=v_y2_2, x2=v_x2_6} AuxVars[] AssignedVars[]" "[70] L38-->L38-1: Formula: (and (< v_y2_7 v_x2_16) (= (+ v_x2_15 1) v_x2_16)) InVars {y2=v_y2_7, x2=v_x2_16} OutVars{y2=v_y2_7, x2=v_x2_15} AuxVars[] AssignedVars[x2]" [2025-04-26 18:42:35,697 INFO L754 eck$LassoCheckResult]: Loop: "[62] L25-->L27: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[64] L27-->L25: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-04-26 18:42:35,698 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:35,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1786976148, now seen corresponding path program 1 times [2025-04-26 18:42:35,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:35,698 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846003367] [2025-04-26 18:42:35,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:35,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:35,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:35,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:35,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:35,750 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 18:42:35,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 18:42:35,751 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846003367] [2025-04-26 18:42:35,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846003367] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 18:42:35,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 18:42:35,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 18:42:35,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137950072] [2025-04-26 18:42:35,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 18:42:35,759 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 18:42:35,759 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:35,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2947, now seen corresponding path program 2 times [2025-04-26 18:42:35,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:35,760 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67506159] [2025-04-26 18:42:35,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 18:42:35,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:35,764 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:35,767 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:35,768 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 18:42:35,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,768 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:35,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:35,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:35,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,770 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:35,786 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:35,786 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:35,786 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:35,786 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:35,786 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:35,786 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,786 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:35,786 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:35,786 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-1p2c.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:35,786 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:35,786 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:35,787 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:35,813 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:35,813 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:35,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,815 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 18:42:35,817 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 18:42:35,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:35,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:35,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 18:42:35,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,838 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 18:42:35,842 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 18:42:35,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:35,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:35,910 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:35,914 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 18:42:35,914 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:35,914 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:35,914 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:35,914 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:35,915 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:35,915 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,915 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:35,915 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:35,915 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-1p2c.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:35,915 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:35,915 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:35,915 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:35,933 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:35,934 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:35,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,936 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 18:42:35,937 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 18:42:35,938 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 18:42:35,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:35,949 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:35,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:35,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:35,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:35,950 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:35,951 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:35,953 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:35,959 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:42:35,959 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:42:35,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,961 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 18:42:35,962 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 18:42:35,963 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:35,966 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 18:42:35,966 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:35,966 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:35,966 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z2) = -1*x2 + 1*z2 Supporting invariants [] [2025-04-26 18:42:35,971 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 18:42:35,973 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:35,983 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:35,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:35,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:35,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:35,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:35,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:36,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:36,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:36,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:36,005 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:36,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:36,017 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 18:42:36,017 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 18:42:36,017 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 254 states and 611 transitions. cyclomatic complexity: 400 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:36,078 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 254 states and 611 transitions. cyclomatic complexity: 400. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 701 states and 1621 transitions. Complement of second has 7 states. [2025-04-26 18:42:36,079 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 18:42:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 54 transitions. [2025-04-26 18:42:36,080 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 54 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 18:42:36,080 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:36,080 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 54 transitions. Stem has 8 letters. Loop has 2 letters. [2025-04-26 18:42:36,080 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:36,080 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 54 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 18:42:36,080 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:36,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 701 states and 1621 transitions. [2025-04-26 18:42:36,086 INFO L131 ngComponentsAnalysis]: Automaton has 38 accepting balls. 100 [2025-04-26 18:42:36,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 701 states to 621 states and 1458 transitions. [2025-04-26 18:42:36,093 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 392 [2025-04-26 18:42:36,095 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 475 [2025-04-26 18:42:36,095 INFO L74 IsDeterministic]: Start isDeterministic. Operand 621 states and 1458 transitions. [2025-04-26 18:42:36,095 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:36,095 INFO L218 hiAutomatonCegarLoop]: Abstraction has 621 states and 1458 transitions. [2025-04-26 18:42:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states and 1458 transitions. [2025-04-26 18:42:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 376. [2025-04-26 18:42:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 376 states have (on average 2.720744680851064) internal successors, (in total 1023), 375 states have internal predecessors, (1023), 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 18:42:36,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1023 transitions. [2025-04-26 18:42:36,119 INFO L240 hiAutomatonCegarLoop]: Abstraction has 376 states and 1023 transitions. [2025-04-26 18:42:36,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 18:42:36,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 18:42:36,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 18:42:36,121 INFO L87 Difference]: Start difference. First operand 376 states and 1023 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 18:42:36,146 INFO L93 Difference]: Finished difference Result 52 states and 86 transitions. [2025-04-26 18:42:36,146 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 86 transitions. [2025-04-26 18:42:36,147 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 18 [2025-04-26 18:42:36,147 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 78 transitions. [2025-04-26 18:42:36,147 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2025-04-26 18:42:36,147 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2025-04-26 18:42:36,147 INFO L74 IsDeterministic]: Start isDeterministic. Operand 49 states and 78 transitions. [2025-04-26 18:42:36,147 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:36,147 INFO L218 hiAutomatonCegarLoop]: Abstraction has 49 states and 78 transitions. [2025-04-26 18:42:36,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 78 transitions. [2025-04-26 18:42:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2025-04-26 18:42:36,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.5918367346938775) internal successors, (in total 78), 48 states have internal predecessors, (78), 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 18:42:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 78 transitions. [2025-04-26 18:42:36,149 INFO L240 hiAutomatonCegarLoop]: Abstraction has 49 states and 78 transitions. [2025-04-26 18:42:36,149 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 18:42:36,150 INFO L438 stractBuchiCegarLoop]: Abstraction has 49 states and 78 transitions. [2025-04-26 18:42:36,150 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:42:36,150 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 78 transitions. [2025-04-26 18:42:36,150 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 18 [2025-04-26 18:42:36,150 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:36,150 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:36,151 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:42:36,151 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:36,151 INFO L752 eck$LassoCheckResult]: Stem: "[54] $Ultimate##0-->L14: Formula: (and (= v_g_5 0) (= v_f_1 0)) InVars {g=v_g_5, f=v_f_1} OutVars{g=v_g_5, f=v_f_1} AuxVars[] AssignedVars[]" "[78] L14-->L25: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[81] L14-1-->$Ultimate##0: 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]" "[61] L25-->L29: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[63] L29-->thread1FINAL: Formula: (= v_g_1 (+ v_g_2 1)) InVars {g=v_g_2} OutVars{g=v_g_1} AuxVars[] AssignedVars[g]" "[66] $Ultimate##0-->L38-1: Formula: (< 0 v_g_3) InVars {g=v_g_3} OutVars{g=v_g_3} AuxVars[] AssignedVars[]" "[65] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" [2025-04-26 18:42:36,151 INFO L754 eck$LassoCheckResult]: Loop: "[68] L38-1-->L38: Formula: (< v_y2_2 v_x2_6) InVars {y2=v_y2_2, x2=v_x2_6} OutVars{y2=v_y2_2, x2=v_x2_6} AuxVars[] AssignedVars[]" "[70] L38-->L38-1: Formula: (and (< v_y2_7 v_x2_16) (= (+ v_x2_15 1) v_x2_16)) InVars {y2=v_y2_7, x2=v_x2_16} OutVars{y2=v_y2_7, x2=v_x2_15} AuxVars[] AssignedVars[x2]" [2025-04-26 18:42:36,151 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:36,151 INFO L85 PathProgramCache]: Analyzing trace with hash 438160441, now seen corresponding path program 1 times [2025-04-26 18:42:36,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:36,151 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072612788] [2025-04-26 18:42:36,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:36,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:36,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:42:36,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:42:36,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,155 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:36,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:42:36,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:42:36,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,160 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:36,160 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:36,160 INFO L85 PathProgramCache]: Analyzing trace with hash 3139, now seen corresponding path program 1 times [2025-04-26 18:42:36,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:36,160 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330471099] [2025-04-26 18:42:36,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:36,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:36,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:36,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:36,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,165 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:36,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:36,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:36,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,168 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:36,168 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:36,168 INFO L85 PathProgramCache]: Analyzing trace with hash 165390971, now seen corresponding path program 1 times [2025-04-26 18:42:36,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:36,168 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043250071] [2025-04-26 18:42:36,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:36,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:36,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 18:42:36,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 18:42:36,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,176 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:36,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 18:42:36,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 18:42:36,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,182 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:36,194 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:36,194 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:36,194 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:36,194 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:36,194 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:36,194 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,194 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:36,194 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:36,194 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-1p2c.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:42:36,194 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:36,194 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:36,195 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:36,212 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:36,212 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:36,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,214 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 18:42:36,216 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 18:42:36,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:36,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:36,234 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 18:42:36,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,236 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 18:42:36,237 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 18:42:36,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:36,237 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:36,307 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:36,311 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 18:42:36,312 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:36,312 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:36,312 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:36,312 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:36,312 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:36,312 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,312 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:36,312 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:36,312 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-1p2c.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:42:36,312 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:36,312 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:36,313 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:36,328 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:36,328 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:36,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,330 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 18:42:36,331 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 18:42:36,331 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 18:42:36,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:36,343 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:36,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:36,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:36,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:36,344 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:36,344 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:36,347 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:36,353 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:42:36,354 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:42:36,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,356 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 18:42:36,357 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 18:42:36,358 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:36,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:36,362 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:36,362 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:36,362 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, y2) = 1*x2 - 1*y2 Supporting invariants [] [2025-04-26 18:42:36,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 18:42:36,369 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:36,379 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:36,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:42:36,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:42:36,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:36,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:36,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:36,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:36,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:36,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:36,403 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:36,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:36,416 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 18:42:36,416 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 18:42:36,416 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 49 states and 78 transitions. cyclomatic complexity: 40 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 18:42:36,471 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 49 states and 78 transitions. cyclomatic complexity: 40. 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 116 states and 182 transitions. Complement of second has 7 states. [2025-04-26 18:42:36,471 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:36,472 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 18:42:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 51 transitions. [2025-04-26 18:42:36,472 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 51 transitions. Stem has 7 letters. Loop has 2 letters. [2025-04-26 18:42:36,472 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:36,472 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 51 transitions. Stem has 9 letters. Loop has 2 letters. [2025-04-26 18:42:36,472 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:36,472 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 51 transitions. Stem has 7 letters. Loop has 4 letters. [2025-04-26 18:42:36,472 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:36,472 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 182 transitions. [2025-04-26 18:42:36,473 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:36,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 0 states and 0 transitions. [2025-04-26 18:42:36,473 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 18:42:36,473 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 18:42:36,473 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 18:42:36,473 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:42:36,473 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:36,473 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:36,474 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:36,474 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 18:42:36,474 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 18:42:36,474 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:36,474 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 18:42:36,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-26 18:42:36,488 INFO L201 PluginConnector]: Adding new model me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:42:36 BoogieIcfgContainer [2025-04-26 18:42:36,488 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:42:36,489 INFO L158 Benchmark]: Toolchain (without parser) took 2223.59ms. Allocated memory was 159.4MB in the beginning and 167.8MB in the end (delta: 8.4MB). Free memory was 85.6MB in the beginning and 46.4MB in the end (delta: 39.2MB). Peak memory consumption was 47.5MB. Max. memory is 8.0GB. [2025-04-26 18:42:36,489 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.17ms. Allocated memory is still 159.4MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:36,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.10ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 83.6MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 18:42:36,490 INFO L158 Benchmark]: Boogie Preprocessor took 15.46ms. Allocated memory is still 159.4MB. Free memory was 83.6MB in the beginning and 82.6MB in the end (delta: 975.2kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:36,490 INFO L158 Benchmark]: RCFGBuilder took 170.32ms. Allocated memory is still 159.4MB. Free memory was 82.6MB in the beginning and 73.4MB in the end (delta: 9.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 18:42:36,490 INFO L158 Benchmark]: BuchiAutomizer took 2001.10ms. Allocated memory was 159.4MB in the beginning and 167.8MB in the end (delta: 8.4MB). Free memory was 73.2MB in the beginning and 46.4MB in the end (delta: 26.8MB). Peak memory consumption was 39.1MB. Max. memory is 8.0GB. [2025-04-26 18:42:36,491 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.17ms. Allocated memory is still 159.4MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.10ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 83.6MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.46ms. Allocated memory is still 159.4MB. Free memory was 83.6MB in the beginning and 82.6MB in the end (delta: 975.2kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 170.32ms. Allocated memory is still 159.4MB. Free memory was 82.6MB in the beginning and 73.4MB in the end (delta: 9.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * BuchiAutomizer took 2001.10ms. Allocated memory was 159.4MB in the beginning and 167.8MB in the end (delta: 8.4MB). Free memory was 73.2MB in the beginning and 46.4MB in the end (delta: 26.8MB). Peak memory consumption was 39.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 373 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 101 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 109 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 169 IncrementalHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 61 mSDtfsCounter, 169 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 73ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.2s InitialAbstraction: Time to compute Ample Reduction [ms]: 261, Number of transitions in reduction automaton: 283, Number of states in reduction automaton: 150, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y2 + x2 and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 18:42:36,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...