/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 ../../../trunk/examples/concurrent/bpl/POPL2023/min2-max2-sample.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:39:24,786 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:39:24,838 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:39:24,843 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:39:24,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:39:24,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:39:24,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:39:24,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:39:24,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:39:24,867 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:39:24,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:39:24,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:39:24,867 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:39:24,867 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:39:24,867 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:39:24,867 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:39:24,867 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:39:24,867 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:39:24,867 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:39:24,867 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:39:24,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:39:24,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:39:24,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:39:24,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:39:24,869 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:39:24,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:39:24,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:39:24,869 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:39:24,869 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:39:24,869 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:39:25,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:39:25,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:39:25,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:39:25,104 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:39:25,104 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:39:25,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/POPL2023/min2-max2-sample.bpl [2025-04-26 18:39:25,107 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/POPL2023/min2-max2-sample.bpl' [2025-04-26 18:39:25,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:39:25,126 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:39:25,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:39:25,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:39:25,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:39:25,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:39:25" (1/1) ... [2025-04-26 18:39:25,154 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:39:25" (1/1) ... [2025-04-26 18:39:25,163 INFO L138 Inliner]: procedures = 4, calls = 5, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:39:25,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:39:25,167 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:39:25,167 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:39:25,167 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:39:25,172 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:39:25" (1/1) ... [2025-04-26 18:39:25,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:39:25" (1/1) ... [2025-04-26 18:39:25,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:39:25" (1/1) ... [2025-04-26 18:39:25,174 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:39:25" (1/1) ... [2025-04-26 18:39:25,178 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:39:25" (1/1) ... [2025-04-26 18:39:25,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:39:25" (1/1) ... [2025-04-26 18:39:25,181 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:39:25" (1/1) ... [2025-04-26 18:39:25,182 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:39:25" (1/1) ... [2025-04-26 18:39:25,183 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:39:25" (1/1) ... [2025-04-26 18:39:25,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:39:25,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:39:25,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:39:25,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:39:25,196 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:39:25" (1/1) ... [2025-04-26 18:39:25,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:39:25,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:39:25,223 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 18:39:25,225 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 18:39:25,246 INFO L124 BoogieDeclarations]: Specification and implementation of procedure computeMax given in one single declaration [2025-04-26 18:39:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure computeMax [2025-04-26 18:39:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure computeMax [2025-04-26 18:39:25,246 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:39:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:39:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:39:25,246 INFO L124 BoogieDeclarations]: Specification and implementation of procedure sample given in one single declaration [2025-04-26 18:39:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure sample [2025-04-26 18:39:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure sample [2025-04-26 18:39:25,246 INFO L124 BoogieDeclarations]: Specification and implementation of procedure computeMin given in one single declaration [2025-04-26 18:39:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure computeMin [2025-04-26 18:39:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure computeMin [2025-04-26 18:39:25,247 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 18:39:25,285 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:39:25,287 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:39:25,373 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:39:25,373 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:39:25,388 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:39:25,389 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-04-26 18:39:25,389 INFO L201 PluginConnector]: Adding new model min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:39:25 BoogieIcfgContainer [2025-04-26 18:39:25,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:39:25,394 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:39:25,394 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:39:25,398 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:39:25,399 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:39:25,399 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:39:25" (1/2) ... [2025-04-26 18:39:25,400 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c01efd1 and model type min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:39:25, skipping insertion in model container [2025-04-26 18:39:25,401 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:39:25,401 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:39:25" (2/2) ... [2025-04-26 18:39:25,402 INFO L376 chiAutomizerObserver]: Analyzing ICFG min2-max2-sample.bpl [2025-04-26 18:39:25,466 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-26 18:39:25,506 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:39:25,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:39:25,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:39:25,510 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 18:39:25,511 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 18:39:25,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 130 flow [2025-04-26 18:39:25,595 INFO L116 PetriNetUnfolderBase]: 5/39 cut-off events. [2025-04-26 18:39:25,597 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-26 18:39:25,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 39 events. 5/39 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 100 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-04-26 18:39:25,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 49 transitions, 130 flow [2025-04-26 18:39:25,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 39 transitions, 105 flow [2025-04-26 18:39:25,606 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 50 places, 39 transitions, 105 flow [2025-04-26 18:39:25,608 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 39 transitions, 105 flow [2025-04-26 18:39:25,916 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6229 states, 6227 states have (on average 4.922916332102136) internal successors, (in total 30655), 6228 states have internal predecessors, (30655), 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 18:39:25,941 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 6229 states, 6227 states have (on average 4.922916332102136) internal successors, (in total 30655), 6228 states have internal predecessors, (30655), 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 18:39:25,943 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:39:26,752 WARN L140 AmpleReduction]: Number of pruned transitions: 10395 [2025-04-26 18:39:26,753 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:39:26,753 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 1137 [2025-04-26 18:39:26,753 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:681 [2025-04-26 18:39:26,753 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:3247 [2025-04-26 18:39:26,753 WARN L145 AmpleReduction]: Times succ was already a loop node:3492 [2025-04-26 18:39:26,753 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:187 [2025-04-26 18:39:26,753 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:39:26,771 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 5066 states, 5064 states have (on average 2.800750394944708) internal successors, (in total 14183), 5065 states have internal predecessors, (14183), 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 18:39:26,781 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:39:26,781 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:39:26,781 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:39:26,781 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:39:26,781 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:39:26,781 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:39:26,781 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:39:26,781 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:39:26,793 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 5066 states, 5064 states have (on average 2.800750394944708) internal successors, (in total 14183), 5065 states have internal predecessors, (14183), 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 18:39:26,915 INFO L131 ngComponentsAnalysis]: Automaton has 954 accepting balls. 3075 [2025-04-26 18:39:26,916 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:39:26,916 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:39:26,920 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 18:39:26,921 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:39:26,921 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:39:26,929 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 5066 states, 5064 states have (on average 2.800750394944708) internal successors, (in total 14183), 5065 states have internal predecessors, (14183), 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 18:39:26,991 INFO L131 ngComponentsAnalysis]: Automaton has 954 accepting balls. 3075 [2025-04-26 18:39:26,992 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:39:26,992 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:39:26,992 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 18:39:26,992 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:39:26,997 INFO L752 eck$LassoCheckResult]: Stem: "[98] $Ultimate##0-->$Ultimate##0: Formula: (= v_computeMinThread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{computeMinThread1of1ForFork0_x=v_computeMinThread1of1ForFork0_x_2, computeMinThread1of1ForFork0_thidvar0=v_computeMinThread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[computeMinThread1of1ForFork0_x, computeMinThread1of1ForFork0_thidvar0]" "[84] $Ultimate##0-->L33: Formula: (= v_array_min_6 0) InVars {} OutVars{array_min=v_array_min_6} AuxVars[] AssignedVars[array_min]" "[85] L33-->L36-1: Formula: (= v_i1_7 0) InVars {} OutVars{i1=v_i1_7} AuxVars[] AssignedVars[i1]" [2025-04-26 18:39:26,997 INFO L754 eck$LassoCheckResult]: Loop: "[87] L36-1-->L36: Formula: (< v_i1_2 v_N_3) InVars {i1=v_i1_2, N=v_N_3} OutVars{i1=v_i1_2, N=v_N_3} AuxVars[] AssignedVars[]" "[89] L36-->L36-1: Formula: (and (= (+ v_i1_9 1) v_i1_8) (= v_array_min_7 (let ((.cse0 (select v_A_5 v_i1_9))) (ite (< v_array_min_8 .cse0) v_array_min_8 .cse0)))) InVars {A=v_A_5, i1=v_i1_9, array_min=v_array_min_8} OutVars{A=v_A_5, i1=v_i1_8, array_min=v_array_min_7} AuxVars[] AssignedVars[array_min, i1]" [2025-04-26 18:39:27,002 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash 126658, now seen corresponding path program 1 times [2025-04-26 18:39:27,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:39:27,007 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32215831] [2025-04-26 18:39:27,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:39:27,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:39:27,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:39:27,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:39:27,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:27,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:27,056 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:39:27,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:39:27,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:39:27,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:27,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:27,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:39:27,076 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:27,076 INFO L85 PathProgramCache]: Analyzing trace with hash 3747, now seen corresponding path program 1 times [2025-04-26 18:39:27,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:39:27,076 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678818877] [2025-04-26 18:39:27,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:39:27,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:39:27,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:39:27,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:39:27,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:27,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:27,087 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:39:27,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:39:27,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:39:27,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:27,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:27,096 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:39:27,097 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash 121721124, now seen corresponding path program 1 times [2025-04-26 18:39:27,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:39:27,097 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341535608] [2025-04-26 18:39:27,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:39:27,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:39:27,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:39:27,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:39:27,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:27,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:27,109 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:39:27,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:39:27,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:39:27,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:27,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:27,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:39:27,295 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:39:27,296 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:39:27,296 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:39:27,296 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:39:27,296 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:39:27,296 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:39:27,296 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:39:27,296 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:39:27,296 INFO L132 ssoRankerPreferences]: Filename of dumped script: min2-max2-sample.bpl_petrified1_Iteration1_Lasso [2025-04-26 18:39:27,296 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:39:27,297 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:39:27,307 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:27,313 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:27,315 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:27,458 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:39:27,461 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:39:27,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:39:27,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:39:27,465 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 18:39:27,467 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 18:39:27,469 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 18:39:27,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:39:27,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:39:27,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:39:27,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:39:27,485 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:39:27,486 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:39:27,490 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:39:27,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 18:39:27,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:39:27,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:39:27,499 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 18:39:27,500 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 18:39:27,501 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 18:39:27,512 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:39:27,512 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:39:27,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:39:27,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:39:27,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:39:27,513 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:39:27,513 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:39:27,514 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:39:27,520 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 18:39:27,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:39:27,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:39:27,522 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 18:39:27,524 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 18:39:27,526 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 18:39:27,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:39:27,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:39:27,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:39:27,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:39:27,543 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:39:27,543 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:39:27,548 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:39:27,558 INFO L436 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-04-26 18:39:27,558 INFO L437 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2025-04-26 18:39:27,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:39:27,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:39:27,561 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 18:39:27,563 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 18:39:27,564 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:39:27,581 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 18:39:27,581 INFO L439 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2025-04-26 18:39:27,581 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:39:27,581 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, N) = -1*i1 + 1*N Supporting invariants [] [2025-04-26 18:39:27,587 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 18:39:27,590 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:39:27,610 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:27,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:39:27,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:39:27,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:27,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:39:27,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:39:27,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:39:27,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:39:27,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:39:27,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:27,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:39:27,634 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:39:27,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:39:27,649 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 18:39:27,665 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 18:39:27,674 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 5066 states, 5064 states have (on average 2.800750394944708) internal successors, (in total 14183), 5065 states have internal predecessors, (14183), 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 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 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 18:39:28,034 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 5066 states, 5064 states have (on average 2.800750394944708) internal successors, (in total 14183), 5065 states have internal predecessors, (14183), 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 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 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 17880 states and 53744 transitions. Complement of second has 8 states. [2025-04-26 18:39:28,036 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 18:39:28,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 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 18:39:28,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2025-04-26 18:39:28,047 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 154 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 18:39:28,048 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:39:28,048 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 154 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 18:39:28,048 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:39:28,048 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 154 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 18:39:28,048 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:39:28,049 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17880 states and 53744 transitions. [2025-04-26 18:39:28,305 INFO L131 ngComponentsAnalysis]: Automaton has 1437 accepting balls. 4093 [2025-04-26 18:39:28,551 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17880 states to 14252 states and 43974 transitions. [2025-04-26 18:39:28,553 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8397 [2025-04-26 18:39:28,585 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10514 [2025-04-26 18:39:28,586 INFO L74 IsDeterministic]: Start isDeterministic. Operand 14252 states and 43974 transitions. [2025-04-26 18:39:28,587 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:39:28,587 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14252 states and 43974 transitions. [2025-04-26 18:39:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14252 states and 43974 transitions. [2025-04-26 18:39:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14252 to 11433. [2025-04-26 18:39:29,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11433 states, 11433 states have (on average 3.207119741100324) internal successors, (in total 36667), 11432 states have internal predecessors, (36667), 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 18:39:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11433 states to 11433 states and 36667 transitions. [2025-04-26 18:39:29,059 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11433 states and 36667 transitions. [2025-04-26 18:39:29,059 INFO L438 stractBuchiCegarLoop]: Abstraction has 11433 states and 36667 transitions. [2025-04-26 18:39:29,059 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:39:29,059 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11433 states and 36667 transitions. [2025-04-26 18:39:29,151 INFO L131 ngComponentsAnalysis]: Automaton has 1291 accepting balls. 3776 [2025-04-26 18:39:29,151 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:39:29,151 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:39:29,152 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 18:39:29,152 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:39:29,152 INFO L752 eck$LassoCheckResult]: Stem: "[98] $Ultimate##0-->$Ultimate##0: Formula: (= v_computeMinThread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{computeMinThread1of1ForFork0_x=v_computeMinThread1of1ForFork0_x_2, computeMinThread1of1ForFork0_thidvar0=v_computeMinThread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[computeMinThread1of1ForFork0_x, computeMinThread1of1ForFork0_thidvar0]" "[101] L69-->$Ultimate##0: Formula: (and (= v_computeMinThread1of1ForFork1_thidvar0_2 2) (= v_computeMinThread1of1ForFork1_thidvar1_2 2)) InVars {} OutVars{computeMinThread1of1ForFork1_x=v_computeMinThread1of1ForFork1_x_2, computeMinThread1of1ForFork1_thidvar0=v_computeMinThread1of1ForFork1_thidvar0_2, computeMinThread1of1ForFork1_thidvar1=v_computeMinThread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[computeMinThread1of1ForFork1_x, computeMinThread1of1ForFork1_thidvar0, computeMinThread1of1ForFork1_thidvar1]" "[90] $Ultimate##0-->L33: Formula: (= v_array_min_6 0) InVars {} OutVars{array_min=v_array_min_6} AuxVars[] AssignedVars[array_min]" "[91] L33-->L36-1: Formula: (= v_i1_7 0) InVars {} OutVars{i1=v_i1_7} AuxVars[] AssignedVars[i1]" [2025-04-26 18:39:29,153 INFO L754 eck$LassoCheckResult]: Loop: "[93] L36-1-->L36: Formula: (< v_i1_2 v_N_3) InVars {i1=v_i1_2, N=v_N_3} OutVars{i1=v_i1_2, N=v_N_3} AuxVars[] AssignedVars[]" "[95] L36-->L36-1: Formula: (and (= (+ v_i1_9 1) v_i1_8) (= v_array_min_7 (let ((.cse0 (select v_A_5 v_i1_9))) (ite (< v_array_min_8 .cse0) v_array_min_8 .cse0)))) InVars {A=v_A_5, i1=v_i1_9, array_min=v_array_min_8} OutVars{A=v_A_5, i1=v_i1_8, array_min=v_array_min_7} AuxVars[] AssignedVars[array_min, i1]" [2025-04-26 18:39:29,153 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash 3942981, now seen corresponding path program 1 times [2025-04-26 18:39:29,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:39:29,153 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15648357] [2025-04-26 18:39:29,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:39:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:39:29,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:39:29,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:39:29,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:29,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:29,160 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:39:29,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:39:29,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:39:29,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:29,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:29,166 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:39:29,166 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:29,166 INFO L85 PathProgramCache]: Analyzing trace with hash 3939, now seen corresponding path program 1 times [2025-04-26 18:39:29,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:39:29,166 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438458328] [2025-04-26 18:39:29,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:39:29,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:39:29,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:39:29,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:39:29,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:29,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:29,171 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:39:29,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:39:29,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:39:29,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:29,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:29,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:39:29,174 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:29,174 INFO L85 PathProgramCache]: Analyzing trace with hash -505759577, now seen corresponding path program 1 times [2025-04-26 18:39:29,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:39:29,175 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702333856] [2025-04-26 18:39:29,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:39:29,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:39:29,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:39:29,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:39:29,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:29,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:29,179 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:39:29,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:39:29,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:39:29,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:29,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:29,191 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:39:29,260 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:39:29,260 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:39:29,261 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:39:29,261 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:39:29,261 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:39:29,261 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:39:29,261 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:39:29,261 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:39:29,261 INFO L132 ssoRankerPreferences]: Filename of dumped script: min2-max2-sample.bpl_petrified1_Iteration2_Lasso [2025-04-26 18:39:29,261 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:39:29,261 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:39:29,262 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:29,296 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:29,300 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:29,302 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:29,306 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:29,309 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:29,401 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:39:29,401 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:39:29,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:39:29,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:39:29,403 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 18:39:29,404 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 18:39:29,406 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 18:39:29,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:39:29,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:39:29,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:39:29,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:39:29,419 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:39:29,419 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:39:29,424 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:39:29,431 INFO L436 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-04-26 18:39:29,431 INFO L437 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2025-04-26 18:39:29,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:39:29,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:39:29,433 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 18:39:29,435 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 18:39:29,436 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:39:29,456 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 18:39:29,456 INFO L439 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2025-04-26 18:39:29,456 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:39:29,456 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, N) = -1*i1 + 1*N Supporting invariants [] [2025-04-26 18:39:29,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 18:39:29,463 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:39:29,479 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:29,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:39:29,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:39:29,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:29,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:39:29,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:39:29,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:39:29,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:39:29,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:39:29,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:29,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:39:29,495 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:39:29,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:39:29,507 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 18:39:29,507 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 18:39:29,508 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11433 states and 36667 transitions. cyclomatic complexity: 27016 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:39:29,896 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11433 states and 36667 transitions. cyclomatic complexity: 27016. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 22383 states and 71070 transitions. Complement of second has 8 states. [2025-04-26 18:39:29,896 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 18:39:29,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:39:29,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2025-04-26 18:39:29,897 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 152 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 18:39:29,897 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:39:29,897 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 152 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 18:39:29,897 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:39:29,897 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 152 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 18:39:29,897 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:39:29,897 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22383 states and 71070 transitions. [2025-04-26 18:39:30,181 INFO L131 ngComponentsAnalysis]: Automaton has 1462 accepting balls. 3588 [2025-04-26 18:39:30,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22383 states to 18908 states and 61682 transitions. [2025-04-26 18:39:30,336 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9400 [2025-04-26 18:39:30,363 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11397 [2025-04-26 18:39:30,364 INFO L74 IsDeterministic]: Start isDeterministic. Operand 18908 states and 61682 transitions. [2025-04-26 18:39:30,364 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:39:30,364 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18908 states and 61682 transitions. [2025-04-26 18:39:30,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18908 states and 61682 transitions. [2025-04-26 18:39:30,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18908 to 10857. [2025-04-26 18:39:30,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10857 states, 10857 states have (on average 3.4590586718246294) internal successors, (in total 37555), 10856 states have internal predecessors, (37555), 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 18:39:30,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10857 states to 10857 states and 37555 transitions. [2025-04-26 18:39:30,727 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10857 states and 37555 transitions. [2025-04-26 18:39:30,727 INFO L438 stractBuchiCegarLoop]: Abstraction has 10857 states and 37555 transitions. [2025-04-26 18:39:30,727 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:39:30,727 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10857 states and 37555 transitions. [2025-04-26 18:39:30,786 INFO L131 ngComponentsAnalysis]: Automaton has 993 accepting balls. 2460 [2025-04-26 18:39:30,786 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:39:30,786 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:39:30,786 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 18:39:30,786 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:39:30,787 INFO L752 eck$LassoCheckResult]: Stem: "[98] $Ultimate##0-->$Ultimate##0: Formula: (= v_computeMinThread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{computeMinThread1of1ForFork0_x=v_computeMinThread1of1ForFork0_x_2, computeMinThread1of1ForFork0_thidvar0=v_computeMinThread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[computeMinThread1of1ForFork0_x, computeMinThread1of1ForFork0_thidvar0]" "[101] L69-->$Ultimate##0: Formula: (and (= v_computeMinThread1of1ForFork1_thidvar0_2 2) (= v_computeMinThread1of1ForFork1_thidvar1_2 2)) InVars {} OutVars{computeMinThread1of1ForFork1_x=v_computeMinThread1of1ForFork1_x_2, computeMinThread1of1ForFork1_thidvar0=v_computeMinThread1of1ForFork1_thidvar0_2, computeMinThread1of1ForFork1_thidvar1=v_computeMinThread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[computeMinThread1of1ForFork1_x, computeMinThread1of1ForFork1_thidvar0, computeMinThread1of1ForFork1_thidvar1]" "[104] L70-->$Ultimate##0: Formula: (and (= v_computeMaxThread1of1ForFork2_thidvar2_2 3) (= v_computeMaxThread1of1ForFork2_thidvar0_2 3) (= v_computeMaxThread1of1ForFork2_thidvar1_2 3)) InVars {} OutVars{computeMaxThread1of1ForFork2_y=v_computeMaxThread1of1ForFork2_y_2, computeMaxThread1of1ForFork2_thidvar2=v_computeMaxThread1of1ForFork2_thidvar2_2, computeMaxThread1of1ForFork2_thidvar1=v_computeMaxThread1of1ForFork2_thidvar1_2, computeMaxThread1of1ForFork2_thidvar0=v_computeMaxThread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[computeMaxThread1of1ForFork2_y, computeMaxThread1of1ForFork2_thidvar2, computeMaxThread1of1ForFork2_thidvar1, computeMaxThread1of1ForFork2_thidvar0]" "[75] $Ultimate##0-->L47: Formula: (= v_array_max_1 0) InVars {} OutVars{array_max=v_array_max_1} AuxVars[] AssignedVars[array_max]" "[76] L47-->L50-1: Formula: (= v_i2_1 0) InVars {} OutVars{i2=v_i2_1} AuxVars[] AssignedVars[i2]" [2025-04-26 18:39:30,787 INFO L754 eck$LassoCheckResult]: Loop: "[78] L50-1-->L50: Formula: (< v_i2_2 v_N_1) InVars {i2=v_i2_2, N=v_N_1} OutVars{i2=v_i2_2, N=v_N_1} AuxVars[] AssignedVars[]" "[80] L50-->L50-1: Formula: (and (= v_i2_8 (+ v_i2_9 1)) (= v_array_max_7 (let ((.cse0 (select v_A_3 v_i2_9))) (ite (< v_array_max_8 .cse0) .cse0 v_array_max_8)))) InVars {A=v_A_3, array_max=v_array_max_8, i2=v_i2_9} OutVars{A=v_A_3, array_max=v_array_max_7, i2=v_i2_8} AuxVars[] AssignedVars[array_max, i2]" [2025-04-26 18:39:30,787 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:30,788 INFO L85 PathProgramCache]: Analyzing trace with hash 122245445, now seen corresponding path program 1 times [2025-04-26 18:39:30,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:39:30,788 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613609287] [2025-04-26 18:39:30,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:39:30,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:39:30,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:39:30,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:39:30,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:30,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:30,794 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:39:30,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:39:30,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:39:30,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:30,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:30,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:39:30,800 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash 3459, now seen corresponding path program 1 times [2025-04-26 18:39:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:39:30,800 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995412158] [2025-04-26 18:39:30,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:39:30,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:39:30,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:39:30,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:39:30,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:30,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:30,804 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:39:30,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:39:30,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:39:30,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:30,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:30,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:39:30,810 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:30,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1513758151, now seen corresponding path program 1 times [2025-04-26 18:39:30,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:39:30,811 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017137101] [2025-04-26 18:39:30,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:39:30,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:39:30,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:39:30,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:39:30,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:30,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:30,819 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:39:30,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:39:30,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:39:30,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:30,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:30,828 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:39:30,912 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:39:30,913 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:39:30,913 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:39:30,913 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:39:30,913 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:39:30,913 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:39:30,913 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:39:30,913 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:39:30,913 INFO L132 ssoRankerPreferences]: Filename of dumped script: min2-max2-sample.bpl_petrified1_Iteration3_Lasso [2025-04-26 18:39:30,913 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:39:30,913 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:39:30,914 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:30,951 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:30,953 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:30,955 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:30,959 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:30,961 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:30,963 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:30,965 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:30,968 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:30,972 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:39:31,143 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:39:31,143 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:39:31,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:39:31,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:39:31,150 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 18:39:31,151 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 18:39:31,152 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 18:39:31,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:39:31,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:39:31,163 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2025-04-26 18:39:31,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:39:31,170 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2025-04-26 18:39:31,170 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2025-04-26 18:39:31,194 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:39:31,200 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 18:39:31,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:39:31,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:39:31,207 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 18:39:31,209 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 18:39:31,209 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 18:39:31,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:39:31,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:39:31,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:39:31,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:39:31,232 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:39:31,233 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:39:31,242 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:39:31,261 INFO L436 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2025-04-26 18:39:31,261 INFO L437 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2025-04-26 18:39:31,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:39:31,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:39:31,266 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 18:39:31,268 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 18:39:31,272 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:39:31,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 18:39:31,299 INFO L439 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2025-04-26 18:39:31,299 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:39:31,299 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(i2, N) = -1*i2 + 1*N Supporting invariants [] [2025-04-26 18:39:31,309 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 18:39:31,310 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:39:31,329 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:31,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:39:31,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:39:31,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:31,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:39:31,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:39:31,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:39:31,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:39:31,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:39:31,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:31,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:39:31,352 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:39:31,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:39:31,365 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 18:39:31,365 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 18:39:31,366 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10857 states and 37555 transitions. cyclomatic complexity: 28292 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:39:31,909 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10857 states and 37555 transitions. cyclomatic complexity: 28292. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 41753 states and 141738 transitions. Complement of second has 8 states. [2025-04-26 18:39:31,909 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 18:39:31,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:39:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2025-04-26 18:39:31,910 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 151 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 18:39:31,911 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:39:31,911 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 151 transitions. Stem has 7 letters. Loop has 2 letters. [2025-04-26 18:39:31,911 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:39:31,911 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 151 transitions. Stem has 5 letters. Loop has 4 letters. [2025-04-26 18:39:31,911 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:39:31,911 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41753 states and 141738 transitions. [2025-04-26 18:39:32,456 INFO L131 ngComponentsAnalysis]: Automaton has 1345 accepting balls. 3060 [2025-04-26 18:39:32,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41753 states to 29496 states and 104191 transitions. [2025-04-26 18:39:32,698 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10645 [2025-04-26 18:39:32,723 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12677 [2025-04-26 18:39:32,723 INFO L74 IsDeterministic]: Start isDeterministic. Operand 29496 states and 104191 transitions. [2025-04-26 18:39:32,723 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:39:32,724 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29496 states and 104191 transitions. [2025-04-26 18:39:32,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29496 states and 104191 transitions. [2025-04-26 18:39:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29496 to 24843. [2025-04-26 18:39:33,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24843 states, 24843 states have (on average 3.5695366904158115) internal successors, (in total 88678), 24842 states have internal predecessors, (88678), 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 18:39:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24843 states to 24843 states and 88678 transitions. [2025-04-26 18:39:33,351 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24843 states and 88678 transitions. [2025-04-26 18:39:33,351 INFO L438 stractBuchiCegarLoop]: Abstraction has 24843 states and 88678 transitions. [2025-04-26 18:39:33,351 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 18:39:33,352 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24843 states and 88678 transitions. [2025-04-26 18:39:33,576 INFO L131 ngComponentsAnalysis]: Automaton has 1215 accepting balls. 2800 [2025-04-26 18:39:33,576 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:39:33,576 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:39:33,577 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 18:39:33,577 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:39:33,577 INFO L752 eck$LassoCheckResult]: Stem: "[98] $Ultimate##0-->$Ultimate##0: Formula: (= v_computeMinThread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{computeMinThread1of1ForFork0_x=v_computeMinThread1of1ForFork0_x_2, computeMinThread1of1ForFork0_thidvar0=v_computeMinThread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[computeMinThread1of1ForFork0_x, computeMinThread1of1ForFork0_thidvar0]" "[101] L69-->$Ultimate##0: Formula: (and (= v_computeMinThread1of1ForFork1_thidvar0_2 2) (= v_computeMinThread1of1ForFork1_thidvar1_2 2)) InVars {} OutVars{computeMinThread1of1ForFork1_x=v_computeMinThread1of1ForFork1_x_2, computeMinThread1of1ForFork1_thidvar0=v_computeMinThread1of1ForFork1_thidvar0_2, computeMinThread1of1ForFork1_thidvar1=v_computeMinThread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[computeMinThread1of1ForFork1_x, computeMinThread1of1ForFork1_thidvar0, computeMinThread1of1ForFork1_thidvar1]" "[104] L70-->$Ultimate##0: Formula: (and (= v_computeMaxThread1of1ForFork2_thidvar2_2 3) (= v_computeMaxThread1of1ForFork2_thidvar0_2 3) (= v_computeMaxThread1of1ForFork2_thidvar1_2 3)) InVars {} OutVars{computeMaxThread1of1ForFork2_y=v_computeMaxThread1of1ForFork2_y_2, computeMaxThread1of1ForFork2_thidvar2=v_computeMaxThread1of1ForFork2_thidvar2_2, computeMaxThread1of1ForFork2_thidvar1=v_computeMaxThread1of1ForFork2_thidvar1_2, computeMaxThread1of1ForFork2_thidvar0=v_computeMaxThread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[computeMaxThread1of1ForFork2_y, computeMaxThread1of1ForFork2_thidvar2, computeMaxThread1of1ForFork2_thidvar1, computeMaxThread1of1ForFork2_thidvar0]" "[107] L71-->$Ultimate##0: Formula: (and (= v_computeMaxThread1of1ForFork3_thidvar0_2 4) (= v_computeMaxThread1of1ForFork3_thidvar3_2 4) (= v_computeMaxThread1of1ForFork3_thidvar2_2 4) (= v_computeMaxThread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{computeMaxThread1of1ForFork3_thidvar3=v_computeMaxThread1of1ForFork3_thidvar3_2, computeMaxThread1of1ForFork3_y=v_computeMaxThread1of1ForFork3_y_2, computeMaxThread1of1ForFork3_thidvar1=v_computeMaxThread1of1ForFork3_thidvar1_2, computeMaxThread1of1ForFork3_thidvar2=v_computeMaxThread1of1ForFork3_thidvar2_2, computeMaxThread1of1ForFork3_thidvar0=v_computeMaxThread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[computeMaxThread1of1ForFork3_thidvar3, computeMaxThread1of1ForFork3_y, computeMaxThread1of1ForFork3_thidvar1, computeMaxThread1of1ForFork3_thidvar2, computeMaxThread1of1ForFork3_thidvar0]" "[110] L72-->L60: Formula: (and (= 5 v_sampleThread1of1ForFork4_thidvar0_2) (= 5 v_sampleThread1of1ForFork4_thidvar1_2) (= 5 v_sampleThread1of1ForFork4_thidvar2_2) (= 5 v_sampleThread1of1ForFork4_thidvar4_2) (= 5 v_sampleThread1of1ForFork4_thidvar3_2)) InVars {} OutVars{sampleThread1of1ForFork4_thidvar4=v_sampleThread1of1ForFork4_thidvar4_2, sampleThread1of1ForFork4_thidvar3=v_sampleThread1of1ForFork4_thidvar3_2, sampleThread1of1ForFork4_thidvar2=v_sampleThread1of1ForFork4_thidvar2_2, sampleThread1of1ForFork4_thidvar1=v_sampleThread1of1ForFork4_thidvar1_2, sampleThread1of1ForFork4_thidvar0=v_sampleThread1of1ForFork4_thidvar0_2} AuxVars[] AssignedVars[sampleThread1of1ForFork4_thidvar4, sampleThread1of1ForFork4_thidvar3, sampleThread1of1ForFork4_thidvar2, sampleThread1of1ForFork4_thidvar1, sampleThread1of1ForFork4_thidvar0]" [2025-04-26 18:39:33,577 INFO L754 eck$LassoCheckResult]: Loop: "[82] L60-->L62: Formula: (= v_min_samples_1 (store v_min_samples_2 (+ (- 1) v_i1_1) v_array_min_3)) InVars {min_samples=v_min_samples_2, i1=v_i1_1, array_min=v_array_min_3} OutVars{min_samples=v_min_samples_1, i1=v_i1_1, array_min=v_array_min_3} AuxVars[] AssignedVars[min_samples]" "[83] L62-->L60: Formula: (= (store v_max_samples_2 (+ (- 1) v_i2_7) v_array_max_6) v_max_samples_1) InVars {array_max=v_array_max_6, i2=v_i2_7, max_samples=v_max_samples_2} OutVars{array_max=v_array_max_6, i2=v_i2_7, max_samples=v_max_samples_1} AuxVars[] AssignedVars[max_samples]" [2025-04-26 18:39:33,577 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:33,577 INFO L85 PathProgramCache]: Analyzing trace with hash 122246471, now seen corresponding path program 1 times [2025-04-26 18:39:33,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:39:33,578 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572381100] [2025-04-26 18:39:33,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:39:33,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:39:33,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:39:33,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:39:33,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:33,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:33,582 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:39:33,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:39:33,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:39:33,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:33,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:33,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:39:33,585 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:33,585 INFO L85 PathProgramCache]: Analyzing trace with hash 3586, now seen corresponding path program 1 times [2025-04-26 18:39:33,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:39:33,585 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235600208] [2025-04-26 18:39:33,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:39:33,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:39:33,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:39:33,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:39:33,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:33,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:33,593 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:39:33,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:39:33,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:39:33,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:33,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:33,601 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:39:33,601 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:39:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1514744264, now seen corresponding path program 1 times [2025-04-26 18:39:33,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:39:33,601 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283182658] [2025-04-26 18:39:33,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:39:33,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:39:33,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:39:33,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:39:33,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:33,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:33,609 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:39:33,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:39:33,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:39:33,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:33,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:33,614 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:39:33,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:39:33,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:39:33,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:33,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:33,735 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:39:33,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:39:33,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:39:33,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:39:33,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:39:33,758 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 18:39:33,766 INFO L201 PluginConnector]: Adding new model min2-max2-sample.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:39:33 BoogieIcfgContainer [2025-04-26 18:39:33,766 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:39:33,769 INFO L158 Benchmark]: Toolchain (without parser) took 8640.71ms. Allocated memory was 159.4MB in the beginning and 813.7MB in the end (delta: 654.3MB). Free memory was 85.4MB in the beginning and 293.1MB in the end (delta: -207.7MB). Peak memory consumption was 451.8MB. Max. memory is 8.0GB. [2025-04-26 18:39:33,769 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.68ms. Allocated memory is still 159.4MB. Free memory was 86.5MB in the beginning and 86.3MB in the end (delta: 199.3kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:39:33,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.80ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 83.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:39:33,769 INFO L158 Benchmark]: Boogie Preprocessor took 26.05ms. Allocated memory is still 159.4MB. Free memory was 83.5MB in the beginning and 82.5MB in the end (delta: 961.0kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 18:39:33,770 INFO L158 Benchmark]: RCFGBuilder took 193.82ms. Allocated memory is still 159.4MB. Free memory was 82.5MB in the beginning and 72.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 18:39:33,770 INFO L158 Benchmark]: BuchiAutomizer took 8372.63ms. Allocated memory was 159.4MB in the beginning and 813.7MB in the end (delta: 654.3MB). Free memory was 72.7MB in the beginning and 293.1MB in the end (delta: -220.4MB). Peak memory consumption was 439.3MB. Max. memory is 8.0GB. [2025-04-26 18:39:33,771 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 0.68ms. Allocated memory is still 159.4MB. Free memory was 86.5MB in the beginning and 86.3MB in the end (delta: 199.3kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.80ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 83.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 26.05ms. Allocated memory is still 159.4MB. Free memory was 83.5MB in the beginning and 82.5MB in the end (delta: 961.0kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 193.82ms. Allocated memory is still 159.4MB. Free memory was 82.5MB in the beginning and 72.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 8372.63ms. Allocated memory was 159.4MB in the beginning and 813.7MB in the end (delta: 654.3MB). Free memory was 72.7MB in the beginning and 293.1MB in the end (delta: -220.4MB). Peak memory consumption was 439.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.2s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 3. Automata minimization 1.5s AutomataMinimizationTime, 3 MinimizatonAttempts, 15523 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 1.7s 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, 251 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248 mSDsluCounter, 254 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 115 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 297 IncrementalHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 139 mSDtfsCounter, 297 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital51 mio100 ax100 hnf100 lsp123 ukn54 mio100 lsp58 div100 bol100 ite100 ukn100 eq160 hnf100 smp100 dnf162 smp57 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 51ms VariablesStem: 1 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 1.2s InitialAbstraction: Time to compute Ample Reduction [ms]: 1251, Number of transitions in reduction automaton: 14183, Number of states in reduction automaton: 5066, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 3 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function N + -1 * i1 and consists of 5 locations. One deterministic module has affine ranking function N + -1 * i1 and consists of 5 locations. One deterministic module has affine ranking function -1 * i2 + N and consists of 5 locations. The remainder module has 24843 locations. - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 60]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L69] FORK 0 fork 1 computeMin(); [L70] FORK 0 fork 2, 2 computeMin(); [L71] FORK 0 fork 3, 3, 3 computeMax(); [L72] FORK 0 fork 4, 4, 4, 4 computeMax(); [L73] FORK 0 fork 5, 5, 5, 5, 5 sample(); Loop: [L61] min_samples[i1 - 1] := array_min; [L62] max_samples[i2 - 1] := array_max; End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 60]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L69] FORK 0 fork 1 computeMin(); [L70] FORK 0 fork 2, 2 computeMin(); [L71] FORK 0 fork 3, 3, 3 computeMax(); [L72] FORK 0 fork 4, 4, 4, 4 computeMax(); [L73] FORK 0 fork 5, 5, 5, 5, 5 sample(); Loop: [L61] min_samples[i1 - 1] := array_min; [L62] max_samples[i2 - 1] := array_max; End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2025-04-26 18:39:33,785 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...