/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/Termination.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/3_thr/lock3.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:42:33,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:42:33,326 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:42:33,332 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:42:33,332 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:42:33,332 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:42:33,332 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:42:33,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:42:33,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:42:33,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:42:33,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:42:33,357 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:42:33,357 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:42:33,358 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:42:33,358 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:42:33,358 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:42:33,358 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:42:33,358 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:42:33,358 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:42:33,358 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:42:33,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:42:33,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:42:33,358 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:42:33,358 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:42:33,358 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:42:33,358 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:42:33,359 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:33,359 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:42:33,359 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:42:33,359 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:42:33,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:42:33,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:42:33,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:42:33,600 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:42:33,600 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:42:33,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/3_thr/lock3.c.bpl [2025-04-26 18:42:33,603 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/3_thr/lock3.c.bpl' [2025-04-26 18:42:33,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:42:33,619 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:42:33,620 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:33,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:42:33,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:42:33,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:33" (1/1) ... [2025-04-26 18:42:33,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:33" (1/1) ... [2025-04-26 18:42:33,653 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:42:33,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:33,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:42:33,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:42:33,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:42:33,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:33" (1/1) ... [2025-04-26 18:42:33,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:33" (1/1) ... [2025-04-26 18:42:33,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:33" (1/1) ... [2025-04-26 18:42:33,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:33" (1/1) ... [2025-04-26 18:42:33,664 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:33" (1/1) ... [2025-04-26 18:42:33,665 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:33" (1/1) ... [2025-04-26 18:42:33,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:33" (1/1) ... [2025-04-26 18:42:33,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:33" (1/1) ... [2025-04-26 18:42:33,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:33" (1/1) ... [2025-04-26 18:42:33,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:42:33,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:42:33,676 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:42:33,676 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:42:33,677 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:33" (1/1) ... [2025-04-26 18:42:33,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:33,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:33,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:33,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 18:42:33,726 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:42:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:42:33,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:42:33,726 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:42:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:42:33,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:42:33,727 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 18:42:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 18:42:33,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 18:42:33,727 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:42:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:42:33,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:42:33,727 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 18:42:33,759 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:42:33,761 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:42:33,825 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:42:33,825 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:42:33,835 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:42:33,836 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:42:33,836 INFO L201 PluginConnector]: Adding new model lock3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:33 BoogieIcfgContainer [2025-04-26 18:42:33,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:42:33,837 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:42:33,837 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:42:33,840 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:42:33,841 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:33,841 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:33" (1/2) ... [2025-04-26 18:42:33,842 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65028ae5 and model type lock3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:42:33, skipping insertion in model container [2025-04-26 18:42:33,842 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:33,842 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "lock3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:33" (2/2) ... [2025-04-26 18:42:33,843 INFO L376 chiAutomizerObserver]: Analyzing ICFG lock3.c.bpl [2025-04-26 18:42:33,889 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-26 18:42:33,923 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:42:33,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:42:33,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:33,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:33,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 18:42:33,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 34 transitions, 89 flow [2025-04-26 18:42:33,988 INFO L116 PetriNetUnfolderBase]: 3/28 cut-off events. [2025-04-26 18:42:33,992 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-26 18:42:33,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 3/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-04-26 18:42:33,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 34 transitions, 89 flow [2025-04-26 18:42:34,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 28 transitions, 74 flow [2025-04-26 18:42:34,002 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 35 places, 28 transitions, 74 flow [2025-04-26 18:42:34,003 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 28 transitions, 74 flow [2025-04-26 18:42:34,048 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 458 states, 457 states have (on average 2.962800875273523) internal successors, (in total 1354), 457 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:34,049 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 458 states, 457 states have (on average 2.962800875273523) internal successors, (in total 1354), 457 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:34,053 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:42:34,266 WARN L140 AmpleReduction]: Number of pruned transitions: 420 [2025-04-26 18:42:34,267 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:42:34,267 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 37 [2025-04-26 18:42:34,267 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:84 [2025-04-26 18:42:34,267 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:230 [2025-04-26 18:42:34,267 WARN L145 AmpleReduction]: Times succ was already a loop node:53 [2025-04-26 18:42:34,267 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:47 [2025-04-26 18:42:34,267 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:42:34,268 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 352 states, 351 states have (on average 1.7179487179487178) internal successors, (in total 603), 351 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:34,277 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:42:34,277 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:42:34,277 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:42:34,277 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:42:34,278 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:42:34,278 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:42:34,278 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:42:34,278 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:42:34,281 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 352 states, 351 states have (on average 1.7179487179487178) internal successors, (in total 603), 351 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:34,301 INFO L131 ngComponentsAnalysis]: Automaton has 58 accepting balls. 217 [2025-04-26 18:42:34,301 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:34,302 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:34,308 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:34,308 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:34,308 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:42:34,309 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 352 states, 351 states have (on average 1.7179487179487178) internal successors, (in total 603), 351 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:34,315 INFO L131 ngComponentsAnalysis]: Automaton has 58 accepting balls. 217 [2025-04-26 18:42:34,316 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:34,316 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:34,316 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:34,316 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:34,320 INFO L752 eck$LassoCheckResult]: Stem: "[97] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[74] $Ultimate##0-->L26: Formula: (and (= v_l_10 0) (< 0 v_l_11)) InVars {l=v_l_11} OutVars{l=v_l_10} AuxVars[] AssignedVars[l]" [2025-04-26 18:42:34,320 INFO L754 eck$LassoCheckResult]: Loop: "[76] L26-->L28: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[78] L28-->L29: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[80] L29-->L26: Formula: (= v_x2_2 (+ v_x2_1 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" [2025-04-26 18:42:34,325 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash 4042, now seen corresponding path program 1 times [2025-04-26 18:42:34,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:34,332 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679213125] [2025-04-26 18:42:34,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:34,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:34,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:34,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:34,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:34,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:34,380 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:34,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:34,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:34,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:34,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:34,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:34,393 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash 105325, now seen corresponding path program 1 times [2025-04-26 18:42:34,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:34,394 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881653392] [2025-04-26 18:42:34,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:34,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:34,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:34,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:34,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:34,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:34,399 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:34,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:34,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:34,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:34,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:34,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:34,403 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:34,403 INFO L85 PathProgramCache]: Analyzing trace with hash 120490756, now seen corresponding path program 1 times [2025-04-26 18:42:34,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:34,403 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175382880] [2025-04-26 18:42:34,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:34,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:34,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:42:34,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:42:34,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:34,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:34,407 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:34,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:42:34,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:42:34,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:34,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:34,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:34,497 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:34,498 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:34,498 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:34,498 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:34,498 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:34,498 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:34,498 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:34,498 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:34,498 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock3.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:34,498 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:34,498 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:34,517 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:34,564 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:34,611 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:34,611 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:34,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:34,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:34,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:34,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 18:42:34,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:34,618 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:34,638 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 18:42:34,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:34,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:34,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:34,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 18:42:34,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:34,643 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:34,709 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:34,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 18:42:34,714 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:34,714 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:34,714 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:34,714 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:34,714 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:34,714 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:34,714 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:34,714 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:34,714 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock3.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:34,714 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:34,714 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:34,715 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:34,722 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:34,753 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:34,756 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:34,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:34,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:34,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:34,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 18:42:34,761 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:34,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:34,772 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:34,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:34,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:34,772 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:34,776 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:34,776 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:34,779 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:34,783 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:42:34,784 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:42:34,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:34,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:34,787 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:34,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 18:42:34,788 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:34,791 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:42:34,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 18:42:34,793 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:34,794 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:34,794 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-04-26 18:42:34,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 18:42:34,802 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:34,824 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:34,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:34,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:34,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:34,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:34,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:34,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:34,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:34,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:34,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:34,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:34,854 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:34,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:34,913 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:42:34,915 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 352 states, 351 states have (on average 1.7179487179487178) internal successors, (in total 603), 351 states have internal predecessors, (603), 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 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 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 18:42:35,048 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 352 states, 351 states have (on average 1.7179487179487178) internal successors, (in total 603), 351 states have internal predecessors, (603), 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 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 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 1019 states and 1882 transitions. Complement of second has 7 states. [2025-04-26 18:42:35,050 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:35,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 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 18:42:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2025-04-26 18:42:35,060 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 64 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 18:42:35,061 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:35,061 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 64 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 18:42:35,061 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:35,061 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 64 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 18:42:35,061 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:35,062 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1019 states and 1882 transitions. [2025-04-26 18:42:35,078 INFO L131 ngComponentsAnalysis]: Automaton has 65 accepting balls. 228 [2025-04-26 18:42:35,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1019 states to 641 states and 1253 transitions. [2025-04-26 18:42:35,091 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 431 [2025-04-26 18:42:35,094 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 521 [2025-04-26 18:42:35,095 INFO L74 IsDeterministic]: Start isDeterministic. Operand 641 states and 1253 transitions. [2025-04-26 18:42:35,095 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:35,095 INFO L218 hiAutomatonCegarLoop]: Abstraction has 641 states and 1253 transitions. [2025-04-26 18:42:35,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states and 1253 transitions. [2025-04-26 18:42:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 472. [2025-04-26 18:42:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 472 states have (on average 2.01271186440678) internal successors, (in total 950), 471 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 950 transitions. [2025-04-26 18:42:35,144 INFO L240 hiAutomatonCegarLoop]: Abstraction has 472 states and 950 transitions. [2025-04-26 18:42:35,144 INFO L438 stractBuchiCegarLoop]: Abstraction has 472 states and 950 transitions. [2025-04-26 18:42:35,144 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:42:35,144 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 472 states and 950 transitions. [2025-04-26 18:42:35,147 INFO L131 ngComponentsAnalysis]: Automaton has 55 accepting balls. 198 [2025-04-26 18:42:35,147 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:35,147 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:35,147 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 18:42:35,147 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:35,148 INFO L752 eck$LassoCheckResult]: Stem: "[97] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[100] L10-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[81] $Ultimate##0-->L42: Formula: (and (= v_l_14 0) (< 0 v_l_15)) InVars {l=v_l_15} OutVars{l=v_l_14} AuxVars[] AssignedVars[l]" [2025-04-26 18:42:35,148 INFO L754 eck$LassoCheckResult]: Loop: "[83] L42-->L44: Formula: (< v_x2_3 v_z_3) InVars {x2=v_x2_3, z=v_z_3} OutVars{x2=v_x2_3, z=v_z_3} AuxVars[] AssignedVars[]" "[85] L44-->L45: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[87] L45-->L42: Formula: (= v_x3_2 (+ v_x3_1 1)) InVars {x3=v_x3_2} OutVars{x3=v_x3_1} AuxVars[] AssignedVars[x3]" [2025-04-26 18:42:35,148 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:35,148 INFO L85 PathProgramCache]: Analyzing trace with hash 126189, now seen corresponding path program 1 times [2025-04-26 18:42:35,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:35,149 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380394224] [2025-04-26 18:42:35,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:35,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:35,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:35,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:35,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,155 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:35,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:35,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:35,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,161 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:35,161 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:35,161 INFO L85 PathProgramCache]: Analyzing trace with hash 112276, now seen corresponding path program 1 times [2025-04-26 18:42:35,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:35,162 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705728938] [2025-04-26 18:42:35,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:35,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:35,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:35,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:35,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,168 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:35,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:35,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:35,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,177 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:35,178 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:35,178 INFO L85 PathProgramCache]: Analyzing trace with hash -535588312, now seen corresponding path program 1 times [2025-04-26 18:42:35,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:35,178 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643751213] [2025-04-26 18:42:35,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:35,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:35,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:35,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:35,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,186 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:35,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:35,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:35,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,190 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:35,212 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:35,212 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:35,212 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:35,212 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:35,212 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:35,213 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,213 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:35,213 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:35,213 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock3.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:35,213 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:35,213 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:35,213 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:35,218 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:35,244 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:35,244 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:35,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,260 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:35,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 18:42:35,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:35,262 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:35,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 18:42:35,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,280 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:35,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 18:42:35,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:35,282 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:35,308 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:35,308 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x3=0} Honda state: {x3=0} Generalized eigenvectors: [{x3=-1}, {x3=1}, {x3=-1}] Lambdas: [2, 2, 1] Nus: [1, 1] [2025-04-26 18:42:35,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 18:42:35,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:35,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 18:42:35,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:35,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:35,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 18:42:35,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,342 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:35,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 18:42:35,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:35,347 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:35,411 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:35,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 18:42:35,416 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:35,416 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:35,416 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:35,416 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:35,416 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:35,416 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,416 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:35,416 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:35,416 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock3.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:35,416 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:35,416 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:35,417 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:35,420 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:35,445 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:35,445 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:35,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,447 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:35,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 18:42:35,449 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:35,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:35,460 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:35,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:35,460 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:35,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:35,461 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:35,461 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:35,464 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:35,469 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 18:42:35,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,472 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:35,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 18:42:35,474 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:35,485 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:35,485 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:35,485 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:35,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:35,485 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:35,486 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:35,486 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:35,489 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:35,493 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:42:35,493 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:42:35,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,495 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:35,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 18:42:35,497 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:35,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:35,501 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:35,501 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:35,501 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-04-26 18:42:35,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 18:42:35,508 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:35,519 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:35,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:35,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:35,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:35,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:35,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:35,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:35,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:35,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:35,531 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:35,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:35,557 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:42:35,557 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 472 states and 950 transitions. cyclomatic complexity: 553 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:35,632 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 472 states and 950 transitions. cyclomatic complexity: 553. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 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 1446 states and 2912 transitions. Complement of second has 7 states. [2025-04-26 18:42:35,632 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2025-04-26 18:42:35,633 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 62 transitions. Stem has 3 letters. Loop has 3 letters. [2025-04-26 18:42:35,636 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:35,637 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 62 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 18:42:35,637 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:35,637 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 62 transitions. Stem has 3 letters. Loop has 6 letters. [2025-04-26 18:42:35,637 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:35,637 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1446 states and 2912 transitions. [2025-04-26 18:42:35,649 INFO L131 ngComponentsAnalysis]: Automaton has 65 accepting balls. 223 [2025-04-26 18:42:35,660 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1446 states to 1120 states and 2309 transitions. [2025-04-26 18:42:35,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 527 [2025-04-26 18:42:35,662 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 620 [2025-04-26 18:42:35,662 INFO L74 IsDeterministic]: Start isDeterministic. Operand 1120 states and 2309 transitions. [2025-04-26 18:42:35,662 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:35,662 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1120 states and 2309 transitions. [2025-04-26 18:42:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states and 2309 transitions. [2025-04-26 18:42:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 865. [2025-04-26 18:42:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 865 states have (on average 2.1491329479768786) internal successors, (in total 1859), 864 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:35,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1859 transitions. [2025-04-26 18:42:35,702 INFO L240 hiAutomatonCegarLoop]: Abstraction has 865 states and 1859 transitions. [2025-04-26 18:42:35,702 INFO L438 stractBuchiCegarLoop]: Abstraction has 865 states and 1859 transitions. [2025-04-26 18:42:35,703 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:42:35,703 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 865 states and 1859 transitions. [2025-04-26 18:42:35,707 INFO L131 ngComponentsAnalysis]: Automaton has 56 accepting balls. 196 [2025-04-26 18:42:35,707 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:35,707 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:35,708 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 18:42:35,708 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:35,708 INFO L752 eck$LassoCheckResult]: Stem: "[97] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[100] L10-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[103] L11-->$Ultimate##0: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[88] $Ultimate##0-->L58: Formula: (and (< 0 v_l_19) (= v_l_18 0)) InVars {l=v_l_19} OutVars{l=v_l_18} AuxVars[] AssignedVars[l]" [2025-04-26 18:42:35,708 INFO L754 eck$LassoCheckResult]: Loop: "[90] L58-->L60: Formula: (< v_x3_4 v_z_6) InVars {x3=v_x3_4, z=v_z_6} OutVars{x3=v_x3_4, z=v_z_6} AuxVars[] AssignedVars[]" "[92] L60-->L61: Formula: (= (+ v_x3_6 1) v_x3_5) InVars {x3=v_x3_6} OutVars{x3=v_x3_5} AuxVars[] AssignedVars[x3]" "[94] L61-->L58: Formula: (= v_x1_6 (+ v_x1_5 1)) InVars {x1=v_x1_6} OutVars{x1=v_x1_5} AuxVars[] AssignedVars[x1]" [2025-04-26 18:42:35,708 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:35,709 INFO L85 PathProgramCache]: Analyzing trace with hash 3912629, now seen corresponding path program 1 times [2025-04-26 18:42:35,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:35,709 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275166224] [2025-04-26 18:42:35,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:35,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:35,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:35,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:35,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,714 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:35,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:35,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:35,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,720 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:35,720 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:35,720 INFO L85 PathProgramCache]: Analyzing trace with hash 119227, now seen corresponding path program 1 times [2025-04-26 18:42:35,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:35,723 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264312388] [2025-04-26 18:42:35,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:35,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:35,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:35,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:35,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,727 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:35,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:35,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:35,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:35,729 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:35,729 INFO L85 PathProgramCache]: Analyzing trace with hash 597102983, now seen corresponding path program 1 times [2025-04-26 18:42:35,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:35,729 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199738206] [2025-04-26 18:42:35,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:35,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:35,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:42:35,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:42:35,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,735 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:35,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:42:35,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:42:35,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:35,740 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:35,762 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:35,762 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:35,762 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:35,762 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:35,762 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:35,762 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,762 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:35,762 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:35,762 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock3.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:42:35,762 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:35,762 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:35,763 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:35,768 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:35,788 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:35,788 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:35,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,790 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:35,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 18:42:35,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:35,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:35,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:35,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,812 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:35,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 18:42:35,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:35,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:35,879 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:35,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:35,884 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:35,884 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:35,884 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:35,884 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:35,884 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:35,885 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,885 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:35,885 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:35,885 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock3.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:42:35,885 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:35,885 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:35,885 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:35,904 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:35,921 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:35,921 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:35,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,923 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:35,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 18:42:35,926 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:35,936 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:35,936 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:35,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:35,937 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:35,937 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:35,937 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:35,937 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:35,939 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:35,942 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:42:35,942 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:42:35,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:35,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,944 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:35,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 18:42:35,946 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:35,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:35,950 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:35,950 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:35,950 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-04-26 18:42:35,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-04-26 18:42:35,959 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:35,974 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:35,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:35,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:35,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:35,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:35,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:35,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:35,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:35,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:35,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:35,993 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:35,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:36,022 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:42:36,023 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 865 states and 1859 transitions. cyclomatic complexity: 1102 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 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 18:42:36,092 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 865 states and 1859 transitions. cyclomatic complexity: 1102. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 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 2327 states and 4699 transitions. Complement of second has 7 states. [2025-04-26 18:42:36,092 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:36,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 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 18:42:36,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2025-04-26 18:42:36,093 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 57 transitions. Stem has 4 letters. Loop has 3 letters. [2025-04-26 18:42:36,093 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:36,094 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 57 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 18:42:36,094 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:36,094 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 57 transitions. Stem has 4 letters. Loop has 6 letters. [2025-04-26 18:42:36,094 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:36,094 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2327 states and 4699 transitions. [2025-04-26 18:42:36,108 INFO L131 ngComponentsAnalysis]: Automaton has 69 accepting balls. 230 [2025-04-26 18:42:36,122 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2327 states to 1849 states and 3799 transitions. [2025-04-26 18:42:36,123 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 615 [2025-04-26 18:42:36,124 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 687 [2025-04-26 18:42:36,124 INFO L74 IsDeterministic]: Start isDeterministic. Operand 1849 states and 3799 transitions. [2025-04-26 18:42:36,124 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:36,124 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1849 states and 3799 transitions. [2025-04-26 18:42:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states and 3799 transitions. [2025-04-26 18:42:36,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1529. [2025-04-26 18:42:36,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1529 states have (on average 2.1308044473512098) internal successors, (in total 3258), 1528 states have internal predecessors, (3258), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 3258 transitions. [2025-04-26 18:42:36,158 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1529 states and 3258 transitions. [2025-04-26 18:42:36,158 INFO L438 stractBuchiCegarLoop]: Abstraction has 1529 states and 3258 transitions. [2025-04-26 18:42:36,158 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 18:42:36,158 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1529 states and 3258 transitions. [2025-04-26 18:42:36,164 INFO L131 ngComponentsAnalysis]: Automaton has 60 accepting balls. 203 [2025-04-26 18:42:36,164 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:36,164 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:36,164 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:42:36,164 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:36,165 INFO L752 eck$LassoCheckResult]: Stem: "[97] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[100] L10-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[81] $Ultimate##0-->L42: Formula: (and (= v_l_14 0) (< 0 v_l_15)) InVars {l=v_l_15} OutVars{l=v_l_14} AuxVars[] AssignedVars[l]" "[74] $Ultimate##0-->L26: Formula: (and (= v_l_10 0) (< 0 v_l_11)) InVars {l=v_l_11} OutVars{l=v_l_10} AuxVars[] AssignedVars[l]" "[76] L26-->L28: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[78] L28-->L29: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[80] L29-->L26: Formula: (= v_x2_2 (+ v_x2_1 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" [2025-04-26 18:42:36,165 INFO L754 eck$LassoCheckResult]: Loop: "[83] L42-->L44: Formula: (< v_x2_3 v_z_3) InVars {x2=v_x2_3, z=v_z_3} OutVars{x2=v_x2_3, z=v_z_3} AuxVars[] AssignedVars[]" "[85] L44-->L45: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[87] L45-->L42: Formula: (= v_x3_2 (+ v_x3_1 1)) InVars {x3=v_x3_2} OutVars{x3=v_x3_1} AuxVars[] AssignedVars[x3]" [2025-04-26 18:42:36,165 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:36,165 INFO L85 PathProgramCache]: Analyzing trace with hash 576354545, now seen corresponding path program 1 times [2025-04-26 18:42:36,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:36,165 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803969635] [2025-04-26 18:42:36,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:36,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:36,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:42:36,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:42:36,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:36,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 18:42:36,211 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803969635] [2025-04-26 18:42:36,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803969635] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 18:42:36,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 18:42:36,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-26 18:42:36,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103775286] [2025-04-26 18:42:36,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 18:42:36,215 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 18:42:36,216 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:36,216 INFO L85 PathProgramCache]: Analyzing trace with hash 112276, now seen corresponding path program 2 times [2025-04-26 18:42:36,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:36,217 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365510244] [2025-04-26 18:42:36,217 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 18:42:36,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:36,220 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:36,222 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:36,222 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 18:42:36,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,222 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:36,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:36,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:36,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:36,253 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:36,253 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:36,253 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:36,253 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:36,253 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:36,253 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,253 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:36,253 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:36,253 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock3.c.bpl_petrified1_Iteration4_Loop [2025-04-26 18:42:36,253 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:36,253 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:36,257 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:36,259 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:36,280 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:36,280 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:36,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,282 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 18:42:36,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:36,285 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:36,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:36,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,302 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-04-26 18:42:36,303 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:36,303 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:36,327 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:36,327 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x3=0} Honda state: {x3=0} Generalized eigenvectors: [{x3=-1}, {x3=1}, {x3=-1}] Lambdas: [2, 2, 1] Nus: [1, 1] [2025-04-26 18:42:36,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-04-26 18:42:36,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,334 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 18:42:36,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:36,336 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:36,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-04-26 18:42:36,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,357 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 18:42:36,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:36,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:36,421 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:36,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-04-26 18:42:36,425 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:36,425 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:36,425 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:36,425 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:36,425 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:36,425 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,426 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:36,426 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:36,426 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock3.c.bpl_petrified1_Iteration4_Loop [2025-04-26 18:42:36,426 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:36,426 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:36,426 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:36,428 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:36,455 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:36,455 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:36,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,457 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 18:42:36,459 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:36,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:36,469 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:36,469 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:36,469 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:36,469 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:36,469 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:36,469 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:36,471 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:36,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-04-26 18:42:36,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,478 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-04-26 18:42:36,482 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:36,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:36,492 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:36,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:36,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:36,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:36,493 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:36,493 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:36,495 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:36,496 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:42:36,496 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:42:36,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,498 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-04-26 18:42:36,500 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:36,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:36,503 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:36,503 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:36,503 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-04-26 18:42:36,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-04-26 18:42:36,508 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:36,520 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:36,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:42:36,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:42:36,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:36,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:36,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:36,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:36,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:36,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:36,538 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:36,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:36,565 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:42:36,565 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1529 states and 3258 transitions. cyclomatic complexity: 1889 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (in total 10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:36,665 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1529 states and 3258 transitions. cyclomatic complexity: 1889. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (in total 10), 4 states have internal predecessors, (10), 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 5501 states and 11201 transitions. Complement of second has 7 states. [2025-04-26 18:42:36,666 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (in total 10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:36,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2025-04-26 18:42:36,666 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 72 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 18:42:36,667 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:36,667 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 72 transitions. Stem has 10 letters. Loop has 3 letters. [2025-04-26 18:42:36,667 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:36,667 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 72 transitions. Stem has 7 letters. Loop has 6 letters. [2025-04-26 18:42:36,667 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:36,667 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5501 states and 11201 transitions. [2025-04-26 18:42:36,695 INFO L131 ngComponentsAnalysis]: Automaton has 90 accepting balls. 293 [2025-04-26 18:42:36,719 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5501 states to 4454 states and 9052 transitions. [2025-04-26 18:42:36,719 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1204 [2025-04-26 18:42:36,723 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1355 [2025-04-26 18:42:36,723 INFO L74 IsDeterministic]: Start isDeterministic. Operand 4454 states and 9052 transitions. [2025-04-26 18:42:36,723 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:36,723 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4454 states and 9052 transitions. [2025-04-26 18:42:36,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states and 9052 transitions. [2025-04-26 18:42:36,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 2527. [2025-04-26 18:42:36,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2527 states have (on average 2.2330827067669174) internal successors, (in total 5643), 2526 states have internal predecessors, (5643), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 5643 transitions. [2025-04-26 18:42:36,775 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2527 states and 5643 transitions. [2025-04-26 18:42:36,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 18:42:36,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 18:42:36,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 18:42:36,778 INFO L87 Difference]: Start difference. First operand 2527 states and 5643 transitions. 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 18:42:36,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 18:42:36,799 INFO L93 Difference]: Finished difference Result 182 states and 269 transitions. [2025-04-26 18:42:36,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 269 transitions. [2025-04-26 18:42:36,800 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:36,800 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 0 states and 0 transitions. [2025-04-26 18:42:36,800 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 18:42:36,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 18:42:36,800 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 18:42:36,800 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:42:36,800 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:36,800 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:36,801 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 18:42:36,803 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:36,803 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 18:42:36,803 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 18:42:36,804 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:36,804 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 18:42:36,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-26 18:42:36,815 INFO L201 PluginConnector]: Adding new model lock3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:42:36 BoogieIcfgContainer [2025-04-26 18:42:36,815 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:42:36,816 INFO L158 Benchmark]: Toolchain (without parser) took 3196.41ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 85.0MB in the beginning and 69.5MB in the end (delta: 15.5MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2025-04-26 18:42:36,817 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.86ms. Allocated memory is still 159.4MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:36,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.51ms. Allocated memory is still 159.4MB. Free memory was 85.0MB in the beginning and 83.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:36,818 INFO L158 Benchmark]: Boogie Preprocessor took 20.43ms. Allocated memory is still 159.4MB. Free memory was 83.1MB in the beginning and 82.0MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 18:42:36,819 INFO L158 Benchmark]: RCFGBuilder took 159.94ms. Allocated memory is still 159.4MB. Free memory was 82.0MB in the beginning and 72.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 18:42:36,819 INFO L158 Benchmark]: BuchiAutomizer took 2978.59ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 72.6MB in the beginning and 69.5MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:36,820 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 0.86ms. Allocated memory is still 159.4MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.51ms. Allocated memory is still 159.4MB. Free memory was 85.0MB in the beginning and 83.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 20.43ms. Allocated memory is still 159.4MB. Free memory was 83.1MB in the beginning and 82.0MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 159.94ms. Allocated memory is still 159.4MB. Free memory was 82.0MB in the beginning and 72.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2978.59ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 72.6MB in the beginning and 69.5MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 2671 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 198 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 194 mSDsluCounter, 222 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 97 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 211 IncrementalHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 125 mSDtfsCounter, 211 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 37ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.3s InitialAbstraction: Time to compute Ample Reduction [ms]: 347, Number of transitions in reduction automaton: 603, Number of states in reduction automaton: 352, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (1 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 4 locations. One deterministic module has affine ranking function z + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 4 locations. One deterministic module has affine ranking function z + -1 * x2 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 18:42:36,833 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...