/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/Termination.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/lock4.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:43:53,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:43:53,332 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:43:53,336 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:43:53,336 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:43:53,336 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:43:53,336 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:43:53,354 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:43:53,355 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:43:53,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:43:53,355 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:43:53,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:43:53,355 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:43:53,355 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:43:53,356 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:43:53,356 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:43:53,356 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:43:53,356 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:43:53,356 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:43:53,356 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:43:53,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:43:53,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:43:53,357 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:43:53,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:43:53,357 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:43:53,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:43:53,357 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:43:53,357 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:43:53,357 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:43:53,357 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:43:53,357 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:43:53,357 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:43:53,357 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:43:53,357 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:43:53,357 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:43:53,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:43:53,358 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:43:53,358 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:43:53,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:43:53,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:43:53,358 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:43:53,358 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:43:53,358 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:43:53,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:43:53,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:43:53,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:43:53,618 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:43:53,619 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:43:53,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/lock4.c.bpl [2025-04-26 18:43:53,622 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/lock4.c.bpl' [2025-04-26 18:43:53,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:43:53,638 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:43:53,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:43:53,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:43:53,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:43:53,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:53" (1/1) ... [2025-04-26 18:43:53,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:53" (1/1) ... [2025-04-26 18:43:53,673 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:43:53,674 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:43:53,675 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:43:53,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:43:53,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:43:53,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:53" (1/1) ... [2025-04-26 18:43:53,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:53" (1/1) ... [2025-04-26 18:43:53,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:53" (1/1) ... [2025-04-26 18:43:53,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:53" (1/1) ... [2025-04-26 18:43:53,683 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:53" (1/1) ... [2025-04-26 18:43:53,684 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:53" (1/1) ... [2025-04-26 18:43:53,690 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:53" (1/1) ... [2025-04-26 18:43:53,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:53" (1/1) ... [2025-04-26 18:43:53,691 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:53" (1/1) ... [2025-04-26 18:43:53,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:43:53,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:43:53,702 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:43:53,702 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:43:53,703 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:53" (1/1) ... [2025-04-26 18:43:53,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:43:53,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:53,733 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 18:43:53,736 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 18:43:53,760 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:43:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:43:53,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:43:53,761 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:43:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:43:53,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:43:53,761 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 18:43:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 18:43:53,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 18:43:53,761 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:43:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:43:53,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:43:53,761 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 18:43:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 18:43:53,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 18:43:53,762 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 18:43:53,802 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:43:53,803 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:43:53,925 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:43:53,925 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:43:53,944 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:43:53,944 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:43:53,944 INFO L201 PluginConnector]: Adding new model lock4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:43:53 BoogieIcfgContainer [2025-04-26 18:43:53,945 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:43:53,945 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:43:53,945 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:43:53,953 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:43:53,953 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:43:53,954 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:53" (1/2) ... [2025-04-26 18:43:53,955 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3df0fd96 and model type lock4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:43:53, skipping insertion in model container [2025-04-26 18:43:53,955 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:43:53,955 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:43:53" (2/2) ... [2025-04-26 18:43:53,956 INFO L376 chiAutomizerObserver]: Analyzing ICFG lock4.c.bpl [2025-04-26 18:43:54,004 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-26 18:43:54,046 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:43:54,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:43:54,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:54,049 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 18:43:54,050 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 18:43:54,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 45 transitions, 118 flow [2025-04-26 18:43:54,118 INFO L116 PetriNetUnfolderBase]: 4/37 cut-off events. [2025-04-26 18:43:54,123 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-26 18:43:54,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 37 events. 4/37 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 104 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2025-04-26 18:43:54,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 45 transitions, 118 flow [2025-04-26 18:43:54,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2025-04-26 18:43:54,133 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 46 places, 37 transitions, 98 flow [2025-04-26 18:43:54,134 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 37 transitions, 98 flow [2025-04-26 18:43:54,312 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3202 states, 3201 states have (on average 3.9590752889721963) internal successors, (in total 12673), 3201 states have internal predecessors, (12673), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:54,324 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 3202 states, 3201 states have (on average 3.9590752889721963) internal successors, (in total 12673), 3201 states have internal predecessors, (12673), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:54,326 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:43:54,738 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 3657#[thread2EXIT, L14, L29, L77, L64]true [2025-04-26 18:43:54,778 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 4623#[L14, L32, L61, L47, thread4EXIT]true [2025-04-26 18:43:54,832 WARN L140 AmpleReduction]: Number of pruned transitions: 4158 [2025-04-26 18:43:54,832 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 2 [2025-04-26 18:43:54,832 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 277 [2025-04-26 18:43:54,833 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:298 [2025-04-26 18:43:54,833 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:1542 [2025-04-26 18:43:54,833 WARN L145 AmpleReduction]: Times succ was already a loop node:312 [2025-04-26 18:43:54,833 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:420 [2025-04-26 18:43:54,833 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:43:54,837 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 2116 states, 2115 states have (on average 1.891725768321513) internal successors, (in total 4001), 2115 states have internal predecessors, (4001), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:54,844 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:43:54,844 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:43:54,844 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:43:54,844 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:43:54,844 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:43:54,844 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:43:54,844 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:43:54,844 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:43:54,849 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 2116 states, 2115 states have (on average 1.891725768321513) internal successors, (in total 4001), 2115 states have internal predecessors, (4001), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:54,913 INFO L131 ngComponentsAnalysis]: Automaton has 316 accepting balls. 1394 [2025-04-26 18:43:54,913 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:43:54,913 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:43:54,919 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:43:54,919 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:43:54,920 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:43:54,923 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 2116 states, 2115 states have (on average 1.891725768321513) internal successors, (in total 4001), 2115 states have internal predecessors, (4001), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:54,950 INFO L131 ngComponentsAnalysis]: Automaton has 316 accepting balls. 1394 [2025-04-26 18:43:54,950 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:43:54,951 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:43:54,951 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:43:54,951 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:43:54,957 INFO L752 eck$LassoCheckResult]: Stem: "[128] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[98] $Ultimate##0-->L29: Formula: (and (= v_l_13 0) (< 0 v_l_14)) InVars {l=v_l_14} OutVars{l=v_l_13} AuxVars[] AssignedVars[l]" [2025-04-26 18:43:54,957 INFO L754 eck$LassoCheckResult]: Loop: "[100] L29-->L31: 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[]" "[102] L31-->L32: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[104] L32-->L29: Formula: (= v_x2_2 (+ v_x2_1 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" [2025-04-26 18:43:54,961 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash 5027, now seen corresponding path program 1 times [2025-04-26 18:43:54,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:54,968 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118221509] [2025-04-26 18:43:54,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:54,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:55,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:55,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:55,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:55,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:55,017 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:55,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:55,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:55,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:55,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:55,034 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:55,037 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:55,037 INFO L85 PathProgramCache]: Analyzing trace with hash 129157, now seen corresponding path program 1 times [2025-04-26 18:43:55,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:55,037 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325851389] [2025-04-26 18:43:55,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:55,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:55,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:55,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:55,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:55,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:55,045 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:55,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:55,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:55,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:55,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:55,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:55,054 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:55,054 INFO L85 PathProgramCache]: Analyzing trace with hash 149858723, now seen corresponding path program 1 times [2025-04-26 18:43:55,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:55,054 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850943834] [2025-04-26 18:43:55,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:55,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:55,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:43:55,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:43:55,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:55,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:55,062 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:55,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:43:55,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:43:55,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:55,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:55,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:55,140 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:55,143 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:55,144 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:55,144 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:55,144 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:43:55,144 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:55,144 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:55,144 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:55,144 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:43:55,144 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:55,144 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:55,186 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:55,201 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:55,240 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:55,240 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:43:55,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:55,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:55,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:55,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 18:43:55,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:43:55,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:55,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 18:43:55,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:55,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:55,272 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:55,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 18:43:55,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:43:55,276 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:55,308 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:43:55,308 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x2=0} Honda state: {x2=0} Generalized eigenvectors: [{x2=-8}, {x2=3}, {x2=4}] Lambdas: [1, 1, 1] Nus: [0, 0] [2025-04-26 18:43:55,313 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 18:43:55,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:55,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:55,315 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:55,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 18:43:55,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:43:55,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:55,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 18:43:55,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:55,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:55,336 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:55,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 18:43:55,339 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:43:55,339 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:55,405 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:43:55,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:55,410 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:55,410 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:55,410 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:55,410 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:55,410 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:43:55,410 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:55,410 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:55,410 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:55,410 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:43:55,410 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:55,410 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:55,411 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:55,415 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:55,439 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:55,443 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:43:55,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:55,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:55,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:55,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 18:43:55,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:43:55,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:43:55,460 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:43:55,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:43:55,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:43:55,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:43:55,464 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:43:55,464 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:43:55,466 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:43:55,472 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 18:43:55,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:55,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:55,474 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:55,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 18:43:55,477 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:43:55,487 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:43:55,487 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:43:55,487 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:43:55,487 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:43:55,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:43:55,489 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:43:55,489 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:43:55,493 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:43:55,497 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:43:55,497 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:43:55,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:55,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:55,500 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:55,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 18:43:55,503 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:43:55,506 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:43:55,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:55,506 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:43:55,507 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:43:55,507 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-04-26 18:43:55,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:55,515 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:43:55,534 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:55,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:55,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:55,541 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:55,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:55,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:43:55,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:55,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:55,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:55,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:55,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:55,554 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:43:55,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:43:55,621 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 18:43:55,625 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 2116 states, 2115 states have (on average 1.891725768321513) internal successors, (in total 4001), 2115 states have internal predecessors, (4001), 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 18:43:55,819 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 2116 states, 2115 states have (on average 1.891725768321513) internal successors, (in total 4001), 2115 states have internal predecessors, (4001), 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 5964 states and 12062 transitions. Complement of second has 7 states. [2025-04-26 18:43:55,820 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:43:55,823 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 18:43:55,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-04-26 18:43:55,827 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 99 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 18:43:55,828 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:55,828 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 99 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 18:43:55,828 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:55,830 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 99 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 18:43:55,831 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:55,831 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5964 states and 12062 transitions. [2025-04-26 18:43:55,906 INFO L131 ngComponentsAnalysis]: Automaton has 422 accepting balls. 1672 [2025-04-26 18:43:55,963 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5964 states to 4180 states and 8737 transitions. [2025-04-26 18:43:55,964 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2931 [2025-04-26 18:43:55,974 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3432 [2025-04-26 18:43:55,974 INFO L74 IsDeterministic]: Start isDeterministic. Operand 4180 states and 8737 transitions. [2025-04-26 18:43:55,975 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:43:55,975 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4180 states and 8737 transitions. [2025-04-26 18:43:55,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states and 8737 transitions. [2025-04-26 18:43:56,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 3070. [2025-04-26 18:43:56,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3070 states, 3070 states have (on average 2.1485342019543974) internal successors, (in total 6596), 3069 states have internal predecessors, (6596), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 6596 transitions. [2025-04-26 18:43:56,140 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3070 states and 6596 transitions. [2025-04-26 18:43:56,140 INFO L438 stractBuchiCegarLoop]: Abstraction has 3070 states and 6596 transitions. [2025-04-26 18:43:56,140 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:43:56,141 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3070 states and 6596 transitions. [2025-04-26 18:43:56,158 INFO L131 ngComponentsAnalysis]: Automaton has 327 accepting balls. 1381 [2025-04-26 18:43:56,158 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:43:56,158 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:43:56,159 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 18:43:56,159 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:43:56,159 INFO L752 eck$LassoCheckResult]: Stem: "[128] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[131] L11-->$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]" "[105] $Ultimate##0-->L45: Formula: (and (= v_l_17 0) (< 0 v_l_18)) InVars {l=v_l_18} OutVars{l=v_l_17} AuxVars[] AssignedVars[l]" [2025-04-26 18:43:56,159 INFO L754 eck$LassoCheckResult]: Loop: "[107] L45-->L47: 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[]" "[109] L47-->L48: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[111] L48-->L45: Formula: (= v_x3_2 (+ v_x3_1 1)) InVars {x3=v_x3_2} OutVars{x3=v_x3_1} AuxVars[] AssignedVars[x3]" [2025-04-26 18:43:56,160 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:56,160 INFO L85 PathProgramCache]: Analyzing trace with hash 156965, now seen corresponding path program 1 times [2025-04-26 18:43:56,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:56,160 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028874451] [2025-04-26 18:43:56,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:56,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:56,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:56,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:56,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:56,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:56,164 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:56,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:56,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:56,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:56,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:56,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:56,167 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:56,167 INFO L85 PathProgramCache]: Analyzing trace with hash 136108, now seen corresponding path program 1 times [2025-04-26 18:43:56,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:56,167 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717209703] [2025-04-26 18:43:56,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:56,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:56,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:56,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:56,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:56,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:56,172 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:56,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:56,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:56,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:56,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:56,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:56,179 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:56,180 INFO L85 PathProgramCache]: Analyzing trace with hash 381283336, now seen corresponding path program 1 times [2025-04-26 18:43:56,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:56,180 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585727942] [2025-04-26 18:43:56,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:56,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:56,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:43:56,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:43:56,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:56,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:56,184 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:56,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:43:56,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:43:56,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:56,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:56,190 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:56,213 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:56,213 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:56,213 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:56,213 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:56,213 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:43:56,213 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:56,213 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:56,213 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:56,213 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:43:56,213 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:56,213 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:56,215 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:56,219 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:56,245 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:56,246 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:43:56,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:56,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:56,249 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:56,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 18:43:56,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:43:56,251 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:56,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 18:43:56,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:56,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:56,272 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 18:43:56,273 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 18:43:56,275 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:43:56,275 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:56,300 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:43:56,301 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 18:43:56,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 18:43:56,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:56,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:56,308 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 18:43:56,309 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 18:43:56,310 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:43:56,310 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:56,326 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 18:43:56,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:56,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:56,328 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 18:43:56,329 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 18:43:56,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:43:56,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:56,392 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:43:56,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 18:43:56,397 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:56,397 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:56,397 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:56,397 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:56,397 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:43:56,397 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:56,397 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:56,397 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:56,397 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:43:56,397 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:56,397 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:56,398 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:56,401 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:56,422 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:56,423 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:43:56,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:56,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:56,424 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 18:43:56,426 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 18:43:56,428 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:43:56,439 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:43:56,439 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:43:56,439 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:43:56,439 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:43:56,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:43:56,440 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:43:56,440 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:43:56,442 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:43:56,448 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 18:43:56,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:56,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:56,450 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 18:43:56,452 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 18:43:56,453 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:43:56,463 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:43:56,463 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:43:56,463 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:43:56,463 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:43:56,463 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:43:56,464 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:43:56,464 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:43:56,466 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:43:56,469 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:43:56,469 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:43:56,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:56,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:56,472 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 18:43:56,473 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 18:43:56,474 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:43:56,477 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:43:56,478 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 18:43:56,478 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:43:56,478 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:43:56,478 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-04-26 18:43:56,484 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 18:43:56,485 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:43:56,502 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:56,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:56,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:56,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:56,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:56,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:43:56,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:56,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:56,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:56,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:56,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:56,515 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:43:56,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:43:56,540 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 18:43:56,540 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 3070 states and 6596 transitions. cyclomatic complexity: 3949 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 18:43:56,693 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 3070 states and 6596 transitions. cyclomatic complexity: 3949. 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 8910 states and 19290 transitions. Complement of second has 7 states. [2025-04-26 18:43:56,693 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:43:56,694 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 18:43:56,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-04-26 18:43:56,694 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 99 transitions. Stem has 3 letters. Loop has 3 letters. [2025-04-26 18:43:56,694 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:56,694 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 99 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 18:43:56,694 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:56,694 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 99 transitions. Stem has 3 letters. Loop has 6 letters. [2025-04-26 18:43:56,695 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:56,695 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8910 states and 19290 transitions. [2025-04-26 18:43:56,820 INFO L131 ngComponentsAnalysis]: Automaton has 413 accepting balls. 1626 [2025-04-26 18:43:56,880 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8910 states to 7071 states and 15739 transitions. [2025-04-26 18:43:56,880 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3501 [2025-04-26 18:43:56,887 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4085 [2025-04-26 18:43:56,887 INFO L74 IsDeterministic]: Start isDeterministic. Operand 7071 states and 15739 transitions. [2025-04-26 18:43:56,887 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:43:56,887 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7071 states and 15739 transitions. [2025-04-26 18:43:56,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states and 15739 transitions. [2025-04-26 18:43:57,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 5403. [2025-04-26 18:43:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5403 states, 5403 states have (on average 2.3163057560614475) internal successors, (in total 12515), 5402 states have internal predecessors, (12515), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 12515 transitions. [2025-04-26 18:43:57,050 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5403 states and 12515 transitions. [2025-04-26 18:43:57,050 INFO L438 stractBuchiCegarLoop]: Abstraction has 5403 states and 12515 transitions. [2025-04-26 18:43:57,051 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:43:57,051 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5403 states and 12515 transitions. [2025-04-26 18:43:57,079 INFO L131 ngComponentsAnalysis]: Automaton has 349 accepting balls. 1429 [2025-04-26 18:43:57,079 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:43:57,079 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:43:57,080 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 18:43:57,080 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:43:57,080 INFO L752 eck$LassoCheckResult]: Stem: "[128] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[131] L11-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[134] L12-->$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]" "[112] $Ultimate##0-->L61: Formula: (and (= v_l_21 0) (< 0 v_l_22)) InVars {l=v_l_22} OutVars{l=v_l_21} AuxVars[] AssignedVars[l]" [2025-04-26 18:43:57,080 INFO L754 eck$LassoCheckResult]: Loop: "[114] L61-->L63: 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[]" "[116] L63-->L64: Formula: (= (+ v_x3_6 1) v_x3_5) InVars {x3=v_x3_6} OutVars{x3=v_x3_5} AuxVars[] AssignedVars[x3]" "[118] L64-->L61: Formula: (= v_x4_2 (+ v_x4_1 1)) InVars {x4=v_x4_2} OutVars{x4=v_x4_1} AuxVars[] AssignedVars[x4]" [2025-04-26 18:43:57,080 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:57,080 INFO L85 PathProgramCache]: Analyzing trace with hash 4866926, now seen corresponding path program 1 times [2025-04-26 18:43:57,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:57,081 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626133433] [2025-04-26 18:43:57,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:57,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:57,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:43:57,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:43:57,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:57,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:57,084 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:57,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:43:57,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:43:57,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:57,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:57,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:57,087 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:57,087 INFO L85 PathProgramCache]: Analyzing trace with hash 143059, now seen corresponding path program 1 times [2025-04-26 18:43:57,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:57,087 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750342489] [2025-04-26 18:43:57,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:57,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:57,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:57,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:57,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:57,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:57,090 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:57,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:57,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:57,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:57,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:57,094 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:57,095 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:57,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1038182330, now seen corresponding path program 1 times [2025-04-26 18:43:57,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:57,095 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937512515] [2025-04-26 18:43:57,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:57,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:57,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:43:57,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:43:57,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:57,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:57,100 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:57,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:43:57,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:43:57,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:57,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:57,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:57,127 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:57,128 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:57,128 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:57,128 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:57,128 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:43:57,128 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:57,128 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:57,128 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:57,128 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:43:57,128 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:57,128 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:57,128 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:57,132 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:57,154 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:57,154 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:43:57,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:57,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:57,157 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 18:43:57,159 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 18:43:57,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:43:57,160 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:57,177 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 18:43:57,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:57,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:57,180 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 18:43:57,181 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 18:43:57,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:43:57,183 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:57,214 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:43:57,214 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x4=0} Honda state: {x4=0} Generalized eigenvectors: [{x4=-5}, {x4=-3}, {x4=7}] Lambdas: [1, 1, 1] Nus: [0, 0] [2025-04-26 18:43:57,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-04-26 18:43:57,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:57,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:57,226 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 18:43:57,229 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 18:43:57,230 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:43:57,230 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:57,259 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 18:43:57,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:57,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:57,261 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 18:43:57,263 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 18:43:57,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:43:57,263 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:57,332 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:43:57,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:57,337 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:57,337 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:57,337 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:57,337 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:57,337 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:43:57,337 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:57,337 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:57,337 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:57,337 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:43:57,337 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:57,337 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:57,338 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:57,341 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:57,363 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:57,363 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:43:57,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:57,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:57,365 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 18:43:57,367 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 18:43:57,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:43:57,378 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:43:57,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:43:57,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:43:57,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:43:57,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:43:57,380 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:43:57,380 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:43:57,381 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:43:57,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:57,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:57,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:57,389 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 18:43:57,390 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 18:43:57,396 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:43:57,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:43:57,408 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:43:57,408 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:43:57,408 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:43:57,408 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:43:57,410 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:43:57,410 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:43:57,413 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:43:57,418 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:43:57,418 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:43:57,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:57,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:57,422 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 18:43:57,427 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:43:57,430 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 18:43:57,430 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:43:57,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:57,431 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:43:57,431 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:43:57,431 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-04-26 18:43:57,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:57,438 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:43:57,448 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:57,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:43:57,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:43:57,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:57,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:57,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:43:57,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:57,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:57,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:57,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:57,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:57,463 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:43:57,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:43:57,489 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 18:43:57,490 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5403 states and 12515 transitions. cyclomatic complexity: 7733 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 18:43:57,846 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5403 states and 12515 transitions. cyclomatic complexity: 7733. 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 16131 states and 37049 transitions. Complement of second has 7 states. [2025-04-26 18:43:57,847 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:43:57,848 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 18:43:57,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-04-26 18:43:57,849 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 101 transitions. Stem has 4 letters. Loop has 3 letters. [2025-04-26 18:43:57,849 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:57,849 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 101 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 18:43:57,849 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:57,849 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 101 transitions. Stem has 4 letters. Loop has 6 letters. [2025-04-26 18:43:57,850 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:57,851 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16131 states and 37049 transitions. [2025-04-26 18:43:57,982 INFO L131 ngComponentsAnalysis]: Automaton has 442 accepting balls. 1712 [2025-04-26 18:43:58,155 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16131 states to 12436 states and 29357 transitions. [2025-04-26 18:43:58,156 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4481 [2025-04-26 18:43:58,165 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5063 [2025-04-26 18:43:58,165 INFO L74 IsDeterministic]: Start isDeterministic. Operand 12436 states and 29357 transitions. [2025-04-26 18:43:58,165 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:43:58,165 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12436 states and 29357 transitions. [2025-04-26 18:43:58,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12436 states and 29357 transitions. [2025-04-26 18:43:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12436 to 9898. [2025-04-26 18:43:58,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9898 states, 9898 states have (on average 2.4436249747423724) internal successors, (in total 24187), 9897 states have internal predecessors, (24187), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:58,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9898 states to 9898 states and 24187 transitions. [2025-04-26 18:43:58,428 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9898 states and 24187 transitions. [2025-04-26 18:43:58,428 INFO L438 stractBuchiCegarLoop]: Abstraction has 9898 states and 24187 transitions. [2025-04-26 18:43:58,428 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 18:43:58,428 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9898 states and 24187 transitions. [2025-04-26 18:43:58,478 INFO L131 ngComponentsAnalysis]: Automaton has 383 accepting balls. 1522 [2025-04-26 18:43:58,478 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:43:58,478 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:43:58,479 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 18:43:58,479 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:43:58,480 INFO L752 eck$LassoCheckResult]: Stem: "[128] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[131] L11-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[134] L12-->$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]" "[137] L13-->$Ultimate##0: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" "[119] $Ultimate##0-->L77: Formula: (and (< 0 v_l_26) (= v_l_25 0)) InVars {l=v_l_26} OutVars{l=v_l_25} AuxVars[] AssignedVars[l]" [2025-04-26 18:43:58,480 INFO L754 eck$LassoCheckResult]: Loop: "[121] L77-->L79: Formula: (< v_x4_3 v_z_7) InVars {x4=v_x4_3, z=v_z_7} OutVars{x4=v_x4_3, z=v_z_7} AuxVars[] AssignedVars[]" "[123] L79-->L80: Formula: (= v_x4_4 (+ v_x4_5 1)) InVars {x4=v_x4_5} OutVars{x4=v_x4_4} AuxVars[] AssignedVars[x4]" "[125] L80-->L77: Formula: (= v_x1_6 (+ v_x1_5 1)) InVars {x1=v_x1_6} OutVars{x1=v_x1_5} AuxVars[] AssignedVars[x1]" [2025-04-26 18:43:58,480 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:58,480 INFO L85 PathProgramCache]: Analyzing trace with hash 150875600, now seen corresponding path program 1 times [2025-04-26 18:43:58,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:58,480 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230930744] [2025-04-26 18:43:58,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:58,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:58,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:43:58,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:43:58,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:58,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:58,489 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:58,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:43:58,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:43:58,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:58,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:58,493 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:58,493 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:58,493 INFO L85 PathProgramCache]: Analyzing trace with hash 150010, now seen corresponding path program 1 times [2025-04-26 18:43:58,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:58,493 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970223256] [2025-04-26 18:43:58,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:58,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:58,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:58,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:58,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:58,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:58,496 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:58,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:58,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:58,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:58,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:58,499 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:58,500 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:58,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2095639093, now seen corresponding path program 1 times [2025-04-26 18:43:58,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:58,500 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657116824] [2025-04-26 18:43:58,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:58,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:58,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 18:43:58,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 18:43:58,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:58,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:58,510 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:58,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 18:43:58,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 18:43:58,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:58,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:58,517 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:58,550 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:58,550 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:58,550 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:58,550 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:58,550 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:43:58,550 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:58,551 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:58,551 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:58,551 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration4_Loop [2025-04-26 18:43:58,551 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:58,551 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:58,551 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:58,558 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:58,582 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:58,582 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:43:58,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:58,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:58,587 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 18:43:58,589 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 18:43:58,590 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:43:58,590 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:58,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2025-04-26 18:43:58,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:58,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:58,613 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:58,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-04-26 18:43:58,615 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:43:58,615 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:58,682 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:43:58,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-04-26 18:43:58,687 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:58,687 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:58,687 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:58,687 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:58,687 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:43:58,687 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:58,687 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:58,687 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:58,687 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration4_Loop [2025-04-26 18:43:58,687 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:58,687 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:58,688 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:58,693 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:58,712 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:58,712 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:43:58,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:58,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:58,714 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:58,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-04-26 18:43:58,717 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:43:58,727 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:43:58,727 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:43:58,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:43:58,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:43:58,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:43:58,730 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:43:58,730 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:43:58,732 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:43:58,735 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:43:58,735 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:43:58,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:58,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:58,737 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:58,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-04-26 18:43:58,740 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:43:58,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:58,743 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:43:58,743 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:43:58,743 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-04-26 18:43:58,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:58,750 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:43:58,761 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:58,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:43:58,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:43:58,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:58,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:58,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:43:58,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:58,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:43:58,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:43:58,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:58,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:58,780 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:43:58,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:43:58,818 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 18:43:58,818 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9898 states and 24187 transitions. cyclomatic complexity: 15223 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:59,062 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9898 states and 24187 transitions. cyclomatic complexity: 15223. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 27782 states and 63994 transitions. Complement of second has 7 states. [2025-04-26 18:43:59,062 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:43:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:59,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-04-26 18:43:59,063 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 18:43:59,063 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:59,063 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 8 letters. Loop has 3 letters. [2025-04-26 18:43:59,063 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:59,063 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 5 letters. Loop has 6 letters. [2025-04-26 18:43:59,063 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:59,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27782 states and 63994 transitions. [2025-04-26 18:43:59,487 INFO L131 ngComponentsAnalysis]: Automaton has 549 accepting balls. 2010 [2025-04-26 18:43:59,694 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27782 states to 21950 states and 51986 transitions. [2025-04-26 18:43:59,694 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5812 [2025-04-26 18:43:59,706 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6293 [2025-04-26 18:43:59,706 INFO L74 IsDeterministic]: Start isDeterministic. Operand 21950 states and 51986 transitions. [2025-04-26 18:43:59,706 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:43:59,706 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21950 states and 51986 transitions. [2025-04-26 18:43:59,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21950 states and 51986 transitions. [2025-04-26 18:44:00,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21950 to 18059. [2025-04-26 18:44:00,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18059 states, 18059 states have (on average 2.4682429813389444) internal successors, (in total 44574), 18058 states have internal predecessors, (44574), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:44:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18059 states to 18059 states and 44574 transitions. [2025-04-26 18:44:00,232 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18059 states and 44574 transitions. [2025-04-26 18:44:00,232 INFO L438 stractBuchiCegarLoop]: Abstraction has 18059 states and 44574 transitions. [2025-04-26 18:44:00,232 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 18:44:00,232 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18059 states and 44574 transitions. [2025-04-26 18:44:00,316 INFO L131 ngComponentsAnalysis]: Automaton has 437 accepting balls. 1667 [2025-04-26 18:44:00,316 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:00,316 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:00,316 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:44:00,316 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:44:00,317 INFO L752 eck$LassoCheckResult]: Stem: "[128] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[98] $Ultimate##0-->L29: Formula: (and (= v_l_13 0) (< 0 v_l_14)) InVars {l=v_l_14} OutVars{l=v_l_13} AuxVars[] AssignedVars[l]" "[131] L11-->$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]" "[100] L29-->L31: 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[]" "[102] L31-->L32: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[105] $Ultimate##0-->L45: Formula: (and (= v_l_17 0) (< 0 v_l_18)) InVars {l=v_l_18} OutVars{l=v_l_17} AuxVars[] AssignedVars[l]" "[104] L32-->L29: Formula: (= v_x2_2 (+ v_x2_1 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" [2025-04-26 18:44:00,317 INFO L754 eck$LassoCheckResult]: Loop: "[107] L45-->L47: 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[]" "[109] L47-->L48: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[111] L48-->L45: Formula: (= v_x3_2 (+ v_x3_1 1)) InVars {x3=v_x3_2} OutVars{x3=v_x3_1} AuxVars[] AssignedVars[x3]" [2025-04-26 18:44:00,318 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:00,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1986084255, now seen corresponding path program 1 times [2025-04-26 18:44:00,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:00,318 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666569962] [2025-04-26 18:44:00,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:00,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:00,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:44:00,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:44:00,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:00,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:00,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:44:00,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 18:44:00,358 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666569962] [2025-04-26 18:44:00,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666569962] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 18:44:00,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 18:44:00,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-26 18:44:00,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990290320] [2025-04-26 18:44:00,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 18:44:00,363 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 18:44:00,363 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:00,364 INFO L85 PathProgramCache]: Analyzing trace with hash 136108, now seen corresponding path program 2 times [2025-04-26 18:44:00,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:00,364 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659216292] [2025-04-26 18:44:00,364 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 18:44:00,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:00,367 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:00,368 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:00,368 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 18:44:00,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:00,368 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:00,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:00,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:00,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:00,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:00,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:00,391 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:00,391 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:00,391 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:00,392 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:00,392 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:44:00,392 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:00,392 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:00,392 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:00,392 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration5_Loop [2025-04-26 18:44:00,392 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:00,392 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:00,392 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:00,397 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:00,419 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:00,419 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:44:00,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:00,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:00,421 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:00,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-04-26 18:44:00,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:00,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:00,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-04-26 18:44:00,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:00,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:00,444 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:00,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-04-26 18:44:00,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:00,447 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:00,517 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:44:00,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:00,523 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:00,523 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:00,523 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:00,523 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:00,523 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:44:00,523 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:00,523 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:00,523 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:00,523 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration5_Loop [2025-04-26 18:44:00,523 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:00,523 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:00,524 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:00,535 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:00,554 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:00,555 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:44:00,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:00,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:00,557 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:00,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-04-26 18:44:00,560 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:44:00,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:00,570 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:00,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:00,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:00,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:00,571 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:00,571 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:00,574 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:44:00,577 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:44:00,577 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:44:00,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:00,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:00,581 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:00,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-04-26 18:44:00,583 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:44:00,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2025-04-26 18:44:00,586 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:44:00,586 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:44:00,586 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-04-26 18:44:00,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2025-04-26 18:44:00,593 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:44:00,606 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:00,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:44:00,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:44:00,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:00,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:00,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:44:00,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:00,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:00,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:00,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:00,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:00,632 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:44:00,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:44:00,664 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 18:44:00,665 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18059 states and 44574 transitions. cyclomatic complexity: 27969 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 18:44:01,317 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18059 states and 44574 transitions. cyclomatic complexity: 27969. 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 68436 states and 163545 transitions. Complement of second has 7 states. [2025-04-26 18:44:01,317 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:44:01,318 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 18:44:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-04-26 18:44:01,318 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 112 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 18:44:01,318 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:01,318 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 112 transitions. Stem has 10 letters. Loop has 3 letters. [2025-04-26 18:44:01,318 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:01,318 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 112 transitions. Stem has 7 letters. Loop has 6 letters. [2025-04-26 18:44:01,318 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:01,319 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68436 states and 163545 transitions. [2025-04-26 18:44:02,027 INFO L131 ngComponentsAnalysis]: Automaton has 692 accepting balls. 2487 [2025-04-26 18:44:02,427 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68436 states to 55206 states and 131151 transitions. [2025-04-26 18:44:02,427 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11591 [2025-04-26 18:44:02,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12881 [2025-04-26 18:44:02,451 INFO L74 IsDeterministic]: Start isDeterministic. Operand 55206 states and 131151 transitions. [2025-04-26 18:44:02,451 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:44:02,451 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55206 states and 131151 transitions. [2025-04-26 18:44:02,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55206 states and 131151 transitions. [2025-04-26 18:44:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55206 to 31078. [2025-04-26 18:44:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31078 states, 31078 states have (on average 2.5998455499066866) internal successors, (in total 80798), 31077 states have internal predecessors, (80798), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:44:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31078 states to 31078 states and 80798 transitions. [2025-04-26 18:44:03,597 INFO L240 hiAutomatonCegarLoop]: Abstraction has 31078 states and 80798 transitions. [2025-04-26 18:44:03,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 18:44:03,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 18:44:03,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 18:44:03,602 INFO L87 Difference]: Start difference. First operand 31078 states and 80798 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 18:44:03,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 18:44:03,657 INFO L93 Difference]: Finished difference Result 522 states and 801 transitions. [2025-04-26 18:44:03,658 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 522 states and 801 transitions. [2025-04-26 18:44:03,664 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:44:03,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 522 states to 0 states and 0 transitions. [2025-04-26 18:44:03,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 18:44:03,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 18:44:03,664 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 18:44:03,664 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:44:03,665 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:44:03,665 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:44:03,665 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 18:44:03,665 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:44:03,666 INFO L340 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-04-26 18:44:03,666 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 18:44:03,666 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:44:03,666 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 18:44:03,691 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 18:44:03,692 INFO L201 PluginConnector]: Adding new model lock4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:44:03 BoogieIcfgContainer [2025-04-26 18:44:03,692 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:44:03,694 INFO L158 Benchmark]: Toolchain (without parser) took 10054.68ms. Allocated memory was 159.4MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 86.4MB in the beginning and 697.8MB in the end (delta: -611.4MB). Peak memory consumption was 388.7MB. Max. memory is 8.0GB. [2025-04-26 18:44:03,694 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.71ms. Allocated memory is still 159.4MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:44:03,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.13ms. Allocated memory is still 159.4MB. Free memory was 86.4MB in the beginning and 84.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:44:03,695 INFO L158 Benchmark]: Boogie Preprocessor took 26.19ms. Allocated memory is still 159.4MB. Free memory was 84.4MB in the beginning and 83.5MB in the end (delta: 835.8kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:44:03,695 INFO L158 Benchmark]: RCFGBuilder took 242.95ms. Allocated memory is still 159.4MB. Free memory was 83.5MB in the beginning and 72.8MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-26 18:44:03,696 INFO L158 Benchmark]: BuchiAutomizer took 9746.85ms. Allocated memory was 159.4MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 72.5MB in the beginning and 697.8MB in the end (delta: -625.3MB). Peak memory consumption was 376.1MB. Max. memory is 8.0GB. [2025-04-26 18:44:03,698 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 0.71ms. Allocated memory is still 159.4MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.13ms. Allocated memory is still 159.4MB. Free memory was 86.4MB in the beginning and 84.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 26.19ms. Allocated memory is still 159.4MB. Free memory was 84.4MB in the beginning and 83.5MB in the end (delta: 835.8kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 242.95ms. Allocated memory is still 159.4MB. Free memory was 83.5MB in the beginning and 72.8MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 9746.85ms. Allocated memory was 159.4MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 72.5MB in the beginning and 697.8MB in the end (delta: -625.3MB). Peak memory consumption was 376.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.6s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.3s. Büchi inclusion checks took 1.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 2.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 33335 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 2.3s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 393 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 388 mSDsluCounter, 427 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 191 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 423 IncrementalHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 236 mSDtfsCounter, 423 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 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: unsat Degree: 0 Time: 22ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.7s InitialAbstraction: Time to compute Ample Reduction [ms]: 792, Number of transitions in reduction automaton: 4001, Number of states in reduction automaton: 2116, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 5 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 -1 * x4 + 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 18:44:03,722 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...