/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 16:58:40,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:58:40,761 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:58:40,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:58:40,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:58:40,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:58:40,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:58:40,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:58:40,787 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:58:40,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:58:40,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:58:40,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:58:40,788 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:58:40,788 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:58:40,788 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:58:40,788 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:58:40,788 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:58:40,788 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:58:40,788 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:58:40,788 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:58:40,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:58:40,788 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:58:40,788 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:58:40,789 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:58:40,789 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:58:40,789 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:58:40,790 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:58:40,790 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:58:41,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:58:41,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:58:41,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:58:41,034 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:58:41,035 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:58:41,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/lock4.c.bpl [2025-04-26 16:58:41,036 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/lock4.c.bpl' [2025-04-26 16:58:41,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:58:41,054 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:58:41,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:58:41,056 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:58:41,056 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:58:41,064 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 04:58:41" (1/1) ... [2025-04-26 16:58:41,086 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 04:58:41" (1/1) ... [2025-04-26 16:58:41,090 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:58:41,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:58:41,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:58:41,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:58:41,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:58:41,096 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 04:58:41" (1/1) ... [2025-04-26 16:58:41,097 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 04:58:41" (1/1) ... [2025-04-26 16:58:41,097 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 04:58:41" (1/1) ... [2025-04-26 16:58:41,097 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 04:58:41" (1/1) ... [2025-04-26 16:58:41,099 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 04:58:41" (1/1) ... [2025-04-26 16:58:41,099 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 04:58:41" (1/1) ... [2025-04-26 16:58:41,102 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 04:58:41" (1/1) ... [2025-04-26 16:58:41,102 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 04:58:41" (1/1) ... [2025-04-26 16:58:41,103 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 04:58:41" (1/1) ... [2025-04-26 16:58:41,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:58:41,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:58:41,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:58:41,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:58:41,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:41" (1/1) ... [2025-04-26 16:58:41,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:58:41,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:41,137 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 16:58:41,140 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 16:58:41,163 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:58:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:58:41,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:58:41,163 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:58:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:58:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:58:41,164 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:58:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:58:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:58:41,164 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:58:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:58:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:58:41,164 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:58:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:58:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:58:41,165 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 16:58:41,202 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:58:41,204 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:58:41,274 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:58:41,275 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:58:41,290 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:58:41,290 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:58:41,291 INFO L201 PluginConnector]: Adding new model lock4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:58:41 BoogieIcfgContainer [2025-04-26 16:58:41,291 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:58:41,291 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:58:41,291 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:58:41,295 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:58:41,296 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:58:41,296 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:41" (1/2) ... [2025-04-26 16:58:41,297 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ca9e87f and model type lock4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:58:41, skipping insertion in model container [2025-04-26 16:58:41,298 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:58:41,298 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 04:58:41" (2/2) ... [2025-04-26 16:58:41,299 INFO L376 chiAutomizerObserver]: Analyzing ICFG lock4.c.bpl [2025-04-26 16:58:41,348 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-26 16:58:41,376 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:58:41,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:58:41,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:41,380 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 16:58:41,381 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 16:58:41,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 45 transitions, 118 flow [2025-04-26 16:58:41,451 INFO L116 PetriNetUnfolderBase]: 4/37 cut-off events. [2025-04-26 16:58:41,453 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-26 16:58:41,457 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 16:58:41,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 45 transitions, 118 flow [2025-04-26 16:58:41,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2025-04-26 16:58:41,460 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 46 places, 37 transitions, 98 flow [2025-04-26 16:58:41,465 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:58:41,920 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 3009#[L29, L77, L64, thread2EXIT, L14]true [2025-04-26 16:58:41,975 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 4421#[L14, L32, L61, thread4EXIT, L47]true [2025-04-26 16:58:42,074 WARN L140 AmpleReduction]: Number of pruned transitions: 4158 [2025-04-26 16:58:42,074 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 2 [2025-04-26 16:58:42,074 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 277 [2025-04-26 16:58:42,074 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:298 [2025-04-26 16:58:42,075 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:1542 [2025-04-26 16:58:42,076 WARN L145 AmpleReduction]: Times succ was already a loop node:312 [2025-04-26 16:58:42,076 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:419 [2025-04-26 16:58:42,076 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:58:42,085 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 16:58:42,092 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:58:42,092 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:58:42,092 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:58:42,092 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:58:42,092 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:58:42,092 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:58:42,092 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:58:42,092 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:58:42,098 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 16:58:42,144 INFO L131 ngComponentsAnalysis]: Automaton has 316 accepting balls. 1394 [2025-04-26 16:58:42,147 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:58:42,147 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:58:42,152 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:58:42,152 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:58:42,152 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:58:42,156 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 16:58:42,180 INFO L131 ngComponentsAnalysis]: Automaton has 316 accepting balls. 1394 [2025-04-26 16:58:42,180 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:58:42,180 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:58:42,180 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:58:42,180 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:58:42,185 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] $Ultimate##0-->L29: Formula: (and (= v_l_13 0) (< 0 v_l_14)) InVars {l=v_l_14} OutVars{l=v_l_13} AuxVars[] AssignedVars[l]" [2025-04-26 16:58:42,185 INFO L754 eck$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 16:58:42,188 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:42,189 INFO L85 PathProgramCache]: Analyzing trace with hash 5027, now seen corresponding path program 1 times [2025-04-26 16:58:42,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:42,195 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457547937] [2025-04-26 16:58:42,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:42,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:42,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:58:42,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:58:42,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:42,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:42,248 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:42,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:58:42,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:58:42,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:42,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:42,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:42,269 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:42,269 INFO L85 PathProgramCache]: Analyzing trace with hash 129157, now seen corresponding path program 1 times [2025-04-26 16:58:42,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:42,269 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485115877] [2025-04-26 16:58:42,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:42,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:42,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:42,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:42,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:42,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:42,278 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:42,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:42,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:42,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:42,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:42,284 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:42,288 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:42,288 INFO L85 PathProgramCache]: Analyzing trace with hash 149858723, now seen corresponding path program 1 times [2025-04-26 16:58:42,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:42,288 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921760825] [2025-04-26 16:58:42,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:42,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:42,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:58:42,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:58:42,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:42,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:42,295 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:42,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:58:42,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:58:42,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:42,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:42,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:42,378 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:42,379 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:42,379 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:42,379 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:42,379 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:58:42,379 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:42,379 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:42,379 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:42,380 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:58:42,380 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:42,380 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:42,416 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:42,427 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:42,461 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:42,462 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:58:42,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:42,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:42,503 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 16:58:42,504 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 16:58:42,506 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:42,506 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:42,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:42,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:42,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:42,526 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 16:58:42,528 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 16:58:42,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:42,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:42,556 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:58:42,556 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 16:58:42,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:42,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:42,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:42,564 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 16:58:42,565 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 16:58:42,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:42,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:42,588 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 16:58:42,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:42,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:42,590 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 16:58:42,590 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 16:58:42,593 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:42,593 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:42,660 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:58:42,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 16:58:42,665 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:42,665 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:42,665 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:42,665 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:42,665 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:58:42,665 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:42,665 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:42,665 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:42,665 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:58:42,665 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:42,665 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:42,666 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:42,673 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:42,702 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:42,705 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:58:42,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:42,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:42,708 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 16:58:42,711 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 16:58:42,712 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 16:58:42,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:42,723 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:42,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:42,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:42,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:42,727 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:42,727 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:42,729 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:58:42,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:42,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:42,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:42,737 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 16:58:42,738 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 16:58:42,739 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 16:58:42,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:42,749 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:42,749 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:42,749 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:42,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:42,750 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:42,750 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:42,752 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:58:42,756 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:58:42,756 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:58:42,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:42,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:42,759 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 16:58:42,761 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 16:58:42,762 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:58:42,765 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 16:58:42,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:58:42,766 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:58:42,766 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:58:42,767 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-04-26 16:58:42,773 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 16:58:42,775 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:58:42,791 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:42,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:58:42,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:58:42,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:42,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:42,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:58:42,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:42,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:42,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:42,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:42,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:42,809 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:58:42,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:42,854 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 16:58:42,877 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 16:58:42,883 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 16:58:43,093 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 16:58:43,094 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 16:58:43,098 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 16:58:43,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-04-26 16:58:43,102 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 99 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 16:58:43,103 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:43,103 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 99 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:58:43,103 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:43,103 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 99 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 16:58:43,103 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:43,104 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5964 states and 12062 transitions. [2025-04-26 16:58:43,181 INFO L131 ngComponentsAnalysis]: Automaton has 422 accepting balls. 1672 [2025-04-26 16:58:43,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5964 states to 4180 states and 8737 transitions. [2025-04-26 16:58:43,215 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2931 [2025-04-26 16:58:43,220 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3432 [2025-04-26 16:58:43,221 INFO L74 IsDeterministic]: Start isDeterministic. Operand 4180 states and 8737 transitions. [2025-04-26 16:58:43,221 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:58:43,221 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4180 states and 8737 transitions. [2025-04-26 16:58:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states and 8737 transitions. [2025-04-26 16:58:43,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 3070. [2025-04-26 16:58:43,361 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 16:58:43,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 6596 transitions. [2025-04-26 16:58:43,371 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3070 states and 6596 transitions. [2025-04-26 16:58:43,371 INFO L438 stractBuchiCegarLoop]: Abstraction has 3070 states and 6596 transitions. [2025-04-26 16:58:43,371 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:58:43,371 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3070 states and 6596 transitions. [2025-04-26 16:58:43,385 INFO L131 ngComponentsAnalysis]: Automaton has 327 accepting balls. 1381 [2025-04-26 16:58:43,385 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:58:43,385 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:58:43,385 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:58:43,386 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:58:43,386 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] $Ultimate##0-->L45: Formula: (and (= v_l_17 0) (< 0 v_l_18)) InVars {l=v_l_18} OutVars{l=v_l_17} AuxVars[] AssignedVars[l]" [2025-04-26 16:58:43,386 INFO L754 eck$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 16:58:43,386 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:43,386 INFO L85 PathProgramCache]: Analyzing trace with hash 156965, now seen corresponding path program 1 times [2025-04-26 16:58:43,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:43,387 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348918010] [2025-04-26 16:58:43,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:43,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:43,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:43,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:43,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:43,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:43,390 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:43,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:43,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:43,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:43,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:43,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:43,392 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:43,393 INFO L85 PathProgramCache]: Analyzing trace with hash 136108, now seen corresponding path program 1 times [2025-04-26 16:58:43,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:43,393 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490827482] [2025-04-26 16:58:43,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:43,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:43,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:43,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:43,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:43,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:43,395 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:43,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:43,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:43,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:43,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:43,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:43,398 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:43,398 INFO L85 PathProgramCache]: Analyzing trace with hash 381283336, now seen corresponding path program 1 times [2025-04-26 16:58:43,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:43,398 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285651295] [2025-04-26 16:58:43,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:43,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:43,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:58:43,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:58:43,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:43,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:43,402 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:43,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:58:43,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:58:43,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:43,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:43,405 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:43,423 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:43,423 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:43,423 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:43,423 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:43,423 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:58:43,423 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:43,423 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:43,423 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:43,423 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:58:43,423 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:43,423 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:43,424 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:43,427 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:43,448 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:43,448 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:58:43,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:43,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:43,451 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 16:58:43,452 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 16:58:43,453 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:43,454 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:43,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:43,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:43,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:43,472 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 16:58:43,472 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 16:58:43,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:43,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:43,497 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:58:43,497 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 16:58:43,503 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 16:58:43,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:43,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:43,505 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 16:58:43,505 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 16:58:43,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:43,507 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:43,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:43,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:43,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:43,527 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 16:58:43,527 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 16:58:43,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:43,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:43,592 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:58:43,596 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 16:58:43,597 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:43,597 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:43,597 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:43,597 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:43,597 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:58:43,597 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:43,597 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:43,597 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:43,597 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:58:43,597 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:43,597 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:43,598 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:43,601 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:43,627 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:43,627 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:58:43,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:43,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:43,629 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 16:58:43,630 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 16:58:43,632 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 16:58:43,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:43,642 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:43,642 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:43,642 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:43,642 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:43,642 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:43,642 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:43,644 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:58:43,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 16:58:43,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:43,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:43,652 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 16:58:43,653 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 16:58:43,655 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 16:58:43,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:43,665 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:43,665 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:43,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:43,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:43,666 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:43,666 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:43,668 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:58:43,672 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:58:43,673 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:58:43,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:43,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:43,675 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 16:58:43,676 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 16:58:43,677 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:58:43,680 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 16:58:43,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:43,681 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:58:43,682 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:58:43,682 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-04-26 16:58:43,688 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 16:58:43,689 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:58:43,699 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:43,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:43,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:43,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:43,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:43,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:58:43,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:43,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:43,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:43,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:43,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:43,713 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:58:43,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:43,737 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 16:58:43,738 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 16:58:43,738 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 16:58:43,875 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 16:58:43,875 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 16:58:43,875 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 16:58:43,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-04-26 16:58:43,876 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 99 transitions. Stem has 3 letters. Loop has 3 letters. [2025-04-26 16:58:43,876 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:43,876 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 99 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 16:58:43,876 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:43,876 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 99 transitions. Stem has 3 letters. Loop has 6 letters. [2025-04-26 16:58:43,876 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:43,876 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8910 states and 19290 transitions. [2025-04-26 16:58:44,010 INFO L131 ngComponentsAnalysis]: Automaton has 413 accepting balls. 1626 [2025-04-26 16:58:44,068 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8910 states to 7071 states and 15739 transitions. [2025-04-26 16:58:44,069 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3501 [2025-04-26 16:58:44,078 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4085 [2025-04-26 16:58:44,078 INFO L74 IsDeterministic]: Start isDeterministic. Operand 7071 states and 15739 transitions. [2025-04-26 16:58:44,078 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:58:44,078 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7071 states and 15739 transitions. [2025-04-26 16:58:44,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states and 15739 transitions. [2025-04-26 16:58:44,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 5403. [2025-04-26 16:58:44,234 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 16:58:44,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 12515 transitions. [2025-04-26 16:58:44,249 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5403 states and 12515 transitions. [2025-04-26 16:58:44,249 INFO L438 stractBuchiCegarLoop]: Abstraction has 5403 states and 12515 transitions. [2025-04-26 16:58:44,249 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:58:44,249 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5403 states and 12515 transitions. [2025-04-26 16:58:44,274 INFO L131 ngComponentsAnalysis]: Automaton has 349 accepting balls. 1429 [2025-04-26 16:58:44,274 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:58:44,274 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:58:44,275 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:58:44,275 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:58:44,275 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] $Ultimate##0-->L61: Formula: (and (= v_l_21 0) (< 0 v_l_22)) InVars {l=v_l_22} OutVars{l=v_l_21} AuxVars[] AssignedVars[l]" [2025-04-26 16:58:44,275 INFO L754 eck$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 16:58:44,275 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:44,275 INFO L85 PathProgramCache]: Analyzing trace with hash 4866926, now seen corresponding path program 1 times [2025-04-26 16:58:44,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:44,276 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886319987] [2025-04-26 16:58:44,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:44,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:44,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:44,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:44,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:44,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:44,281 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:44,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:44,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:44,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:44,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:44,288 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:44,288 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:44,289 INFO L85 PathProgramCache]: Analyzing trace with hash 143059, now seen corresponding path program 1 times [2025-04-26 16:58:44,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:44,289 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407856345] [2025-04-26 16:58:44,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:44,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:44,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:44,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:44,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:44,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:44,298 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:44,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:44,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:44,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:44,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:44,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:44,304 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1038182330, now seen corresponding path program 1 times [2025-04-26 16:58:44,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:44,304 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502889944] [2025-04-26 16:58:44,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:44,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:44,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:58:44,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:58:44,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:44,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:44,313 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:44,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:58:44,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:58:44,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:44,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:44,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:44,341 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:44,341 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:44,341 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:44,341 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:44,341 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:58:44,341 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:44,341 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:44,341 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:44,341 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:58:44,341 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:44,341 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:44,341 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:44,344 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:44,367 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:44,367 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:58:44,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:44,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:44,369 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 16:58:44,371 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 16:58:44,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:44,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:44,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-04-26 16:58:44,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:44,391 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 16:58:44,393 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 16:58:44,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:44,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:44,419 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:58:44,419 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 16:58:44,425 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 16:58:44,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:44,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:44,428 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 16:58:44,429 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 16:58:44,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:44,430 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:44,447 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 16:58:44,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:44,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:44,450 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 16:58:44,451 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 16:58:44,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:44,452 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:44,519 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:58:44,524 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 16:58:44,524 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:44,524 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:44,524 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:44,525 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:44,525 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:58:44,525 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:44,525 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:44,525 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:44,525 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:58:44,525 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:44,525 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:44,525 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:44,528 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:44,553 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:44,553 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:58:44,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:44,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:44,555 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 16:58:44,557 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 16:58:44,558 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 16:58:44,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:44,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:44,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:44,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:44,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:44,569 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:44,569 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:44,573 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:58:44,579 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 16:58:44,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:44,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:44,581 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 16:58:44,584 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 16:58:44,585 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 16:58:44,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:44,596 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:44,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:44,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:44,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:44,597 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:44,597 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:44,599 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:58:44,602 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:58:44,602 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:58:44,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:44,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:44,605 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 16:58:44,606 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 16:58:44,608 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:58:44,611 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 16:58:44,612 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:58:44,612 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:58:44,612 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-04-26 16:58:44,618 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 16:58:44,619 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:58:44,628 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:44,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:44,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:44,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:44,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:44,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:58:44,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:44,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:44,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:44,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:44,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:44,645 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:58:44,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:44,674 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 16:58:44,675 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 16:58:44,675 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 16:58:44,943 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 16:58:44,943 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 16:58:44,944 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 16:58:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-04-26 16:58:44,944 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 101 transitions. Stem has 4 letters. Loop has 3 letters. [2025-04-26 16:58:44,945 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:44,945 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 101 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 16:58:44,945 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:44,945 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 101 transitions. Stem has 4 letters. Loop has 6 letters. [2025-04-26 16:58:44,945 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:44,945 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16131 states and 37049 transitions. [2025-04-26 16:58:45,073 INFO L131 ngComponentsAnalysis]: Automaton has 442 accepting balls. 1712 [2025-04-26 16:58:45,166 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16131 states to 12436 states and 29357 transitions. [2025-04-26 16:58:45,166 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4481 [2025-04-26 16:58:45,176 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5063 [2025-04-26 16:58:45,176 INFO L74 IsDeterministic]: Start isDeterministic. Operand 12436 states and 29357 transitions. [2025-04-26 16:58:45,176 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:58:45,176 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12436 states and 29357 transitions. [2025-04-26 16:58:45,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12436 states and 29357 transitions. [2025-04-26 16:58:45,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12436 to 9898. [2025-04-26 16:58:45,432 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 16:58:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9898 states to 9898 states and 24187 transitions. [2025-04-26 16:58:45,520 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9898 states and 24187 transitions. [2025-04-26 16:58:45,520 INFO L438 stractBuchiCegarLoop]: Abstraction has 9898 states and 24187 transitions. [2025-04-26 16:58:45,520 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:58:45,520 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9898 states and 24187 transitions. [2025-04-26 16:58:45,568 INFO L131 ngComponentsAnalysis]: Automaton has 383 accepting balls. 1522 [2025-04-26 16:58:45,568 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:58:45,568 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:58:45,569 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:58:45,569 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:58:45,569 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] $Ultimate##0-->L77: Formula: (and (< 0 v_l_26) (= v_l_25 0)) InVars {l=v_l_26} OutVars{l=v_l_25} AuxVars[] AssignedVars[l]" [2025-04-26 16:58:45,569 INFO L754 eck$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 16:58:45,570 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:45,570 INFO L85 PathProgramCache]: Analyzing trace with hash 150875600, now seen corresponding path program 1 times [2025-04-26 16:58:45,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:45,570 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301298771] [2025-04-26 16:58:45,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:45,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:45,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:58:45,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:58:45,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:45,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:45,576 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:45,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:58:45,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:58:45,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:45,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:45,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:45,586 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:45,586 INFO L85 PathProgramCache]: Analyzing trace with hash 150010, now seen corresponding path program 1 times [2025-04-26 16:58:45,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:45,586 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217901527] [2025-04-26 16:58:45,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:45,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:45,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:45,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:45,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:45,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:45,589 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:45,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:45,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:45,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:45,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:45,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:45,592 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:45,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2095639093, now seen corresponding path program 1 times [2025-04-26 16:58:45,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:45,592 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738410589] [2025-04-26 16:58:45,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:45,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:45,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:58:45,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:58:45,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:45,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:45,596 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:45,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:58:45,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:58:45,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:45,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:45,600 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:45,616 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:45,616 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:45,616 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:45,617 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:45,617 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:58:45,617 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:45,617 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:45,617 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:45,617 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:58:45,617 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:45,617 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:45,617 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:45,622 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:45,641 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:45,641 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:58:45,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:45,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:45,644 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 16:58:45,646 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 16:58:45,647 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:45,647 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:45,663 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 16:58:45,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:45,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:45,666 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 16:58:45,667 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 16:58:45,669 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:45,669 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:45,736 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:58:45,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:45,741 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:45,741 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:45,741 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:45,741 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:45,741 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:58:45,741 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:45,741 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:45,741 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:45,741 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:58:45,741 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:45,741 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:45,742 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:45,748 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:45,767 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:45,767 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:58:45,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:45,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:45,769 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 16:58:45,771 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 16:58:45,772 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 16:58:45,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:45,782 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:45,782 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:45,782 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:45,782 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:45,783 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:45,783 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:45,785 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:58:45,787 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:58:45,787 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:58:45,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:45,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:45,789 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 16:58:45,790 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 16:58:45,791 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:58:45,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2025-04-26 16:58:45,795 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:58:45,795 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:58:45,795 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-04-26 16:58:45,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-04-26 16:58:45,802 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:58:45,812 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:45,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:58:45,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:58:45,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:45,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:45,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:58:45,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:45,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:45,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:45,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:45,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:45,831 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:58:45,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:45,861 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 16:58:45,862 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 16:58:45,862 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 16:58:46,122 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 16:58:46,123 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 16:58:46,123 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 16:58:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-04-26 16:58:46,123 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:58:46,124 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:46,124 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 8 letters. Loop has 3 letters. [2025-04-26 16:58:46,124 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:46,124 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 5 letters. Loop has 6 letters. [2025-04-26 16:58:46,124 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:46,124 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27782 states and 63994 transitions. [2025-04-26 16:58:46,392 INFO L131 ngComponentsAnalysis]: Automaton has 549 accepting balls. 2010 [2025-04-26 16:58:46,625 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27782 states to 21950 states and 51986 transitions. [2025-04-26 16:58:46,625 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5812 [2025-04-26 16:58:46,635 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6293 [2025-04-26 16:58:46,635 INFO L74 IsDeterministic]: Start isDeterministic. Operand 21950 states and 51986 transitions. [2025-04-26 16:58:46,635 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:58:46,635 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21950 states and 51986 transitions. [2025-04-26 16:58:46,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21950 states and 51986 transitions. [2025-04-26 16:58:46,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21950 to 18059. [2025-04-26 16:58:46,977 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 16:58:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18059 states to 18059 states and 44574 transitions. [2025-04-26 16:58:47,040 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18059 states and 44574 transitions. [2025-04-26 16:58:47,040 INFO L438 stractBuchiCegarLoop]: Abstraction has 18059 states and 44574 transitions. [2025-04-26 16:58:47,040 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:58:47,040 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18059 states and 44574 transitions. [2025-04-26 16:58:47,123 INFO L131 ngComponentsAnalysis]: Automaton has 437 accepting balls. 1667 [2025-04-26 16:58:47,123 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:58:47,124 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:58:47,124 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:58:47,124 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:58:47,125 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] $Ultimate##0-->L45: Formula: (and (= v_l_17 0) (< 0 v_l_18)) InVars {l=v_l_18} OutVars{l=v_l_17} AuxVars[] AssignedVars[l]" "[104] L32-->L29: Formula: (= v_x2_2 (+ v_x2_1 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" [2025-04-26 16:58:47,125 INFO L754 eck$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 16:58:47,125 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:47,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1986084255, now seen corresponding path program 1 times [2025-04-26 16:58:47,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:47,125 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929645226] [2025-04-26 16:58:47,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:47,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:47,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:58:47,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:58:47,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:47,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:47,160 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 16:58:47,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:58:47,160 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929645226] [2025-04-26 16:58:47,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929645226] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:58:47,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:58:47,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-26 16:58:47,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357616703] [2025-04-26 16:58:47,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:58:47,164 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:58:47,164 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:47,164 INFO L85 PathProgramCache]: Analyzing trace with hash 136108, now seen corresponding path program 2 times [2025-04-26 16:58:47,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:47,164 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871708574] [2025-04-26 16:58:47,164 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 16:58:47,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:47,167 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:47,168 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:47,168 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 16:58:47,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:47,168 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:47,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:47,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:47,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:47,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:47,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:47,194 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:47,195 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:47,195 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:47,195 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:47,195 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:58:47,195 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:47,195 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:47,195 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:47,195 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:58:47,195 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:47,195 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:47,195 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:47,200 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:47,222 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:47,223 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:58:47,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:47,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:47,225 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 16:58:47,227 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 16:58:47,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:47,228 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:47,245 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 16:58:47,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:47,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:47,247 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 16:58:47,248 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 16:58:47,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:47,249 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:47,313 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:58:47,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2025-04-26 16:58:47,318 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:47,318 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:47,318 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:47,318 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:47,318 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:58:47,318 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:47,318 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:47,318 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:47,318 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:58:47,318 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:47,318 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:47,319 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:47,324 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:47,346 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:47,346 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:58:47,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:47,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:47,348 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 16:58:47,350 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 16:58:47,351 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 16:58:47,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:47,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:47,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:47,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:47,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:47,365 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:47,365 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:47,369 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:58:47,372 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:58:47,373 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:58:47,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:47,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:47,375 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 16:58:47,376 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 16:58:47,377 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:58:47,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:47,382 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:58:47,382 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:58:47,382 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-04-26 16:58:47,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:47,389 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:58:47,401 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:47,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:58:47,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:58:47,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:47,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:47,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:58:47,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:47,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:47,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:47,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:47,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:47,423 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:58:47,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:47,448 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 16:58:47,449 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 16:58:47,450 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 16:58:47,947 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 16:58:47,948 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 16:58:47,948 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 16:58:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-04-26 16:58:47,949 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 112 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 16:58:47,949 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:47,949 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 112 transitions. Stem has 10 letters. Loop has 3 letters. [2025-04-26 16:58:47,949 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:47,949 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 112 transitions. Stem has 7 letters. Loop has 6 letters. [2025-04-26 16:58:47,949 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:47,949 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68436 states and 163545 transitions. [2025-04-26 16:58:48,718 INFO L131 ngComponentsAnalysis]: Automaton has 692 accepting balls. 2487 [2025-04-26 16:58:49,141 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68436 states to 55206 states and 131151 transitions. [2025-04-26 16:58:49,141 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11591 [2025-04-26 16:58:49,166 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12881 [2025-04-26 16:58:49,167 INFO L74 IsDeterministic]: Start isDeterministic. Operand 55206 states and 131151 transitions. [2025-04-26 16:58:49,167 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:58:49,167 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55206 states and 131151 transitions. [2025-04-26 16:58:49,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55206 states and 131151 transitions. [2025-04-26 16:58:49,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55206 to 31078. [2025-04-26 16:58:49,974 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 16:58:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31078 states to 31078 states and 80798 transitions. [2025-04-26 16:58:50,152 INFO L240 hiAutomatonCegarLoop]: Abstraction has 31078 states and 80798 transitions. [2025-04-26 16:58:50,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:58:50,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:58:50,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:58:50,156 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 16:58:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:58:50,189 INFO L93 Difference]: Finished difference Result 522 states and 801 transitions. [2025-04-26 16:58:50,189 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 522 states and 801 transitions. [2025-04-26 16:58:50,191 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:58:50,191 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 522 states to 0 states and 0 transitions. [2025-04-26 16:58:50,191 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:58:50,191 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:58:50,191 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:58:50,191 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:58:50,191 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:58:50,191 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:58:50,192 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:58:50,192 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:58:50,192 INFO L340 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-04-26 16:58:50,193 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:58:50,193 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:58:50,193 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:58:50,204 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 16:58:50,206 INFO L201 PluginConnector]: Adding new model lock4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:58:50 BoogieIcfgContainer [2025-04-26 16:58:50,206 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:58:50,206 INFO L158 Benchmark]: Toolchain (without parser) took 9152.91ms. Allocated memory was 159.4MB in the beginning and 1.1GB in the end (delta: 931.1MB). Free memory was 86.5MB in the beginning and 607.7MB in the end (delta: -521.1MB). Peak memory consumption was 410.9MB. Max. memory is 8.0GB. [2025-04-26 16:58:50,207 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:58:50,207 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.26ms. Allocated memory is still 159.4MB. Free memory was 86.5MB in the beginning and 84.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:58:50,207 INFO L158 Benchmark]: Boogie Preprocessor took 18.02ms. Allocated memory is still 159.4MB. Free memory was 84.6MB in the beginning and 83.6MB in the end (delta: 917.6kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:58:50,207 INFO L158 Benchmark]: RCFGBuilder took 179.91ms. Allocated memory is still 159.4MB. Free memory was 83.5MB in the beginning and 73.5MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:58:50,207 INFO L158 Benchmark]: BuchiAutomizer took 8914.41ms. Allocated memory was 159.4MB in the beginning and 1.1GB in the end (delta: 931.1MB). Free memory was 73.5MB in the beginning and 607.7MB in the end (delta: -534.2MB). Peak memory consumption was 398.3MB. Max. memory is 8.0GB. [2025-04-26 16:58:50,208 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 0.14ms. Allocated memory is still 159.4MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.26ms. Allocated memory is still 159.4MB. Free memory was 86.5MB in the beginning and 84.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 18.02ms. Allocated memory is still 159.4MB. Free memory was 84.6MB in the beginning and 83.6MB in the end (delta: 917.6kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 179.91ms. Allocated memory is still 159.4MB. Free memory was 83.5MB in the beginning and 73.5MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 8914.41ms. Allocated memory was 159.4MB in the beginning and 1.1GB in the end (delta: 931.1MB). Free memory was 73.5MB in the beginning and 607.7MB in the end (delta: -534.2MB). Peak memory consumption was 398.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.8s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.2s. Büchi inclusion checks took 1.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 2.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 33335 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 2.2s 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, 390 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 385 mSDsluCounter, 427 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 191 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 429 IncrementalHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 236 mSDtfsCounter, 429 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: 23ms 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]: 703, 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 16:58:50,223 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...