/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/2_thr/lock1.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:42:16,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:42:16,923 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:42:16,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:42:16,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:42:16,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:42:16,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:42:16,946 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:42:16,947 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:42:16,947 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:42:16,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:42:16,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:42:16,948 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:42:16,948 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:42:16,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:42:16,949 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:42:16,950 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:42:16,950 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:42:16,950 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:42:16,950 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:42:16,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:42:16,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:16,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:42:16,950 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:42:16,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:42:16,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:42:16,950 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:42:16,951 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:42:16,951 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:42:17,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:42:17,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:42:17,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:42:17,178 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:42:17,180 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:42:17,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/lock1.c.bpl [2025-04-26 18:42:17,181 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/lock1.c.bpl' [2025-04-26 18:42:17,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:42:17,197 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:42:17,197 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:17,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:42:17,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:42:17,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:17" (1/1) ... [2025-04-26 18:42:17,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:17" (1/1) ... [2025-04-26 18:42:17,231 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:42:17,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:17,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:42:17,234 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:42:17,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:42:17,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:17" (1/1) ... [2025-04-26 18:42:17,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:17" (1/1) ... [2025-04-26 18:42:17,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:17" (1/1) ... [2025-04-26 18:42:17,239 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:17" (1/1) ... [2025-04-26 18:42:17,240 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:17" (1/1) ... [2025-04-26 18:42:17,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:17" (1/1) ... [2025-04-26 18:42:17,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:17" (1/1) ... [2025-04-26 18:42:17,245 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:17" (1/1) ... [2025-04-26 18:42:17,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:17" (1/1) ... [2025-04-26 18:42:17,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:42:17,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:42:17,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:42:17,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:42:17,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:17" (1/1) ... [2025-04-26 18:42:17,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:17,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:17,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:17,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 18:42:17,307 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:42:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:42:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:42:17,307 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:42:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:42:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:42:17,307 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:42:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:42:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:42:17,308 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 18:42:17,340 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:42:17,342 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:42:17,415 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:42:17,415 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:42:17,431 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:42:17,432 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:42:17,433 INFO L201 PluginConnector]: Adding new model lock1.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:17 BoogieIcfgContainer [2025-04-26 18:42:17,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:42:17,434 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:42:17,434 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:42:17,438 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:42:17,439 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:17,439 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:17" (1/2) ... [2025-04-26 18:42:17,441 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34e4db17 and model type lock1.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:42:17, skipping insertion in model container [2025-04-26 18:42:17,441 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:17,441 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "lock1.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:17" (2/2) ... [2025-04-26 18:42:17,442 INFO L376 chiAutomizerObserver]: Analyzing ICFG lock1.c.bpl [2025-04-26 18:42:17,489 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 18:42:17,523 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:42:17,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:42:17,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:17,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:17,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 18:42:17,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 23 transitions, 60 flow [2025-04-26 18:42:17,604 INFO L116 PetriNetUnfolderBase]: 2/19 cut-off events. [2025-04-26 18:42:17,605 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 18:42:17,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 2/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2025-04-26 18:42:17,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 23 transitions, 60 flow [2025-04-26 18:42:17,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2025-04-26 18:42:17,614 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 24 places, 19 transitions, 50 flow [2025-04-26 18:42:17,615 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 19 transitions, 50 flow [2025-04-26 18:42:17,629 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 66 states, 65 states have (on average 1.9846153846153847) internal successors, (in total 129), 65 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:17,630 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 66 states, 65 states have (on average 1.9846153846153847) internal successors, (in total 129), 65 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:17,633 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:42:17,733 WARN L140 AmpleReduction]: Number of pruned transitions: 30 [2025-04-26 18:42:17,733 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:42:17,733 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 4 [2025-04-26 18:42:17,733 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:30 [2025-04-26 18:42:17,733 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:27 [2025-04-26 18:42:17,733 WARN L145 AmpleReduction]: Times succ was already a loop node:9 [2025-04-26 18:42:17,733 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:5 [2025-04-26 18:42:17,733 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:42:17,734 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 62 states, 61 states have (on average 1.5245901639344261) internal successors, (in total 93), 61 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:17,739 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:42:17,739 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:42:17,739 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:42:17,739 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:42:17,739 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:42:17,739 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:42:17,739 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:42:17,740 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:42:17,741 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 62 states, 61 states have (on average 1.5245901639344261) internal successors, (in total 93), 61 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:17,750 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 35 [2025-04-26 18:42:17,751 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:17,751 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:17,753 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:17,753 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:17,753 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:42:17,754 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 62 states, 61 states have (on average 1.5245901639344261) internal successors, (in total 93), 61 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:17,756 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 35 [2025-04-26 18:42:17,756 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:17,756 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:17,756 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:17,756 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:17,760 INFO L752 eck$LassoCheckResult]: Stem: "[66] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[50] $Ultimate##0-->L27: Formula: (and (= v_l_7 0) (< 0 v_l_8)) InVars {l=v_l_8} OutVars{l=v_l_7} AuxVars[] AssignedVars[l]" [2025-04-26 18:42:17,760 INFO L754 eck$LassoCheckResult]: Loop: "[52] L27-->L29: 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[]" "[54] L29-->L30: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[56] L30-->L27: Formula: (= v_x2_2 (+ v_x2_1 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" [2025-04-26 18:42:17,764 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:17,764 INFO L85 PathProgramCache]: Analyzing trace with hash 3057, now seen corresponding path program 1 times [2025-04-26 18:42:17,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:17,770 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543585244] [2025-04-26 18:42:17,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:17,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:17,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:17,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:17,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:17,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:17,812 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:17,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:17,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:17,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:17,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:17,825 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:17,827 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:17,827 INFO L85 PathProgramCache]: Analyzing trace with hash 81493, now seen corresponding path program 1 times [2025-04-26 18:42:17,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:17,828 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895887277] [2025-04-26 18:42:17,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:17,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:17,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:17,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:17,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:17,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:17,839 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:17,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:17,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:17,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:17,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:17,844 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:17,845 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash 91122789, now seen corresponding path program 1 times [2025-04-26 18:42:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:17,845 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048547554] [2025-04-26 18:42:17,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:17,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:42:17,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:42:17,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:17,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:17,853 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:17,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:42:17,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:42:17,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:17,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:17,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:17,922 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:17,922 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:17,923 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:17,923 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:17,923 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:17,923 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:17,923 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:17,923 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:17,923 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock1.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:17,923 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:17,923 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:17,954 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:17,970 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:18,008 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:18,009 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:18,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:18,013 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:18,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 18:42:18,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:18,016 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:18,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:18,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:18,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:18,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 18:42:18,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:18,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:18,114 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:18,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:18,119 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:18,119 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:18,119 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:18,119 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:18,119 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:18,119 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,119 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:18,119 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:18,119 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock1.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:18,119 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:18,119 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:18,120 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:18,131 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:18,166 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:18,192 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:18,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:18,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:18,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 18:42:18,198 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:18,209 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:18,209 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:18,209 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:18,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:18,210 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:18,213 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:18,213 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:18,215 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:18,222 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:42:18,222 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:42:18,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:18,225 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:18,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 18:42:18,227 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:18,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 18:42:18,230 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:18,230 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:18,231 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-04-26 18:42:18,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 18:42:18,239 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:18,269 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:18,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:18,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:18,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:18,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:18,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:18,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:18,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:18,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:18,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:18,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:18,309 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:18,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:18,376 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:42:18,378 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 62 states, 61 states have (on average 1.5245901639344261) internal successors, (in total 93), 61 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:18,450 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 62 states, 61 states have (on average 1.5245901639344261) internal successors, (in total 93), 61 states have internal predecessors, (93), 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 182 states and 297 transitions. Complement of second has 7 states. [2025-04-26 18:42:18,451 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2025-04-26 18:42:18,457 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 18:42:18,458 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:18,458 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 18:42:18,458 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:18,458 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 18:42:18,458 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:18,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 297 transitions. [2025-04-26 18:42:18,463 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 29 [2025-04-26 18:42:18,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 91 states and 156 transitions. [2025-04-26 18:42:18,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 60 [2025-04-26 18:42:18,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2025-04-26 18:42:18,467 INFO L74 IsDeterministic]: Start isDeterministic. Operand 91 states and 156 transitions. [2025-04-26 18:42:18,467 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:18,467 INFO L218 hiAutomatonCegarLoop]: Abstraction has 91 states and 156 transitions. [2025-04-26 18:42:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 156 transitions. [2025-04-26 18:42:18,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 70. [2025-04-26 18:42:18,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 70 states have (on average 1.7428571428571429) internal successors, (in total 122), 69 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 122 transitions. [2025-04-26 18:42:18,496 INFO L240 hiAutomatonCegarLoop]: Abstraction has 70 states and 122 transitions. [2025-04-26 18:42:18,496 INFO L438 stractBuchiCegarLoop]: Abstraction has 70 states and 122 transitions. [2025-04-26 18:42:18,496 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:42:18,496 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 122 transitions. [2025-04-26 18:42:18,497 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 29 [2025-04-26 18:42:18,497 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:18,497 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:18,501 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 18:42:18,502 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:18,502 INFO L752 eck$LassoCheckResult]: Stem: "[66] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[69] L13-->$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]" "[57] $Ultimate##0-->L43: Formula: (and (= v_l_11 0) (< 0 v_l_12)) InVars {l=v_l_12} OutVars{l=v_l_11} AuxVars[] AssignedVars[l]" [2025-04-26 18:42:18,502 INFO L754 eck$LassoCheckResult]: Loop: "[59] L43-->L45: 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[]" "[61] L45-->L46: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[63] L46-->L43: Formula: (= v_x1_6 (+ v_x1_5 1)) InVars {x1=v_x1_6} OutVars{x1=v_x1_5} AuxVars[] AssignedVars[x1]" [2025-04-26 18:42:18,502 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:18,503 INFO L85 PathProgramCache]: Analyzing trace with hash 95413, now seen corresponding path program 1 times [2025-04-26 18:42:18,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:18,503 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987601264] [2025-04-26 18:42:18,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:18,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:18,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:18,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:18,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:18,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:18,509 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:18,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:18,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:18,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:18,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:18,515 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:18,516 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:18,516 INFO L85 PathProgramCache]: Analyzing trace with hash 88444, now seen corresponding path program 1 times [2025-04-26 18:42:18,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:18,516 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765794047] [2025-04-26 18:42:18,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:18,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:18,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:18,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:18,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:18,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:18,523 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:18,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:18,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:18,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:18,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:18,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:18,529 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:18,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1452459960, now seen corresponding path program 1 times [2025-04-26 18:42:18,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:18,530 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339914012] [2025-04-26 18:42:18,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:18,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:18,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:18,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:18,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:18,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:18,538 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:18,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:18,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:18,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:18,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:18,547 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:18,580 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:18,580 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:18,580 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:18,580 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:18,580 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:18,580 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,580 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:18,580 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:18,580 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock1.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:18,580 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:18,580 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:18,581 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:18,583 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:18,611 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:18,612 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:18,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:18,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:18,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 18:42:18,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:18,617 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:18,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 18:42:18,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:18,637 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:18,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 18:42:18,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:18,641 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:18,668 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:18,668 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x1=0} Honda state: {x1=0} Generalized eigenvectors: [{x1=-1}, {x1=7}, {x1=-7}] Lambdas: [1, 2, 1] Nus: [0, 1] [2025-04-26 18:42:18,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 18:42:18,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:18,676 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:18,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 18:42:18,678 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:18,678 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:18,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 18:42:18,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:18,698 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:18,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 18:42:18,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:18,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:18,770 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:18,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 18:42:18,774 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:18,775 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:18,775 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:18,775 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:18,775 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:18,775 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,775 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:18,775 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:18,775 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock1.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:18,775 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:18,775 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:18,776 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:18,784 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:18,812 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:18,812 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:18,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:18,814 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:18,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 18:42:18,816 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:18,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:18,826 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:18,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:18,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:18,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:18,827 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:18,827 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:18,829 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:18,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 18:42:18,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:18,836 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:18,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 18:42:18,837 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:18,847 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:18,847 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:18,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:18,847 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:18,847 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:18,849 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:18,849 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:18,853 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:18,856 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:42:18,856 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:42:18,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:18,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:18,858 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:18,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 18:42:18,861 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:18,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 18:42:18,865 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:18,865 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:18,865 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-04-26 18:42:18,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 18:42:18,873 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:18,886 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:18,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:18,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:18,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:18,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:18,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:18,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:18,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:18,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:18,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:18,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:18,901 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:18,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:18,938 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:42:18,938 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 122 transitions. cyclomatic complexity: 64 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:18,974 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 122 transitions. cyclomatic complexity: 64. 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 181 states and 296 transitions. Complement of second has 7 states. [2025-04-26 18:42:18,974 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2025-04-26 18:42:18,975 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 3 letters. Loop has 3 letters. [2025-04-26 18:42:18,975 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:18,975 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 18:42:18,975 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:18,975 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 3 letters. Loop has 6 letters. [2025-04-26 18:42:18,975 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:18,975 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 181 states and 296 transitions. [2025-04-26 18:42:18,978 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 26 [2025-04-26 18:42:18,979 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 181 states to 123 states and 200 transitions. [2025-04-26 18:42:18,979 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2025-04-26 18:42:18,979 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2025-04-26 18:42:18,979 INFO L74 IsDeterministic]: Start isDeterministic. Operand 123 states and 200 transitions. [2025-04-26 18:42:18,979 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:18,979 INFO L218 hiAutomatonCegarLoop]: Abstraction has 123 states and 200 transitions. [2025-04-26 18:42:18,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 200 transitions. [2025-04-26 18:42:18,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2025-04-26 18:42:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.6666666666666667) internal successors, (in total 175), 104 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 175 transitions. [2025-04-26 18:42:18,984 INFO L240 hiAutomatonCegarLoop]: Abstraction has 105 states and 175 transitions. [2025-04-26 18:42:18,984 INFO L438 stractBuchiCegarLoop]: Abstraction has 105 states and 175 transitions. [2025-04-26 18:42:18,985 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:42:18,985 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 175 transitions. [2025-04-26 18:42:18,986 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 26 [2025-04-26 18:42:18,986 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:18,986 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:18,986 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:42:18,986 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:18,986 INFO L752 eck$LassoCheckResult]: Stem: "[66] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[50] $Ultimate##0-->L27: Formula: (and (= v_l_7 0) (< 0 v_l_8)) InVars {l=v_l_8} OutVars{l=v_l_7} AuxVars[] AssignedVars[l]" "[69] L13-->$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]" "[57] $Ultimate##0-->L43: Formula: (and (= v_l_11 0) (< 0 v_l_12)) InVars {l=v_l_12} OutVars{l=v_l_11} AuxVars[] AssignedVars[l]" "[59] L43-->L45: Formula: (< v_x2_3 v_z_3) InVars {x2=v_x2_3, z=v_z_3} OutVars{x2=v_x2_3, z=v_z_3} AuxVars[] AssignedVars[]" "[61] L45-->L46: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[63] L46-->L43: Formula: (= v_x1_6 (+ v_x1_5 1)) InVars {x1=v_x1_6} OutVars{x1=v_x1_5} AuxVars[] AssignedVars[x1]" "[58] L43-->L48: Formula: (<= v_z_4 v_x2_6) InVars {x2=v_x2_6, z=v_z_4} OutVars{x2=v_x2_6, z=v_z_4} AuxVars[] AssignedVars[]" [2025-04-26 18:42:18,986 INFO L754 eck$LassoCheckResult]: Loop: "[52] L27-->L29: 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[]" "[54] L29-->L30: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[56] L30-->L27: Formula: (= v_x2_2 (+ v_x2_1 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" [2025-04-26 18:42:18,987 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:18,987 INFO L85 PathProgramCache]: Analyzing trace with hash 709292162, now seen corresponding path program 1 times [2025-04-26 18:42:18,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:18,987 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341599317] [2025-04-26 18:42:18,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:18,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:18,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 18:42:18,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 18:42:18,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:18,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-26 18:42:19,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 18:42:19,019 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341599317] [2025-04-26 18:42:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341599317] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 18:42:19,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 18:42:19,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-26 18:42:19,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527460880] [2025-04-26 18:42:19,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 18:42:19,023 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 18:42:19,023 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:19,023 INFO L85 PathProgramCache]: Analyzing trace with hash 81493, now seen corresponding path program 2 times [2025-04-26 18:42:19,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:19,023 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624638202] [2025-04-26 18:42:19,023 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 18:42:19,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:19,027 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:19,031 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:19,031 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 18:42:19,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:19,031 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:19,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:19,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:19,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:19,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:19,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:19,058 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:19,059 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:19,059 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:19,059 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:19,059 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:19,059 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:19,059 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:19,059 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:19,059 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock1.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:42:19,059 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:19,059 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:19,059 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:19,066 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:19,090 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:19,090 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:19,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:19,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:19,092 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:19,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 18:42:19,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:19,095 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:19,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:19,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:19,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:19,118 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:19,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 18:42:19,121 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:19,121 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:19,192 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:19,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:19,197 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:19,197 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:19,197 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:19,197 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:19,197 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:19,197 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:19,197 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:19,197 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:19,197 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock1.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:42:19,197 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:19,197 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:19,198 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:19,206 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:19,230 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:19,230 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:19,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:19,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:19,233 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:19,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 18:42:19,236 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:19,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:19,246 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:19,246 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:19,246 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:19,246 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:19,248 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:19,248 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:19,250 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:19,253 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:42:19,254 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:42:19,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:19,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:19,258 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:19,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 18:42:19,264 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:19,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:19,270 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:19,270 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:19,271 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 18:42:19,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-04-26 18:42:19,278 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:19,290 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:19,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 18:42:19,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 18:42:19,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:19,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:19,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:19,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:19,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:19,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:19,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:19,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:19,317 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:19,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:19,350 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:42:19,350 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 105 states and 175 transitions. cyclomatic complexity: 84 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (in total 11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:19,371 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 105 states and 175 transitions. cyclomatic complexity: 84. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (in total 11), 4 states have internal predecessors, (11), 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 115 states and 189 transitions. Complement of second has 6 states. [2025-04-26 18:42:19,372 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:19,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (in total 11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:19,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2025-04-26 18:42:19,372 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 8 letters. Loop has 3 letters. [2025-04-26 18:42:19,372 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:19,372 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 3 letters. [2025-04-26 18:42:19,373 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:19,373 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 8 letters. Loop has 6 letters. [2025-04-26 18:42:19,373 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:19,373 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 189 transitions. [2025-04-26 18:42:19,374 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 17 [2025-04-26 18:42:19,374 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 96 states and 160 transitions. [2025-04-26 18:42:19,375 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2025-04-26 18:42:19,375 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2025-04-26 18:42:19,375 INFO L74 IsDeterministic]: Start isDeterministic. Operand 96 states and 160 transitions. [2025-04-26 18:42:19,375 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:19,375 INFO L218 hiAutomatonCegarLoop]: Abstraction has 96 states and 160 transitions. [2025-04-26 18:42:19,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states and 160 transitions. [2025-04-26 18:42:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-04-26 18:42:19,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 96 states have (on average 1.6666666666666667) internal successors, (in total 160), 95 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:19,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 160 transitions. [2025-04-26 18:42:19,379 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96 states and 160 transitions. [2025-04-26 18:42:19,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 18:42:19,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 18:42:19,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 18:42:19,381 INFO L87 Difference]: Start difference. First operand 96 states and 160 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:19,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 18:42:19,390 INFO L93 Difference]: Finished difference Result 20 states and 28 transitions. [2025-04-26 18:42:19,390 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2025-04-26 18:42:19,390 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:19,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2025-04-26 18:42:19,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 18:42:19,390 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 18:42:19,390 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 18:42:19,390 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:42:19,390 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:19,390 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:19,391 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 18:42:19,391 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:19,391 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 18:42:19,391 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 18:42:19,391 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:19,391 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 18:42:19,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:19,403 INFO L201 PluginConnector]: Adding new model lock1.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:42:19 BoogieIcfgContainer [2025-04-26 18:42:19,403 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:42:19,404 INFO L158 Benchmark]: Toolchain (without parser) took 2206.89ms. Allocated memory was 163.6MB in the beginning and 155.2MB in the end (delta: -8.4MB). Free memory was 91.8MB in the beginning and 49.7MB in the end (delta: 42.1MB). Peak memory consumption was 32.6MB. Max. memory is 8.0GB. [2025-04-26 18:42:19,404 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.22ms. Allocated memory is still 163.6MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:19,404 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.35ms. Allocated memory is still 163.6MB. Free memory was 91.8MB in the beginning and 90.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:19,404 INFO L158 Benchmark]: Boogie Preprocessor took 19.66ms. Allocated memory is still 163.6MB. Free memory was 90.0MB in the beginning and 88.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:19,404 INFO L158 Benchmark]: RCFGBuilder took 179.37ms. Allocated memory is still 163.6MB. Free memory was 88.8MB in the beginning and 79.8MB in the end (delta: 9.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 18:42:19,405 INFO L158 Benchmark]: BuchiAutomizer took 1969.01ms. Allocated memory was 163.6MB in the beginning and 155.2MB in the end (delta: -8.4MB). Free memory was 79.5MB in the beginning and 49.7MB in the end (delta: 29.8MB). Peak memory consumption was 28.4MB. Max. memory is 8.0GB. [2025-04-26 18:42:19,406 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 0.22ms. Allocated memory is still 163.6MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.35ms. Allocated memory is still 163.6MB. Free memory was 91.8MB in the beginning and 90.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 19.66ms. Allocated memory is still 163.6MB. Free memory was 90.0MB in the beginning and 88.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 179.37ms. Allocated memory is still 163.6MB. Free memory was 88.8MB in the beginning and 79.8MB in the end (delta: 9.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * BuchiAutomizer took 1969.01ms. Allocated memory was 163.6MB in the beginning and 155.2MB in the end (delta: -8.4MB). Free memory was 79.5MB in the beginning and 49.7MB in the end (delta: 29.8MB). Peak memory consumption was 28.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 39 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 68 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 71 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73 IncrementalHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 42 mSDtfsCounter, 73 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 37ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.2s InitialAbstraction: Time to compute Ample Reduction [ms]: 214, Number of transitions in reduction automaton: 93, Number of states in reduction automaton: 62, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -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 * x1 + z and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 18:42:19,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...