/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/bb2.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:56:33,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:56:33,314 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:56:33,319 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:56:33,319 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:56:33,319 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:56:33,319 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:56:33,336 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:56:33,337 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:56:33,337 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:56:33,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:56:33,338 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:56:33,338 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:56:33,338 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:56:33,338 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:56:33,338 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:56:33,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:56:33,339 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:56:33,340 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:56:33,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:56:33,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:56:33,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:56:33,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:56:33,340 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:56:33,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:56:33,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:56:33,340 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:56:33,340 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:56:33,340 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:56:33,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:56:33,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:56:33,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:56:33,552 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:56:33,552 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:56:33,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/bb2.c.bpl [2025-04-26 16:56:33,554 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/bb2.c.bpl' [2025-04-26 16:56:33,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:56:33,568 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:56:33,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:56:33,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:56:33,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:56:33,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:33" (1/1) ... [2025-04-26 16:56:33,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:33" (1/1) ... [2025-04-26 16:56:33,601 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:56:33,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:56:33,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:56:33,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:56:33,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:56:33,607 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:33" (1/1) ... [2025-04-26 16:56:33,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:33" (1/1) ... [2025-04-26 16:56:33,608 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:33" (1/1) ... [2025-04-26 16:56:33,608 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:33" (1/1) ... [2025-04-26 16:56:33,609 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:33" (1/1) ... [2025-04-26 16:56:33,609 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:33" (1/1) ... [2025-04-26 16:56:33,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:33" (1/1) ... [2025-04-26 16:56:33,612 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:33" (1/1) ... [2025-04-26 16:56:33,612 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:33" (1/1) ... [2025-04-26 16:56:33,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:56:33,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:56:33,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:56:33,621 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:56:33,621 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:33" (1/1) ... [2025-04-26 16:56:33,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:56:33,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:33,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:33,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 16:56:33,667 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:56:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:56:33,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:56:33,668 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:56:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:56:33,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:56:33,668 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:56:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:56:33,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:56:33,668 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:56:33,704 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:56:33,705 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:56:33,762 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:56:33,762 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:56:33,768 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:56:33,768 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:56:33,768 INFO L201 PluginConnector]: Adding new model bb2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:56:33 BoogieIcfgContainer [2025-04-26 16:56:33,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:56:33,769 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:56:33,769 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:56:33,773 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:56:33,773 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:56:33,773 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:33" (1/2) ... [2025-04-26 16:56:33,774 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57442c1e and model type bb2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:56:33, skipping insertion in model container [2025-04-26 16:56:33,774 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:56:33,774 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:56:33" (2/2) ... [2025-04-26 16:56:33,775 INFO L376 chiAutomizerObserver]: Analyzing ICFG bb2.c.bpl [2025-04-26 16:56:33,817 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 16:56:33,857 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:56:33,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:56:33,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:33,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:33,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 16:56:33,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 17 transitions, 48 flow [2025-04-26 16:56:33,916 INFO L116 PetriNetUnfolderBase]: 2/13 cut-off events. [2025-04-26 16:56:33,919 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 16:56:33,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 13 events. 2/13 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-04-26 16:56:33,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 17 transitions, 48 flow [2025-04-26 16:56:33,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 18 places, 13 transitions, 38 flow [2025-04-26 16:56:33,925 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 18 places, 13 transitions, 38 flow [2025-04-26 16:56:33,930 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:56:33,988 WARN L140 AmpleReduction]: Number of pruned transitions: 6 [2025-04-26 16:56:33,988 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 16:56:33,988 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 3 [2025-04-26 16:56:33,989 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:17 [2025-04-26 16:56:33,989 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:6 [2025-04-26 16:56:33,989 WARN L145 AmpleReduction]: Times succ was already a loop node:10 [2025-04-26 16:56:33,989 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:0 [2025-04-26 16:56:33,989 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:56:33,991 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (in total 45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:33,997 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:56:33,997 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:56:33,997 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:56:33,998 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:56:33,998 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:56:33,998 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:56:33,998 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:56:33,998 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:56:33,999 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (in total 45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:34,008 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 16 [2025-04-26 16:56:34,009 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:34,009 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:34,011 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:56:34,011 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:56:34,011 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:56:34,011 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (in total 45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:34,013 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 16 [2025-04-26 16:56:34,013 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:34,013 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:34,013 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:56:34,013 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:56:34,016 INFO L752 eck$LassoCheckResult]: Stem: "[42] $Ultimate##0-->L21: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:56:34,016 INFO L754 eck$LassoCheckResult]: Loop: "[33] L21-->L23: Formula: (< (+ v_x3_1 v_x1_1) v_z_1) InVars {x1=v_x1_1, x3=v_x3_1, z=v_z_1} OutVars{x1=v_x1_1, x3=v_x3_1, z=v_z_1} AuxVars[] AssignedVars[]" "[35] L23-->L21: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 16:56:34,019 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:34,019 INFO L85 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 1 times [2025-04-26 16:56:34,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:34,026 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979856595] [2025-04-26 16:56:34,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:34,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:34,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:56:34,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:56:34,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:34,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:34,069 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:34,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:56:34,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:56:34,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:34,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:34,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:34,086 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:34,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2019, now seen corresponding path program 1 times [2025-04-26 16:56:34,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:34,086 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780241323] [2025-04-26 16:56:34,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:34,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:34,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:34,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:34,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:34,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:34,096 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:34,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:34,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:34,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:34,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:34,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:34,105 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:34,105 INFO L85 PathProgramCache]: Analyzing trace with hash 71211, now seen corresponding path program 1 times [2025-04-26 16:56:34,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:34,105 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904592708] [2025-04-26 16:56:34,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:34,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:34,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:34,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:34,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:34,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:34,112 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:34,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:34,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:34,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:34,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:34,117 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:34,170 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:34,170 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:34,170 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:34,170 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:34,170 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:56:34,171 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:34,171 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:34,171 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:34,171 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb2.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:56:34,171 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:34,171 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:34,180 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:34,258 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:34,262 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:56:34,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:34,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:34,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:34,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:56:34,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:56:34,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:34,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:56:34,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:34,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:34,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:34,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:56:34,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:56:34,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:34,433 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:56:34,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 16:56:34,439 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:34,439 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:34,439 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:34,439 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:34,439 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:56:34,439 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:34,439 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:34,439 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:34,439 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb2.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:56:34,439 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:34,439 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:34,440 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:34,465 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:34,486 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:56:34,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:34,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:34,489 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:34,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:56:34,493 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:56:34,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:56:34,507 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:56:34,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:56:34,507 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:56:34,507 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:56:34,510 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:56:34,511 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:56:34,513 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:56:34,519 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:56:34,519 INFO L437 ModelExtractionUtils]: 0 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:56:34,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:34,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:34,543 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:34,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:56:34,545 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:56:34,549 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:56:34,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 16:56:34,551 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:56:34,552 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:56:34,552 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z, x3) = -1*x1 + 1*z - 1*x3 Supporting invariants [] [2025-04-26 16:56:34,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 16:56:34,565 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:56:34,597 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:34,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:56:34,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:56:34,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:34,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:34,616 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:56:34,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:34,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:34,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:34,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:34,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:34,639 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:56:34,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:56:34,685 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:56:34,687 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (in total 45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:34,781 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (in total 45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 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 103 states and 177 transitions. Complement of second has 7 states. [2025-04-26 16:56:34,784 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:56:34,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:34,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2025-04-26 16:56:34,794 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 41 transitions. Stem has 1 letters. Loop has 2 letters. [2025-04-26 16:56:34,797 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:34,797 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 41 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:56:34,798 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:34,798 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 41 transitions. Stem has 1 letters. Loop has 4 letters. [2025-04-26 16:56:34,798 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:34,798 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 177 transitions. [2025-04-26 16:56:34,803 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:56:34,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 0 states and 0 transitions. [2025-04-26 16:56:34,807 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:56:34,808 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:56:34,808 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:56:34,808 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:56:34,808 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:56:34,808 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:56:34,808 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:56:34,808 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:56:34,809 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:56:34,809 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:56:34,809 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:56:34,821 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 16:56:34,823 INFO L201 PluginConnector]: Adding new model bb2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:56:34 BoogieIcfgContainer [2025-04-26 16:56:34,823 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:56:34,824 INFO L158 Benchmark]: Toolchain (without parser) took 1256.13ms. Allocated memory is still 155.2MB. Free memory was 83.7MB in the beginning and 100.1MB in the end (delta: -16.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:56:34,824 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:56:34,825 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.05ms. Allocated memory is still 155.2MB. Free memory was 83.6MB in the beginning and 81.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:56:34,825 INFO L158 Benchmark]: Boogie Preprocessor took 17.07ms. Allocated memory is still 155.2MB. Free memory was 81.7MB in the beginning and 80.8MB in the end (delta: 944.1kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:56:34,828 INFO L158 Benchmark]: RCFGBuilder took 147.76ms. Allocated memory is still 155.2MB. Free memory was 80.8MB in the beginning and 72.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:56:34,828 INFO L158 Benchmark]: BuchiAutomizer took 1054.22ms. Allocated memory is still 155.2MB. Free memory was 72.2MB in the beginning and 100.1MB in the end (delta: -27.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:56:34,830 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 0.15ms. Allocated memory is still 155.2MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.05ms. Allocated memory is still 155.2MB. Free memory was 83.6MB in the beginning and 81.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 17.07ms. Allocated memory is still 155.2MB. Free memory was 81.7MB in the beginning and 80.8MB in the end (delta: 944.1kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 147.76ms. Allocated memory is still 155.2MB. Free memory was 80.8MB in the beginning and 72.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1054.22ms. Allocated memory is still 155.2MB. Free memory was 72.2MB in the beginning and 100.1MB in the end (delta: -27.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 4 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 65ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 136, Number of transitions in reduction automaton: 45, Number of states in reduction automaton: 27, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + -1 * x3 + z and consists of 5 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:56:34,845 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...