/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/m1.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:56:45,702 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:56:45,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:56:45,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:56:45,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:56:45,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:56:45,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:56:45,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:56:45,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:56:45,795 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:56:45,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:56:45,796 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:56:45,796 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:56:45,796 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:56:45,796 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:56:45,796 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:56:45,796 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:56:45,796 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:56:45,796 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:56:45,796 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:56:45,796 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:56:45,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:56:45,796 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:56:45,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:56:45,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:56:45,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:56:45,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:56:45,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:56:45,797 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:56:45,797 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:56:45,797 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:56:45,797 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:56:45,797 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:56:45,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:56:45,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:56:45,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:56:45,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:56:45,797 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:56:45,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:56:45,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:56:45,797 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:56:45,798 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:56:45,798 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:56:46,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:56:46,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:56:46,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:56:46,053 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:56:46,054 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:56:46,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/m1.c.bpl [2025-04-26 16:56:46,057 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/m1.c.bpl' [2025-04-26 16:56:46,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:56:46,071 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:56:46,072 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:56:46,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:56:46,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:56:46,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "m1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:46" (1/1) ... [2025-04-26 16:56:46,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "m1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:46" (1/1) ... [2025-04-26 16:56:46,107 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:56:46,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:56:46,110 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:56:46,110 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:56:46,110 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:56:46,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "m1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:46" (1/1) ... [2025-04-26 16:56:46,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "m1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:46" (1/1) ... [2025-04-26 16:56:46,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "m1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:46" (1/1) ... [2025-04-26 16:56:46,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "m1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:46" (1/1) ... [2025-04-26 16:56:46,117 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "m1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:46" (1/1) ... [2025-04-26 16:56:46,117 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "m1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:46" (1/1) ... [2025-04-26 16:56:46,122 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "m1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:46" (1/1) ... [2025-04-26 16:56:46,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "m1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:46" (1/1) ... [2025-04-26 16:56:46,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "m1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:46" (1/1) ... [2025-04-26 16:56:46,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:56:46,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:56:46,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:56:46,135 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:56:46,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "m1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:46" (1/1) ... [2025-04-26 16:56:46,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:56:46,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:46,165 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 16:56:46,170 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 16:56:46,193 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:56:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:56:46,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:56:46,193 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:56:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:56:46,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:56:46,193 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:56:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:56:46,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:56:46,194 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 16:56:46,236 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:56:46,238 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:56:46,302 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:56:46,302 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:56:46,310 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:56:46,311 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:56:46,312 INFO L201 PluginConnector]: Adding new model m1.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:56:46 BoogieIcfgContainer [2025-04-26 16:56:46,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:56:46,314 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:56:46,314 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:56:46,319 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:56:46,319 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:56:46,319 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "m1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:46" (1/2) ... [2025-04-26 16:56:46,321 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54e3450e and model type m1.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:56:46, skipping insertion in model container [2025-04-26 16:56:46,322 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:56:46,322 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "m1.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:56:46" (2/2) ... [2025-04-26 16:56:46,324 INFO L376 chiAutomizerObserver]: Analyzing ICFG m1.c.bpl [2025-04-26 16:56:46,366 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 16:56:46,414 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:56:46,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:56:46,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:46,418 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 16:56:46,419 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 16:56:46,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 19 places, 15 transitions, 44 flow [2025-04-26 16:56:46,486 INFO L116 PetriNetUnfolderBase]: 1/11 cut-off events. [2025-04-26 16:56:46,489 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 16:56:46,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 11 events. 1/11 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 9. Up to 2 conditions per place. [2025-04-26 16:56:46,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 19 places, 15 transitions, 44 flow [2025-04-26 16:56:46,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 17 places, 11 transitions, 34 flow [2025-04-26 16:56:46,495 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 17 places, 11 transitions, 34 flow [2025-04-26 16:56:46,501 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:56:46,553 WARN L140 AmpleReduction]: Number of pruned transitions: 6 [2025-04-26 16:56:46,553 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 16:56:46,554 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 1 [2025-04-26 16:56:46,554 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:13 [2025-04-26 16:56:46,554 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:6 [2025-04-26 16:56:46,554 WARN L145 AmpleReduction]: Times succ was already a loop node:4 [2025-04-26 16:56:46,554 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:0 [2025-04-26 16:56:46,554 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:56:46,556 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 21 states, 20 states have (on average 1.45) internal successors, (in total 29), 20 states have internal predecessors, (29), 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 16:56:46,566 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:56:46,567 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:56:46,567 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:56:46,568 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:56:46,568 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:56:46,568 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:56:46,568 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:56:46,568 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:56:46,570 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.45) internal successors, (in total 29), 20 states have internal predecessors, (29), 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 16:56:46,579 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2025-04-26 16:56:46,580 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:46,580 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:46,583 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:56:46,583 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:56:46,583 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:56:46,584 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.45) internal successors, (in total 29), 20 states have internal predecessors, (29), 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 16:56:46,585 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2025-04-26 16:56:46,585 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:46,585 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:46,585 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:56:46,585 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:56:46,590 INFO L752 eck$LassoCheckResult]: Stem: "[33] $Ultimate##0-->L21: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:56:46,590 INFO L754 eck$LassoCheckResult]: Loop: "[26] L21-->L23: 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[]" "[28] 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 16:56:46,596 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:46,596 INFO L85 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 1 times [2025-04-26 16:56:46,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:46,605 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724952980] [2025-04-26 16:56:46,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:46,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:46,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:56:46,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:56:46,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:46,672 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:46,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:56:46,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:56:46,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:46,695 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:46,698 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:46,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1795, now seen corresponding path program 1 times [2025-04-26 16:56:46,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:46,699 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818871021] [2025-04-26 16:56:46,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:46,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:46,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:46,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:46,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:46,709 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:46,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:46,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:46,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:46,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:46,719 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:46,719 INFO L85 PathProgramCache]: Analyzing trace with hash 62338, now seen corresponding path program 1 times [2025-04-26 16:56:46,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:46,719 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868204951] [2025-04-26 16:56:46,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:46,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:46,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:46,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:46,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:46,731 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:46,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:46,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:46,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:46,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:46,790 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:46,791 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:46,791 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:46,791 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:46,791 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:56:46,791 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:46,791 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:46,791 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:46,792 INFO L132 ssoRankerPreferences]: Filename of dumped script: m1.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:56:46,792 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:46,792 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:46,802 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:46,849 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:46,849 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:56:46,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:46,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:46,853 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 16:56:46,855 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 16:56:46,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:56:46,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:46,878 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 16:56:46,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:46,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:46,880 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 16:56:46,882 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 16:56:46,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:56:46,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:46,959 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:56:46,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:56:46,964 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:46,965 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:46,965 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:46,965 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:46,965 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:56:46,965 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:46,965 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:46,965 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:46,965 INFO L132 ssoRankerPreferences]: Filename of dumped script: m1.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:56:46,965 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:46,965 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:46,966 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:46,996 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:46,998 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:56:46,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,002 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 16:56:47,004 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 16:56:47,006 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 16:56:47,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:56:47,018 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:56:47,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:56:47,051 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:56:47,051 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:56:47,060 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:56:47,060 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:56:47,062 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:56:47,069 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:56:47,069 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:56:47,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,074 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 16:56:47,076 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 16:56:47,076 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:56:47,079 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 16:56:47,080 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 16:56:47,080 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:56:47,081 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:56:47,081 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 16:56:47,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:56:47,091 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:56:47,120 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:47,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:56:47,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:56:47,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:47,130 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:56:47,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:47,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:47,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:47,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:47,155 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:56:47,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:47,181 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 16:56:47,220 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 16:56:47,222 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 21 states, 20 states have (on average 1.45) internal successors, (in total 29), 20 states have internal predecessors, (29), 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 16:56:47,318 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 21 states, 20 states have (on average 1.45) internal successors, (in total 29), 20 states have internal predecessors, (29), 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 33 states and 52 transitions. Complement of second has 7 states. [2025-04-26 16:56:47,319 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:56:47,322 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 16:56:47,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2025-04-26 16:56:47,326 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2025-04-26 16:56:47,326 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,326 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:56:47,326 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,326 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 4 letters. [2025-04-26 16:56:47,327 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,327 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 52 transitions. [2025-04-26 16:56:47,330 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2025-04-26 16:56:47,334 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 16 states and 27 transitions. [2025-04-26 16:56:47,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2025-04-26 16:56:47,335 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2025-04-26 16:56:47,335 INFO L74 IsDeterministic]: Start isDeterministic. Operand 16 states and 27 transitions. [2025-04-26 16:56:47,336 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:56:47,336 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 27 transitions. [2025-04-26 16:56:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 27 transitions. [2025-04-26 16:56:47,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2025-04-26 16:56:47,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (in total 25), 13 states have internal predecessors, (25), 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 16:56:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 25 transitions. [2025-04-26 16:56:47,357 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 25 transitions. [2025-04-26 16:56:47,357 INFO L438 stractBuchiCegarLoop]: Abstraction has 14 states and 25 transitions. [2025-04-26 16:56:47,357 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:56:47,357 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 25 transitions. [2025-04-26 16:56:47,358 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2025-04-26 16:56:47,358 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:47,358 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:47,358 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:56:47,358 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:56:47,359 INFO L752 eck$LassoCheckResult]: Stem: "[33] $Ultimate##0-->L21: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[36] L12-->$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]" "[29] $Ultimate##0-->thread2FINAL: Formula: (= v_x1_5 0) InVars {} OutVars{x1=v_x1_5} AuxVars[] AssignedVars[x1]" [2025-04-26 16:56:47,359 INFO L754 eck$LassoCheckResult]: Loop: "[26] L21-->L23: 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[]" "[28] 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 16:56:47,359 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash 62649, now seen corresponding path program 1 times [2025-04-26 16:56:47,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:47,361 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418515359] [2025-04-26 16:56:47,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:47,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:47,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:47,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:47,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,368 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:47,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:47,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:47,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,375 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:47,375 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1795, now seen corresponding path program 2 times [2025-04-26 16:56:47,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:47,376 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260140776] [2025-04-26 16:56:47,376 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 16:56:47,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:47,382 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:47,384 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:47,385 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 16:56:47,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,385 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:47,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:47,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:47,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:47,390 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:47,390 INFO L85 PathProgramCache]: Analyzing trace with hash 60206523, now seen corresponding path program 1 times [2025-04-26 16:56:47,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:47,390 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222519229] [2025-04-26 16:56:47,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:47,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:47,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:56:47,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:56:47,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,397 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:47,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:56:47,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:56:47,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:47,438 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:47,438 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:47,438 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:47,438 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:47,438 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:56:47,438 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,439 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:47,439 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:47,439 INFO L132 ssoRankerPreferences]: Filename of dumped script: m1.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:56:47,439 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:47,439 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:47,439 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:47,459 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:47,459 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:56:47,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,461 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:47,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:56:47,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:56:47,467 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:47,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 16:56:47,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,491 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:47,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:56:47,492 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:56:47,492 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:47,566 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:56:47,570 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 16:56:47,570 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:47,570 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:47,570 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:47,570 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:47,571 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:56:47,571 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,571 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:47,571 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:47,571 INFO L132 ssoRankerPreferences]: Filename of dumped script: m1.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:56:47,571 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:47,571 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:47,572 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:47,599 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:47,599 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:56:47,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,603 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:47,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:56:47,606 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 16:56:47,617 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:56:47,617 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:56:47,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:56:47,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:56:47,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:56:47,618 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:56:47,618 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:56:47,620 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:56:47,624 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:56:47,624 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:56:47,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,626 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:47,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:56:47,629 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:56:47,632 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:56:47,633 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 16:56:47,633 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:56:47,633 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:56:47,633 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 16:56:47,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-04-26 16:56:47,641 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:56:47,653 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:47,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:47,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:47,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:47,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:56:47,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:47,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:47,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:47,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:47,677 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:56:47,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:47,699 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 16:56:47,699 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 16:56:47,700 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 25 transitions. cyclomatic complexity: 15 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:47,729 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 25 transitions. cyclomatic complexity: 15. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 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 26 states and 41 transitions. Complement of second has 6 states. [2025-04-26 16:56:47,729 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:56:47,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:47,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2025-04-26 16:56:47,730 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:56:47,730 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,731 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:56:47,731 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,731 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 16:56:47,731 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 41 transitions. [2025-04-26 16:56:47,732 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:56:47,732 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 0 states and 0 transitions. [2025-04-26 16:56:47,732 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:56:47,732 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:56:47,732 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:56:47,732 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:56:47,732 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:56:47,733 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:56:47,733 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:56:47,733 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:56:47,733 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:56:47,733 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:56:47,733 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:56:47,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-26 16:56:47,749 INFO L201 PluginConnector]: Adding new model m1.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:56:47 BoogieIcfgContainer [2025-04-26 16:56:47,749 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:56:47,750 INFO L158 Benchmark]: Toolchain (without parser) took 1678.25ms. Allocated memory was 163.6MB in the beginning and 155.2MB in the end (delta: -8.4MB). Free memory was 91.1MB in the beginning and 90.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:56:47,750 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.87ms. Allocated memory is still 163.6MB. Free memory was 92.0MB in the beginning and 91.9MB in the end (delta: 111.9kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:56:47,750 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.05ms. Allocated memory is still 163.6MB. Free memory was 91.0MB in the beginning and 89.2MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:56:47,750 INFO L158 Benchmark]: Boogie Preprocessor took 24.14ms. Allocated memory is still 163.6MB. Free memory was 89.2MB in the beginning and 88.2MB in the end (delta: 956.1kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:56:47,750 INFO L158 Benchmark]: RCFGBuilder took 178.08ms. Allocated memory is still 163.6MB. Free memory was 88.1MB in the beginning and 79.9MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:56:47,751 INFO L158 Benchmark]: BuchiAutomizer took 1435.48ms. Allocated memory was 163.6MB in the beginning and 155.2MB in the end (delta: -8.4MB). Free memory was 79.8MB in the beginning and 90.0MB in the end (delta: -10.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:56:47,757 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 0.87ms. Allocated memory is still 163.6MB. Free memory was 92.0MB in the beginning and 91.9MB in the end (delta: 111.9kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.05ms. Allocated memory is still 163.6MB. Free memory was 91.0MB in the beginning and 89.2MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.14ms. Allocated memory is still 163.6MB. Free memory was 89.2MB in the beginning and 88.2MB in the end (delta: 956.1kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 178.08ms. Allocated memory is still 163.6MB. Free memory was 88.1MB in the beginning and 79.9MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1435.48ms. Allocated memory was 163.6MB in the beginning and 155.2MB in the end (delta: -8.4MB). Free memory was 79.8MB in the beginning and 90.0MB in the end (delta: -10.2MB). 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 1.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 8 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 82ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 145, Number of transitions in reduction automaton: 29, Number of states in reduction automaton: 21, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 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 -1 * x1 + z and consists of 4 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:56:47,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...