/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/Termination.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/pp4.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:59:00,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:59:01,017 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:59:01,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:59:01,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:59:01,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:59:01,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:59:01,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:59:01,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:59:01,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:59:01,039 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:59:01,039 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:59:01,040 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:59:01,040 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:59:01,040 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:59:01,040 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:59:01,040 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:59:01,040 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:59:01,040 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:59:01,040 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:59:01,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:59:01,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:59:01,040 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:59:01,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:59:01,040 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:59:01,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:59:01,040 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:59:01,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:59:01,041 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:59:01,041 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:59:01,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:59:01,041 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:59:01,041 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:59:01,041 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:59:01,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:59:01,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:59:01,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:59:01,041 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:59:01,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:59:01,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:59:01,041 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:59:01,042 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:59:01,042 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:59:01,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:59:01,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:59:01,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:59:01,267 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:59:01,267 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:59:01,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pp4.c.bpl [2025-04-26 16:59:01,270 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pp4.c.bpl' [2025-04-26 16:59:01,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:59:01,287 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:59:01,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:59:01,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:59:01,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:59:01,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:01" (1/1) ... [2025-04-26 16:59:01,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:01" (1/1) ... [2025-04-26 16:59:01,322 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:59:01,323 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:59:01,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:59:01,325 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:59:01,325 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:59:01,329 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:01" (1/1) ... [2025-04-26 16:59:01,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:01" (1/1) ... [2025-04-26 16:59:01,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:01" (1/1) ... [2025-04-26 16:59:01,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:01" (1/1) ... [2025-04-26 16:59:01,332 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:01" (1/1) ... [2025-04-26 16:59:01,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:01" (1/1) ... [2025-04-26 16:59:01,336 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:01" (1/1) ... [2025-04-26 16:59:01,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:01" (1/1) ... [2025-04-26 16:59:01,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:01" (1/1) ... [2025-04-26 16:59:01,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:59:01,350 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:59:01,350 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:59:01,350 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:59:01,351 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:01" (1/1) ... [2025-04-26 16:59:01,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:59:01,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:01,375 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 16:59:01,379 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 16:59:01,397 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:59:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:59:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:59:01,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:59:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:59:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:59:01,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:59:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:59:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:59:01,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:59:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:59:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:59:01,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:59:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:59:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:59:01,399 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 16:59:01,437 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:59:01,439 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:59:01,537 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:59:01,537 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:59:01,545 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:59:01,545 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:59:01,546 INFO L201 PluginConnector]: Adding new model pp4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:59:01 BoogieIcfgContainer [2025-04-26 16:59:01,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:59:01,547 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:59:01,547 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:59:01,552 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:59:01,552 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:59:01,552 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:01" (1/2) ... [2025-04-26 16:59:01,554 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@281c4a02 and model type pp4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:59:01, skipping insertion in model container [2025-04-26 16:59:01,554 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:59:01,554 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:59:01" (2/2) ... [2025-04-26 16:59:01,555 INFO L376 chiAutomizerObserver]: Analyzing ICFG pp4.c.bpl [2025-04-26 16:59:01,613 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-26 16:59:01,660 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:59:01,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:59:01,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:01,663 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 16:59:01,665 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 16:59:01,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 42 transitions, 112 flow [2025-04-26 16:59:01,750 INFO L116 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-04-26 16:59:01,751 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-26 16:59:01,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 34 events. 4/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 96 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-04-26 16:59:01,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 42 transitions, 112 flow [2025-04-26 16:59:01,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 34 transitions, 92 flow [2025-04-26 16:59:01,761 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 43 places, 34 transitions, 92 flow [2025-04-26 16:59:01,768 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:59:02,265 WARN L140 AmpleReduction]: Number of pruned transitions: 3687 [2025-04-26 16:59:02,266 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 16:59:02,266 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 438 [2025-04-26 16:59:02,266 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:30 [2025-04-26 16:59:02,266 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:1347 [2025-04-26 16:59:02,266 WARN L145 AmpleReduction]: Times succ was already a loop node:170 [2025-04-26 16:59:02,266 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:813 [2025-04-26 16:59:02,266 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:59:02,273 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 1816 states, 1815 states have (on average 1.9112947658402204) internal successors, (in total 3469), 1815 states have internal predecessors, (3469), 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 16:59:02,279 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:59:02,280 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:59:02,280 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:59:02,280 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:59:02,280 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:59:02,280 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:59:02,280 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:59:02,280 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:59:02,286 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 1816 states, 1815 states have (on average 1.9112947658402204) internal successors, (in total 3469), 1815 states have internal predecessors, (3469), 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 16:59:02,332 INFO L131 ngComponentsAnalysis]: Automaton has 190 accepting balls. 1326 [2025-04-26 16:59:02,332 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:02,332 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:02,336 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:59:02,336 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:02,337 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:59:02,340 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 1816 states, 1815 states have (on average 1.9112947658402204) internal successors, (in total 3469), 1815 states have internal predecessors, (3469), 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 16:59:02,359 INFO L131 ngComponentsAnalysis]: Automaton has 190 accepting balls. 1326 [2025-04-26 16:59:02,359 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:02,359 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:02,359 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:59:02,359 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:02,363 INFO L752 eck$LassoCheckResult]: Stem: "[73] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[106] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:59:02,364 INFO L754 eck$LassoCheckResult]: Loop: "[81] L27-->L29: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[83] L29-->L30: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[85] L30-->L27: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:02,367 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:02,367 INFO L85 PathProgramCache]: Analyzing trace with hash 3330, now seen corresponding path program 1 times [2025-04-26 16:59:02,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:02,372 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018078448] [2025-04-26 16:59:02,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:02,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:02,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:59:02,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:59:02,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:02,424 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:02,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:59:02,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:59:02,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:02,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:02,445 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:02,445 INFO L85 PathProgramCache]: Analyzing trace with hash 110290, now seen corresponding path program 1 times [2025-04-26 16:59:02,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:02,445 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537698649] [2025-04-26 16:59:02,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:02,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:02,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:02,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:02,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:02,455 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:02,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:02,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:02,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:02,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:02,463 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:02,463 INFO L85 PathProgramCache]: Analyzing trace with hash 99284529, now seen corresponding path program 1 times [2025-04-26 16:59:02,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:02,464 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2306189] [2025-04-26 16:59:02,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:02,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:02,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:59:02,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:59:02,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:02,472 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:02,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:59:02,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:59:02,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:02,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:02,542 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:02,543 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:02,543 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:02,543 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:02,543 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:02,543 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,543 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:02,543 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:02,543 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:59:02,543 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:02,543 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:02,577 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:02,595 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:02,658 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:02,658 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:02,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,662 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 16:59:02,664 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 16:59:02,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:02,665 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:02,684 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 16:59:02,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,686 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 16:59:02,688 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 16:59:02,689 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:02,690 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:02,725 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:59:02,725 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-04-26 16:59:02,731 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 16:59:02,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,734 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 16:59:02,736 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 16:59:02,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:02,737 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:02,756 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 16:59:02,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,758 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 16:59:02,759 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 16:59:02,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:02,762 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:02,834 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:02,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:02,839 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:02,839 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:02,839 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:02,839 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:02,839 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:02,839 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,840 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:02,840 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:02,840 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:59:02,840 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:02,840 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:02,840 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:02,845 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:02,879 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:02,882 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:02,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,885 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 16:59:02,887 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 16:59:02,888 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 16:59:02,899 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:02,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:02,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:02,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:02,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:02,906 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:02,906 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:02,909 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:59:02,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:59:02,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,918 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 16:59:02,919 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 16:59:02,921 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 16:59:02,932 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:02,932 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:02,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:02,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:02,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:02,933 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:02,933 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:02,936 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:02,938 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:59:02,939 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:59:02,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,943 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 16:59:02,944 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 16:59:02,945 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:02,947 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:59:02,949 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 16:59:02,949 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:02,949 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:02,950 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-04-26 16:59:02,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:02,958 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:02,976 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:02,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:59:02,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:59:02,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:02,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:02,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:02,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:02,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:02,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:02,997 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:02,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:03,051 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 16:59:03,069 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:03,073 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 1816 states, 1815 states have (on average 1.9112947658402204) internal successors, (in total 3469), 1815 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:03,240 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 1816 states, 1815 states have (on average 1.9112947658402204) internal successors, (in total 3469), 1815 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 3718 states and 7198 transitions. Complement of second has 6 states. [2025-04-26 16:59:03,241 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 16:59:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-04-26 16:59:03,249 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 16:59:03,250 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:03,250 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:59:03,250 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:03,250 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 16:59:03,250 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:03,250 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3718 states and 7198 transitions. [2025-04-26 16:59:03,282 INFO L131 ngComponentsAnalysis]: Automaton has 105 accepting balls. 549 [2025-04-26 16:59:03,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3718 states to 2155 states and 4098 transitions. [2025-04-26 16:59:03,309 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1072 [2025-04-26 16:59:03,315 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1382 [2025-04-26 16:59:03,316 INFO L74 IsDeterministic]: Start isDeterministic. Operand 2155 states and 4098 transitions. [2025-04-26 16:59:03,316 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:59:03,316 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2155 states and 4098 transitions. [2025-04-26 16:59:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states and 4098 transitions. [2025-04-26 16:59:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2000. [2025-04-26 16:59:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 2000 states have (on average 1.9715) internal successors, (in total 3943), 1999 states have internal predecessors, (3943), 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 16:59:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 3943 transitions. [2025-04-26 16:59:03,409 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2000 states and 3943 transitions. [2025-04-26 16:59:03,409 INFO L438 stractBuchiCegarLoop]: Abstraction has 2000 states and 3943 transitions. [2025-04-26 16:59:03,409 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:59:03,409 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2000 states and 3943 transitions. [2025-04-26 16:59:03,418 INFO L131 ngComponentsAnalysis]: Automaton has 105 accepting balls. 549 [2025-04-26 16:59:03,418 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:03,418 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:03,418 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 16:59:03,418 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:03,419 INFO L752 eck$LassoCheckResult]: Stem: "[73] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[106] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[80] L27-->L32: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[82] L32-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[84] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[109] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 16:59:03,419 INFO L754 eck$LassoCheckResult]: Loop: "[87] L38-->L40: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[89] L40-->L41: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[91] L41-->L38: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:03,419 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:03,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1217177571, now seen corresponding path program 1 times [2025-04-26 16:59:03,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:03,419 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942513819] [2025-04-26 16:59:03,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:03,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:03,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:59:03,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:59:03,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:03,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:03,424 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:03,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:59:03,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:59:03,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:03,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:03,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:03,427 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash 116248, now seen corresponding path program 1 times [2025-04-26 16:59:03,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:03,427 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907343365] [2025-04-26 16:59:03,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:03,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:03,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:03,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:03,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:03,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:03,430 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:03,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:03,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:03,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:03,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:03,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:03,436 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:03,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1471948924, now seen corresponding path program 1 times [2025-04-26 16:59:03,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:03,437 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045388018] [2025-04-26 16:59:03,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:03,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:03,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 16:59:03,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 16:59:03,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:03,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:03,455 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:03,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 16:59:03,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 16:59:03,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:03,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:03,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:03,483 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:03,483 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:03,483 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:03,483 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:03,483 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:03,483 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:03,483 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:03,483 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:03,483 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:59:03,483 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:03,483 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:03,484 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:03,488 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:03,513 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:03,513 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:03,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:03,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:03,516 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 16:59:03,517 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 16:59:03,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:03,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:03,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:03,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:03,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:03,539 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:03,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:59:03,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:03,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:03,577 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:59:03,577 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-04-26 16:59:03,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:03,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:03,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:03,586 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:03,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:59:03,589 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:03,589 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:03,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 16:59:03,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:03,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:03,608 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:03,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:59:03,610 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:03,610 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:03,674 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:03,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:59:03,679 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:03,679 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:03,679 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:03,679 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:03,679 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:03,679 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:03,679 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:03,679 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:03,679 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:59:03,679 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:03,679 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:03,680 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:03,683 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:03,706 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:03,706 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:03,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:03,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:03,708 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:03,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:59:03,711 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 16:59:03,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:03,721 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:03,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:03,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:03,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:03,722 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:03,722 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:03,724 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:59:03,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:03,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:03,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:03,732 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:03,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 16:59:03,735 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 16:59:03,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:03,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:03,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:03,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:03,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:03,747 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:03,747 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:03,749 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:03,752 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:59:03,752 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:59:03,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:03,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:03,754 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:03,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 16:59:03,757 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:03,759 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:59:03,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-04-26 16:59:03,760 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:03,760 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:03,760 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-04-26 16:59:03,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-04-26 16:59:03,767 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:03,778 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:03,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:59:03,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:59:03,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:03,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:03,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:03,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:03,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:03,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:03,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:03,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:03,796 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:03,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:03,827 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 16:59:03,828 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:03,828 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2000 states and 3943 transitions. cyclomatic complexity: 2106 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 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 16:59:03,910 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2000 states and 3943 transitions. cyclomatic complexity: 2106. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 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 4461 states and 8726 transitions. Complement of second has 6 states. [2025-04-26 16:59:03,911 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 16:59:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 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 16:59:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-04-26 16:59:03,911 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 16:59:03,912 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:03,912 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 9 letters. Loop has 3 letters. [2025-04-26 16:59:03,912 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:03,912 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 6 letters. Loop has 6 letters. [2025-04-26 16:59:03,912 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:03,912 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4461 states and 8726 transitions. [2025-04-26 16:59:03,941 INFO L131 ngComponentsAnalysis]: Automaton has 47 accepting balls. 183 [2025-04-26 16:59:03,959 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4461 states to 2660 states and 5174 transitions. [2025-04-26 16:59:03,959 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1020 [2025-04-26 16:59:03,961 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1183 [2025-04-26 16:59:03,961 INFO L74 IsDeterministic]: Start isDeterministic. Operand 2660 states and 5174 transitions. [2025-04-26 16:59:03,961 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:59:03,961 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2660 states and 5174 transitions. [2025-04-26 16:59:03,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states and 5174 transitions. [2025-04-26 16:59:04,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2506. [2025-04-26 16:59:04,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2506 states have (on average 1.9648842777334397) internal successors, (in total 4924), 2505 states have internal predecessors, (4924), 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 16:59:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 4924 transitions. [2025-04-26 16:59:04,014 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2506 states and 4924 transitions. [2025-04-26 16:59:04,014 INFO L438 stractBuchiCegarLoop]: Abstraction has 2506 states and 4924 transitions. [2025-04-26 16:59:04,014 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:59:04,014 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2506 states and 4924 transitions. [2025-04-26 16:59:04,044 INFO L131 ngComponentsAnalysis]: Automaton has 47 accepting balls. 183 [2025-04-26 16:59:04,045 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:04,045 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:04,045 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:59:04,045 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:04,045 INFO L752 eck$LassoCheckResult]: Stem: "[73] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[106] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[80] L27-->L32: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[82] L32-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[84] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[109] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[86] L38-->L43: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[88] L43-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[90] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[112] L15-->L49: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-04-26 16:59:04,046 INFO L754 eck$LassoCheckResult]: Loop: "[93] L49-->L51: Formula: (< v_y1_1 v_z1_3) InVars {y1=v_y1_1, z1=v_z1_3} OutVars{y1=v_y1_1, z1=v_z1_3} AuxVars[] AssignedVars[]" "[95] L51-->L52: Formula: (= v_y1_2 (+ v_y1_3 1)) InVars {y1=v_y1_3} OutVars{y1=v_y1_2} AuxVars[] AssignedVars[y1]" "[97] L52-->L49: Formula: (= v_c_5 (+ v_c_6 1)) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:04,046 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:04,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1614254283, now seen corresponding path program 1 times [2025-04-26 16:59:04,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:04,046 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493074135] [2025-04-26 16:59:04,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:04,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:04,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:59:04,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:59:04,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,051 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:04,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:59:04,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:59:04,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,055 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:04,055 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:04,055 INFO L85 PathProgramCache]: Analyzing trace with hash 122206, now seen corresponding path program 1 times [2025-04-26 16:59:04,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:04,056 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28055739] [2025-04-26 16:59:04,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:04,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:04,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:04,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:04,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,058 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:04,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:04,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:04,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,060 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:04,061 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:04,061 INFO L85 PathProgramCache]: Analyzing trace with hash 499560874, now seen corresponding path program 1 times [2025-04-26 16:59:04,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:04,061 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240704719] [2025-04-26 16:59:04,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:04,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:04,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-26 16:59:04,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-26 16:59:04,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,066 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:04,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-26 16:59:04,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-26 16:59:04,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,075 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:04,100 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:04,100 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:04,100 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:04,100 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:04,100 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:04,100 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,100 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:04,100 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:04,100 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:59:04,100 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:04,100 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:04,101 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:04,105 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:04,137 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:04,137 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:04,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,140 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 16:59:04,141 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:04,141 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:04,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-04-26 16:59:04,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,159 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 16:59:04,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:04,160 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:04,193 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:59:04,194 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-04-26 16:59:04,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:04,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,203 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-04-26 16:59:04,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:04,207 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:04,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-04-26 16:59:04,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,227 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 16:59:04,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:04,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:04,295 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:04,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-04-26 16:59:04,300 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:04,300 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:04,300 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:04,300 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:04,300 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:04,300 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,300 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:04,300 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:04,300 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:59:04,301 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:04,301 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:04,301 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:04,305 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:04,328 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:04,328 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:04,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,331 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 16:59:04,334 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 16:59:04,344 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:04,344 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:04,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:04,344 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:04,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:04,344 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:04,344 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:04,347 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:59:04,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:04,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,354 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 16:59:04,356 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 16:59:04,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:04,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:04,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:04,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:04,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:04,367 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:04,367 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:04,369 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:04,372 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:59:04,372 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:59:04,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,375 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-04-26 16:59:04,377 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:04,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:04,381 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:04,381 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:04,381 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y1, z1) = -1*y1 + 1*z1 Supporting invariants [] [2025-04-26 16:59:04,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:04,389 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:04,400 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:04,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:59:04,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:59:04,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:04,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:04,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:04,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:04,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:04,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:04,432 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:04,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:04,455 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 16:59:04,456 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:04,456 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2506 states and 4924 transitions. cyclomatic complexity: 2569 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (in total 13), 4 states have internal predecessors, (13), 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 16:59:04,546 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2506 states and 4924 transitions. cyclomatic complexity: 2569. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (in total 13), 4 states have internal predecessors, (13), 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 5851 states and 11376 transitions. Complement of second has 6 states. [2025-04-26 16:59:04,546 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 16:59:04,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (in total 13), 4 states have internal predecessors, (13), 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 16:59:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-04-26 16:59:04,549 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 87 transitions. Stem has 10 letters. Loop has 3 letters. [2025-04-26 16:59:04,549 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:04,549 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 87 transitions. Stem has 13 letters. Loop has 3 letters. [2025-04-26 16:59:04,549 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:04,549 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 87 transitions. Stem has 10 letters. Loop has 6 letters. [2025-04-26 16:59:04,549 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:04,549 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5851 states and 11376 transitions. [2025-04-26 16:59:04,584 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 45 [2025-04-26 16:59:04,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5851 states to 2827 states and 5453 transitions. [2025-04-26 16:59:04,600 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 830 [2025-04-26 16:59:04,602 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 897 [2025-04-26 16:59:04,602 INFO L74 IsDeterministic]: Start isDeterministic. Operand 2827 states and 5453 transitions. [2025-04-26 16:59:04,602 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:59:04,602 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2827 states and 5453 transitions. [2025-04-26 16:59:04,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states and 5453 transitions. [2025-04-26 16:59:04,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2741. [2025-04-26 16:59:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 2741 states have (on average 1.948194089748267) internal successors, (in total 5340), 2740 states have internal predecessors, (5340), 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 16:59:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 5340 transitions. [2025-04-26 16:59:04,683 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2741 states and 5340 transitions. [2025-04-26 16:59:04,683 INFO L438 stractBuchiCegarLoop]: Abstraction has 2741 states and 5340 transitions. [2025-04-26 16:59:04,683 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:59:04,683 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2741 states and 5340 transitions. [2025-04-26 16:59:04,691 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 45 [2025-04-26 16:59:04,691 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:04,691 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:04,692 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:59:04,692 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:04,692 INFO L752 eck$LassoCheckResult]: Stem: "[73] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[106] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[80] L27-->L32: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[82] L32-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[84] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[109] L14-1-->L38: 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]" "[86] L38-->L43: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[88] L43-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[90] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[112] L15-->L49: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[92] L49-->L54: Formula: (<= v_z1_4 v_y1_4) InVars {y1=v_y1_4, z1=v_z1_4} OutVars{y1=v_y1_4, z1=v_z1_4} AuxVars[] AssignedVars[]" "[94] L54-->thread3FINAL: Formula: (= v_f_5 (+ v_f_6 1)) InVars {f=v_f_6} OutVars{f=v_f_5} AuxVars[] AssignedVars[f]" "[96] thread3FINAL-->thread3EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[115] L16-->L60: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" [2025-04-26 16:59:04,692 INFO L754 eck$LassoCheckResult]: Loop: "[99] L60-->L62: Formula: (< v_y2_1 v_z1_5) InVars {y2=v_y2_1, z1=v_z1_5} OutVars{y2=v_y2_1, z1=v_z1_5} AuxVars[] AssignedVars[]" "[101] L62-->L63: Formula: (= v_y2_2 (+ v_y2_3 1)) InVars {y2=v_y2_3} OutVars{y2=v_y2_2} AuxVars[] AssignedVars[y2]" "[103] L63-->L60: Formula: (= v_c_7 (+ v_c_8 1)) InVars {c=v_c_8} OutVars{c=v_c_7} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:04,693 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1693512758, now seen corresponding path program 1 times [2025-04-26 16:59:04,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:04,693 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304327694] [2025-04-26 16:59:04,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:04,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:04,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 16:59:04,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 16:59:04,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,699 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:04,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 16:59:04,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 16:59:04,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,706 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:04,708 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:04,709 INFO L85 PathProgramCache]: Analyzing trace with hash 128164, now seen corresponding path program 1 times [2025-04-26 16:59:04,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:04,709 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806093321] [2025-04-26 16:59:04,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:04,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:04,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:04,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:04,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,713 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:04,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:04,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:04,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:04,715 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1542350907, now seen corresponding path program 1 times [2025-04-26 16:59:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:04,715 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441351090] [2025-04-26 16:59:04,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:04,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:04,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-26 16:59:04,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-26 16:59:04,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,726 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:04,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-26 16:59:04,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-26 16:59:04,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,733 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:04,754 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:04,754 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:04,754 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:04,754 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:04,754 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:04,754 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,754 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:04,754 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:04,754 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:59:04,754 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:04,754 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:04,755 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:04,760 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:04,781 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:04,782 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:04,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,784 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-04-26 16:59:04,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:04,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:04,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:04,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,806 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-04-26 16:59:04,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:04,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:04,878 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:04,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-04-26 16:59:04,883 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:04,883 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:04,883 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:04,883 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:04,883 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:04,883 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,883 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:04,883 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:04,883 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:59:04,883 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:04,883 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:04,884 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:04,889 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:04,908 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:04,908 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:04,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,911 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-04-26 16:59:04,914 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 16:59:04,925 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:04,925 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:04,925 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:04,925 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:04,925 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:04,926 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:04,926 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:04,928 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:04,934 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:59:04,934 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:59:04,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,937 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-04-26 16:59:04,939 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:04,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2025-04-26 16:59:04,943 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:04,943 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:04,943 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y2, z1) = -1*y2 + 1*z1 Supporting invariants [] [2025-04-26 16:59:04,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:04,950 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:04,961 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:04,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 16:59:04,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 16:59:04,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:04,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:04,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:04,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:04,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:04,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:04,996 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:04,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:05,024 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 16:59:05,024 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:05,025 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2741 states and 5340 transitions. cyclomatic complexity: 2741 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (in total 17), 4 states have internal predecessors, (17), 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 16:59:05,103 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2741 states and 5340 transitions. cyclomatic complexity: 2741. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (in total 17), 4 states have internal predecessors, (17), 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 5896 states and 11229 transitions. Complement of second has 6 states. [2025-04-26 16:59:05,104 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 16:59:05,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (in total 17), 4 states have internal predecessors, (17), 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 16:59:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-04-26 16:59:05,105 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 14 letters. Loop has 3 letters. [2025-04-26 16:59:05,105 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:05,105 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 17 letters. Loop has 3 letters. [2025-04-26 16:59:05,106 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:05,106 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 14 letters. Loop has 6 letters. [2025-04-26 16:59:05,106 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:05,106 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5896 states and 11229 transitions. [2025-04-26 16:59:05,164 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:59:05,164 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5896 states to 0 states and 0 transitions. [2025-04-26 16:59:05,164 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:59:05,164 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:59:05,164 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:59:05,164 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:59:05,164 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:59:05,164 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:59:05,164 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:59:05,164 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:59:05,164 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:59:05,164 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:59:05,164 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:59:05,175 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 16:59:05,177 INFO L201 PluginConnector]: Adding new model pp4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:59:05 BoogieIcfgContainer [2025-04-26 16:59:05,177 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:59:05,178 INFO L158 Benchmark]: Toolchain (without parser) took 3890.83ms. Allocated memory was 155.2MB in the beginning and 218.1MB in the end (delta: 62.9MB). Free memory was 82.4MB in the beginning and 134.9MB in the end (delta: -52.5MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. [2025-04-26 16:59:05,178 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.77ms. Allocated memory is still 155.2MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:59:05,179 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.59ms. Allocated memory is still 155.2MB. Free memory was 82.4MB in the beginning and 80.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:59:05,179 INFO L158 Benchmark]: Boogie Preprocessor took 25.22ms. Allocated memory is still 155.2MB. Free memory was 80.4MB in the beginning and 79.3MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:59:05,179 INFO L158 Benchmark]: RCFGBuilder took 195.83ms. Allocated memory is still 155.2MB. Free memory was 79.3MB in the beginning and 69.2MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:59:05,180 INFO L158 Benchmark]: BuchiAutomizer took 3629.90ms. Allocated memory was 155.2MB in the beginning and 218.1MB in the end (delta: 62.9MB). Free memory was 69.2MB in the beginning and 134.9MB in the end (delta: -65.6MB). Peak memory consumption was 1.4MB. Max. memory is 8.0GB. [2025-04-26 16:59:05,181 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 0.77ms. Allocated memory is still 155.2MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.59ms. Allocated memory is still 155.2MB. Free memory was 82.4MB in the beginning and 80.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 25.22ms. Allocated memory is still 155.2MB. Free memory was 80.4MB in the beginning and 79.3MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 195.83ms. Allocated memory is still 155.2MB. Free memory was 79.3MB in the beginning and 69.2MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 3629.90ms. Allocated memory was 155.2MB in the beginning and 218.1MB in the end (delta: 62.9MB). Free memory was 69.2MB in the beginning and 134.9MB in the end (delta: -65.6MB). Peak memory consumption was 1.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 395 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 240 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 236 mSDsluCounter, 371 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 201 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 170 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.6s InitialAbstraction: Time to compute Ample Reduction [ms]: 613, Number of transitions in reduction automaton: 3469, Number of states in reduction automaton: 1816, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z1 and consists of 4 locations. One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + z1 and consists of 4 locations. One deterministic module has affine ranking function -1 * y2 + z1 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 16:59:05,194 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...