/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/interleaved4-buggy.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:58:27,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:58:27,153 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:58:27,156 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:58:27,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:58:27,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:58:27,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:58:27,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:58:27,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:58:27,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:58:27,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:58:27,179 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:58:27,179 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:58:27,179 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:58:27,179 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:58:27,179 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:58:27,179 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:58:27,179 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:58:27,179 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:58:27,179 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:58:27,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:58:27,180 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:58:27,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:58:27,180 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:58:27,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:58:27,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:58:27,181 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:58:27,181 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:58:27,181 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:58:27,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:58:27,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:58:27,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:58:27,393 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:58:27,393 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:58:27,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/interleaved4-buggy.c.bpl [2025-04-26 16:58:27,395 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/interleaved4-buggy.c.bpl' [2025-04-26 16:58:27,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:58:27,412 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:58:27,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:58:27,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:58:27,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:58:27,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:27" (1/1) ... [2025-04-26 16:58:27,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:27" (1/1) ... [2025-04-26 16:58:27,444 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:58:27,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:58:27,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:58:27,447 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:58:27,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:58:27,451 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:27" (1/1) ... [2025-04-26 16:58:27,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:27" (1/1) ... [2025-04-26 16:58:27,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:27" (1/1) ... [2025-04-26 16:58:27,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:27" (1/1) ... [2025-04-26 16:58:27,455 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:27" (1/1) ... [2025-04-26 16:58:27,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:27" (1/1) ... [2025-04-26 16:58:27,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:27" (1/1) ... [2025-04-26 16:58:27,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:27" (1/1) ... [2025-04-26 16:58:27,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:27" (1/1) ... [2025-04-26 16:58:27,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:58:27,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:58:27,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:58:27,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:58:27,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:27" (1/1) ... [2025-04-26 16:58:27,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:58:27,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:27,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:27,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 16:58:27,511 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:58:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:58:27,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:58:27,511 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:58:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:58:27,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:58:27,511 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:58:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:58:27,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:58:27,512 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:58:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:58:27,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:58:27,512 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:58:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:58:27,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:58:27,512 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:58:27,548 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:58:27,549 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:58:27,638 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:58:27,638 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:58:27,657 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:58:27,657 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:58:27,659 INFO L201 PluginConnector]: Adding new model interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:58:27 BoogieIcfgContainer [2025-04-26 16:58:27,659 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:58:27,660 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:58:27,660 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:58:27,665 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:58:27,666 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:58:27,666 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:27" (1/2) ... [2025-04-26 16:58:27,668 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@610af9be and model type interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:58:27, skipping insertion in model container [2025-04-26 16:58:27,668 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:58:27,668 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:58:27" (2/2) ... [2025-04-26 16:58:27,669 INFO L376 chiAutomizerObserver]: Analyzing ICFG interleaved4-buggy.c.bpl [2025-04-26 16:58:27,724 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-26 16:58:27,754 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:58:27,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:58:27,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:27,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:27,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 16:58:27,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 41 transitions, 110 flow [2025-04-26 16:58:27,827 INFO L116 PetriNetUnfolderBase]: 4/33 cut-off events. [2025-04-26 16:58:27,828 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-26 16:58:27,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 33 events. 4/33 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 84 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2025-04-26 16:58:27,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 41 transitions, 110 flow [2025-04-26 16:58:27,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 33 transitions, 90 flow [2025-04-26 16:58:27,837 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 42 places, 33 transitions, 90 flow [2025-04-26 16:58:27,841 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:58:28,005 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 629#[L52, L76, L61-1, L20]true [2025-04-26 16:58:28,114 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 1605#[thread3EXIT, L32, L46, L18]true [2025-04-26 16:58:28,126 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 1977#[thread4EXIT, L61, L46-1, L32, L19]true [2025-04-26 16:58:28,142 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 2207#[L46-1, L32, L76, L19, L61]true [2025-04-26 16:58:28,143 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 2089#[L52, L76-1, L67, L32, L19]true [2025-04-26 16:58:28,144 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 1783#[L46-1, L32, L18, L61]true [2025-04-26 16:58:28,145 WARN L140 AmpleReduction]: Number of pruned transitions: 1518 [2025-04-26 16:58:28,145 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 6 [2025-04-26 16:58:28,145 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 156 [2025-04-26 16:58:28,145 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:36 [2025-04-26 16:58:28,145 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:661 [2025-04-26 16:58:28,145 WARN L145 AmpleReduction]: Times succ was already a loop node:52 [2025-04-26 16:58:28,146 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:295 [2025-04-26 16:58:28,146 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:58:28,152 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 848 states, 847 states have (on average 1.6824085005903189) internal successors, (in total 1425), 847 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:28,159 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:58:28,159 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:58:28,159 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:58:28,159 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:58:28,159 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:58:28,159 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:58:28,160 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:58:28,160 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:58:28,162 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 848 states, 847 states have (on average 1.6824085005903189) internal successors, (in total 1425), 847 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:28,190 INFO L131 ngComponentsAnalysis]: Automaton has 93 accepting balls. 712 [2025-04-26 16:58:28,190 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:58:28,190 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:58:28,196 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:58:28,196 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:58:28,196 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:58:28,198 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 848 states, 847 states have (on average 1.6824085005903189) internal successors, (in total 1425), 847 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:28,210 INFO L131 ngComponentsAnalysis]: Automaton has 93 accepting balls. 712 [2025-04-26 16:58:28,210 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:58:28,210 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:58:28,211 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:58:28,211 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:58:28,215 INFO L752 eck$LassoCheckResult]: Stem: "[81] $Ultimate##0-->L16: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_f1_3 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[120] L16-->L33-1: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0]" [2025-04-26 16:58:28,215 INFO L754 eck$LassoCheckResult]: Loop: "[87] L33-1-->L31: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[89] L31-->L32: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[90] L32-->L33: Formula: (= v_f2_1 1) InVars {} OutVars{f2=v_f2_1} AuxVars[] AssignedVars[f2]" "[91] L33-->L33-1: Formula: (and (= v_f1_4 0) (< 0 v_f1_5)) InVars {f1=v_f1_5} OutVars{f1=v_f1_4} AuxVars[] AssignedVars[f1]" [2025-04-26 16:58:28,219 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:28,219 INFO L85 PathProgramCache]: Analyzing trace with hash 3592, now seen corresponding path program 1 times [2025-04-26 16:58:28,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:28,223 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860547203] [2025-04-26 16:58:28,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:28,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:28,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:58:28,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:58:28,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:28,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:28,268 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:28,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:58:28,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:58:28,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:28,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:28,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:28,286 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:28,286 INFO L85 PathProgramCache]: Analyzing trace with hash 3603748, now seen corresponding path program 1 times [2025-04-26 16:58:28,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:28,286 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551655126] [2025-04-26 16:58:28,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:28,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:28,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:28,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:28,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:28,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:28,295 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:28,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:28,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:28,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:28,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:28,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:28,303 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:28,304 INFO L85 PathProgramCache]: Analyzing trace with hash -974999637, now seen corresponding path program 1 times [2025-04-26 16:58:28,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:28,304 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722785701] [2025-04-26 16:58:28,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:28,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:28,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:58:28,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:58:28,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:28,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:58:28,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:58:28,420 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722785701] [2025-04-26 16:58:28,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722785701] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:58:28,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:58:28,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-26 16:58:28,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534458400] [2025-04-26 16:58:28,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:58:28,482 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:28,482 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:28,483 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:28,483 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:28,483 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:58:28,483 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:28,483 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:28,483 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:28,483 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4-buggy.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:58:28,483 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:28,483 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:28,492 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:28,499 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:28,506 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:28,565 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:28,565 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:58:28,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:28,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:28,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:28,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:58:28,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:28,573 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:28,590 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:58:28,591 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f2=1} Honda state: {f2=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:58:28,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:28,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:28,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:28,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:28,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:58:28,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:28,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:28,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:28,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:28,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:28,626 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:28,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:58:28,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:28,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:28,697 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:58:28,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:28,701 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:28,701 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:28,701 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:28,701 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:28,701 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:58:28,701 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:28,701 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:28,701 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:28,701 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4-buggy.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:58:28,701 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:28,701 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:28,702 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:28,707 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:28,716 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:28,756 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:28,759 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:58:28,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:28,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:28,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:28,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:58:28,767 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:58:28,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:28,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:28,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:28,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:28,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:28,782 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:28,782 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:28,784 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:58:28,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 16:58:28,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:28,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:28,795 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:28,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:58:28,797 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:58:28,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:28,808 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:28,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:28,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:28,809 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:28,811 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:28,811 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:28,813 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:58:28,816 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:58:28,816 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:58:28,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:28,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:28,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:28,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:58:28,821 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:58:28,823 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:58:28,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:58:28,825 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:58:28,825 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:58:28,826 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-04-26 16:58:28,831 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 16:58:28,833 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:58:28,855 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:28,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:58:28,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:58:28,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:28,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:28,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:58:28,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:28,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:28,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:28,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:28,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:28,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:58:28,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:58:28,948 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:58:28,952 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 848 states, 847 states have (on average 1.6824085005903189) internal successors, (in total 1425), 847 states have internal predecessors, (1425), 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 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:29,079 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 848 states, 847 states have (on average 1.6824085005903189) internal successors, (in total 1425), 847 states have internal predecessors, (1425), 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 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 1805 states and 3060 transitions. Complement of second has 6 states. [2025-04-26 16:58:29,080 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:58:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-04-26 16:58:29,090 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 69 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:58:29,090 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:29,090 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 69 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 16:58:29,090 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:29,090 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 69 transitions. Stem has 2 letters. Loop has 8 letters. [2025-04-26 16:58:29,091 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:29,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1805 states and 3060 transitions. [2025-04-26 16:58:29,109 INFO L131 ngComponentsAnalysis]: Automaton has 66 accepting balls. 347 [2025-04-26 16:58:29,124 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1805 states to 1204 states and 1999 transitions. [2025-04-26 16:58:29,124 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 600 [2025-04-26 16:58:29,126 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 741 [2025-04-26 16:58:29,126 INFO L74 IsDeterministic]: Start isDeterministic. Operand 1204 states and 1999 transitions. [2025-04-26 16:58:29,127 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:58:29,127 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1204 states and 1999 transitions. [2025-04-26 16:58:29,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states and 1999 transitions. [2025-04-26 16:58:29,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1104. [2025-04-26 16:58:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 1104 states have (on average 1.6947463768115942) internal successors, (in total 1871), 1103 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:29,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1871 transitions. [2025-04-26 16:58:29,196 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1104 states and 1871 transitions. [2025-04-26 16:58:29,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:58:29,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:58:29,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:58:29,198 INFO L87 Difference]: Start difference. First operand 1104 states and 1871 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (in total 6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:29,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:58:29,224 INFO L93 Difference]: Finished difference Result 480 states and 655 transitions. [2025-04-26 16:58:29,224 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 480 states and 655 transitions. [2025-04-26 16:58:29,227 INFO L131 ngComponentsAnalysis]: Automaton has 47 accepting balls. 259 [2025-04-26 16:58:29,228 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 480 states to 308 states and 450 transitions. [2025-04-26 16:58:29,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 306 [2025-04-26 16:58:29,229 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 308 [2025-04-26 16:58:29,229 INFO L74 IsDeterministic]: Start isDeterministic. Operand 308 states and 450 transitions. [2025-04-26 16:58:29,230 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:58:29,230 INFO L218 hiAutomatonCegarLoop]: Abstraction has 308 states and 450 transitions. [2025-04-26 16:58:29,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states and 450 transitions. [2025-04-26 16:58:29,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2025-04-26 16:58:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 308 states have (on average 1.4610389610389611) internal successors, (in total 450), 307 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:29,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 450 transitions. [2025-04-26 16:58:29,238 INFO L240 hiAutomatonCegarLoop]: Abstraction has 308 states and 450 transitions. [2025-04-26 16:58:29,238 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:58:29,239 INFO L438 stractBuchiCegarLoop]: Abstraction has 308 states and 450 transitions. [2025-04-26 16:58:29,239 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:58:29,239 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 308 states and 450 transitions. [2025-04-26 16:58:29,240 INFO L131 ngComponentsAnalysis]: Automaton has 47 accepting balls. 259 [2025-04-26 16:58:29,240 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:58:29,240 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:58:29,241 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:58:29,241 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:58:29,241 INFO L752 eck$LassoCheckResult]: Stem: "[81] $Ultimate##0-->L16: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_f1_3 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[120] L16-->L33-1: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0]" "[86] L33-1-->thread1FINAL: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[88] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[111] L16-1-->L44: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" [2025-04-26 16:58:29,241 INFO L754 eck$LassoCheckResult]: Loop: "[93] L44-->L46: Formula: (< v_x2_2 v_z_4) InVars {x2=v_x2_2, z=v_z_4} OutVars{x2=v_x2_2, z=v_z_4} AuxVars[] AssignedVars[]" "[95] L46-->L46-1: Formula: (and (< 0 v_f2_6) (= v_f2_5 0)) InVars {f2=v_f2_6} OutVars{f2=v_f2_5} AuxVars[] AssignedVars[f2]" "[96] L46-1-->L52: Formula: (= v_x2_3 (+ v_x2_4 1)) InVars {x2=v_x2_4} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[x2]" "[97] L52-->L44: Formula: (= v_f3_1 1) InVars {} OutVars{f3=v_f3_1} AuxVars[] AssignedVars[f3]" [2025-04-26 16:58:29,242 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:29,242 INFO L85 PathProgramCache]: Analyzing trace with hash 107094757, now seen corresponding path program 1 times [2025-04-26 16:58:29,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:29,244 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858216463] [2025-04-26 16:58:29,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:29,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:29,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:58:29,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:58:29,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:29,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:29,253 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:29,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:58:29,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:58:29,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:29,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:29,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:29,260 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:29,260 INFO L85 PathProgramCache]: Analyzing trace with hash 3788452, now seen corresponding path program 1 times [2025-04-26 16:58:29,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:29,261 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223691879] [2025-04-26 16:58:29,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:29,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:29,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:29,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:29,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:29,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:29,264 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:29,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:29,266 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:29,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:29,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:29,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:29,267 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:29,267 INFO L85 PathProgramCache]: Analyzing trace with hash -246947960, now seen corresponding path program 1 times [2025-04-26 16:58:29,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:29,267 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540116652] [2025-04-26 16:58:29,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:29,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:29,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 16:58:29,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 16:58:29,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:29,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:29,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:58:29,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:58:29,302 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540116652] [2025-04-26 16:58:29,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540116652] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:58:29,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:58:29,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:58:29,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757011300] [2025-04-26 16:58:29,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:58:29,328 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:29,329 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:29,329 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:29,329 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:29,329 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:58:29,329 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:29,329 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:29,329 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:29,329 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4-buggy.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:58:29,329 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:29,329 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:29,330 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:29,334 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:29,337 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:29,367 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:29,367 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:58:29,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:29,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:29,369 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:29,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:58:29,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:29,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:29,391 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 16:58:29,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:29,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:29,393 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:29,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:58:29,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:29,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:29,461 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:58:29,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:29,465 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:29,465 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:29,465 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:29,465 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:29,465 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:58:29,466 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:29,466 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:29,466 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:29,466 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4-buggy.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:58:29,466 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:29,466 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:29,467 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:29,473 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:29,480 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:29,510 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:29,510 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:58:29,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:29,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:29,512 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:29,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:58:29,516 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:58:29,526 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:29,526 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:29,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:29,526 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:29,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:29,528 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:29,528 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:29,530 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:58:29,533 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:58:29,533 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:58:29,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:29,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:29,535 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:29,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:58:29,538 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:58:29,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:29,541 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:58:29,541 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:58:29,541 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-04-26 16:58:29,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 16:58:29,548 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:58:29,559 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:29,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:58:29,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:58:29,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:29,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:29,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:58:29,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:29,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:29,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:29,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:29,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:29,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:58:29,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:58:29,604 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:58:29,605 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 308 states and 450 transitions. cyclomatic complexity: 189 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 16:58:29,679 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 308 states and 450 transitions. cyclomatic complexity: 189. 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 670 states and 1026 transitions. Complement of second has 6 states. [2025-04-26 16:58:29,680 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:58:29,681 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 16:58:29,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2025-04-26 16:58:29,681 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 5 letters. Loop has 4 letters. [2025-04-26 16:58:29,681 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:29,681 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 9 letters. Loop has 4 letters. [2025-04-26 16:58:29,681 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:29,681 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 5 letters. Loop has 8 letters. [2025-04-26 16:58:29,681 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:29,681 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 670 states and 1026 transitions. [2025-04-26 16:58:29,686 INFO L131 ngComponentsAnalysis]: Automaton has 29 accepting balls. 112 [2025-04-26 16:58:29,688 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 670 states to 409 states and 618 transitions. [2025-04-26 16:58:29,689 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 174 [2025-04-26 16:58:29,689 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 222 [2025-04-26 16:58:29,689 INFO L74 IsDeterministic]: Start isDeterministic. Operand 409 states and 618 transitions. [2025-04-26 16:58:29,689 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:58:29,689 INFO L218 hiAutomatonCegarLoop]: Abstraction has 409 states and 618 transitions. [2025-04-26 16:58:29,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states and 618 transitions. [2025-04-26 16:58:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 373. [2025-04-26 16:58:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 373 states have (on average 1.522788203753351) internal successors, (in total 568), 372 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 568 transitions. [2025-04-26 16:58:29,699 INFO L240 hiAutomatonCegarLoop]: Abstraction has 373 states and 568 transitions. [2025-04-26 16:58:29,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:58:29,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:58:29,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:58:29,699 INFO L87 Difference]: Start difference. First operand 373 states and 568 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (in total 9), 2 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 16:58:29,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:58:29,713 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2025-04-26 16:58:29,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 67 states and 84 transitions. [2025-04-26 16:58:29,714 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 49 [2025-04-26 16:58:29,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 67 states to 62 states and 79 transitions. [2025-04-26 16:58:29,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2025-04-26 16:58:29,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 62 [2025-04-26 16:58:29,714 INFO L74 IsDeterministic]: Start isDeterministic. Operand 62 states and 79 transitions. [2025-04-26 16:58:29,715 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:58:29,715 INFO L218 hiAutomatonCegarLoop]: Abstraction has 62 states and 79 transitions. [2025-04-26 16:58:29,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 79 transitions. [2025-04-26 16:58:29,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2025-04-26 16:58:29,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 62 states have (on average 1.2741935483870968) internal successors, (in total 79), 61 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2025-04-26 16:58:29,716 INFO L240 hiAutomatonCegarLoop]: Abstraction has 62 states and 79 transitions. [2025-04-26 16:58:29,716 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:58:29,717 INFO L438 stractBuchiCegarLoop]: Abstraction has 62 states and 79 transitions. [2025-04-26 16:58:29,717 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:58:29,717 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 79 transitions. [2025-04-26 16:58:29,717 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 49 [2025-04-26 16:58:29,717 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:58:29,717 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:58:29,718 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:58:29,718 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:58:29,718 INFO L752 eck$LassoCheckResult]: Stem: "[81] $Ultimate##0-->L16: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_f1_3 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[120] L16-->L33-1: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0]" "[86] L33-1-->thread1FINAL: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[88] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[111] L16-1-->L44: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[92] L44-->thread2FINAL: Formula: (<= v_z_3 v_x2_1) InVars {x2=v_x2_1, z=v_z_3} OutVars{x2=v_x2_1, z=v_z_3} AuxVars[] AssignedVars[]" "[94] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[114] L17-->L59: Formula: (and (= 3 v_thread3Thread1of1ForFork1_thidvar2_2) (= 3 v_thread3Thread1of1ForFork1_thidvar0_2) (= 3 v_thread3Thread1of1ForFork1_thidvar1_2)) InVars {} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_2, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_2, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_thidvar0, thread3Thread1of1ForFork1_thidvar1, thread3Thread1of1ForFork1_thidvar2]" [2025-04-26 16:58:29,718 INFO L754 eck$LassoCheckResult]: Loop: "[99] L59-->L61: Formula: (< v_x3_1 v_z_5) InVars {x3=v_x3_1, z=v_z_5} OutVars{x3=v_x3_1, z=v_z_5} AuxVars[] AssignedVars[]" "[101] L61-->L61-1: Formula: (and (< 0 v_f3_6) (= v_f3_5 0)) InVars {f3=v_f3_6} OutVars{f3=v_f3_5} AuxVars[] AssignedVars[f3]" "[102] L61-1-->L67: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" "[103] L67-->L59: Formula: (= v_f4_1 1) InVars {} OutVars{f4=v_f4_1} AuxVars[] AssignedVars[f4]" [2025-04-26 16:58:29,718 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:29,718 INFO L85 PathProgramCache]: Analyzing trace with hash -700703701, now seen corresponding path program 1 times [2025-04-26 16:58:29,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:29,718 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508853844] [2025-04-26 16:58:29,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:29,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:29,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:58:29,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:58:29,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:29,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:29,729 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:29,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:58:29,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:58:29,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:29,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:29,735 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:29,735 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:29,735 INFO L85 PathProgramCache]: Analyzing trace with hash 3973156, now seen corresponding path program 1 times [2025-04-26 16:58:29,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:29,738 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449677405] [2025-04-26 16:58:29,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:29,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:29,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:29,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:29,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:29,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:29,743 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:29,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:29,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:29,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:29,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:29,749 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:29,749 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:29,749 INFO L85 PathProgramCache]: Analyzing trace with hash -447047858, now seen corresponding path program 1 times [2025-04-26 16:58:29,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:29,749 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218615540] [2025-04-26 16:58:29,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:29,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:29,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-26 16:58:29,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-26 16:58:29,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:29,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:58:29,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:58:29,782 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218615540] [2025-04-26 16:58:29,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218615540] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:58:29,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:58:29,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:58:29,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71718933] [2025-04-26 16:58:29,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:58:29,806 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:29,806 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:29,806 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:29,806 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:29,806 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:58:29,806 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:29,806 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:29,806 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:29,806 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4-buggy.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:58:29,806 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:29,806 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:29,807 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:29,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:29,813 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:29,846 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:29,846 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:58:29,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:29,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:29,849 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:29,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:58:29,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:29,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:29,863 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:58:29,863 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f4=1} Honda state: {f4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:58:29,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:58:29,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:29,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:29,871 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:29,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:58:29,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:29,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:29,891 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 16:58:29,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:29,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:29,893 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:29,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:29,894 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:29,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 16:58:29,917 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:58:29,921 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 16:58:29,921 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:29,921 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:29,921 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:29,921 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:29,921 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:58:29,921 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:29,921 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:29,921 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:29,921 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4-buggy.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:58:29,921 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:29,921 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:29,922 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:29,924 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:29,931 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:29,962 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:29,962 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:58:29,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:29,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:29,964 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:29,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 16:58:29,967 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:58:29,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:29,977 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:29,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:29,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:29,977 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:29,978 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:29,978 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:29,979 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:58:29,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:29,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:29,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:29,987 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:29,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 16:58:29,989 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:58:29,998 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:29,998 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:29,998 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:29,998 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:29,998 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:29,999 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:29,999 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:30,001 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:58:30,003 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:58:30,003 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:58:30,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:30,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:30,005 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:30,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 16:58:30,007 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:58:30,010 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 16:58:30,011 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:58:30,011 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:58:30,011 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(f3) = 1*f3 Supporting invariants [] [2025-04-26 16:58:30,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:30,017 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:58:30,024 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:30,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:58:30,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:58:30,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:30,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:30,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:58:30,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:30,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:58:30,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:58:30,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:30,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:30,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:58:30,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:58:30,070 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:58:30,070 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 62 states and 79 transitions. cyclomatic complexity: 30 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (in total 12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:30,084 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 62 states and 79 transitions. cyclomatic complexity: 30. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (in total 12), 4 states have internal predecessors, (12), 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 120 states and 157 transitions. Complement of second has 4 states. [2025-04-26 16:58:30,085 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-04-26 16:58:30,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (in total 12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:30,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2025-04-26 16:58:30,085 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 8 letters. Loop has 4 letters. [2025-04-26 16:58:30,085 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:30,085 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 12 letters. Loop has 4 letters. [2025-04-26 16:58:30,086 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:30,086 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 8 letters. Loop has 8 letters. [2025-04-26 16:58:30,086 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:30,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 120 states and 157 transitions. [2025-04-26 16:58:30,086 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2025-04-26 16:58:30,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 120 states to 50 states and 62 transitions. [2025-04-26 16:58:30,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2025-04-26 16:58:30,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2025-04-26 16:58:30,087 INFO L74 IsDeterministic]: Start isDeterministic. Operand 50 states and 62 transitions. [2025-04-26 16:58:30,087 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:58:30,087 INFO L218 hiAutomatonCegarLoop]: Abstraction has 50 states and 62 transitions. [2025-04-26 16:58:30,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 62 transitions. [2025-04-26 16:58:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2025-04-26 16:58:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.2291666666666667) internal successors, (in total 59), 47 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:30,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2025-04-26 16:58:30,088 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48 states and 59 transitions. [2025-04-26 16:58:30,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:58:30,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:58:30,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:58:30,088 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (in total 12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:30,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:58:30,097 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2025-04-26 16:58:30,097 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 27 transitions. [2025-04-26 16:58:30,097 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2025-04-26 16:58:30,097 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 23 states and 26 transitions. [2025-04-26 16:58:30,097 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2025-04-26 16:58:30,097 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2025-04-26 16:58:30,097 INFO L74 IsDeterministic]: Start isDeterministic. Operand 23 states and 26 transitions. [2025-04-26 16:58:30,097 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:58:30,097 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 26 transitions. [2025-04-26 16:58:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 26 transitions. [2025-04-26 16:58:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-04-26 16:58:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (in total 26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2025-04-26 16:58:30,098 INFO L240 hiAutomatonCegarLoop]: Abstraction has 23 states and 26 transitions. [2025-04-26 16:58:30,098 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:58:30,099 INFO L438 stractBuchiCegarLoop]: Abstraction has 23 states and 26 transitions. [2025-04-26 16:58:30,099 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:58:30,099 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 26 transitions. [2025-04-26 16:58:30,099 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2025-04-26 16:58:30,099 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:58:30,099 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:58:30,100 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:58:30,100 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:58:30,101 INFO L752 eck$LassoCheckResult]: Stem: "[81] $Ultimate##0-->L16: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_f1_3 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[120] L16-->L33-1: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0]" "[86] L33-1-->thread1FINAL: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[88] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[111] L16-1-->L44: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[92] L44-->thread2FINAL: Formula: (<= v_z_3 v_x2_1) InVars {x2=v_x2_1, z=v_z_3} OutVars{x2=v_x2_1, z=v_z_3} AuxVars[] AssignedVars[]" "[94] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[114] L17-->L59: Formula: (and (= 3 v_thread3Thread1of1ForFork1_thidvar2_2) (= 3 v_thread3Thread1of1ForFork1_thidvar0_2) (= 3 v_thread3Thread1of1ForFork1_thidvar1_2)) InVars {} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_2, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_2, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_thidvar0, thread3Thread1of1ForFork1_thidvar1, thread3Thread1of1ForFork1_thidvar2]" "[98] L59-->thread3FINAL: Formula: (<= v_z_6 v_x3_4) InVars {x3=v_x3_4, z=v_z_6} OutVars{x3=v_x3_4, z=v_z_6} AuxVars[] AssignedVars[]" "[100] thread3FINAL-->thread3EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[117] L18-->L74: Formula: (and (= 4 v_thread4Thread1of1ForFork2_thidvar2_2) (= 4 v_thread4Thread1of1ForFork2_thidvar3_2) (= 4 v_thread4Thread1of1ForFork2_thidvar1_2) (= 4 v_thread4Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread4Thread1of1ForFork2_thidvar3=v_thread4Thread1of1ForFork2_thidvar3_2, thread4Thread1of1ForFork2_thidvar0=v_thread4Thread1of1ForFork2_thidvar0_2, thread4Thread1of1ForFork2_thidvar2=v_thread4Thread1of1ForFork2_thidvar2_2, thread4Thread1of1ForFork2_thidvar1=v_thread4Thread1of1ForFork2_thidvar1_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork2_thidvar3, thread4Thread1of1ForFork2_thidvar0, thread4Thread1of1ForFork2_thidvar2, thread4Thread1of1ForFork2_thidvar1]" [2025-04-26 16:58:30,101 INFO L754 eck$LassoCheckResult]: Loop: "[105] L74-->L76: Formula: (< v_x4_2 v_z_7) InVars {x4=v_x4_2, z=v_z_7} OutVars{x4=v_x4_2, z=v_z_7} AuxVars[] AssignedVars[]" "[107] L76-->L76-1: Formula: (and (< 0 v_f4_6) (= v_f4_5 0)) InVars {f4=v_f4_6} OutVars{f4=v_f4_5} AuxVars[] AssignedVars[f4]" "[108] L76-1-->L74: Formula: (= v_x4_3 (+ v_x4_4 1)) InVars {x4=v_x4_4} OutVars{x4=v_x4_3} AuxVars[] AssignedVars[x4]" [2025-04-26 16:58:30,101 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:30,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1122800536, now seen corresponding path program 1 times [2025-04-26 16:58:30,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:30,101 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538008909] [2025-04-26 16:58:30,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:30,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:30,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-26 16:58:30,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-26 16:58:30,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:30,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:30,106 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:30,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-26 16:58:30,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-26 16:58:30,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:30,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:30,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:30,114 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:30,114 INFO L85 PathProgramCache]: Analyzing trace with hash 134121, now seen corresponding path program 1 times [2025-04-26 16:58:30,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:30,114 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274956086] [2025-04-26 16:58:30,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:30,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:30,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:30,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:30,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:30,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:30,116 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:58:30,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:30,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:30,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:30,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:58:30,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:58:30,123 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:30,123 INFO L85 PathProgramCache]: Analyzing trace with hash -145362398, now seen corresponding path program 1 times [2025-04-26 16:58:30,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:58:30,123 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488046922] [2025-04-26 16:58:30,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:58:30,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:58:30,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 16:58:30,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 16:58:30,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:30,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:58:30,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:58:30,158 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488046922] [2025-04-26 16:58:30,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488046922] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:58:30,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:58:30,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:58:30,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812422247] [2025-04-26 16:58:30,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:58:30,175 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:30,176 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:30,176 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:30,176 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:30,176 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:58:30,176 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:30,176 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:30,176 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:30,176 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4-buggy.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:58:30,176 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:30,176 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:30,176 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:30,180 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:30,212 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:30,212 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:58:30,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:30,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:30,215 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:30,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-04-26 16:58:30,218 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:58:30,218 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:30,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:30,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:30,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:30,235 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:30,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 16:58:30,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:58:30,237 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:58:30,299 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:58:30,304 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 16:58:30,304 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:58:30,304 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:58:30,304 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:58:30,304 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:58:30,304 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:58:30,304 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:30,304 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:58:30,304 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:58:30,304 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4-buggy.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:58:30,304 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:58:30,304 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:58:30,305 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:30,309 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:58:30,332 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:58:30,332 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:58:30,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:30,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:30,335 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:58:30,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 16:58:30,337 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:58:30,347 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:58:30,347 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:58:30,347 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:58:30,347 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:58:30,347 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:58:30,347 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:58:30,348 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:58:30,349 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:58:30,352 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:58:30,352 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:58:30,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:58:30,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:30,354 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 16:58:30,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 16:58:30,356 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:58:30,358 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:58:30,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:30,359 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:58:30,359 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:58:30,359 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-04-26 16:58:30,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-04-26 16:58:30,365 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:58:30,375 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:58:30,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-26 16:58:30,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-26 16:58:30,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:30,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:30,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:58:30,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:30,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:58:30,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:58:30,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:58:30,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:58:30,403 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:58:30,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:58:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:58:30,420 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:58:30,420 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 26 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (in total 14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:30,441 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 26 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (in total 14), 3 states have internal predecessors, (14), 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 36 states and 43 transitions. Complement of second has 6 states. [2025-04-26 16:58:30,441 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:58:30,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (in total 14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:30,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2025-04-26 16:58:30,442 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 11 letters. Loop has 3 letters. [2025-04-26 16:58:30,442 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:30,442 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 3 letters. [2025-04-26 16:58:30,442 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:30,442 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 11 letters. Loop has 6 letters. [2025-04-26 16:58:30,442 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:58:30,442 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 43 transitions. [2025-04-26 16:58:30,442 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:58:30,442 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2025-04-26 16:58:30,442 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:58:30,442 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:58:30,442 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:58:30,442 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:58:30,442 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:58:30,443 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:58:30,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:58:30,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:58:30,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:58:30,443 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (in total 14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:58:30,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:58:30,443 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-04-26 16:58:30,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-04-26 16:58:30,443 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:58:30,443 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-04-26 16:58:30,443 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:58:30,443 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:58:30,443 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:58:30,443 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:58:30,443 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:58:30,443 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:58:30,443 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-26 16:58:30,444 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:58:30,444 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:58:30,444 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:58:30,444 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:58:30,444 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:58:30,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-26 16:58:30,456 INFO L201 PluginConnector]: Adding new model interleaved4-buggy.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:58:30 BoogieIcfgContainer [2025-04-26 16:58:30,456 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:58:30,457 INFO L158 Benchmark]: Toolchain (without parser) took 3044.52ms. Allocated memory was 167.8MB in the beginning and 155.2MB in the end (delta: -12.6MB). Free memory was 93.4MB in the beginning and 50.3MB in the end (delta: 43.1MB). Peak memory consumption was 34.1MB. Max. memory is 8.0GB. [2025-04-26 16:58:30,457 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.72ms. Allocated memory is still 167.8MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:58:30,457 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.20ms. Allocated memory is still 167.8MB. Free memory was 93.4MB in the beginning and 91.5MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:58:30,457 INFO L158 Benchmark]: Boogie Preprocessor took 18.34ms. Allocated memory is still 167.8MB. Free memory was 91.5MB in the beginning and 90.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:58:30,458 INFO L158 Benchmark]: RCFGBuilder took 193.55ms. Allocated memory is still 167.8MB. Free memory was 90.4MB in the beginning and 80.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:58:30,458 INFO L158 Benchmark]: BuchiAutomizer took 2796.39ms. Allocated memory was 167.8MB in the beginning and 155.2MB in the end (delta: -12.6MB). Free memory was 80.3MB in the beginning and 50.3MB in the end (delta: 30.0MB). Peak memory consumption was 21.5MB. Max. memory is 8.0GB. [2025-04-26 16:58:30,459 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 0.72ms. Allocated memory is still 167.8MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.20ms. Allocated memory is still 167.8MB. Free memory was 93.4MB in the beginning and 91.5MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.34ms. Allocated memory is still 167.8MB. Free memory was 91.5MB in the beginning and 90.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 193.55ms. Allocated memory is still 167.8MB. Free memory was 90.4MB in the beginning and 80.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2796.39ms. Allocated memory was 167.8MB in the beginning and 155.2MB in the end (delta: -12.6MB). Free memory was 80.3MB in the beginning and 50.3MB in the end (delta: 30.0MB). Peak memory consumption was 21.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 3. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 138 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176 mSDsluCounter, 155 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 192 IncrementalHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 101 mSDtfsCounter, 192 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf100 lsp59 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.4s InitialAbstraction: Time to compute Ample Reduction [ms]: 395, Number of transitions in reduction automaton: 1425, Number of states in reduction automaton: 848, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (4 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 4 locations. One deterministic module has affine ranking function z + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function f3 and consists of 3 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 4 locations. 4 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:58:30,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...