/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/barrier-5t.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:42:39,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:42:39,813 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:42:39,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:42:39,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:42:39,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:42:39,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:42:39,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:42:39,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:42:39,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:42:39,843 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:42:39,843 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:42:39,843 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:42:39,844 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:42:39,845 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:42:39,845 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:42:39,845 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:42:39,845 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:42:39,845 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:42:39,845 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:42:39,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:42:39,845 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:42:39,845 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:42:39,845 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:42:39,845 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:42:39,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:42:39,846 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:42:39,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:42:39,846 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:42:39,846 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:42:39,846 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:42:39,846 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:42:39,846 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:42:39,846 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:42:39,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:42:39,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:39,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:42:39,846 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:42:39,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:42:39,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:42:39,847 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:42:39,847 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:42:39,847 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:42:40,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:42:40,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:42:40,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:42:40,087 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:42:40,088 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:42:40,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/barrier-5t.c.bpl [2025-04-26 18:42:40,091 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/barrier-5t.c.bpl' [2025-04-26 18:42:40,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:42:40,109 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:42:40,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:40,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:42:40,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:42:40,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,144 INFO L138 Inliner]: procedures = 6, calls = 5, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:42:40,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:40,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:42:40,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:42:40,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:42:40,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,153 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,153 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,155 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:42:40,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:42:40,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:42:40,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:42:40,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:40,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:40,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:40,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 18:42:40,230 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:42:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:42:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:42:40,231 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:42:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:42:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:42:40,231 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 18:42:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 18:42:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 18:42:40,231 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:42:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:42:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:42:40,231 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 18:42:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 18:42:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 18:42:40,231 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 18:42:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 18:42:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 18:42:40,232 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 18:42:40,269 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:42:40,271 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:42:40,402 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:42:40,402 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:42:40,414 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:42:40,414 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:42:40,414 INFO L201 PluginConnector]: Adding new model barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:40 BoogieIcfgContainer [2025-04-26 18:42:40,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:42:40,415 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:42:40,415 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:42:40,421 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:42:40,421 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:40,422 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/2) ... [2025-04-26 18:42:40,423 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25f1f564 and model type barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:42:40, skipping insertion in model container [2025-04-26 18:42:40,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:40,423 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:40" (2/2) ... [2025-04-26 18:42:40,424 INFO L376 chiAutomizerObserver]: Analyzing ICFG barrier-5t.c.bpl [2025-04-26 18:42:40,489 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2025-04-26 18:42:40,517 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:42:40,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:42:40,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:40,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:40,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 18:42:40,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 169 flow [2025-04-26 18:42:40,582 INFO L116 PetriNetUnfolderBase]: 10/57 cut-off events. [2025-04-26 18:42:40,584 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-26 18:42:40,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 57 events. 10/57 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2025-04-26 18:42:40,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 169 flow [2025-04-26 18:42:40,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 57 transitions, 144 flow [2025-04-26 18:42:40,592 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 63 places, 57 transitions, 144 flow [2025-04-26 18:42:40,593 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 57 transitions, 144 flow [2025-04-26 18:42:42,094 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 42132 states, 42131 states have (on average 5.561463055707199) internal successors, (in total 234310), 42131 states have internal predecessors, (234310), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:42,194 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 42132 states, 42131 states have (on average 5.561463055707199) internal successors, (in total 234310), 42131 states have internal predecessors, (234310), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:42,199 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:42:44,564 WARN L140 AmpleReduction]: Number of pruned transitions: 100069 [2025-04-26 18:42:44,564 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:42:44,564 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 13257 [2025-04-26 18:42:44,564 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:669 [2025-04-26 18:42:44,565 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:24174 [2025-04-26 18:42:44,565 WARN L145 AmpleReduction]: Times succ was already a loop node:37755 [2025-04-26 18:42:44,565 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:6655 [2025-04-26 18:42:44,565 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:42:44,635 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 38101 states, 38100 states have (on average 2.917191601049869) internal successors, (in total 111145), 38100 states have internal predecessors, (111145), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:44,642 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:42:44,642 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:42:44,642 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:42:44,642 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:42:44,642 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:42:44,642 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:42:44,642 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:42:44,643 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:42:44,708 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 38101 states, 38100 states have (on average 2.917191601049869) internal successors, (in total 111145), 38100 states have internal predecessors, (111145), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:45,348 INFO L131 ngComponentsAnalysis]: Automaton has 5390 accepting balls. 27130 [2025-04-26 18:42:45,348 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:45,348 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:45,356 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:45,356 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:45,356 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:42:45,415 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 38101 states, 38100 states have (on average 2.917191601049869) internal successors, (in total 111145), 38100 states have internal predecessors, (111145), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:45,962 INFO L131 ngComponentsAnalysis]: Automaton has 5390 accepting balls. 27130 [2025-04-26 18:42:45,962 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:45,962 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:45,965 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:45,965 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:45,969 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[196] L13-->L28: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 18:42:45,969 INFO L754 eck$LassoCheckResult]: Loop: "[150] L28-->L30: 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[]" "[152] L30-->L28: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 18:42:45,972 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:45,973 INFO L85 PathProgramCache]: Analyzing trace with hash 4908, now seen corresponding path program 1 times [2025-04-26 18:42:45,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:45,978 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079060620] [2025-04-26 18:42:45,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:45,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:46,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:46,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:46,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:46,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:46,024 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:46,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:46,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:46,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:46,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:46,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:46,086 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:46,087 INFO L85 PathProgramCache]: Analyzing trace with hash 5763, now seen corresponding path program 1 times [2025-04-26 18:42:46,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:46,087 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60926469] [2025-04-26 18:42:46,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:46,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:46,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:46,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:46,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:46,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:46,093 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:46,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:46,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:46,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:46,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:46,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:46,102 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash 4721390, now seen corresponding path program 1 times [2025-04-26 18:42:46,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:46,102 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002783038] [2025-04-26 18:42:46,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:46,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:46,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:46,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:46,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:46,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:46,107 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:46,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:46,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:46,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:46,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:46,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:46,179 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:46,181 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:46,181 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:46,181 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:46,181 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:46,181 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:46,181 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:46,181 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:46,182 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:46,182 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:46,182 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:46,200 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:46,238 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:46,239 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:46,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:46,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:46,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:46,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 18:42:46,253 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:46,253 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:46,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:46,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:46,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:46,283 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:46,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 18:42:46,287 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:46,287 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:46,394 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:46,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:46,401 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:46,401 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:46,401 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:46,401 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:46,401 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:46,401 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:46,401 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:46,401 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:46,401 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:46,401 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:46,402 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:46,402 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:46,438 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:46,441 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:46,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:46,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:46,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:46,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 18:42:46,453 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:46,464 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:46,466 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:46,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:46,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:46,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:46,493 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:46,493 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:46,499 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:46,508 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:42:46,508 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:42:46,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:46,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:46,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:46,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 18:42:46,541 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:46,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 18:42:46,547 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:46,547 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:46,548 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-04-26 18:42:46,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 18:42:46,559 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:46,586 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:46,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:46,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:46,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:46,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:46,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:46,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:46,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:46,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:46,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:46,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:46,640 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:46,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:46,707 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 18:42:46,762 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 38101 states, 38100 states have (on average 2.917191601049869) internal successors, (in total 111145), 38100 states have internal predecessors, (111145), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:48,047 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 38101 states, 38100 states have (on average 2.917191601049869) internal successors, (in total 111145), 38100 states have internal predecessors, (111145), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 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 111359 states and 331748 transitions. Complement of second has 7 states. [2025-04-26 18:42:48,049 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 204 transitions. [2025-04-26 18:42:48,055 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 204 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 18:42:48,056 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:48,056 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 204 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 18:42:48,056 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:48,056 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 204 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 18:42:48,056 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:48,056 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111359 states and 331748 transitions. [2025-04-26 18:42:49,723 INFO L131 ngComponentsAnalysis]: Automaton has 6741 accepting balls. 26424 [2025-04-26 18:42:50,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111359 states to 85329 states and 256645 transitions. [2025-04-26 18:42:50,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39868 [2025-04-26 18:42:50,916 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 47040 [2025-04-26 18:42:50,917 INFO L74 IsDeterministic]: Start isDeterministic. Operand 85329 states and 256645 transitions. [2025-04-26 18:42:50,918 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:50,918 INFO L218 hiAutomatonCegarLoop]: Abstraction has 85329 states and 256645 transitions. [2025-04-26 18:42:51,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85329 states and 256645 transitions. [2025-04-26 18:42:52,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85329 to 78423. [2025-04-26 18:42:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78423 states, 78423 states have (on average 2.9742039962766027) internal successors, (in total 233246), 78422 states have internal predecessors, (233246), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78423 states to 78423 states and 233246 transitions. [2025-04-26 18:42:53,466 INFO L240 hiAutomatonCegarLoop]: Abstraction has 78423 states and 233246 transitions. [2025-04-26 18:42:53,466 INFO L438 stractBuchiCegarLoop]: Abstraction has 78423 states and 233246 transitions. [2025-04-26 18:42:53,466 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:42:53,466 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78423 states and 233246 transitions. [2025-04-26 18:42:54,044 INFO L131 ngComponentsAnalysis]: Automaton has 6741 accepting balls. 26424 [2025-04-26 18:42:54,044 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:54,044 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:54,047 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 18:42:54,047 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:54,048 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[196] L13-->L28: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[199] L13-1-->L43: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 18:42:54,048 INFO L754 eck$LassoCheckResult]: Loop: "[159] L43-->L45: Formula: (< v_x3_5 v_z_5) InVars {x3=v_x3_5, z=v_z_5} OutVars{x3=v_x3_5, z=v_z_5} AuxVars[] AssignedVars[]" "[161] L45-->L43: Formula: (= (+ v_x3_7 1) v_x3_6) InVars {x3=v_x3_7} OutVars{x3=v_x3_6} AuxVars[] AssignedVars[x3]" [2025-04-26 18:42:54,048 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:54,049 INFO L85 PathProgramCache]: Analyzing trace with hash 152347, now seen corresponding path program 1 times [2025-04-26 18:42:54,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:54,049 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311655014] [2025-04-26 18:42:54,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:54,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:54,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:54,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:54,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:54,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:54,052 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:54,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:54,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:54,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:54,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:54,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:54,057 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:54,057 INFO L85 PathProgramCache]: Analyzing trace with hash 6051, now seen corresponding path program 1 times [2025-04-26 18:42:54,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:54,057 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385052631] [2025-04-26 18:42:54,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:54,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:54,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:54,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:54,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:54,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:54,059 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:54,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:54,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:54,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:54,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:54,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:54,062 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:54,062 INFO L85 PathProgramCache]: Analyzing trace with hash 146410557, now seen corresponding path program 1 times [2025-04-26 18:42:54,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:54,062 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819756900] [2025-04-26 18:42:54,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:54,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:54,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:42:54,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:42:54,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:54,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:54,066 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:54,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:42:54,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:42:54,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:54,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:54,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:54,091 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:54,091 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:54,091 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:54,091 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:54,091 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:54,091 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:54,091 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:54,091 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:54,091 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:54,091 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:54,091 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:54,092 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:54,110 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:54,110 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:54,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:54,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:54,113 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:54,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 18:42:54,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:54,115 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:54,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:54,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:54,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:54,137 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:54,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 18:42:54,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:54,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:54,208 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:54,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 18:42:54,212 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:54,212 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:54,212 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:54,212 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:54,213 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:54,213 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:54,213 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:54,213 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:54,213 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:54,213 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:54,213 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:54,213 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:54,229 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:54,229 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:54,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:54,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:54,231 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:54,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 18:42:54,234 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:54,245 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:54,245 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:54,245 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:54,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:54,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:54,246 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:54,246 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:54,250 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:54,255 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:42:54,255 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:42:54,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:54,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:54,260 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:54,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 18:42:54,262 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:54,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 18:42:54,266 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:54,266 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:54,266 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-04-26 18:42:54,274 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 18:42:54,275 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:54,290 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:54,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:54,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:54,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:54,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:54,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:54,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:54,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:54,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:54,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:54,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:54,308 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:54,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:54,322 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 18:42:54,322 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 78423 states and 233246 transitions. cyclomatic complexity: 166255 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:56,893 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 78423 states and 233246 transitions. cyclomatic complexity: 166255. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 242411 states and 751113 transitions. Complement of second has 7 states. [2025-04-26 18:42:56,894 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:56,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2025-04-26 18:42:56,895 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 208 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 18:42:56,895 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:56,895 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 208 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 18:42:56,895 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:56,895 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 208 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 18:42:56,895 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:56,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 242411 states and 751113 transitions. [2025-04-26 18:43:00,035 INFO L131 ngComponentsAnalysis]: Automaton has 4923 accepting balls. 15022 [2025-04-26 18:43:01,651 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 242411 states to 156689 states and 478062 transitions. [2025-04-26 18:43:01,652 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41218 [2025-04-26 18:43:01,986 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52267 [2025-04-26 18:43:01,986 INFO L74 IsDeterministic]: Start isDeterministic. Operand 156689 states and 478062 transitions. [2025-04-26 18:43:01,986 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:43:01,986 INFO L218 hiAutomatonCegarLoop]: Abstraction has 156689 states and 478062 transitions. [2025-04-26 18:43:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156689 states and 478062 transitions. [2025-04-26 18:43:04,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156689 to 146103. [2025-04-26 18:43:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146103 states, 146103 states have (on average 3.1062264292998774) internal successors, (in total 453829), 146102 states have internal predecessors, (453829), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146103 states to 146103 states and 453829 transitions. [2025-04-26 18:43:06,056 INFO L240 hiAutomatonCegarLoop]: Abstraction has 146103 states and 453829 transitions. [2025-04-26 18:43:06,056 INFO L438 stractBuchiCegarLoop]: Abstraction has 146103 states and 453829 transitions. [2025-04-26 18:43:06,056 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:43:06,056 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 146103 states and 453829 transitions. [2025-04-26 18:43:07,128 INFO L131 ngComponentsAnalysis]: Automaton has 4923 accepting balls. 15022 [2025-04-26 18:43:07,129 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:43:07,129 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:43:07,136 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 18:43:07,136 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:43:07,136 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[196] L13-->L28: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[199] L13-1-->L43: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[202] L14-->L58: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-04-26 18:43:07,136 INFO L754 eck$LassoCheckResult]: Loop: "[168] L58-->L60: Formula: (< v_x4_5 v_z_9) InVars {x4=v_x4_5, z=v_z_9} OutVars{x4=v_x4_5, z=v_z_9} AuxVars[] AssignedVars[]" "[170] L60-->L58: Formula: (= v_x4_6 (+ v_x4_7 1)) InVars {x4=v_x4_7} OutVars{x4=v_x4_6} AuxVars[] AssignedVars[x4]" [2025-04-26 18:43:07,140 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:07,140 INFO L85 PathProgramCache]: Analyzing trace with hash 4722959, now seen corresponding path program 1 times [2025-04-26 18:43:07,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:07,140 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326674923] [2025-04-26 18:43:07,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:07,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:07,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:43:07,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:43:07,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:07,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:07,146 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:07,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:43:07,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:43:07,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:07,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:07,149 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:07,149 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:07,149 INFO L85 PathProgramCache]: Analyzing trace with hash 6339, now seen corresponding path program 1 times [2025-04-26 18:43:07,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:07,149 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725180535] [2025-04-26 18:43:07,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:07,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:07,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:07,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:07,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:07,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:07,156 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:07,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:07,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:07,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:07,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:07,160 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:07,161 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:07,161 INFO L85 PathProgramCache]: Analyzing trace with hash 243801681, now seen corresponding path program 1 times [2025-04-26 18:43:07,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:07,161 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298299844] [2025-04-26 18:43:07,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:07,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:07,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:43:07,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:43:07,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:07,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:07,167 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:07,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:43:07,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:43:07,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:07,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:07,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:07,185 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:07,185 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:07,185 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:07,185 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:07,185 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:43:07,185 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:07,185 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:07,185 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:07,185 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:43:07,185 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:07,185 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:07,186 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:07,204 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:07,204 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:43:07,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:07,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:07,206 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:07,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 18:43:07,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:43:07,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:07,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:07,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:07,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:07,231 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:07,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 18:43:07,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:43:07,234 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:07,302 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:43:07,306 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 18:43:07,306 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:07,306 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:07,306 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:07,306 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:07,306 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:43:07,306 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:07,306 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:07,306 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:07,306 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:43:07,306 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:07,306 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:07,307 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:07,323 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:07,323 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:43:07,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:07,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:07,325 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:07,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 18:43:07,328 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:43:07,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:43:07,338 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:43:07,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:43:07,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:43:07,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:43:07,339 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:43:07,339 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:43:07,341 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:43:07,343 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:43:07,343 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:43:07,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:07,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:07,345 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:07,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 18:43:07,348 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:43:07,351 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:43:07,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:07,353 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:43:07,353 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:43:07,353 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-04-26 18:43:07,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 18:43:07,359 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:43:07,370 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:07,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:43:07,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:43:07,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:07,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:07,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:43:07,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:07,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:07,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:07,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:07,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:07,388 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:43:07,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:07,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:43:07,404 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 18:43:07,404 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 146103 states and 453829 transitions. cyclomatic complexity: 323576 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:12,125 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 146103 states and 453829 transitions. cyclomatic complexity: 323576. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 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 475345 states and 1501896 transitions. Complement of second has 7 states. [2025-04-26 18:43:12,125 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:43:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 215 transitions. [2025-04-26 18:43:12,126 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 215 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 18:43:12,126 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:12,126 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 215 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 18:43:12,126 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:12,126 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 215 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 18:43:12,127 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:12,127 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 475345 states and 1501896 transitions. [2025-04-26 18:43:19,865 INFO L131 ngComponentsAnalysis]: Automaton has 3225 accepting balls. 7726 [2025-04-26 18:43:23,884 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 475345 states to 328992 states and 1035928 transitions. [2025-04-26 18:43:23,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57038 [2025-04-26 18:43:24,077 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65276 [2025-04-26 18:43:24,078 INFO L74 IsDeterministic]: Start isDeterministic. Operand 328992 states and 1035928 transitions. [2025-04-26 18:43:24,078 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:43:24,078 INFO L218 hiAutomatonCegarLoop]: Abstraction has 328992 states and 1035928 transitions. [2025-04-26 18:43:24,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328992 states and 1035928 transitions. [2025-04-26 18:43:30,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328992 to 315968. [2025-04-26 18:43:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315968 states, 315968 states have (on average 3.155965161028965) internal successors, (in total 997184), 315967 states have internal predecessors, (997184), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315968 states to 315968 states and 997184 transitions. [2025-04-26 18:43:33,299 INFO L240 hiAutomatonCegarLoop]: Abstraction has 315968 states and 997184 transitions. [2025-04-26 18:43:33,299 INFO L438 stractBuchiCegarLoop]: Abstraction has 315968 states and 997184 transitions. [2025-04-26 18:43:33,299 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 18:43:33,299 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 315968 states and 997184 transitions. [2025-04-26 18:43:35,781 INFO L131 ngComponentsAnalysis]: Automaton has 3225 accepting balls. 7726 [2025-04-26 18:43:35,782 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:43:35,782 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:43:35,788 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 18:43:35,788 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:43:35,789 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[196] L13-->L28: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[149] L28-->L32: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[151] L32-->L33: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[153] L33-->L34-1: Formula: (<= 5 v_x2_3) InVars {x2=v_x2_3} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[]" [2025-04-26 18:43:35,789 INFO L754 eck$LassoCheckResult]: Loop: "[155] L34-1-->L36: Formula: (< v_x3_1 v_z_3) InVars {x3=v_x3_1, z=v_z_3} OutVars{x3=v_x3_1, z=v_z_3} AuxVars[] AssignedVars[]" "[157] L36-->L34-1: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-04-26 18:43:35,789 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:35,789 INFO L85 PathProgramCache]: Analyzing trace with hash 146362251, now seen corresponding path program 1 times [2025-04-26 18:43:35,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:35,790 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629332603] [2025-04-26 18:43:35,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:35,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:35,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:43:35,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:43:35,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:35,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:43:35,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 18:43:35,835 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629332603] [2025-04-26 18:43:35,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629332603] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 18:43:35,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 18:43:35,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 18:43:35,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601964316] [2025-04-26 18:43:35,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 18:43:35,840 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 18:43:35,840 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:35,840 INFO L85 PathProgramCache]: Analyzing trace with hash 5923, now seen corresponding path program 1 times [2025-04-26 18:43:35,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:35,841 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385630604] [2025-04-26 18:43:35,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:35,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:35,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:35,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:35,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:35,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:35,845 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:35,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:35,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:35,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:35,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:35,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:35,859 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:35,860 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:35,860 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:35,860 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:35,860 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:43:35,860 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:35,860 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:35,860 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:35,860 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration4_Loop [2025-04-26 18:43:35,860 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:35,860 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:35,861 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:35,878 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:35,879 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:43:35,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:35,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:35,881 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:35,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 18:43:35,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:43:35,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:35,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:35,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:35,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:35,904 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:35,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 18:43:35,907 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:43:35,908 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:35,974 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:43:35,979 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 18:43:35,979 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:35,979 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:35,979 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:35,979 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:35,979 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:43:35,979 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:35,979 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:35,979 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:35,979 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration4_Loop [2025-04-26 18:43:35,979 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:35,979 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:35,980 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:35,999 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:36,000 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:43:36,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:36,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:36,003 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:43:36,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 18:43:36,005 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:43:36,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:43:36,016 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:43:36,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:43:36,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:43:36,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:43:36,018 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:43:36,018 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:43:36,020 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:43:36,024 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:43:36,024 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:43:36,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:36,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:36,026 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 18:43:36,028 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 18:43:36,029 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:43:36,033 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 18:43:36,033 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:43:36,033 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:43:36,033 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-04-26 18:43:36,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:36,040 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:43:36,052 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:36,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:43:36,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:43:36,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:36,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:36,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:43:36,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:36,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:36,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:36,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:36,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:36,070 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:43:36,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:43:36,083 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 18:43:36,083 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 315968 states and 997184 transitions. cyclomatic complexity: 709712 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:42,844 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 315968 states and 997184 transitions. cyclomatic complexity: 709712. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 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 686367 states and 2260307 transitions. Complement of second has 7 states. [2025-04-26 18:43:42,848 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:43:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:42,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2025-04-26 18:43:42,850 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 228 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 18:43:42,850 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:42,850 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 228 transitions. Stem has 7 letters. Loop has 2 letters. [2025-04-26 18:43:42,850 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:42,850 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 228 transitions. Stem has 5 letters. Loop has 4 letters. [2025-04-26 18:43:42,850 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:42,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 686367 states and 2260307 transitions. [2025-04-26 18:43:52,726 INFO L131 ngComponentsAnalysis]: Automaton has 3332 accepting balls. 7974 [2025-04-26 18:43:57,839 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 686367 states to 398868 states and 1243098 transitions. [2025-04-26 18:43:57,839 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59193 [2025-04-26 18:43:58,086 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 68817 [2025-04-26 18:43:58,087 INFO L74 IsDeterministic]: Start isDeterministic. Operand 398868 states and 1243098 transitions. [2025-04-26 18:43:58,088 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:43:58,088 INFO L218 hiAutomatonCegarLoop]: Abstraction has 398868 states and 1243098 transitions. [2025-04-26 18:43:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398868 states and 1243098 transitions.