/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 ../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:38:27,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:38:27,191 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:38:27,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:38:27,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:38:27,199 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:38:27,199 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:38:27,214 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:38:27,215 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:38:27,215 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:38:27,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:38:27,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:38:27,215 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:38:27,215 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:38:27,215 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:38:27,215 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:38:27,216 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:38:27,216 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:38:27,216 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:38:27,216 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:38:27,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:38:27,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:38:27,217 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:38:27,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:38:27,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:38:27,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:38:27,218 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:38:27,218 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:38:27,218 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:38:27,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:38:27,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:38:27,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:38:27,431 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:38:27,431 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:38:27,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl [2025-04-26 18:38:27,433 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl' [2025-04-26 18:38:27,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:38:27,449 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:38:27,450 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:38:27,450 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:38:27,450 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:38:27,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:38:27" (1/1) ... [2025-04-26 18:38:27,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:38:27" (1/1) ... [2025-04-26 18:38:27,479 INFO L138 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:38:27,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:38:27,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:38:27,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:38:27,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:38:27,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:38:27" (1/1) ... [2025-04-26 18:38:27,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:38:27" (1/1) ... [2025-04-26 18:38:27,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:38:27" (1/1) ... [2025-04-26 18:38:27,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:38:27" (1/1) ... [2025-04-26 18:38:27,492 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:38:27" (1/1) ... [2025-04-26 18:38:27,492 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:38:27" (1/1) ... [2025-04-26 18:38:27,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:38:27" (1/1) ... [2025-04-26 18:38:27,494 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:38:27" (1/1) ... [2025-04-26 18:38:27,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:38:27" (1/1) ... [2025-04-26 18:38:27,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:38:27,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:38:27,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:38:27,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:38:27,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:38:27" (1/1) ... [2025-04-26 18:38:27,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:38:27,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:38:27,530 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 18:38:27,533 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 18:38:27,552 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:38:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:38:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:38:27,552 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread1 given in one single declaration [2025-04-26 18:38:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure Thread1 [2025-04-26 18:38:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread1 [2025-04-26 18:38:27,553 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 18:38:27,586 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:38:27,587 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:38:27,641 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:38:27,641 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:38:27,649 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:38:27,649 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2025-04-26 18:38:27,649 INFO L201 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:38:27 BoogieIcfgContainer [2025-04-26 18:38:27,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:38:27,650 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:38:27,650 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:38:27,658 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:38:27,659 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:38:27,659 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:38:27" (1/2) ... [2025-04-26 18:38:27,660 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a7a0b3a and model type cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:38:27, skipping insertion in model container [2025-04-26 18:38:27,660 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:38:27,660 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:38:27" (2/2) ... [2025-04-26 18:38:27,662 INFO L376 chiAutomizerObserver]: Analyzing ICFG cutoff_test.bpl [2025-04-26 18:38:27,695 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-04-26 18:38:27,735 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:38:27,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:38:27,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:38:27,739 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 18:38:27,740 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 18:38:27,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 16 places, 16 transitions, 39 flow [2025-04-26 18:38:27,794 INFO L116 PetriNetUnfolderBase]: 3/14 cut-off events. [2025-04-26 18:38:27,796 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-26 18:38:27,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 14 events. 3/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 9. Up to 2 conditions per place. [2025-04-26 18:38:27,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 16 places, 16 transitions, 39 flow [2025-04-26 18:38:27,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 15 places, 14 transitions, 34 flow [2025-04-26 18:38:27,802 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 15 places, 14 transitions, 34 flow [2025-04-26 18:38:27,803 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 34 flow [2025-04-26 18:38:27,809 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 18 states have (on average 2.0) internal successors, (in total 36), 19 states have internal predecessors, (36), 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 18:38:27,810 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 20 states, 18 states have (on average 2.0) internal successors, (in total 36), 19 states have internal predecessors, (36), 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 18:38:27,811 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:38:27,832 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 23#[L20, $Ultimate##5]true [2025-04-26 18:38:27,840 WARN L140 AmpleReduction]: Number of pruned transitions: 4 [2025-04-26 18:38:27,840 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 1 [2025-04-26 18:38:27,841 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 1 [2025-04-26 18:38:27,841 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:11 [2025-04-26 18:38:27,841 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:4 [2025-04-26 18:38:27,841 WARN L145 AmpleReduction]: Times succ was already a loop node:0 [2025-04-26 18:38:27,841 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:0 [2025-04-26 18:38:27,841 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:38:27,841 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (in total 22), 15 states have internal predecessors, (22), 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 18:38:27,846 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:38:27,846 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:38:27,846 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:38:27,846 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:38:27,846 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:38:27,846 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:38:27,846 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:38:27,847 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:38:27,848 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (in total 22), 15 states have internal predecessors, (22), 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 18:38:27,854 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 4 [2025-04-26 18:38:27,855 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:38:27,855 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:38:27,857 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:38:27,857 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-04-26 18:38:27,857 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:38:27,857 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (in total 22), 15 states have internal predecessors, (22), 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 18:38:27,858 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 4 [2025-04-26 18:38:27,858 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:38:27,858 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:38:27,858 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:38:27,858 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-04-26 18:38:27,863 INFO L752 eck$LassoCheckResult]: Stem: "[45] $Ultimate##0-->$Ultimate##0: Formula: (= v_Thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{Thread1Thread1of1ForFork0_thidvar0=v_Thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[Thread1Thread1of1ForFork0_thidvar0]" "[36] $Ultimate##0-->$Ultimate##5: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" [2025-04-26 18:38:27,863 INFO L754 eck$LassoCheckResult]: Loop: "[39] $Ultimate##5-->$Ultimate##5: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" [2025-04-26 18:38:27,866 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:38:27,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2392, now seen corresponding path program 1 times [2025-04-26 18:38:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:38:27,874 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964333469] [2025-04-26 18:38:27,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:38:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:38:27,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:38:27,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:38:27,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:38:27,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:38:27,920 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:38:27,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:38:27,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:38:27,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:38:27,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:38:27,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:38:27,936 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:38:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash 70, now seen corresponding path program 1 times [2025-04-26 18:38:27,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:38:27,936 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135753435] [2025-04-26 18:38:27,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:38:27,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:38:27,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 18:38:27,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 18:38:27,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:38:27,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:38:27,941 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:38:27,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 18:38:27,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 18:38:27,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:38:27,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:38:27,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:38:27,943 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:38:27,943 INFO L85 PathProgramCache]: Analyzing trace with hash 74191, now seen corresponding path program 1 times [2025-04-26 18:38:27,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:38:27,943 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804646689] [2025-04-26 18:38:27,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:38:27,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:38:27,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:38:27,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:38:27,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:38:27,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:38:27,947 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:38:27,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:38:27,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:38:27,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:38:27,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:38:27,950 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:38:27,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:38:27,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:38:27,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:38:27,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:38:27,981 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:38:27,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:38:27,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:38:27,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:38:27,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:38:27,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-26 18:38:27,999 INFO L201 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:38:27 BoogieIcfgContainer [2025-04-26 18:38:27,999 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:38:28,000 INFO L158 Benchmark]: Toolchain (without parser) took 551.25ms. Allocated memory is still 167.8MB. Free memory was 94.7MB in the beginning and 62.4MB in the end (delta: 32.3MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2025-04-26 18:38:28,001 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.98ms. Allocated memory is still 167.8MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:38:28,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.38ms. Allocated memory is still 167.8MB. Free memory was 94.6MB in the beginning and 92.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:38:28,001 INFO L158 Benchmark]: Boogie Preprocessor took 23.20ms. Allocated memory is still 167.8MB. Free memory was 92.8MB in the beginning and 91.9MB in the end (delta: 894.1kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:38:28,001 INFO L158 Benchmark]: RCFGBuilder took 144.52ms. Allocated memory is still 167.8MB. Free memory was 91.8MB in the beginning and 83.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 18:38:28,002 INFO L158 Benchmark]: BuchiAutomizer took 349.32ms. Allocated memory is still 167.8MB. Free memory was 83.4MB in the beginning and 62.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-26 18:38:28,002 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.98ms. Allocated memory is still 167.8MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.38ms. Allocated memory is still 167.8MB. Free memory was 94.6MB in the beginning and 92.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 23.20ms. Allocated memory is still 167.8MB. Free memory was 92.8MB in the beginning and 91.9MB in the end (delta: 894.1kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 144.52ms. Allocated memory is still 167.8MB. Free memory was 91.8MB in the beginning and 83.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 349.32ms. Allocated memory is still 167.8MB. Free memory was 83.4MB in the beginning and 62.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 111, Number of transitions in reduction automaton: 22, Number of states in reduction automaton: 16, Underlying: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 33]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L20] FORK 0 fork 1 Thread1(); Loop: [L33] assume true; End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 33]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L20] FORK 0 fork 1 Thread1(); Loop: [L33] assume true; End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2025-04-26 18:38:28,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...