/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/weaver-benchmarks/generated/spaghetti.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:54:19,957 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:54:20,011 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:54:20,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:54:20,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:54:20,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:54:20,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:54:20,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:54:20,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:54:20,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:54:20,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:54:20,034 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:54:20,034 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:54:20,034 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:54:20,034 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:54:20,034 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:54:20,034 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:54:20,034 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:54:20,034 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:54:20,034 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:54:20,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:54:20,035 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:54:20,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:54:20,036 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:54:20,036 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:54:20,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:54:20,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:54:20,036 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:54:20,036 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:54:20,036 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:54:20,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:54:20,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:54:20,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:54:20,263 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:54:20,263 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:54:20,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl [2025-04-26 16:54:20,264 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl' [2025-04-26 16:54:20,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:54:20,280 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:54:20,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:54:20,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:54:20,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:54:20,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:20" (1/1) ... [2025-04-26 16:54:20,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:20" (1/1) ... [2025-04-26 16:54:20,313 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:54:20,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:54:20,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:54:20,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:54:20,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:54:20,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:20" (1/1) ... [2025-04-26 16:54:20,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:20" (1/1) ... [2025-04-26 16:54:20,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:20" (1/1) ... [2025-04-26 16:54:20,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:20" (1/1) ... [2025-04-26 16:54:20,322 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:20" (1/1) ... [2025-04-26 16:54:20,322 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:20" (1/1) ... [2025-04-26 16:54:20,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:20" (1/1) ... [2025-04-26 16:54:20,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:20" (1/1) ... [2025-04-26 16:54:20,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:20" (1/1) ... [2025-04-26 16:54:20,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:54:20,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:54:20,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:54:20,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:54:20,337 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:20" (1/1) ... [2025-04-26 16:54:20,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:54:20,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:54:20,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 16:54:20,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 16:54:20,384 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:54:20,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:54:20,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:54:20,384 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:54:20,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:54:20,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:54:20,384 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:54:20,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:54:20,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:54:20,384 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:54:20,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:54:20,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:54:20,385 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:54:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:54:20,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:54:20,385 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:54:20,418 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:54:20,419 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:54:20,488 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:54:20,488 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:54:20,495 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:54:20,495 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2025-04-26 16:54:20,495 INFO L201 PluginConnector]: Adding new model spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:54:20 BoogieIcfgContainer [2025-04-26 16:54:20,495 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:54:20,496 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:54:20,496 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:54:20,500 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:54:20,500 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:54:20,500 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:20" (1/2) ... [2025-04-26 16:54:20,501 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e9c40ba and model type spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:54:20, skipping insertion in model container [2025-04-26 16:54:20,501 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:54:20,501 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:54:20" (2/2) ... [2025-04-26 16:54:20,502 INFO L376 chiAutomizerObserver]: Analyzing ICFG spaghetti.wvr.bpl [2025-04-26 16:54:20,544 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-26 16:54:20,580 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:54:20,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:54:20,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:54:20,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 16:54:20,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 16:54:20,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 38 transitions, 104 flow [2025-04-26 16:54:20,658 INFO L116 PetriNetUnfolderBase]: 4/30 cut-off events. [2025-04-26 16:54:20,659 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-26 16:54:20,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 30 events. 4/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 61 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-04-26 16:54:20,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 38 transitions, 104 flow [2025-04-26 16:54:20,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 30 transitions, 84 flow [2025-04-26 16:54:20,669 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 39 places, 30 transitions, 84 flow [2025-04-26 16:54:20,674 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:54:20,991 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 1066#[thread3EXIT, L26, L15, L59]true [2025-04-26 16:54:21,013 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 1226#[L28, L60, L17, L49, L36]true [2025-04-26 16:54:21,013 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 1062#[L47, L60, L26, L15, L36]true [2025-04-26 16:54:21,014 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 1146#[L47, L28, L38, L60, L17]true [2025-04-26 16:54:21,014 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 1060#[L26, L15, L59, L38]true [2025-04-26 16:54:21,015 WARN L275 AmpleReduction]: Non-loop node is now a loop node: 488#[L26, L58, L17]true [2025-04-26 16:54:21,015 WARN L140 AmpleReduction]: Number of pruned transitions: 987 [2025-04-26 16:54:21,015 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 6 [2025-04-26 16:54:21,015 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 187 [2025-04-26 16:54:21,015 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:38 [2025-04-26 16:54:21,015 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:383 [2025-04-26 16:54:21,015 WARN L145 AmpleReduction]: Times succ was already a loop node:236 [2025-04-26 16:54:21,016 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:213 [2025-04-26 16:54:21,016 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:54:21,020 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 603 states, 601 states have (on average 2.227953410981697) internal successors, (in total 1339), 602 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:54:21,027 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:54:21,028 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:54:21,028 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:54:21,028 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:54:21,028 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:54:21,028 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:54:21,028 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:54:21,028 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:54:21,031 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 603 states, 601 states have (on average 2.227953410981697) internal successors, (in total 1339), 602 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:54:21,067 INFO L131 ngComponentsAnalysis]: Automaton has 102 accepting balls. 495 [2025-04-26 16:54:21,068 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:54:21,068 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:54:21,075 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:54:21,075 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:54:21,075 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:54:21,076 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 603 states, 601 states have (on average 2.227953410981697) internal successors, (in total 1339), 602 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:54:21,087 INFO L131 ngComponentsAnalysis]: Automaton has 102 accepting balls. 495 [2025-04-26 16:54:21,087 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:54:21,087 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:54:21,087 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:54:21,087 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:54:21,092 INFO L752 eck$LassoCheckResult]: Stem: "[101] $Ultimate##0-->L15: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0]" [2025-04-26 16:54:21,092 INFO L754 eck$LassoCheckResult]: Loop: "[73] L15-->L17: Formula: true InVars {} OutVars{x_0=v_x_0_1} AuxVars[] AssignedVars[x_0]" "[75] L17-->L18: Formula: (= v_x_0_2 (+ 3 v_x_0_3)) InVars {x_0=v_x_0_3} OutVars{x_0=v_x_0_2} AuxVars[] AssignedVars[x_0]" "[76] L18-->L15: Formula: (= (* 2 v_x_0_5) v_x_0_4) InVars {x_0=v_x_0_5} OutVars{x_0=v_x_0_4} AuxVars[] AssignedVars[x_0]" [2025-04-26 16:54:21,095 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:54:21,096 INFO L85 PathProgramCache]: Analyzing trace with hash 132, now seen corresponding path program 1 times [2025-04-26 16:54:21,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:54:21,101 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409437674] [2025-04-26 16:54:21,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:54:21,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:54:21,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:54:21,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:54:21,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:21,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:21,149 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:54:21,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:54:21,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:54:21,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:21,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:21,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:54:21,167 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:54:21,167 INFO L85 PathProgramCache]: Analyzing trace with hash 102345, now seen corresponding path program 1 times [2025-04-26 16:54:21,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:54:21,167 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926903270] [2025-04-26 16:54:21,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:54:21,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:54:21,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:54:21,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:54:21,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:21,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:21,175 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:54:21,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:54:21,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:54:21,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:21,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:21,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:54:21,181 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:54:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash 4004966, now seen corresponding path program 1 times [2025-04-26 16:54:21,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:54:21,182 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260521274] [2025-04-26 16:54:21,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:54:21,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:54:21,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:54:21,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:54:21,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:21,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:21,187 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:54:21,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:54:21,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:54:21,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:21,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:21,190 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:54:21,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:54:21,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:54:21,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:21,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:21,247 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:54:21,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:54:21,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:54:21,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:21,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:21,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-26 16:54:21,289 INFO L201 PluginConnector]: Adding new model spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:54:21 BoogieIcfgContainer [2025-04-26 16:54:21,289 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:54:21,290 INFO L158 Benchmark]: Toolchain (without parser) took 1009.65ms. Allocated memory was 159.4MB in the beginning and 318.8MB in the end (delta: 159.4MB). Free memory was 86.5MB in the beginning and 273.5MB in the end (delta: -187.0MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. [2025-04-26 16:54:21,291 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:54:21,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.44ms. Allocated memory is still 159.4MB. Free memory was 86.5MB in the beginning and 84.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:54:21,291 INFO L158 Benchmark]: Boogie Preprocessor took 18.04ms. Allocated memory is still 159.4MB. Free memory was 84.6MB in the beginning and 83.6MB in the end (delta: 969.5kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:54:21,291 INFO L158 Benchmark]: RCFGBuilder took 161.35ms. Allocated memory is still 159.4MB. Free memory was 83.6MB in the beginning and 74.5MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:54:21,292 INFO L158 Benchmark]: BuchiAutomizer took 793.41ms. Allocated memory was 159.4MB in the beginning and 318.8MB in the end (delta: 159.4MB). Free memory was 74.4MB in the beginning and 273.5MB in the end (delta: -199.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:54:21,294 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 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.44ms. Allocated memory is still 159.4MB. Free memory was 86.5MB in the beginning and 84.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 18.04ms. Allocated memory is still 159.4MB. Free memory was 84.6MB in the beginning and 83.6MB in the end (delta: 969.5kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 161.35ms. Allocated memory is still 159.4MB. Free memory was 83.6MB in the beginning and 74.5MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 793.41ms. Allocated memory was 159.4MB in the beginning and 318.8MB in the end (delta: 159.4MB). Free memory was 74.4MB in the beginning and 273.5MB in the end (delta: -199.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s 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: 0.4s InitialAbstraction: Time to compute Ample Reduction [ms]: 439, Number of transitions in reduction automaton: 1339, Number of states in reduction automaton: 603, 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: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L57] FORK 0 fork 1 thread1(); Loop: [L16] havoc x_0; [L17] x_0 := x_0 + 3; [L18] x_0 := 2 * x_0; End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L57] FORK 0 fork 1 thread1(); Loop: [L16] havoc x_0; [L17] x_0 := x_0 + 3; [L18] x_0 := 2 * x_0; End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2025-04-26 16:54:21,306 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...