/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/BuchiAutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/singleton.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:27:40,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:27:40,473 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:27:40,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:27:40,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:27:40,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:27:40,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:27:40,500 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:27:40,501 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:27:40,501 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:27:40,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:27:40,502 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:27:40,502 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:27:40,502 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:27:40,502 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:27:40,502 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:27:40,502 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:27:40,503 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:27:40,503 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:27:40,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:27:40,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:27:40,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:27:40,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:27:40,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:27:40,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:27:40,504 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:27:40,504 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:27:40,504 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:27:40,504 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:27:40,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:27:40,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:27:40,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:27:40,859 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-26 16:27:40,859 INFO L274 PluginConnector]: CDTParser initialized [2025-04-26 16:27:40,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread/singleton.i [2025-04-26 16:27:42,212 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/e472476cc/044d7cd1b8154f29a4677db833662bf9/FLAG73a0c2113 [2025-04-26 16:27:42,515 INFO L389 CDTParser]: Found 1 translation units. [2025-04-26 16:27:42,515 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i [2025-04-26 16:27:42,529 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/e472476cc/044d7cd1b8154f29a4677db833662bf9/FLAG73a0c2113 [2025-04-26 16:27:43,212 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/e472476cc/044d7cd1b8154f29a4677db833662bf9 [2025-04-26 16:27:43,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:27:43,215 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-26 16:27:43,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-26 16:27:43,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-26 16:27:43,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-26 16:27:43,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12525e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43, skipping insertion in model container [2025-04-26 16:27:43,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,247 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-26 16:27:43,515 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i[55547,55560] [2025-04-26 16:27:43,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-26 16:27:43,544 INFO L200 MainTranslator]: Completed pre-run [2025-04-26 16:27:43,585 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i[55547,55560] [2025-04-26 16:27:43,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-26 16:27:43,639 INFO L204 MainTranslator]: Completed translation [2025-04-26 16:27:43,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43 WrapperNode [2025-04-26 16:27:43,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-26 16:27:43,642 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:27:43,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:27:43,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:27:43,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,672 INFO L138 Inliner]: procedures = 323, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2025-04-26 16:27:43,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:27:43,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:27:43,673 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:27:43,673 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:27:43,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,680 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,684 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,684 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,685 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:27:43,690 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:27:43,690 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:27:43,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:27:43,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43" (1/1) ... [2025-04-26 16:27:43,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:27:43,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:27:43,718 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 16:27:43,720 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 16:27:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-26 16:27:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-26 16:27:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-26 16:27:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2025-04-26 16:27:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2025-04-26 16:27:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:27:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:27:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:27:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:27:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:27:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:27:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-26 16:27:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-26 16:27:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-26 16:27:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-26 16:27:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:27:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:27:43,741 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 16:27:43,839 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:27:43,840 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:27:43,948 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:27:43,948 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:27:43,968 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:27:43,969 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:27:43,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:27:43 BoogieIcfgContainer [2025-04-26 16:27:43,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:27:43,969 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:27:43,970 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:27:43,975 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:27:43,976 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:27:43,976 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.04 04:27:43" (1/3) ... [2025-04-26 16:27:43,977 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@21d3394b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:27:43, skipping insertion in model container [2025-04-26 16:27:43,977 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:27:43,978 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:27:43" (2/3) ... [2025-04-26 16:27:43,978 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@21d3394b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:27:43, skipping insertion in model container [2025-04-26 16:27:43,978 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:27:43,978 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:27:43" (3/3) ... [2025-04-26 16:27:43,979 INFO L376 chiAutomizerObserver]: Analyzing ICFG singleton.i [2025-04-26 16:27:44,088 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2025-04-26 16:27:44,122 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:27:44,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:27:44,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:27:44,126 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 16:27:44,127 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 16:27:44,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 157 transitions, 411 flow [2025-04-26 16:27:44,252 INFO L116 PetriNetUnfolderBase]: 6/103 cut-off events. [2025-04-26 16:27:44,256 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-26 16:27:44,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 103 events. 6/103 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 92. Up to 3 conditions per place. [2025-04-26 16:27:44,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 157 transitions, 411 flow [2025-04-26 16:27:44,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 103 transitions, 257 flow [2025-04-26 16:27:44,265 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 116 places, 103 transitions, 257 flow [2025-04-26 16:27:44,271 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:27:44,920 WARN L140 AmpleReduction]: Number of pruned transitions: 3471 [2025-04-26 16:27:44,921 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 16:27:44,921 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 0 [2025-04-26 16:27:44,921 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:418 [2025-04-26 16:27:44,921 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:1360 [2025-04-26 16:27:44,921 WARN L145 AmpleReduction]: Times succ was already a loop node:0 [2025-04-26 16:27:44,921 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:0 [2025-04-26 16:27:44,921 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:27:44,931 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 1779 states, 1777 states have (on average 1.4687675858187956) internal successors, (in total 2610), 1778 states have internal predecessors, (2610), 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 16:27:44,938 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:27:44,938 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:27:44,938 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:27:44,938 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:27:44,938 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:27:44,938 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:27:44,938 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:27:44,938 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:27:44,944 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 1779 states, 1777 states have (on average 1.4687675858187956) internal successors, (in total 2610), 1778 states have internal predecessors, (2610), 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 16:27:44,993 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:27:44,994 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:27:45,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2025-04-26 16:27:45,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:27:45 BoogieIcfgContainer [2025-04-26 16:27:45,006 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:27:45,007 INFO L158 Benchmark]: Toolchain (without parser) took 1791.74ms. Allocated memory is still 155.2MB. Free memory was 108.8MB in the beginning and 48.5MB in the end (delta: 60.3MB). Peak memory consumption was 60.7MB. Max. memory is 8.0GB. [2025-04-26 16:27:45,008 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:27:45,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.93ms. Allocated memory is still 155.2MB. Free memory was 108.8MB in the beginning and 74.8MB in the end (delta: 34.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2025-04-26 16:27:45,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.89ms. Allocated memory is still 155.2MB. Free memory was 74.8MB in the beginning and 72.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:27:45,008 INFO L158 Benchmark]: Boogie Preprocessor took 16.30ms. Allocated memory is still 155.2MB. Free memory was 72.0MB in the beginning and 70.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:27:45,008 INFO L158 Benchmark]: RCFGBuilder took 279.15ms. Allocated memory is still 155.2MB. Free memory was 70.6MB in the beginning and 56.0MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2025-04-26 16:27:45,009 INFO L158 Benchmark]: BuchiAutomizer took 1036.87ms. Allocated memory is still 155.2MB. Free memory was 56.0MB in the beginning and 48.5MB in the end (delta: 7.5MB). Peak memory consumption was 6.1MB. Max. memory is 8.0GB. [2025-04-26 16:27:45,013 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 424.93ms. Allocated memory is still 155.2MB. Free memory was 108.8MB in the beginning and 74.8MB in the end (delta: 34.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.89ms. Allocated memory is still 155.2MB. Free memory was 74.8MB in the beginning and 72.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.30ms. Allocated memory is still 155.2MB. Free memory was 72.0MB in the beginning and 70.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 279.15ms. Allocated memory is still 155.2MB. Free memory was 70.6MB in the beginning and 56.0MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * BuchiAutomizer took 1036.87ms. Allocated memory is still 155.2MB. Free memory was 56.0MB in the beginning and 48.5MB in the end (delta: 7.5MB). Peak memory consumption was 6.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 0 iterations. TraceHistogramMax:0. Analysis of lassos took 0.0s. 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: nont0 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: 0.8s InitialAbstraction: Time to compute Ample Reduction [ms]: 803, Number of transitions in reduction automaton: 2610, Number of states in reduction automaton: 1779, Underlying: - StatisticsResult: Constructed decomposition of program Trivial decomposition. There is no loop in your program. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:27:45,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...