/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:42:25,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:42:25,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:42:25,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:42:25,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:42:25,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:42:25,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:42:25,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:42:25,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:42:25,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:42:25,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:42:25,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:42:25,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:42:25,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:42:25,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:42:25,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:42:25,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:42:25,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:42:25,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:42:25,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:42:25,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:42:25,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:42:25,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:42:25,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:42:25,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 01:42:25,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 01:42:25,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 01:42:25,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 01:42:25,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 01:42:25,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 01:42:25,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 01:42:25,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 01:42:25,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 01:42:25,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 01:42:25,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 01:42:25,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 01:42:25,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 01:42:25,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 01:42:25,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:42:25,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:42:25,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:42:25,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 01:42:25,980 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:42:25,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:42:25,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:42:25,981 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:42:25,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:42:25,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:42:25,982 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:42:25,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:42:25,983 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:42:25,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:42:25,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:42:25,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:42:25,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:42:25,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:42:25,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:42:25,984 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:42:25,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:42:25,984 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:42:25,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:42:25,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:42:25,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:42:25,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:42:25,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:42:25,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:42:25,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:42:25,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:42:25,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:42:25,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:42:25,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:42:25,985 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:42:25,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:42:25,985 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:42:26,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:42:26,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:42:26,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:42:26,200 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:42:26,200 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:42:26,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-01-28 01:42:27,075 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:42:27,298 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:42:27,298 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-01-28 01:42:27,307 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96821f0c3/fdcdddf47d7846a49228476e798b10e0/FLAGd4fc7dad1 [2023-01-28 01:42:27,319 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96821f0c3/fdcdddf47d7846a49228476e798b10e0 [2023-01-28 01:42:27,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:42:27,326 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:42:27,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:42:27,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:42:27,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:42:27,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:42:27" (1/1) ... [2023-01-28 01:42:27,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5bdee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27, skipping insertion in model container [2023-01-28 01:42:27,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:42:27" (1/1) ... [2023-01-28 01:42:27,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:42:27,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:42:27,604 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i[30176,30189] [2023-01-28 01:42:27,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:42:27,633 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:42:27,661 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i[30176,30189] [2023-01-28 01:42:27,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:42:27,694 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:42:27,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27 WrapperNode [2023-01-28 01:42:27,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:42:27,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:42:27,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:42:27,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:42:27,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27" (1/1) ... [2023-01-28 01:42:27,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27" (1/1) ... [2023-01-28 01:42:27,734 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2023-01-28 01:42:27,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:42:27,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:42:27,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:42:27,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:42:27,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27" (1/1) ... [2023-01-28 01:42:27,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27" (1/1) ... [2023-01-28 01:42:27,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27" (1/1) ... [2023-01-28 01:42:27,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27" (1/1) ... [2023-01-28 01:42:27,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27" (1/1) ... [2023-01-28 01:42:27,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27" (1/1) ... [2023-01-28 01:42:27,756 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27" (1/1) ... [2023-01-28 01:42:27,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27" (1/1) ... [2023-01-28 01:42:27,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:42:27,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:42:27,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:42:27,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:42:27,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27" (1/1) ... [2023-01-28 01:42:27,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:42:27,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:42:27,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 01:42:27,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 01:42:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:42:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:42:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:42:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:42:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:42:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:42:27,804 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:42:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:42:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:42:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:42:27,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:42:27,806 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 01:42:27,891 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:42:27,892 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:42:28,068 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:42:28,073 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:42:28,073 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-01-28 01:42:28,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:42:28 BoogieIcfgContainer [2023-01-28 01:42:28,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:42:28,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:42:28,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:42:28,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:42:28,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:42:27" (1/3) ... [2023-01-28 01:42:28,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1a96ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:42:28, skipping insertion in model container [2023-01-28 01:42:28,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:42:27" (2/3) ... [2023-01-28 01:42:28,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1a96ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:42:28, skipping insertion in model container [2023-01-28 01:42:28,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:42:28" (3/3) ... [2023-01-28 01:42:28,079 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2023-01-28 01:42:28,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:42:28,089 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:42:28,089 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:42:28,123 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:42:28,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 114 transitions, 236 flow [2023-01-28 01:42:28,189 INFO L130 PetriNetUnfolder]: 18/147 cut-off events. [2023-01-28 01:42:28,189 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:42:28,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 147 events. 18/147 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 306 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-01-28 01:42:28,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 114 transitions, 236 flow [2023-01-28 01:42:28,198 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 109 transitions, 223 flow [2023-01-28 01:42:28,200 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:28,206 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 109 transitions, 223 flow [2023-01-28 01:42:28,208 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 109 transitions, 223 flow [2023-01-28 01:42:28,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 109 transitions, 223 flow [2023-01-28 01:42:28,238 INFO L130 PetriNetUnfolder]: 17/142 cut-off events. [2023-01-28 01:42:28,239 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:42:28,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 142 events. 17/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 289 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-01-28 01:42:28,241 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-01-28 01:42:31,266 INFO L134 LiptonReduction]: Checked pairs total: 3935 [2023-01-28 01:42:31,266 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-01-28 01:42:31,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:31,280 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5565d703, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:31,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:31,283 INFO L130 PetriNetUnfolder]: 3/23 cut-off events. [2023-01-28 01:42:31,283 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:42:31,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:31,284 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:42:31,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:31,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:31,287 INFO L85 PathProgramCache]: Analyzing trace with hash 120607350, now seen corresponding path program 1 times [2023-01-28 01:42:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:31,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094641836] [2023-01-28 01:42:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:31,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:31,366 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:31,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:31,396 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:31,397 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:31,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:42:31,398 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:31,400 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:31,400 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:31,400 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:42:31,415 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:42:31,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 144 transitions, 306 flow [2023-01-28 01:42:31,449 INFO L130 PetriNetUnfolder]: 32/234 cut-off events. [2023-01-28 01:42:31,449 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:42:31,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 234 events. 32/234 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 616 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 149. Up to 8 conditions per place. [2023-01-28 01:42:31,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 144 transitions, 306 flow [2023-01-28 01:42:31,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 144 transitions, 306 flow [2023-01-28 01:42:31,452 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:31,452 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 144 transitions, 306 flow [2023-01-28 01:42:31,453 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 144 transitions, 306 flow [2023-01-28 01:42:31,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 144 transitions, 306 flow [2023-01-28 01:42:31,473 INFO L130 PetriNetUnfolder]: 32/234 cut-off events. [2023-01-28 01:42:31,473 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:42:31,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 234 events. 32/234 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 616 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 149. Up to 8 conditions per place. [2023-01-28 01:42:31,477 INFO L119 LiptonReduction]: Number of co-enabled transitions 6552 [2023-01-28 01:42:34,252 INFO L134 LiptonReduction]: Checked pairs total: 16853 [2023-01-28 01:42:34,252 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-01-28 01:42:34,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:34,254 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5565d703, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:34,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:34,258 INFO L130 PetriNetUnfolder]: 14/62 cut-off events. [2023-01-28 01:42:34,259 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:42:34,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:34,259 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:42:34,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:34,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:34,260 INFO L85 PathProgramCache]: Analyzing trace with hash 586384534, now seen corresponding path program 1 times [2023-01-28 01:42:34,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:34,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847140533] [2023-01-28 01:42:34,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:34,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:34,281 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:34,312 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:34,312 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:34,312 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:34,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:42:34,313 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:34,313 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:34,313 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:34,313 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:42:34,344 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:42:34,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 174 transitions, 378 flow [2023-01-28 01:42:34,375 INFO L130 PetriNetUnfolder]: 51/352 cut-off events. [2023-01-28 01:42:34,375 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:42:34,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 352 events. 51/352 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1075 event pairs, 1 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 242. Up to 16 conditions per place. [2023-01-28 01:42:34,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 174 transitions, 378 flow [2023-01-28 01:42:34,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 174 transitions, 378 flow [2023-01-28 01:42:34,384 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:34,384 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 174 transitions, 378 flow [2023-01-28 01:42:34,385 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 174 transitions, 378 flow [2023-01-28 01:42:34,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 174 transitions, 378 flow [2023-01-28 01:42:34,412 INFO L130 PetriNetUnfolder]: 51/352 cut-off events. [2023-01-28 01:42:34,415 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:42:34,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 352 events. 51/352 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1075 event pairs, 1 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 242. Up to 16 conditions per place. [2023-01-28 01:42:34,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 12432 [2023-01-28 01:42:37,429 INFO L134 LiptonReduction]: Checked pairs total: 32754 [2023-01-28 01:42:37,429 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-01-28 01:42:37,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:37,435 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5565d703, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:37,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:37,440 INFO L130 PetriNetUnfolder]: 21/93 cut-off events. [2023-01-28 01:42:37,440 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:42:37,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:37,440 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:42:37,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:37,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:37,445 INFO L85 PathProgramCache]: Analyzing trace with hash 966560219, now seen corresponding path program 1 times [2023-01-28 01:42:37,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:37,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522163984] [2023-01-28 01:42:37,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:37,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:37,483 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:37,515 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:37,515 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:37,516 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:37,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:42:37,516 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:37,516 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:37,516 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:37,516 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:42:37,529 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:42:37,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 204 transitions, 452 flow [2023-01-28 01:42:37,579 INFO L130 PetriNetUnfolder]: 82/534 cut-off events. [2023-01-28 01:42:37,580 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:42:37,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 534 events. 82/534 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1958 event pairs, 6 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 372. Up to 32 conditions per place. [2023-01-28 01:42:37,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 204 transitions, 452 flow [2023-01-28 01:42:37,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 204 transitions, 452 flow [2023-01-28 01:42:37,585 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:37,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 204 transitions, 452 flow [2023-01-28 01:42:37,585 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 204 transitions, 452 flow [2023-01-28 01:42:37,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 204 transitions, 452 flow [2023-01-28 01:42:37,622 INFO L130 PetriNetUnfolder]: 82/534 cut-off events. [2023-01-28 01:42:37,622 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:42:37,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 534 events. 82/534 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1958 event pairs, 6 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 372. Up to 32 conditions per place. [2023-01-28 01:42:37,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 20048 [2023-01-28 01:42:40,524 INFO L134 LiptonReduction]: Checked pairs total: 61661 [2023-01-28 01:42:40,525 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-01-28 01:42:40,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:40,526 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5565d703, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:40,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:40,533 INFO L130 PetriNetUnfolder]: 29/128 cut-off events. [2023-01-28 01:42:40,533 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 01:42:40,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:40,533 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:40,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:40,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash -978959003, now seen corresponding path program 1 times [2023-01-28 01:42:40,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:40,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787987271] [2023-01-28 01:42:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:40,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:40,554 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:40,567 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:40,567 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:40,567 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:40,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:42:40,568 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:40,568 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:40,568 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:40,568 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:42:40,592 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:42:40,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 234 transitions, 528 flow [2023-01-28 01:42:40,666 INFO L130 PetriNetUnfolder]: 141/848 cut-off events. [2023-01-28 01:42:40,666 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:42:40,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 848 events. 141/848 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3650 event pairs, 23 based on Foata normal form. 0/717 useless extension candidates. Maximal degree in co-relation 579. Up to 80 conditions per place. [2023-01-28 01:42:40,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 234 transitions, 528 flow [2023-01-28 01:42:40,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 234 transitions, 528 flow [2023-01-28 01:42:40,676 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:40,676 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 234 transitions, 528 flow [2023-01-28 01:42:40,677 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 234 transitions, 528 flow [2023-01-28 01:42:40,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 234 transitions, 528 flow [2023-01-28 01:42:40,772 INFO L130 PetriNetUnfolder]: 141/848 cut-off events. [2023-01-28 01:42:40,772 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:42:40,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 848 events. 141/848 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3650 event pairs, 23 based on Foata normal form. 0/717 useless extension candidates. Maximal degree in co-relation 579. Up to 80 conditions per place. [2023-01-28 01:42:40,792 INFO L119 LiptonReduction]: Number of co-enabled transitions 29400 [2023-01-28 01:42:43,747 INFO L134 LiptonReduction]: Checked pairs total: 84233 [2023-01-28 01:42:43,747 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-01-28 01:42:43,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:43,749 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5565d703, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:43,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:43,761 INFO L130 PetriNetUnfolder]: 48/191 cut-off events. [2023-01-28 01:42:43,761 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 01:42:43,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:43,761 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:43,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:43,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:43,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1490539703, now seen corresponding path program 1 times [2023-01-28 01:42:43,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:43,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924956250] [2023-01-28 01:42:43,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:43,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:43,793 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:43,807 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:43,807 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:43,807 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:43,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:42:43,808 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:43,808 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:43,808 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:43,808 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:42:43,821 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:42:43,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 264 transitions, 606 flow [2023-01-28 01:42:43,978 INFO L130 PetriNetUnfolder]: 264/1434 cut-off events. [2023-01-28 01:42:43,978 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:42:43,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 1434 events. 264/1434 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7660 event pairs, 72 based on Foata normal form. 0/1227 useless extension candidates. Maximal degree in co-relation 947. Up to 192 conditions per place. [2023-01-28 01:42:43,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 264 transitions, 606 flow [2023-01-28 01:42:43,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 264 transitions, 606 flow [2023-01-28 01:42:43,995 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:43,996 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 264 transitions, 606 flow [2023-01-28 01:42:43,996 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 264 transitions, 606 flow [2023-01-28 01:42:43,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 264 transitions, 606 flow [2023-01-28 01:42:44,129 INFO L130 PetriNetUnfolder]: 264/1434 cut-off events. [2023-01-28 01:42:44,129 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:42:44,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 1434 events. 264/1434 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7660 event pairs, 72 based on Foata normal form. 0/1227 useless extension candidates. Maximal degree in co-relation 947. Up to 192 conditions per place. [2023-01-28 01:42:44,177 INFO L119 LiptonReduction]: Number of co-enabled transitions 40488 [2023-01-28 01:42:47,133 INFO L134 LiptonReduction]: Checked pairs total: 132482 [2023-01-28 01:42:47,133 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-01-28 01:42:47,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:47,136 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5565d703, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:47,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:47,150 INFO L130 PetriNetUnfolder]: 64/250 cut-off events. [2023-01-28 01:42:47,150 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 01:42:47,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:47,150 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:47,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:47,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:47,151 INFO L85 PathProgramCache]: Analyzing trace with hash 582511041, now seen corresponding path program 1 times [2023-01-28 01:42:47,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:47,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057953095] [2023-01-28 01:42:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:47,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:47,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:47,213 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:47,213 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:47,213 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:47,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:42:47,213 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:47,214 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:47,214 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:47,214 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:42:47,240 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:42:47,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 294 transitions, 686 flow [2023-01-28 01:42:47,539 INFO L130 PetriNetUnfolder]: 531/2580 cut-off events. [2023-01-28 01:42:47,540 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:42:47,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3078 conditions, 2580 events. 531/2580 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 16936 event pairs, 201 based on Foata normal form. 0/2233 useless extension candidates. Maximal degree in co-relation 1652. Up to 448 conditions per place. [2023-01-28 01:42:47,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 294 transitions, 686 flow [2023-01-28 01:42:47,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 294 transitions, 686 flow [2023-01-28 01:42:47,592 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:47,592 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 294 transitions, 686 flow [2023-01-28 01:42:47,592 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 294 transitions, 686 flow [2023-01-28 01:42:47,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 294 transitions, 686 flow [2023-01-28 01:42:47,887 INFO L130 PetriNetUnfolder]: 531/2580 cut-off events. [2023-01-28 01:42:47,888 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:42:47,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3078 conditions, 2580 events. 531/2580 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 16936 event pairs, 201 based on Foata normal form. 0/2233 useless extension candidates. Maximal degree in co-relation 1652. Up to 448 conditions per place. [2023-01-28 01:42:47,988 INFO L119 LiptonReduction]: Number of co-enabled transitions 53312 [2023-01-28 01:42:51,012 INFO L134 LiptonReduction]: Checked pairs total: 157731 [2023-01-28 01:42:51,013 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-01-28 01:42:51,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:51,016 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5565d703, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:51,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:51,035 INFO L130 PetriNetUnfolder]: 85/330 cut-off events. [2023-01-28 01:42:51,035 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 01:42:51,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:51,035 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:51,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:51,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1494121730, now seen corresponding path program 1 times [2023-01-28 01:42:51,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:51,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898825243] [2023-01-28 01:42:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:51,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:51,054 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:51,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:51,071 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:51,071 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:51,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:42:51,071 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:51,072 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:51,072 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:51,072 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:42:51,093 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:42:51,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 324 transitions, 768 flow [2023-01-28 01:42:51,793 INFO L130 PetriNetUnfolder]: 1118/4878 cut-off events. [2023-01-28 01:42:51,794 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:42:51,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5963 conditions, 4878 events. 1118/4878 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38151 event pairs, 522 based on Foata normal form. 0/4263 useless extension candidates. Maximal degree in co-relation 3062. Up to 1024 conditions per place. [2023-01-28 01:42:51,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 324 transitions, 768 flow [2023-01-28 01:42:51,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 324 transitions, 768 flow [2023-01-28 01:42:51,933 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:51,933 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 324 transitions, 768 flow [2023-01-28 01:42:51,934 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 324 transitions, 768 flow [2023-01-28 01:42:51,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 324 transitions, 768 flow [2023-01-28 01:42:52,667 INFO L130 PetriNetUnfolder]: 1118/4878 cut-off events. [2023-01-28 01:42:52,668 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:42:52,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5963 conditions, 4878 events. 1118/4878 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38151 event pairs, 522 based on Foata normal form. 0/4263 useless extension candidates. Maximal degree in co-relation 3062. Up to 1024 conditions per place. [2023-01-28 01:42:52,849 INFO L119 LiptonReduction]: Number of co-enabled transitions 67872 [2023-01-28 01:42:56,185 INFO L134 LiptonReduction]: Checked pairs total: 229777 [2023-01-28 01:42:56,185 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-01-28 01:42:56,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:42:56,186 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5565d703, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:42:56,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:42:56,213 INFO L130 PetriNetUnfolder]: 115/437 cut-off events. [2023-01-28 01:42:56,213 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-01-28 01:42:56,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:42:56,213 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:42:56,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:42:56,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:42:56,214 INFO L85 PathProgramCache]: Analyzing trace with hash -969354740, now seen corresponding path program 1 times [2023-01-28 01:42:56,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:42:56,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970110411] [2023-01-28 01:42:56,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:42:56,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:42:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:56,228 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:42:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:42:56,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:42:56,240 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:42:56,240 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:42:56,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:42:56,241 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:42:56,241 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:42:56,241 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:42:56,241 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:42:56,258 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:42:56,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 304 places, 354 transitions, 852 flow [2023-01-28 01:42:57,752 INFO L130 PetriNetUnfolder]: 2409/9544 cut-off events. [2023-01-28 01:42:57,752 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:42:57,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11921 conditions, 9544 events. 2409/9544 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86295 event pairs, 1291 based on Foata normal form. 0/8405 useless extension candidates. Maximal degree in co-relation 5945. Up to 2304 conditions per place. [2023-01-28 01:42:57,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 304 places, 354 transitions, 852 flow [2023-01-28 01:42:57,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 304 places, 354 transitions, 852 flow [2023-01-28 01:42:57,917 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:42:57,917 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 304 places, 354 transitions, 852 flow [2023-01-28 01:42:57,917 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 304 places, 354 transitions, 852 flow [2023-01-28 01:42:57,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 304 places, 354 transitions, 852 flow [2023-01-28 01:42:59,453 INFO L130 PetriNetUnfolder]: 2409/9544 cut-off events. [2023-01-28 01:42:59,453 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:42:59,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11921 conditions, 9544 events. 2409/9544 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86295 event pairs, 1291 based on Foata normal form. 0/8405 useless extension candidates. Maximal degree in co-relation 5945. Up to 2304 conditions per place. [2023-01-28 01:43:00,015 INFO L119 LiptonReduction]: Number of co-enabled transitions 84168 [2023-01-28 01:43:03,233 INFO L134 LiptonReduction]: Checked pairs total: 284273 [2023-01-28 01:43:03,233 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-01-28 01:43:03,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:43:03,235 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5565d703, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:43:03,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:43:03,337 INFO L130 PetriNetUnfolder]: 152/572 cut-off events. [2023-01-28 01:43:03,337 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-01-28 01:43:03,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:43:03,337 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:43:03,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:43:03,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:43:03,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1600287616, now seen corresponding path program 1 times [2023-01-28 01:43:03,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:43:03,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808908513] [2023-01-28 01:43:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:43:03,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:43:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:03,361 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:43:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:03,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:43:03,380 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:43:03,380 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:43:03,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:43:03,380 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:43:03,382 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:43:03,383 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:43:03,383 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:43:03,404 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:43:03,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 384 transitions, 938 flow [2023-01-28 01:43:06,854 INFO L130 PetriNetUnfolder]: 5236/19074 cut-off events. [2023-01-28 01:43:06,854 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:43:07,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24280 conditions, 19074 events. 5236/19074 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 197678 event pairs, 3084 based on Foata normal form. 0/16899 useless extension candidates. Maximal degree in co-relation 11901. Up to 5120 conditions per place. [2023-01-28 01:43:07,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 384 transitions, 938 flow [2023-01-28 01:43:07,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 384 transitions, 938 flow [2023-01-28 01:43:07,254 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:43:07,255 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 384 transitions, 938 flow [2023-01-28 01:43:07,255 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 384 transitions, 938 flow [2023-01-28 01:43:07,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 384 transitions, 938 flow [2023-01-28 01:43:10,741 INFO L130 PetriNetUnfolder]: 5236/19074 cut-off events. [2023-01-28 01:43:10,741 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:43:10,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24280 conditions, 19074 events. 5236/19074 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 197678 event pairs, 3084 based on Foata normal form. 0/16899 useless extension candidates. Maximal degree in co-relation 11901. Up to 5120 conditions per place. [2023-01-28 01:43:11,732 INFO L119 LiptonReduction]: Number of co-enabled transitions 102200 [2023-01-28 01:43:15,225 INFO L134 LiptonReduction]: Checked pairs total: 353544 [2023-01-28 01:43:15,225 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-01-28 01:43:15,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:43:15,227 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5565d703, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:43:15,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:43:15,283 INFO L130 PetriNetUnfolder]: 226/795 cut-off events. [2023-01-28 01:43:15,283 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-01-28 01:43:15,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:43:15,284 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:43:15,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:43:15,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:43:15,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1701458796, now seen corresponding path program 1 times [2023-01-28 01:43:15,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:43:15,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850323527] [2023-01-28 01:43:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:43:15,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:43:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:15,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:43:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:15,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:43:15,327 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:43:15,328 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:43:15,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:43:15,328 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:43:15,328 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:43:15,328 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:43:15,328 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:43:15,346 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:43:15,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 414 transitions, 1026 flow [2023-01-28 01:43:23,106 INFO L130 PetriNetUnfolder]: 11391/38588 cut-off events. [2023-01-28 01:43:23,106 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:43:23,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49952 conditions, 38588 events. 11391/38588 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 444319 event pairs, 7181 based on Foata normal form. 0/34353 useless extension candidates. Maximal degree in co-relation 24258. Up to 11264 conditions per place. [2023-01-28 01:43:23,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 414 transitions, 1026 flow [2023-01-28 01:43:24,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 414 transitions, 1026 flow [2023-01-28 01:43:24,061 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:43:24,061 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 414 transitions, 1026 flow [2023-01-28 01:43:24,062 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 414 transitions, 1026 flow [2023-01-28 01:43:24,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 414 transitions, 1026 flow [2023-01-28 01:43:31,931 INFO L130 PetriNetUnfolder]: 11391/38588 cut-off events. [2023-01-28 01:43:31,931 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:43:32,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49952 conditions, 38588 events. 11391/38588 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 444319 event pairs, 7181 based on Foata normal form. 0/34353 useless extension candidates. Maximal degree in co-relation 24258. Up to 11264 conditions per place. [2023-01-28 01:43:34,036 INFO L119 LiptonReduction]: Number of co-enabled transitions 121968 [2023-01-28 01:43:37,572 INFO L134 LiptonReduction]: Checked pairs total: 380004 [2023-01-28 01:43:37,572 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-01-28 01:43:37,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:43:37,573 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5565d703, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:43:37,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:43:37,656 INFO L130 PetriNetUnfolder]: 351/1137 cut-off events. [2023-01-28 01:43:37,657 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-01-28 01:43:37,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:43:37,657 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:43:37,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:43:37,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:43:37,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1673985508, now seen corresponding path program 1 times [2023-01-28 01:43:37,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:43:37,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69831256] [2023-01-28 01:43:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:43:37,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:43:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:37,688 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:43:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:43:37,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:43:37,706 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:43:37,706 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:43:37,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:43:37,706 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:43:37,707 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:43:37,707 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:43:37,707 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:43:37,727 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:43:37,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 379 places, 444 transitions, 1116 flow [2023-01-28 01:43:54,617 INFO L130 PetriNetUnfolder]: 24714/78582 cut-off events. [2023-01-28 01:43:54,617 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:43:56,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103273 conditions, 78582 events. 24714/78582 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1411. Compared 975416 event pairs, 16398 based on Foata normal form. 0/70239 useless extension candidates. Maximal degree in co-relation 49928. Up to 24576 conditions per place. [2023-01-28 01:43:56,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 379 places, 444 transitions, 1116 flow [2023-01-28 01:43:57,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 379 places, 444 transitions, 1116 flow [2023-01-28 01:43:57,654 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:43:57,654 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 379 places, 444 transitions, 1116 flow [2023-01-28 01:43:57,654 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 379 places, 444 transitions, 1116 flow [2023-01-28 01:43:57,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 379 places, 444 transitions, 1116 flow [2023-01-28 01:44:15,182 INFO L130 PetriNetUnfolder]: 24714/78582 cut-off events. [2023-01-28 01:44:15,183 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:44:17,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103273 conditions, 78582 events. 24714/78582 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1411. Compared 975416 event pairs, 16398 based on Foata normal form. 0/70239 useless extension candidates. Maximal degree in co-relation 49928. Up to 24576 conditions per place. [2023-01-28 01:44:21,507 INFO L119 LiptonReduction]: Number of co-enabled transitions 143472 [2023-01-28 01:44:25,140 INFO L134 LiptonReduction]: Checked pairs total: 503631 [2023-01-28 01:44:25,140 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-01-28 01:44:25,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:44:25,142 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5565d703, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:44:25,142 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:44:25,284 INFO L130 PetriNetUnfolder]: 574/1691 cut-off events. [2023-01-28 01:44:25,284 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-01-28 01:44:25,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:44:25,284 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:44:25,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:44:25,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:44:25,285 INFO L85 PathProgramCache]: Analyzing trace with hash -232206149, now seen corresponding path program 1 times [2023-01-28 01:44:25,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:44:25,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776026835] [2023-01-28 01:44:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:44:25,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:44:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:25,303 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:44:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:25,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:44:25,319 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:44:25,319 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:44:25,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:44:25,319 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:44:25,320 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:44:25,320 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:44:25,320 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:44:25,341 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:44:25,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 474 transitions, 1208 flow