/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_41-trylock_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:45:08,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:45:08,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:45:08,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:45:08,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:45:08,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:45:08,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:45:08,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:45:08,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:45:08,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:45:08,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:45:08,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:45:08,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:45:08,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:45:08,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:45:08,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:45:08,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:45:08,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:45:08,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:45:08,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:45:08,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:45:08,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:45:08,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:45:08,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:45:08,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 01:45:08,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 01:45:08,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 01:45:08,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 01:45:08,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 01:45:08,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 01:45:08,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 01:45:08,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 01:45:08,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 01:45:08,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 01:45:08,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 01:45:08,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 01:45:08,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 01:45:08,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 01:45:08,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:45:08,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:45:08,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:45:08,765 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 01:45:08,785 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:45:08,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:45:08,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:45:08,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:45:08,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:45:08,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:45:08,787 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:45:08,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:45:08,787 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:45:08,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:45:08,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:45:08,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:45:08,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:45:08,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:45:08,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:45:08,789 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:45:08,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:45:08,789 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:45:08,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:45:08,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:45:08,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:45:08,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:45:08,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:45:08,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:45:08,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:45:08,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:45:08,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:45:08,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:45:08,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:45:08,790 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:45:08,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:45:08,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:45:08,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:45:08,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:45:08,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:45:08,996 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:45:08,996 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:45:08,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-01-28 01:45:09,997 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:45:10,198 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:45:10,198 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-01-28 01:45:10,208 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7357856c5/2a9248eb638b4732960eb604de82caf3/FLAG5bff76ce5 [2023-01-28 01:45:10,218 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7357856c5/2a9248eb638b4732960eb604de82caf3 [2023-01-28 01:45:10,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:45:10,220 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:45:10,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:45:10,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:45:10,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:45:10,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:45:10" (1/1) ... [2023-01-28 01:45:10,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727bc4a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10, skipping insertion in model container [2023-01-28 01:45:10,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:45:10" (1/1) ... [2023-01-28 01:45:10,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:45:10,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:45:10,448 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_41-trylock_racefree.i[30176,30189] [2023-01-28 01:45:10,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:45:10,478 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:45:10,519 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_41-trylock_racefree.i[30176,30189] [2023-01-28 01:45:10,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:45:10,551 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:45:10,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10 WrapperNode [2023-01-28 01:45:10,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:45:10,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:45:10,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:45:10,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:45:10,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10" (1/1) ... [2023-01-28 01:45:10,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10" (1/1) ... [2023-01-28 01:45:10,595 INFO L138 Inliner]: procedures = 171, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-01-28 01:45:10,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:45:10,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:45:10,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:45:10,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:45:10,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10" (1/1) ... [2023-01-28 01:45:10,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10" (1/1) ... [2023-01-28 01:45:10,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10" (1/1) ... [2023-01-28 01:45:10,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10" (1/1) ... [2023-01-28 01:45:10,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10" (1/1) ... [2023-01-28 01:45:10,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10" (1/1) ... [2023-01-28 01:45:10,620 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10" (1/1) ... [2023-01-28 01:45:10,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10" (1/1) ... [2023-01-28 01:45:10,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:45:10,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:45:10,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:45:10,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:45:10,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10" (1/1) ... [2023-01-28 01:45:10,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:45:10,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:45:10,654 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 01:45:10,661 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 01:45:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:45:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:45:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:45:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:45:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:45:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:45:10,688 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:45:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:45:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-01-28 01:45:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:45:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:45:10,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:45:10,689 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 01:45:10,796 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:45:10,797 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:45:10,957 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:45:10,962 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:45:10,962 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-01-28 01:45:10,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:45:10 BoogieIcfgContainer [2023-01-28 01:45:10,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:45:10,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:45:10,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:45:10,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:45:10,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:45:10" (1/3) ... [2023-01-28 01:45:10,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e017247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:45:10, skipping insertion in model container [2023-01-28 01:45:10,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:45:10" (2/3) ... [2023-01-28 01:45:10,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e017247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:45:10, skipping insertion in model container [2023-01-28 01:45:10,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:45:10" (3/3) ... [2023-01-28 01:45:10,969 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2023-01-28 01:45:10,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:45:10,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:45:10,980 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:45:11,015 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:45:11,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 103 transitions, 214 flow [2023-01-28 01:45:11,082 INFO L130 PetriNetUnfolder]: 21/140 cut-off events. [2023-01-28 01:45:11,082 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:45:11,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 140 events. 21/140 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 339 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 70. Up to 6 conditions per place. [2023-01-28 01:45:11,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 103 transitions, 214 flow [2023-01-28 01:45:11,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 98 transitions, 201 flow [2023-01-28 01:45:11,091 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:11,098 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 98 transitions, 201 flow [2023-01-28 01:45:11,100 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 98 transitions, 201 flow [2023-01-28 01:45:11,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 98 transitions, 201 flow [2023-01-28 01:45:11,120 INFO L130 PetriNetUnfolder]: 20/135 cut-off events. [2023-01-28 01:45:11,120 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:45:11,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 20/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 325 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 70. Up to 6 conditions per place. [2023-01-28 01:45:11,122 INFO L119 LiptonReduction]: Number of co-enabled transitions 2408 [2023-01-28 01:45:12,924 INFO L134 LiptonReduction]: Checked pairs total: 3879 [2023-01-28 01:45:12,924 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-01-28 01:45:12,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:12,938 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;@5f3e743e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:12,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:12,942 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-01-28 01:45:12,942 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:45:12,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:12,943 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:45:12,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:12,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:12,946 INFO L85 PathProgramCache]: Analyzing trace with hash -981753351, now seen corresponding path program 1 times [2023-01-28 01:45:12,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:12,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603059398] [2023-01-28 01:45:12,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:12,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:13,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:13,054 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:13,056 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:13,056 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:13,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:45:13,058 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:13,059 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:13,060 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:13,060 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:45:13,073 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:45:13,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 133 transitions, 284 flow [2023-01-28 01:45:13,123 INFO L130 PetriNetUnfolder]: 37/231 cut-off events. [2023-01-28 01:45:13,123 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:45:13,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 231 events. 37/231 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 663 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2023-01-28 01:45:13,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 133 transitions, 284 flow [2023-01-28 01:45:13,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 133 transitions, 284 flow [2023-01-28 01:45:13,134 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:13,134 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 133 transitions, 284 flow [2023-01-28 01:45:13,135 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 133 transitions, 284 flow [2023-01-28 01:45:13,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 133 transitions, 284 flow [2023-01-28 01:45:13,177 INFO L130 PetriNetUnfolder]: 37/231 cut-off events. [2023-01-28 01:45:13,177 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:45:13,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 231 events. 37/231 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 663 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2023-01-28 01:45:13,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 7000 [2023-01-28 01:45:14,816 INFO L134 LiptonReduction]: Checked pairs total: 14688 [2023-01-28 01:45:14,817 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-01-28 01:45:14,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:14,819 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;@5f3e743e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:14,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:14,823 INFO L130 PetriNetUnfolder]: 15/63 cut-off events. [2023-01-28 01:45:14,823 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:45:14,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:14,823 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:45:14,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:14,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:14,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1871727149, now seen corresponding path program 1 times [2023-01-28 01:45:14,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:14,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128113922] [2023-01-28 01:45:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:14,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:14,857 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:14,882 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:14,882 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:14,882 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:14,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:45:14,882 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:14,883 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:14,883 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:14,883 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:45:14,894 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:45:14,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 163 transitions, 356 flow [2023-01-28 01:45:14,918 INFO L130 PetriNetUnfolder]: 58/353 cut-off events. [2023-01-28 01:45:14,919 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:45:14,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 353 events. 58/353 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1126 event pairs, 1 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 239. Up to 16 conditions per place. [2023-01-28 01:45:14,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 163 transitions, 356 flow [2023-01-28 01:45:14,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 163 transitions, 356 flow [2023-01-28 01:45:14,922 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:14,922 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 163 transitions, 356 flow [2023-01-28 01:45:14,923 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 163 transitions, 356 flow [2023-01-28 01:45:14,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 163 transitions, 356 flow [2023-01-28 01:45:14,943 INFO L130 PetriNetUnfolder]: 58/353 cut-off events. [2023-01-28 01:45:14,943 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:45:14,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 353 events. 58/353 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1126 event pairs, 1 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 239. Up to 16 conditions per place. [2023-01-28 01:45:14,951 INFO L119 LiptonReduction]: Number of co-enabled transitions 13104 [2023-01-28 01:45:16,583 INFO L134 LiptonReduction]: Checked pairs total: 29489 [2023-01-28 01:45:16,583 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-01-28 01:45:16,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:16,585 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;@5f3e743e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:16,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:16,590 INFO L130 PetriNetUnfolder]: 28/104 cut-off events. [2023-01-28 01:45:16,590 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:45:16,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:16,591 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:45:16,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:16,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:16,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1520084466, now seen corresponding path program 1 times [2023-01-28 01:45:16,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:16,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368639518] [2023-01-28 01:45:16,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:16,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:16,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:16,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:16,623 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:16,624 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:16,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:45:16,624 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:16,624 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:16,624 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:16,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:45:16,638 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:45:16,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 193 transitions, 430 flow [2023-01-28 01:45:16,676 INFO L130 PetriNetUnfolder]: 91/539 cut-off events. [2023-01-28 01:45:16,676 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:45:16,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 539 events. 91/539 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1993 event pairs, 6 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 373. Up to 32 conditions per place. [2023-01-28 01:45:16,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 193 transitions, 430 flow [2023-01-28 01:45:16,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 193 transitions, 430 flow [2023-01-28 01:45:16,682 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:16,682 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 193 transitions, 430 flow [2023-01-28 01:45:16,682 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 193 transitions, 430 flow [2023-01-28 01:45:16,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 193 transitions, 430 flow [2023-01-28 01:45:16,719 INFO L130 PetriNetUnfolder]: 91/539 cut-off events. [2023-01-28 01:45:16,719 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:45:16,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 539 events. 91/539 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1993 event pairs, 6 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 373. Up to 32 conditions per place. [2023-01-28 01:45:16,732 INFO L119 LiptonReduction]: Number of co-enabled transitions 20944 [2023-01-28 01:45:18,506 INFO L134 LiptonReduction]: Checked pairs total: 51303 [2023-01-28 01:45:18,506 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-01-28 01:45:18,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:18,508 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;@5f3e743e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:18,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:18,539 INFO L130 PetriNetUnfolder]: 40/149 cut-off events. [2023-01-28 01:45:18,539 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 01:45:18,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:18,540 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:18,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:18,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:18,540 INFO L85 PathProgramCache]: Analyzing trace with hash 732234382, now seen corresponding path program 1 times [2023-01-28 01:45:18,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:18,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026807116] [2023-01-28 01:45:18,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:18,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:18,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:18,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:18,578 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:18,578 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:18,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:45:18,578 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:18,579 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:18,579 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:18,579 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:45:18,594 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:45:18,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 223 transitions, 506 flow [2023-01-28 01:45:18,670 INFO L130 PetriNetUnfolder]: 152/857 cut-off events. [2023-01-28 01:45:18,670 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:45:18,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 857 events. 152/857 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3732 event pairs, 23 based on Foata normal form. 0/715 useless extension candidates. Maximal degree in co-relation 584. Up to 80 conditions per place. [2023-01-28 01:45:18,676 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 223 transitions, 506 flow [2023-01-28 01:45:18,683 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 223 transitions, 506 flow [2023-01-28 01:45:18,683 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:18,683 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 223 transitions, 506 flow [2023-01-28 01:45:18,684 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 223 transitions, 506 flow [2023-01-28 01:45:18,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 223 transitions, 506 flow [2023-01-28 01:45:18,785 INFO L130 PetriNetUnfolder]: 152/857 cut-off events. [2023-01-28 01:45:18,785 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:45:18,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 857 events. 152/857 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3732 event pairs, 23 based on Foata normal form. 0/715 useless extension candidates. Maximal degree in co-relation 584. Up to 80 conditions per place. [2023-01-28 01:45:18,808 INFO L119 LiptonReduction]: Number of co-enabled transitions 30520 [2023-01-28 01:45:20,705 INFO L134 LiptonReduction]: Checked pairs total: 84639 [2023-01-28 01:45:20,706 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-01-28 01:45:20,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:20,707 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;@5f3e743e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:20,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:20,719 INFO L130 PetriNetUnfolder]: 54/200 cut-off events. [2023-01-28 01:45:20,719 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 01:45:20,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:20,720 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:20,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:20,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:20,720 INFO L85 PathProgramCache]: Analyzing trace with hash 225543043, now seen corresponding path program 1 times [2023-01-28 01:45:20,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:20,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213469353] [2023-01-28 01:45:20,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:20,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:20,736 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:20,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:20,749 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:20,749 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:20,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:45:20,749 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:20,750 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:20,750 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:20,750 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:45:20,767 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:45:20,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 253 transitions, 584 flow [2023-01-28 01:45:20,907 INFO L130 PetriNetUnfolder]: 277/1447 cut-off events. [2023-01-28 01:45:20,907 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:45:20,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 1447 events. 277/1447 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7800 event pairs, 72 based on Foata normal form. 0/1227 useless extension candidates. Maximal degree in co-relation 956. Up to 192 conditions per place. [2023-01-28 01:45:20,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 253 transitions, 584 flow [2023-01-28 01:45:20,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 253 transitions, 584 flow [2023-01-28 01:45:20,930 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:20,930 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 253 transitions, 584 flow [2023-01-28 01:45:20,930 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 253 transitions, 584 flow [2023-01-28 01:45:20,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 253 transitions, 584 flow [2023-01-28 01:45:21,065 INFO L130 PetriNetUnfolder]: 277/1447 cut-off events. [2023-01-28 01:45:21,065 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:45:21,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 1447 events. 277/1447 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7800 event pairs, 72 based on Foata normal form. 0/1227 useless extension candidates. Maximal degree in co-relation 956. Up to 192 conditions per place. [2023-01-28 01:45:21,144 INFO L119 LiptonReduction]: Number of co-enabled transitions 41832 [2023-01-28 01:45:23,086 INFO L134 LiptonReduction]: Checked pairs total: 120240 [2023-01-28 01:45:23,086 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-01-28 01:45:23,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:23,090 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;@5f3e743e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:23,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:23,104 INFO L130 PetriNetUnfolder]: 65/248 cut-off events. [2023-01-28 01:45:23,104 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-01-28 01:45:23,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:23,104 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:23,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:23,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:23,105 INFO L85 PathProgramCache]: Analyzing trace with hash -240060719, now seen corresponding path program 1 times [2023-01-28 01:45:23,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:23,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561657203] [2023-01-28 01:45:23,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:23,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:23,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:23,164 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:23,164 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:23,165 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:23,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:45:23,165 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:23,169 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:23,169 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:23,169 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:45:23,202 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:45:23,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 283 transitions, 664 flow [2023-01-28 01:45:23,538 INFO L130 PetriNetUnfolder]: 546/2597 cut-off events. [2023-01-28 01:45:23,538 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:45:23,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3095 conditions, 2597 events. 546/2597 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16944 event pairs, 201 based on Foata normal form. 0/2235 useless extension candidates. Maximal degree in co-relation 1665. Up to 448 conditions per place. [2023-01-28 01:45:23,567 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 283 transitions, 664 flow [2023-01-28 01:45:23,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 283 transitions, 664 flow [2023-01-28 01:45:23,589 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:23,589 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 283 transitions, 664 flow [2023-01-28 01:45:23,589 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 283 transitions, 664 flow [2023-01-28 01:45:23,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 283 transitions, 664 flow [2023-01-28 01:45:23,873 INFO L130 PetriNetUnfolder]: 546/2597 cut-off events. [2023-01-28 01:45:23,874 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:45:23,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3095 conditions, 2597 events. 546/2597 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16944 event pairs, 201 based on Foata normal form. 0/2235 useless extension candidates. Maximal degree in co-relation 1665. Up to 448 conditions per place. [2023-01-28 01:45:23,966 INFO L119 LiptonReduction]: Number of co-enabled transitions 54880 [2023-01-28 01:45:25,934 INFO L134 LiptonReduction]: Checked pairs total: 158761 [2023-01-28 01:45:25,934 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-01-28 01:45:25,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:25,935 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;@5f3e743e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:25,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:25,955 INFO L130 PetriNetUnfolder]: 82/319 cut-off events. [2023-01-28 01:45:25,955 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2023-01-28 01:45:25,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:25,956 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:25,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:25,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:25,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1624175329, now seen corresponding path program 1 times [2023-01-28 01:45:25,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:25,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256019056] [2023-01-28 01:45:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:25,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:25,990 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:26,008 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:26,009 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:26,009 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:26,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:45:26,010 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:26,010 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:26,010 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:26,010 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:45:26,032 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:45:26,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 313 transitions, 746 flow [2023-01-28 01:45:26,660 INFO L130 PetriNetUnfolder]: 1135/4899 cut-off events. [2023-01-28 01:45:26,660 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:45:26,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5984 conditions, 4899 events. 1135/4899 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 37958 event pairs, 522 based on Foata normal form. 0/4267 useless extension candidates. Maximal degree in co-relation 3079. Up to 1024 conditions per place. [2023-01-28 01:45:26,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 313 transitions, 746 flow [2023-01-28 01:45:26,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 313 transitions, 746 flow [2023-01-28 01:45:26,748 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:26,748 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 313 transitions, 746 flow [2023-01-28 01:45:26,748 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 313 transitions, 746 flow [2023-01-28 01:45:26,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 313 transitions, 746 flow [2023-01-28 01:45:27,340 INFO L130 PetriNetUnfolder]: 1135/4899 cut-off events. [2023-01-28 01:45:27,340 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:45:27,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5984 conditions, 4899 events. 1135/4899 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 37958 event pairs, 522 based on Foata normal form. 0/4267 useless extension candidates. Maximal degree in co-relation 3079. Up to 1024 conditions per place. [2023-01-28 01:45:27,664 INFO L119 LiptonReduction]: Number of co-enabled transitions 69664 [2023-01-28 01:45:29,770 INFO L134 LiptonReduction]: Checked pairs total: 208968 [2023-01-28 01:45:29,770 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-01-28 01:45:29,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:29,773 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;@5f3e743e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:29,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:29,807 INFO L130 PetriNetUnfolder]: 110/417 cut-off events. [2023-01-28 01:45:29,808 INFO L131 PetriNetUnfolder]: For 182/182 co-relation queries the response was YES. [2023-01-28 01:45:29,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:29,808 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:29,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:29,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:29,808 INFO L85 PathProgramCache]: Analyzing trace with hash 117412337, now seen corresponding path program 1 times [2023-01-28 01:45:29,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:29,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497995064] [2023-01-28 01:45:29,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:29,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:29,840 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:29,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:29,855 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:29,855 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:29,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:45:29,855 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:29,857 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:29,857 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:29,857 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:45:29,881 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:45:29,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 343 transitions, 830 flow [2023-01-28 01:45:31,412 INFO L130 PetriNetUnfolder]: 2428/9569 cut-off events. [2023-01-28 01:45:31,413 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:45:31,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11946 conditions, 9569 events. 2428/9569 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 87401 event pairs, 1291 based on Foata normal form. 0/8411 useless extension candidates. Maximal degree in co-relation 5966. Up to 2304 conditions per place. [2023-01-28 01:45:31,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 343 transitions, 830 flow [2023-01-28 01:45:31,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 343 transitions, 830 flow [2023-01-28 01:45:31,587 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:31,587 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 343 transitions, 830 flow [2023-01-28 01:45:31,587 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 343 transitions, 830 flow [2023-01-28 01:45:31,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 343 transitions, 830 flow [2023-01-28 01:45:33,034 INFO L130 PetriNetUnfolder]: 2428/9569 cut-off events. [2023-01-28 01:45:33,034 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:45:33,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11946 conditions, 9569 events. 2428/9569 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 87401 event pairs, 1291 based on Foata normal form. 0/8411 useless extension candidates. Maximal degree in co-relation 5966. Up to 2304 conditions per place. [2023-01-28 01:45:33,512 INFO L119 LiptonReduction]: Number of co-enabled transitions 86184 [2023-01-28 01:45:35,749 INFO L134 LiptonReduction]: Checked pairs total: 257419 [2023-01-28 01:45:35,749 INFO L136 LiptonReduction]: Total number of compositions: 196 [2023-01-28 01:45:35,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:35,752 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;@5f3e743e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:35,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:35,798 INFO L130 PetriNetUnfolder]: 153/561 cut-off events. [2023-01-28 01:45:35,799 INFO L131 PetriNetUnfolder]: For 285/285 co-relation queries the response was YES. [2023-01-28 01:45:35,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:35,799 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:35,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:35,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:35,799 INFO L85 PathProgramCache]: Analyzing trace with hash 389941388, now seen corresponding path program 1 times [2023-01-28 01:45:35,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:35,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777237977] [2023-01-28 01:45:35,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:35,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:35,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:35,845 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:35,846 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:35,846 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:35,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:45:35,846 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:35,848 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:35,848 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:35,848 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:45:35,877 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:45:35,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 373 transitions, 916 flow [2023-01-28 01:45:39,726 INFO L130 PetriNetUnfolder]: 5257/19103 cut-off events. [2023-01-28 01:45:39,727 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:45:39,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24309 conditions, 19103 events. 5257/19103 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 194767 event pairs, 3084 based on Foata normal form. 0/16907 useless extension candidates. Maximal degree in co-relation 11926. Up to 5120 conditions per place. [2023-01-28 01:45:39,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 373 transitions, 916 flow [2023-01-28 01:45:40,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 373 transitions, 916 flow [2023-01-28 01:45:40,158 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:40,158 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 317 places, 373 transitions, 916 flow [2023-01-28 01:45:40,158 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 317 places, 373 transitions, 916 flow [2023-01-28 01:45:40,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 373 transitions, 916 flow [2023-01-28 01:45:43,552 INFO L130 PetriNetUnfolder]: 5257/19103 cut-off events. [2023-01-28 01:45:43,553 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:45:43,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24309 conditions, 19103 events. 5257/19103 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 194767 event pairs, 3084 based on Foata normal form. 0/16907 useless extension candidates. Maximal degree in co-relation 11926. Up to 5120 conditions per place. [2023-01-28 01:45:44,525 INFO L119 LiptonReduction]: Number of co-enabled transitions 104440 [2023-01-28 01:45:46,980 INFO L134 LiptonReduction]: Checked pairs total: 318219 [2023-01-28 01:45:46,980 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-01-28 01:45:46,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:46,985 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;@5f3e743e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:46,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:47,042 INFO L130 PetriNetUnfolder]: 227/777 cut-off events. [2023-01-28 01:45:47,042 INFO L131 PetriNetUnfolder]: For 446/446 co-relation queries the response was YES. [2023-01-28 01:45:47,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:47,042 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:47,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:47,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:47,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1114350296, now seen corresponding path program 1 times [2023-01-28 01:45:47,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:47,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329365752] [2023-01-28 01:45:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:47,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:47,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:47,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:47,070 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:47,070 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:47,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:45:47,070 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:47,070 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:47,070 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:47,070 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:45:47,087 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:45:47,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 403 transitions, 1004 flow [2023-01-28 01:45:54,645 INFO L130 PetriNetUnfolder]: 11414/38621 cut-off events. [2023-01-28 01:45:54,645 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:45:55,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49985 conditions, 38621 events. 11414/38621 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 440326 event pairs, 7181 based on Foata normal form. 0/34363 useless extension candidates. Maximal degree in co-relation 24288. Up to 11264 conditions per place. [2023-01-28 01:45:55,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 342 places, 403 transitions, 1004 flow [2023-01-28 01:45:55,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 403 transitions, 1004 flow [2023-01-28 01:45:55,778 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:55,778 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 403 transitions, 1004 flow [2023-01-28 01:45:55,778 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 403 transitions, 1004 flow [2023-01-28 01:45:55,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 403 transitions, 1004 flow [2023-01-28 01:46:03,350 INFO L130 PetriNetUnfolder]: 11414/38621 cut-off events. [2023-01-28 01:46:03,351 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:46:03,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49985 conditions, 38621 events. 11414/38621 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 440326 event pairs, 7181 based on Foata normal form. 0/34363 useless extension candidates. Maximal degree in co-relation 24288. Up to 11264 conditions per place. [2023-01-28 01:46:05,405 INFO L119 LiptonReduction]: Number of co-enabled transitions 124432 [2023-01-28 01:46:07,799 INFO L134 LiptonReduction]: Checked pairs total: 372873 [2023-01-28 01:46:07,800 INFO L136 LiptonReduction]: Total number of compositions: 226 [2023-01-28 01:46:07,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:46:07,801 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;@5f3e743e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:46:07,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:46:07,914 INFO L130 PetriNetUnfolder]: 328/1056 cut-off events. [2023-01-28 01:46:07,914 INFO L131 PetriNetUnfolder]: For 653/653 co-relation queries the response was YES. [2023-01-28 01:46:07,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:46:07,914 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:46:07,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:46:07,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:46:07,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1721307958, now seen corresponding path program 1 times [2023-01-28 01:46:07,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:46:07,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445562508] [2023-01-28 01:46:07,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:46:07,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:46:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:07,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:46:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:07,955 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:46:07,955 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:46:07,955 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:46:07,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:46:07,955 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:46:07,956 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:46:07,956 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:46:07,956 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:46:07,978 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:46:07,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 433 transitions, 1094 flow [2023-01-28 01:46:24,943 INFO L130 PetriNetUnfolder]: 24739/78619 cut-off events. [2023-01-28 01:46:24,943 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:46:26,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103310 conditions, 78619 events. 24739/78619 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 976796 event pairs, 16398 based on Foata normal form. 0/70251 useless extension candidates. Maximal degree in co-relation 49964. Up to 24576 conditions per place. [2023-01-28 01:46:26,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 433 transitions, 1094 flow [2023-01-28 01:46:27,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 433 transitions, 1094 flow [2023-01-28 01:46:27,793 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:46:27,793 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 367 places, 433 transitions, 1094 flow [2023-01-28 01:46:27,793 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 367 places, 433 transitions, 1094 flow [2023-01-28 01:46:27,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 433 transitions, 1094 flow [2023-01-28 01:46:44,687 INFO L130 PetriNetUnfolder]: 24739/78619 cut-off events. [2023-01-28 01:46:44,687 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:46:47,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103310 conditions, 78619 events. 24739/78619 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 976796 event pairs, 16398 based on Foata normal form. 0/70251 useless extension candidates. Maximal degree in co-relation 49964. Up to 24576 conditions per place. [2023-01-28 01:46:51,328 INFO L119 LiptonReduction]: Number of co-enabled transitions 146160 [2023-01-28 01:46:53,858 INFO L134 LiptonReduction]: Checked pairs total: 454115 [2023-01-28 01:46:53,858 INFO L136 LiptonReduction]: Total number of compositions: 242 [2023-01-28 01:46:53,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:46:53,860 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;@5f3e743e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:46:53,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:46:53,983 INFO L130 PetriNetUnfolder]: 501/1512 cut-off events. [2023-01-28 01:46:53,983 INFO L131 PetriNetUnfolder]: For 995/995 co-relation queries the response was YES. [2023-01-28 01:46:53,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:46:53,983 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 01:46:53,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:46:53,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:46:53,984 INFO L85 PathProgramCache]: Analyzing trace with hash 989857211, now seen corresponding path program 1 times [2023-01-28 01:46:53,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:46:53,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18238051] [2023-01-28 01:46:53,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:46:53,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:46:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:53,998 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:46:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:54,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:46:54,013 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:46:54,013 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:46:54,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:46:54,013 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:46:54,013 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:46:54,013 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:46:54,013 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:46:54,033 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:46:54,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 463 transitions, 1186 flow [2023-01-28 01:47:30,258 INFO L130 PetriNetUnfolder]: 53424/160601 cut-off events. [2023-01-28 01:47:30,258 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:47:35,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213980 conditions, 160601 events. 53424/160601 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2778. Compared 2165384 event pairs, 36879 based on Foata normal form. 0/144027 useless extension candidates. Maximal degree in co-relation 103289. Up to 53248 conditions per place. [2023-01-28 01:47:35,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 392 places, 463 transitions, 1186 flow [2023-01-28 01:47:39,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 392 places, 463 transitions, 1186 flow [2023-01-28 01:47:39,374 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:47:39,374 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 392 places, 463 transitions, 1186 flow [2023-01-28 01:47:39,374 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 392 places, 463 transitions, 1186 flow [2023-01-28 01:47:39,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 463 transitions, 1186 flow [2023-01-28 01:48:15,956 INFO L130 PetriNetUnfolder]: 53424/160601 cut-off events. [2023-01-28 01:48:15,956 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:48:21,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213980 conditions, 160601 events. 53424/160601 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2778. Compared 2165384 event pairs, 36879 based on Foata normal form. 0/144027 useless extension candidates. Maximal degree in co-relation 103289. Up to 53248 conditions per place. [2023-01-28 01:48:35,036 INFO L119 LiptonReduction]: Number of co-enabled transitions 169624 [2023-01-28 01:48:37,677 INFO L134 LiptonReduction]: Checked pairs total: 527681 [2023-01-28 01:48:37,678 INFO L136 LiptonReduction]: Total number of compositions: 257 [2023-01-28 01:48:37,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:48:37,679 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;@5f3e743e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:48:37,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:48:37,884 INFO L130 PetriNetUnfolder]: 830/2280 cut-off events. [2023-01-28 01:48:37,884 INFO L131 PetriNetUnfolder]: For 1542/1542 co-relation queries the response was YES. [2023-01-28 01:48:37,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:48:37,884 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:48:37,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:48:37,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:48:37,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2076018442, now seen corresponding path program 1 times [2023-01-28 01:48:37,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:48:37,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666511806] [2023-01-28 01:48:37,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:48:37,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:48:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:37,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:48:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:48:37,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:48:37,931 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:48:37,932 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:48:37,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:48:37,932 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:48:37,932 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:48:37,932 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:48:37,932 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:48:37,955 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:48:37,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 417 places, 493 transitions, 1280 flow