./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 20:47:01,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:47:01,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:47:01,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:47:01,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:47:01,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:47:01,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:47:01,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:47:01,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:47:01,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:47:01,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:47:01,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:47:01,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:47:01,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:47:01,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:47:01,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:47:01,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:47:01,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:47:01,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:47:01,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:47:01,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:47:01,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:47:01,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:47:01,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:47:01,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:47:01,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:47:01,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:47:01,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:47:01,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:47:01,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:47:01,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:47:01,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:47:01,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:47:01,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:47:01,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:47:01,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:47:01,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:47:01,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:47:01,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:47:01,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:47:01,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:47:01,931 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:47:01,957 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:47:01,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:47:01,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:47:01,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:47:01,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:47:01,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:47:01,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:47:01,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:47:01,960 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:47:01,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:47:01,961 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:47:01,961 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:47:01,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:47:01,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:47:01,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:47:01,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:47:01,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:47:01,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:47:01,962 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:47:01,962 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:47:01,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:47:01,962 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:47:01,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:47:01,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:47:01,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:47:01,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:47:01,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:47:01,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:47:01,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:47:01,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:47:01,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:47:01,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:47:01,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:47:01,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:47:01,964 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:47:01,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:47:01,964 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:47:01,965 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:47:02,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:47:02,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:47:02,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:47:02,238 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:47:02,239 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:47:02,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-08-31 20:47:03,241 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:47:03,493 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:47:03,495 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-08-31 20:47:03,517 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/567f78938/b985ba0409764881b64200cbb7e114f1/FLAG3abd1ed0f [2023-08-31 20:47:03,535 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/567f78938/b985ba0409764881b64200cbb7e114f1 [2023-08-31 20:47:03,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:47:03,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:47:03,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:47:03,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:47:03,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:47:03,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:47:03" (1/1) ... [2023-08-31 20:47:03,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d61008d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03, skipping insertion in model container [2023-08-31 20:47:03,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:47:03" (1/1) ... [2023-08-31 20:47:03,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:47:03,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:47:03,855 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_19-callback_racing.i[30212,30225] [2023-08-31 20:47:03,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:47:03,893 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:47:03,928 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_19-callback_racing.i[30212,30225] [2023-08-31 20:47:03,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:47:03,972 WARN L667 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 20:47:03,977 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:47:03,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03 WrapperNode [2023-08-31 20:47:03,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:47:03,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:47:03,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:47:03,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:47:03,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03" (1/1) ... [2023-08-31 20:47:04,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03" (1/1) ... [2023-08-31 20:47:04,034 INFO L138 Inliner]: procedures = 173, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 153 [2023-08-31 20:47:04,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:47:04,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:47:04,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:47:04,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:47:04,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03" (1/1) ... [2023-08-31 20:47:04,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03" (1/1) ... [2023-08-31 20:47:04,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03" (1/1) ... [2023-08-31 20:47:04,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03" (1/1) ... [2023-08-31 20:47:04,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03" (1/1) ... [2023-08-31 20:47:04,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03" (1/1) ... [2023-08-31 20:47:04,080 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03" (1/1) ... [2023-08-31 20:47:04,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03" (1/1) ... [2023-08-31 20:47:04,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:47:04,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:47:04,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:47:04,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:47:04,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03" (1/1) ... [2023-08-31 20:47:04,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:47:04,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:47:04,140 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) [2023-08-31 20:47:04,149 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 [2023-08-31 20:47:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:47:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:47:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:47:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:47:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:47:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:47:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:47:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:47:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:47:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:47:04,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:47:04,169 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 20:47:04,286 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:47:04,287 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:47:04,500 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:47:04,506 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:47:04,506 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-31 20:47:04,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:47:04 BoogieIcfgContainer [2023-08-31 20:47:04,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:47:04,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:47:04,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:47:04,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:47:04,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:47:03" (1/3) ... [2023-08-31 20:47:04,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcd33de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:47:04, skipping insertion in model container [2023-08-31 20:47:04,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:47:03" (2/3) ... [2023-08-31 20:47:04,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcd33de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:47:04, skipping insertion in model container [2023-08-31 20:47:04,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:47:04" (3/3) ... [2023-08-31 20:47:04,514 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2023-08-31 20:47:04,520 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:47:04,534 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:47:04,535 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-31 20:47:04,535 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:47:04,595 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:47:04,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 159 transitions, 326 flow [2023-08-31 20:47:04,716 INFO L130 PetriNetUnfolder]: 26/251 cut-off events. [2023-08-31 20:47:04,718 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:47:04,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 251 events. 26/251 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 761 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 125. Up to 6 conditions per place. [2023-08-31 20:47:04,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 159 transitions, 326 flow [2023-08-31 20:47:04,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 154 transitions, 313 flow [2023-08-31 20:47:04,732 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:04,742 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 154 transitions, 313 flow [2023-08-31 20:47:04,745 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 154 transitions, 313 flow [2023-08-31 20:47:04,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 154 transitions, 313 flow [2023-08-31 20:47:04,792 INFO L130 PetriNetUnfolder]: 25/246 cut-off events. [2023-08-31 20:47:04,792 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:47:04,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 246 events. 25/246 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 720 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 125. Up to 6 conditions per place. [2023-08-31 20:47:04,797 INFO L119 LiptonReduction]: Number of co-enabled transitions 4312 [2023-08-31 20:47:07,402 INFO L134 LiptonReduction]: Checked pairs total: 9079 [2023-08-31 20:47:07,402 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-31 20:47:07,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:07,414 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=true, 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;@46e0363d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:07,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:47:07,420 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-31 20:47:07,421 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:47:07,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:07,422 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:47:07,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:07,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:07,427 INFO L85 PathProgramCache]: Analyzing trace with hash -515222896, now seen corresponding path program 1 times [2023-08-31 20:47:07,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:07,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491595327] [2023-08-31 20:47:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:07,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:07,539 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:07,571 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:07,572 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:07,573 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:47:07,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:47:07,575 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:07,576 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:47:07,577 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:07,577 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:47:07,589 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:47:07,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 183 transitions, 384 flow [2023-08-31 20:47:07,629 INFO L130 PetriNetUnfolder]: 43/397 cut-off events. [2023-08-31 20:47:07,629 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:47:07,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 397 events. 43/397 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1546 event pairs, 0 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 253. Up to 9 conditions per place. [2023-08-31 20:47:07,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 183 transitions, 384 flow [2023-08-31 20:47:07,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 183 transitions, 384 flow [2023-08-31 20:47:07,633 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:07,633 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 183 transitions, 384 flow [2023-08-31 20:47:07,634 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 183 transitions, 384 flow [2023-08-31 20:47:07,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 183 transitions, 384 flow [2023-08-31 20:47:07,657 INFO L130 PetriNetUnfolder]: 43/397 cut-off events. [2023-08-31 20:47:07,657 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:47:07,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 397 events. 43/397 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1546 event pairs, 0 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 253. Up to 9 conditions per place. [2023-08-31 20:47:07,663 INFO L119 LiptonReduction]: Number of co-enabled transitions 10076 [2023-08-31 20:47:10,590 INFO L134 LiptonReduction]: Checked pairs total: 27045 [2023-08-31 20:47:10,590 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-31 20:47:10,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:10,596 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=true, 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;@46e0363d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:10,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:47:10,601 INFO L130 PetriNetUnfolder]: 17/84 cut-off events. [2023-08-31 20:47:10,601 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 20:47:10,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:10,601 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:47:10,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:10,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:10,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1355747893, now seen corresponding path program 1 times [2023-08-31 20:47:10,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:10,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828621719] [2023-08-31 20:47:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:10,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:10,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:10,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:10,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:10,691 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:47:10,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:47:10,692 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:10,692 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:47:10,692 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:10,692 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:47:10,711 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:47:10,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 207 transitions, 444 flow [2023-08-31 20:47:10,770 INFO L130 PetriNetUnfolder]: 65/586 cut-off events. [2023-08-31 20:47:10,770 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:47:10,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 586 events. 65/586 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2585 event pairs, 1 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 405. Up to 16 conditions per place. [2023-08-31 20:47:10,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 207 transitions, 444 flow [2023-08-31 20:47:10,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 207 transitions, 444 flow [2023-08-31 20:47:10,779 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:10,779 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 207 transitions, 444 flow [2023-08-31 20:47:10,780 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 207 transitions, 444 flow [2023-08-31 20:47:10,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 207 transitions, 444 flow [2023-08-31 20:47:10,817 INFO L130 PetriNetUnfolder]: 65/586 cut-off events. [2023-08-31 20:47:10,818 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:47:10,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 586 events. 65/586 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2585 event pairs, 1 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 405. Up to 16 conditions per place. [2023-08-31 20:47:10,831 INFO L119 LiptonReduction]: Number of co-enabled transitions 16764 [2023-08-31 20:47:13,586 INFO L134 LiptonReduction]: Checked pairs total: 44228 [2023-08-31 20:47:13,586 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-08-31 20:47:13,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:13,588 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=true, 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;@46e0363d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:13,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:47:13,593 INFO L130 PetriNetUnfolder]: 25/125 cut-off events. [2023-08-31 20:47:13,594 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 20:47:13,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:13,594 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:47:13,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:13,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:13,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1665138144, now seen corresponding path program 1 times [2023-08-31 20:47:13,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:13,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973793746] [2023-08-31 20:47:13,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:13,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:13,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:13,636 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:13,636 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:13,636 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:47:13,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:47:13,637 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:13,637 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:47:13,637 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:13,637 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:47:13,653 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:47:13,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 231 transitions, 506 flow [2023-08-31 20:47:13,723 INFO L130 PetriNetUnfolder]: 99/863 cut-off events. [2023-08-31 20:47:13,724 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:47:13,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 863 events. 99/863 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4153 event pairs, 6 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 606. Up to 32 conditions per place. [2023-08-31 20:47:13,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 231 transitions, 506 flow [2023-08-31 20:47:13,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 231 transitions, 506 flow [2023-08-31 20:47:13,732 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:13,732 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 231 transitions, 506 flow [2023-08-31 20:47:13,732 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 231 transitions, 506 flow [2023-08-31 20:47:13,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 231 transitions, 506 flow [2023-08-31 20:47:13,792 INFO L130 PetriNetUnfolder]: 99/863 cut-off events. [2023-08-31 20:47:13,792 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:47:13,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 863 events. 99/863 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4153 event pairs, 6 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 606. Up to 32 conditions per place. [2023-08-31 20:47:13,811 INFO L119 LiptonReduction]: Number of co-enabled transitions 24552 [2023-08-31 20:47:16,652 INFO L134 LiptonReduction]: Checked pairs total: 58889 [2023-08-31 20:47:16,652 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-31 20:47:16,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:16,656 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=true, 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;@46e0363d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:16,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:47:16,665 INFO L130 PetriNetUnfolder]: 38/185 cut-off events. [2023-08-31 20:47:16,665 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-31 20:47:16,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:16,665 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:47:16,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:16,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:16,667 INFO L85 PathProgramCache]: Analyzing trace with hash 441775528, now seen corresponding path program 1 times [2023-08-31 20:47:16,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:16,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766444667] [2023-08-31 20:47:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:16,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:16,701 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:16,737 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:16,739 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:16,739 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:47:16,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:47:16,739 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:16,739 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:47:16,740 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:16,740 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:47:16,755 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:47:16,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 255 transitions, 570 flow [2023-08-31 20:47:16,885 INFO L130 PetriNetUnfolder]: 161/1320 cut-off events. [2023-08-31 20:47:16,885 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:47:16,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 1320 events. 161/1320 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 7056 event pairs, 23 based on Foata normal form. 0/1114 useless extension candidates. Maximal degree in co-relation 908. Up to 80 conditions per place. [2023-08-31 20:47:16,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 255 transitions, 570 flow [2023-08-31 20:47:16,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 255 transitions, 570 flow [2023-08-31 20:47:16,902 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:16,902 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 255 transitions, 570 flow [2023-08-31 20:47:16,902 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 255 transitions, 570 flow [2023-08-31 20:47:16,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 255 transitions, 570 flow [2023-08-31 20:47:17,006 INFO L130 PetriNetUnfolder]: 161/1320 cut-off events. [2023-08-31 20:47:17,006 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:47:17,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 1320 events. 161/1320 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 7056 event pairs, 23 based on Foata normal form. 0/1114 useless extension candidates. Maximal degree in co-relation 908. Up to 80 conditions per place. [2023-08-31 20:47:17,029 INFO L119 LiptonReduction]: Number of co-enabled transitions 33440 [2023-08-31 20:47:19,459 INFO L134 LiptonReduction]: Checked pairs total: 86978 [2023-08-31 20:47:19,459 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-08-31 20:47:19,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:19,462 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=true, 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;@46e0363d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:19,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:47:19,490 INFO L130 PetriNetUnfolder]: 55/261 cut-off events. [2023-08-31 20:47:19,490 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-31 20:47:19,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:19,491 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:47:19,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:19,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:19,491 INFO L85 PathProgramCache]: Analyzing trace with hash -492536294, now seen corresponding path program 1 times [2023-08-31 20:47:19,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:19,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244470667] [2023-08-31 20:47:19,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:19,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:19,550 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:19,578 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:19,580 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:19,581 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:47:19,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:47:19,584 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:19,585 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:47:19,585 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:19,585 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:47:19,609 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:47:19,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 279 transitions, 636 flow [2023-08-31 20:47:19,827 INFO L130 PetriNetUnfolder]: 287/2145 cut-off events. [2023-08-31 20:47:19,828 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:47:19,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2377 conditions, 2145 events. 287/2145 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 13559 event pairs, 72 based on Foata normal form. 0/1824 useless extension candidates. Maximal degree in co-relation 1419. Up to 192 conditions per place. [2023-08-31 20:47:19,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 279 transitions, 636 flow [2023-08-31 20:47:19,851 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 279 transitions, 636 flow [2023-08-31 20:47:19,853 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:19,854 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 279 transitions, 636 flow [2023-08-31 20:47:19,854 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 279 transitions, 636 flow [2023-08-31 20:47:19,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 279 transitions, 636 flow [2023-08-31 20:47:20,076 INFO L130 PetriNetUnfolder]: 287/2145 cut-off events. [2023-08-31 20:47:20,076 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:47:20,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2377 conditions, 2145 events. 287/2145 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 13559 event pairs, 72 based on Foata normal form. 0/1824 useless extension candidates. Maximal degree in co-relation 1419. Up to 192 conditions per place. [2023-08-31 20:47:20,127 INFO L119 LiptonReduction]: Number of co-enabled transitions 43428 [2023-08-31 20:47:22,567 INFO L134 LiptonReduction]: Checked pairs total: 115883 [2023-08-31 20:47:22,567 INFO L136 LiptonReduction]: Total number of compositions: 203 [2023-08-31 20:47:22,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:22,571 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=true, 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;@46e0363d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:22,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:47:22,590 INFO L130 PetriNetUnfolder]: 74/343 cut-off events. [2023-08-31 20:47:22,590 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-08-31 20:47:22,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:22,590 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:47:22,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:22,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:22,591 INFO L85 PathProgramCache]: Analyzing trace with hash 96374022, now seen corresponding path program 1 times [2023-08-31 20:47:22,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:22,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917635817] [2023-08-31 20:47:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:22,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:22,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:22,657 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:22,658 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:22,658 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:47:22,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:47:22,658 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:22,661 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:47:22,661 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:22,661 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:47:22,682 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:47:22,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 303 transitions, 704 flow [2023-08-31 20:47:23,161 INFO L130 PetriNetUnfolder]: 557/3722 cut-off events. [2023-08-31 20:47:23,162 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:47:23,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4220 conditions, 3722 events. 557/3722 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 27491 event pairs, 201 based on Foata normal form. 0/3190 useless extension candidates. Maximal degree in co-relation 2363. Up to 448 conditions per place. [2023-08-31 20:47:23,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 303 transitions, 704 flow [2023-08-31 20:47:23,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 303 transitions, 704 flow [2023-08-31 20:47:23,199 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:23,199 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 303 transitions, 704 flow [2023-08-31 20:47:23,199 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 303 transitions, 704 flow [2023-08-31 20:47:23,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 303 transitions, 704 flow [2023-08-31 20:47:23,669 INFO L130 PetriNetUnfolder]: 557/3722 cut-off events. [2023-08-31 20:47:23,669 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:47:23,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4220 conditions, 3722 events. 557/3722 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 27491 event pairs, 201 based on Foata normal form. 0/3190 useless extension candidates. Maximal degree in co-relation 2363. Up to 448 conditions per place. [2023-08-31 20:47:23,765 INFO L119 LiptonReduction]: Number of co-enabled transitions 54516 [2023-08-31 20:47:26,490 INFO L134 LiptonReduction]: Checked pairs total: 146686 [2023-08-31 20:47:26,490 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-08-31 20:47:26,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:26,492 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=true, 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;@46e0363d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:26,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:47:26,512 INFO L130 PetriNetUnfolder]: 92/429 cut-off events. [2023-08-31 20:47:26,512 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-31 20:47:26,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:26,512 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:47:26,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:26,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash 221194301, now seen corresponding path program 1 times [2023-08-31 20:47:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788361661] [2023-08-31 20:47:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:26,527 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:26,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:26,539 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:26,539 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:47:26,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:47:26,539 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:26,539 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:47:26,539 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:26,540 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:47:26,556 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:47:26,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 301 places, 327 transitions, 774 flow [2023-08-31 20:47:27,539 INFO L130 PetriNetUnfolder]: 1147/6835 cut-off events. [2023-08-31 20:47:27,540 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:47:27,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7920 conditions, 6835 events. 1147/6835 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 59380 event pairs, 522 based on Foata normal form. 0/5900 useless extension candidates. Maximal degree in co-relation 4204. Up to 1024 conditions per place. [2023-08-31 20:47:27,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 301 places, 327 transitions, 774 flow [2023-08-31 20:47:27,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 301 places, 327 transitions, 774 flow [2023-08-31 20:47:27,622 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:27,622 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 301 places, 327 transitions, 774 flow [2023-08-31 20:47:27,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 301 places, 327 transitions, 774 flow [2023-08-31 20:47:27,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 301 places, 327 transitions, 774 flow [2023-08-31 20:47:28,496 INFO L130 PetriNetUnfolder]: 1147/6835 cut-off events. [2023-08-31 20:47:28,497 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:47:28,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7920 conditions, 6835 events. 1147/6835 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 59380 event pairs, 522 based on Foata normal form. 0/5900 useless extension candidates. Maximal degree in co-relation 4204. Up to 1024 conditions per place. [2023-08-31 20:47:28,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 66704 [2023-08-31 20:47:31,793 INFO L134 LiptonReduction]: Checked pairs total: 181573 [2023-08-31 20:47:31,793 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-08-31 20:47:31,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:31,797 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=true, 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;@46e0363d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:31,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:47:31,835 INFO L130 PetriNetUnfolder]: 124/561 cut-off events. [2023-08-31 20:47:31,835 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-08-31 20:47:31,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:31,835 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:47:31,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:31,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash 579754508, now seen corresponding path program 1 times [2023-08-31 20:47:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:31,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121607301] [2023-08-31 20:47:31,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:31,861 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:31,941 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:31,941 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:31,941 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:47:31,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:47:31,941 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:31,941 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:47:31,941 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:31,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:47:31,970 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:47:31,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 351 transitions, 846 flow [2023-08-31 20:47:34,207 INFO L130 PetriNetUnfolder]: 2441/13084 cut-off events. [2023-08-31 20:47:34,207 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:47:34,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15461 conditions, 13084 events. 2441/13084 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 130515 event pairs, 1291 based on Foata normal form. 0/11362 useless extension candidates. Maximal degree in co-relation 7902. Up to 2304 conditions per place. [2023-08-31 20:47:34,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 323 places, 351 transitions, 846 flow [2023-08-31 20:47:34,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 323 places, 351 transitions, 846 flow [2023-08-31 20:47:34,493 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:34,493 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 323 places, 351 transitions, 846 flow [2023-08-31 20:47:34,493 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 323 places, 351 transitions, 846 flow [2023-08-31 20:47:34,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 351 transitions, 846 flow [2023-08-31 20:47:36,484 INFO L130 PetriNetUnfolder]: 2441/13084 cut-off events. [2023-08-31 20:47:36,484 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:47:36,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15461 conditions, 13084 events. 2441/13084 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 130515 event pairs, 1291 based on Foata normal form. 0/11362 useless extension candidates. Maximal degree in co-relation 7902. Up to 2304 conditions per place. [2023-08-31 20:47:36,938 INFO L119 LiptonReduction]: Number of co-enabled transitions 79992 [2023-08-31 20:47:39,718 INFO L134 LiptonReduction]: Checked pairs total: 221790 [2023-08-31 20:47:39,719 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-08-31 20:47:39,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:39,721 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=true, 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;@46e0363d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:39,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:47:39,763 INFO L130 PetriNetUnfolder]: 174/751 cut-off events. [2023-08-31 20:47:39,763 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-08-31 20:47:39,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:39,763 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:47:39,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:39,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1094121912, now seen corresponding path program 1 times [2023-08-31 20:47:39,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:39,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210516253] [2023-08-31 20:47:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:39,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:39,789 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:39,857 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:39,858 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:39,858 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:47:39,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:47:39,858 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:39,860 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:47:39,860 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:39,860 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:47:39,881 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:47:39,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 375 transitions, 920 flow [2023-08-31 20:47:44,325 INFO L130 PetriNetUnfolder]: 5271/25733 cut-off events. [2023-08-31 20:47:44,325 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:47:44,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30939 conditions, 25733 events. 5271/25733 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 291490 event pairs, 3084 based on Foata normal form. 0/22456 useless extension candidates. Maximal degree in co-relation 15441. Up to 5120 conditions per place. [2023-08-31 20:47:44,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 375 transitions, 920 flow [2023-08-31 20:47:44,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 375 transitions, 920 flow [2023-08-31 20:47:44,943 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:44,943 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 375 transitions, 920 flow [2023-08-31 20:47:44,943 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 375 transitions, 920 flow [2023-08-31 20:47:44,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 375 transitions, 920 flow [2023-08-31 20:47:49,364 INFO L130 PetriNetUnfolder]: 5271/25733 cut-off events. [2023-08-31 20:47:49,365 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:47:49,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30939 conditions, 25733 events. 5271/25733 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 291490 event pairs, 3084 based on Foata normal form. 0/22456 useless extension candidates. Maximal degree in co-relation 15441. Up to 5120 conditions per place. [2023-08-31 20:47:50,467 INFO L119 LiptonReduction]: Number of co-enabled transitions 94380 [2023-08-31 20:47:53,324 INFO L134 LiptonReduction]: Checked pairs total: 256733 [2023-08-31 20:47:53,324 INFO L136 LiptonReduction]: Total number of compositions: 270 [2023-08-31 20:47:53,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:53,325 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=true, 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;@46e0363d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:53,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:47:53,387 INFO L130 PetriNetUnfolder]: 252/1017 cut-off events. [2023-08-31 20:47:53,387 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-08-31 20:47:53,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:53,387 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:47:53,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:53,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:53,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1155876567, now seen corresponding path program 1 times [2023-08-31 20:47:53,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:53,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045564437] [2023-08-31 20:47:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:53,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:53,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:53,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:53,415 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:53,416 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:47:53,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:47:53,416 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:53,416 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:47:53,416 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:53,416 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:47:53,437 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:47:53,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 399 transitions, 996 flow [2023-08-31 20:48:03,030 INFO L130 PetriNetUnfolder]: 11429/51438 cut-off events. [2023-08-31 20:48:03,030 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:48:04,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62802 conditions, 51438 events. 11429/51438 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 649790 event pairs, 7181 based on Foata normal form. 0/45070 useless extension candidates. Maximal degree in co-relation 30917. Up to 11264 conditions per place. [2023-08-31 20:48:04,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 399 transitions, 996 flow [2023-08-31 20:48:04,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 399 transitions, 996 flow [2023-08-31 20:48:04,874 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:48:04,874 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 367 places, 399 transitions, 996 flow [2023-08-31 20:48:04,874 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 367 places, 399 transitions, 996 flow [2023-08-31 20:48:04,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 399 transitions, 996 flow [2023-08-31 20:48:14,482 INFO L130 PetriNetUnfolder]: 11429/51438 cut-off events. [2023-08-31 20:48:14,482 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:48:15,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62802 conditions, 51438 events. 11429/51438 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 649790 event pairs, 7181 based on Foata normal form. 0/45070 useless extension candidates. Maximal degree in co-relation 30917. Up to 11264 conditions per place. [2023-08-31 20:48:16,807 INFO L119 LiptonReduction]: Number of co-enabled transitions 109868 [2023-08-31 20:48:19,419 INFO L134 LiptonReduction]: Checked pairs total: 313604 [2023-08-31 20:48:19,419 INFO L136 LiptonReduction]: Total number of compositions: 283 [2023-08-31 20:48:19,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:48:19,421 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=true, 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;@46e0363d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:48:19,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:48:19,536 INFO L130 PetriNetUnfolder]: 377/1405 cut-off events. [2023-08-31 20:48:19,537 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-08-31 20:48:19,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:48:19,537 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:48:19,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:48:19,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:48:19,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1106627187, now seen corresponding path program 1 times [2023-08-31 20:48:19,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:48:19,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661951827] [2023-08-31 20:48:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:48:19,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:48:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:48:19,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:48:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:48:19,573 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:48:19,573 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:48:19,573 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:48:19,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:48:19,573 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:48:19,574 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:48:19,574 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:48:19,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:48:19,599 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:48:19,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 423 transitions, 1074 flow [2023-08-31 20:48:40,985 INFO L130 PetriNetUnfolder]: 24755/103767 cut-off events. [2023-08-31 20:48:40,986 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:48:44,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128458 conditions, 103767 events. 24755/103767 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 1434738 event pairs, 16398 based on Foata normal form. 0/91236 useless extension candidates. Maximal degree in co-relation 62778. Up to 24576 conditions per place. [2023-08-31 20:48:44,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 389 places, 423 transitions, 1074 flow [2023-08-31 20:48:44,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 389 places, 423 transitions, 1074 flow [2023-08-31 20:48:44,997 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:48:44,997 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 423 transitions, 1074 flow [2023-08-31 20:48:44,998 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 423 transitions, 1074 flow [2023-08-31 20:48:44,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 423 transitions, 1074 flow [2023-08-31 20:49:06,902 INFO L130 PetriNetUnfolder]: 24755/103767 cut-off events. [2023-08-31 20:49:06,903 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:49:11,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128458 conditions, 103767 events. 24755/103767 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 1434738 event pairs, 16398 based on Foata normal form. 0/91236 useless extension candidates. Maximal degree in co-relation 62778. Up to 24576 conditions per place. [2023-08-31 20:49:16,656 INFO L119 LiptonReduction]: Number of co-enabled transitions 126456 [2023-08-31 20:49:19,980 INFO L134 LiptonReduction]: Checked pairs total: 355365 [2023-08-31 20:49:19,980 INFO L136 LiptonReduction]: Total number of compositions: 298 [2023-08-31 20:49:19,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:49:19,982 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=true, 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;@46e0363d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:49:19,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:49:20,129 INFO L130 PetriNetUnfolder]: 591/2018 cut-off events. [2023-08-31 20:49:20,130 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-08-31 20:49:20,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:49:20,130 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:49:20,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:49:20,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:49:20,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1994654908, now seen corresponding path program 1 times [2023-08-31 20:49:20,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:49:20,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783847291] [2023-08-31 20:49:20,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:49:20,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:49:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:49:20,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:49:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:49:20,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:49:20,187 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:49:20,187 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:49:20,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 20:49:20,187 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:49:20,189 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:49:20,189 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:49:20,189 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 20:49:20,214 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 20:49:20,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 447 transitions, 1154 flow [2023-08-31 20:50:05,693 INFO L130 PetriNetUnfolder]: 53441/210368 cut-off events. [2023-08-31 20:50:05,693 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-08-31 20:50:14,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263747 conditions, 210368 events. 53441/210368 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2523. Compared 3168792 event pairs, 36879 based on Foata normal form. 0/185530 useless extension candidates. Maximal degree in co-relation 128432. Up to 53248 conditions per place. [2023-08-31 20:50:14,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 447 transitions, 1154 flow [2023-08-31 20:50:17,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 447 transitions, 1154 flow [2023-08-31 20:50:17,221 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:17,221 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 411 places, 447 transitions, 1154 flow [2023-08-31 20:50:17,221 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 411 places, 447 transitions, 1154 flow [2023-08-31 20:50:17,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 447 transitions, 1154 flow [2023-08-31 20:51:05,426 INFO L130 PetriNetUnfolder]: 53441/210368 cut-off events. [2023-08-31 20:51:05,426 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-08-31 20:51:14,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263747 conditions, 210368 events. 53441/210368 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2523. Compared 3168792 event pairs, 36879 based on Foata normal form. 0/185530 useless extension candidates. Maximal degree in co-relation 128432. Up to 53248 conditions per place. [2023-08-31 20:51:29,636 INFO L119 LiptonReduction]: Number of co-enabled transitions 144144 [2023-08-31 20:51:33,502 INFO L134 LiptonReduction]: Checked pairs total: 422193 [2023-08-31 20:51:33,502 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-08-31 20:51:33,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:51:33,524 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=true, 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;@46e0363d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:51:33,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:51:33,763 INFO L130 PetriNetUnfolder]: 953/2972 cut-off events. [2023-08-31 20:51:33,764 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-08-31 20:51:33,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:51:33,764 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:51:33,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:51:33,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:51:33,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1613036096, now seen corresponding path program 1 times [2023-08-31 20:51:33,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:51:33,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213446749] [2023-08-31 20:51:33,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:51:33,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:51:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:51:33,779 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:51:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:51:33,804 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:51:33,804 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:51:33,804 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:51:33,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 20:51:33,804 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:51:33,805 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:51:33,805 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:51:33,805 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-31 20:51:33,828 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-08-31 20:51:33,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 433 places, 471 transitions, 1236 flow