./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.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_42-trylock2_racefree.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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --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 20:55:38,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:55:38,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:55:38,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:55:38,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:55:38,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:55:38,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:55:38,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:55:38,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:55:38,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:55:38,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:55:38,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:55:38,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:55:38,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:55:38,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:55:38,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:55:38,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:55:38,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:55:38,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:55:38,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:55:38,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:55:38,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:55:38,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:55:38,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:55:38,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:55:38,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:55:38,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:55:38,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:55:38,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:55:38,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:55:38,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:55:38,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:55:38,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:55:38,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:55:38,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:55:38,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:55:38,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:55:38,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:55:38,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:55:38,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:55:38,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:55:38,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:55:38,152 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:55:38,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:55:38,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:55:38,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:55:38,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:55:38,154 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:55:38,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:55:38,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:55:38,155 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:55:38,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:55:38,156 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:55:38,156 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:55:38,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:55:38,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:55:38,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:55:38,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:55:38,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:55:38,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:55:38,158 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:55:38,158 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:55:38,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:55:38,158 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:55:38,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:55:38,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:55:38,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:55:38,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:55:38,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:55:38,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:55:38,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:55:38,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:55:38,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:55:38,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:55:38,160 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:55:38,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:55:38,161 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:55:38,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:55:38,161 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:55:38,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:55:38,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:55:38,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:55:38,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:55:38,447 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:55:38,448 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:55:38,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-08-31 20:55:39,626 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:55:39,931 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:55:39,931 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-08-31 20:55:39,942 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d78820a2/f9ded42e35b5490ca23a6360cdddad1d/FLAGe63425f72 [2023-08-31 20:55:39,956 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d78820a2/f9ded42e35b5490ca23a6360cdddad1d [2023-08-31 20:55:39,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:55:39,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:55:39,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:55:39,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:55:39,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:55:39,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:55:39" (1/1) ... [2023-08-31 20:55:39,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e5e528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:39, skipping insertion in model container [2023-08-31 20:55:39,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:55:39" (1/1) ... [2023-08-31 20:55:39,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:55:40,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:55:40,232 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_42-trylock2_racefree.i[30176,30189] [2023-08-31 20:55:40,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:55:40,286 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:55:40,327 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_42-trylock2_racefree.i[30176,30189] [2023-08-31 20:55:40,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:55:40,397 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:55:40,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:40 WrapperNode [2023-08-31 20:55:40,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:55:40,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:55:40,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:55:40,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:55:40,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:40" (1/1) ... [2023-08-31 20:55:40,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:40" (1/1) ... [2023-08-31 20:55:40,466 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 143 [2023-08-31 20:55:40,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:55:40,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:55:40,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:55:40,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:55:40,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:40" (1/1) ... [2023-08-31 20:55:40,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:40" (1/1) ... [2023-08-31 20:55:40,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:40" (1/1) ... [2023-08-31 20:55:40,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:40" (1/1) ... [2023-08-31 20:55:40,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:40" (1/1) ... [2023-08-31 20:55:40,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:40" (1/1) ... [2023-08-31 20:55:40,512 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:40" (1/1) ... [2023-08-31 20:55:40,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:40" (1/1) ... [2023-08-31 20:55:40,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:55:40,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:55:40,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:55:40,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:55:40,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:40" (1/1) ... [2023-08-31 20:55:40,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:55:40,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:55:40,568 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 20:55:40,579 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 20:55:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:55:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:55:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:55:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:55:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:55:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:55:40,605 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:55:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:55:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-31 20:55:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:55:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:55:40,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:55:40,607 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 20:55:40,775 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:55:40,790 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:55:41,091 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:55:41,099 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:55:41,099 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-31 20:55:41,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:55:41 BoogieIcfgContainer [2023-08-31 20:55:41,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:55:41,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:55:41,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:55:41,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:55:41,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:55:39" (1/3) ... [2023-08-31 20:55:41,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9e70c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:55:41, skipping insertion in model container [2023-08-31 20:55:41,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:40" (2/3) ... [2023-08-31 20:55:41,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9e70c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:55:41, skipping insertion in model container [2023-08-31 20:55:41,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:55:41" (3/3) ... [2023-08-31 20:55:41,108 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2023-08-31 20:55:41,115 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:55:41,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:55:41,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-31 20:55:41,123 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:55:41,186 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:55:41,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 230 transitions, 468 flow [2023-08-31 20:55:41,298 INFO L130 PetriNetUnfolder]: 45/329 cut-off events. [2023-08-31 20:55:41,298 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:55:41,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 329 events. 45/329 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1459 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 189. Up to 6 conditions per place. [2023-08-31 20:55:41,306 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 230 transitions, 468 flow [2023-08-31 20:55:41,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 225 transitions, 455 flow [2023-08-31 20:55:41,314 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:41,322 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 225 transitions, 455 flow [2023-08-31 20:55:41,325 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 225 transitions, 455 flow [2023-08-31 20:55:41,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 225 transitions, 455 flow [2023-08-31 20:55:41,392 INFO L130 PetriNetUnfolder]: 44/324 cut-off events. [2023-08-31 20:55:41,392 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:55:41,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 324 events. 44/324 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1456 event pairs, 0 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 189. Up to 6 conditions per place. [2023-08-31 20:55:41,404 INFO L119 LiptonReduction]: Number of co-enabled transitions 17850 [2023-08-31 20:55:44,744 INFO L134 LiptonReduction]: Checked pairs total: 58010 [2023-08-31 20:55:44,745 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-08-31 20:55:44,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:44,763 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;@36dacecc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:44,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:44,768 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2023-08-31 20:55:44,769 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:55:44,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:44,769 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:55:44,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:44,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:44,774 INFO L85 PathProgramCache]: Analyzing trace with hash -928680621, now seen corresponding path program 1 times [2023-08-31 20:55:44,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:44,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813341477] [2023-08-31 20:55:44,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:44,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:44,901 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:44,954 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:44,955 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:44,956 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:44,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:55:44,958 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:44,960 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:44,961 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:44,961 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:55:44,993 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:55:44,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 317 transitions, 652 flow [2023-08-31 20:55:45,080 INFO L130 PetriNetUnfolder]: 76/545 cut-off events. [2023-08-31 20:55:45,080 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:55:45,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 545 events. 76/545 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2713 event pairs, 0 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 331. Up to 9 conditions per place. [2023-08-31 20:55:45,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 317 transitions, 652 flow [2023-08-31 20:55:45,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 317 transitions, 652 flow [2023-08-31 20:55:45,092 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:45,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 317 transitions, 652 flow [2023-08-31 20:55:45,092 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 317 transitions, 652 flow [2023-08-31 20:55:45,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 317 transitions, 652 flow [2023-08-31 20:55:45,156 INFO L130 PetriNetUnfolder]: 76/545 cut-off events. [2023-08-31 20:55:45,156 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:55:45,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 545 events. 76/545 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2713 event pairs, 0 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 331. Up to 9 conditions per place. [2023-08-31 20:55:45,186 INFO L119 LiptonReduction]: Number of co-enabled transitions 52020 [2023-08-31 20:55:48,763 INFO L134 LiptonReduction]: Checked pairs total: 234404 [2023-08-31 20:55:48,763 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-08-31 20:55:48,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:48,774 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;@36dacecc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:48,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:48,784 INFO L130 PetriNetUnfolder]: 23/133 cut-off events. [2023-08-31 20:55:48,786 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 20:55:48,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:48,787 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:55:48,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:48,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:48,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1630762489, now seen corresponding path program 1 times [2023-08-31 20:55:48,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:48,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739277240] [2023-08-31 20:55:48,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:48,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:48,815 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:48,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:48,851 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:48,851 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:48,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:55:48,851 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:48,852 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:48,852 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:48,852 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:55:48,888 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:55:48,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 356 places, 404 transitions, 838 flow [2023-08-31 20:55:49,036 INFO L130 PetriNetUnfolder]: 112/804 cut-off events. [2023-08-31 20:55:49,036 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:55:49,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 804 events. 112/804 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4185 event pairs, 1 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 553. Up to 16 conditions per place. [2023-08-31 20:55:49,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 356 places, 404 transitions, 838 flow [2023-08-31 20:55:49,054 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 356 places, 404 transitions, 838 flow [2023-08-31 20:55:49,054 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:49,055 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 356 places, 404 transitions, 838 flow [2023-08-31 20:55:49,055 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 356 places, 404 transitions, 838 flow [2023-08-31 20:55:49,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 356 places, 404 transitions, 838 flow [2023-08-31 20:55:49,179 INFO L130 PetriNetUnfolder]: 112/804 cut-off events. [2023-08-31 20:55:49,180 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:55:49,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 804 events. 112/804 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4185 event pairs, 1 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 553. Up to 16 conditions per place. [2023-08-31 20:55:49,221 INFO L119 LiptonReduction]: Number of co-enabled transitions 100470 [2023-08-31 20:55:52,674 INFO L134 LiptonReduction]: Checked pairs total: 431486 [2023-08-31 20:55:52,675 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-08-31 20:55:52,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:52,677 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;@36dacecc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:52,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:52,694 INFO L130 PetriNetUnfolder]: 46/243 cut-off events. [2023-08-31 20:55:52,694 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 20:55:52,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:52,695 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:55:52,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:52,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash -727850397, now seen corresponding path program 1 times [2023-08-31 20:55:52,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:52,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224891995] [2023-08-31 20:55:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:52,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:52,721 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:52,743 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:52,743 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:52,744 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:52,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:55:52,744 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:52,745 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:52,745 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:52,745 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:55:52,773 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:55:52,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 491 transitions, 1026 flow [2023-08-31 20:55:52,961 INFO L130 PetriNetUnfolder]: 160/1151 cut-off events. [2023-08-31 20:55:52,961 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:55:52,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 1151 events. 160/1151 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6200 event pairs, 6 based on Foata normal form. 0/923 useless extension candidates. Maximal degree in co-relation 824. Up to 32 conditions per place. [2023-08-31 20:55:52,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 432 places, 491 transitions, 1026 flow [2023-08-31 20:55:52,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 432 places, 491 transitions, 1026 flow [2023-08-31 20:55:52,998 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:52,998 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 432 places, 491 transitions, 1026 flow [2023-08-31 20:55:52,998 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 432 places, 491 transitions, 1026 flow [2023-08-31 20:55:52,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 491 transitions, 1026 flow [2023-08-31 20:55:53,200 INFO L130 PetriNetUnfolder]: 160/1151 cut-off events. [2023-08-31 20:55:53,200 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:55:53,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 1151 events. 160/1151 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6200 event pairs, 6 based on Foata normal form. 0/923 useless extension candidates. Maximal degree in co-relation 824. Up to 32 conditions per place. [2023-08-31 20:55:53,273 INFO L119 LiptonReduction]: Number of co-enabled transitions 163880 [2023-08-31 20:55:56,930 INFO L134 LiptonReduction]: Checked pairs total: 802101 [2023-08-31 20:55:56,930 INFO L136 LiptonReduction]: Total number of compositions: 248 [2023-08-31 20:55:56,932 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:56,933 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;@36dacecc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:56,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:56,969 INFO L130 PetriNetUnfolder]: 72/360 cut-off events. [2023-08-31 20:55:56,970 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:55:56,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:56,970 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:55:56,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:56,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash 103064909, now seen corresponding path program 1 times [2023-08-31 20:55:56,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:56,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570485121] [2023-08-31 20:55:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:56,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:56,996 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:57,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:57,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:57,045 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:57,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:55:57,045 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:57,046 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:57,046 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:57,046 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:55:57,101 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:55:57,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 508 places, 578 transitions, 1216 flow [2023-08-31 20:55:57,448 INFO L130 PetriNetUnfolder]: 236/1678 cut-off events. [2023-08-31 20:55:57,448 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:55:57,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1789 conditions, 1678 events. 236/1678 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 9620 event pairs, 23 based on Foata normal form. 0/1362 useless extension candidates. Maximal degree in co-relation 1196. Up to 80 conditions per place. [2023-08-31 20:55:57,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 508 places, 578 transitions, 1216 flow [2023-08-31 20:55:57,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 508 places, 578 transitions, 1216 flow [2023-08-31 20:55:57,507 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:57,507 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 508 places, 578 transitions, 1216 flow [2023-08-31 20:55:57,507 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 508 places, 578 transitions, 1216 flow [2023-08-31 20:55:57,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 508 places, 578 transitions, 1216 flow [2023-08-31 20:55:57,877 INFO L130 PetriNetUnfolder]: 236/1678 cut-off events. [2023-08-31 20:55:57,878 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:55:57,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1789 conditions, 1678 events. 236/1678 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 9620 event pairs, 23 based on Foata normal form. 0/1362 useless extension candidates. Maximal degree in co-relation 1196. Up to 80 conditions per place. [2023-08-31 20:55:58,092 INFO L119 LiptonReduction]: Number of co-enabled transitions 242250 [2023-08-31 20:56:02,009 INFO L134 LiptonReduction]: Checked pairs total: 1089023 [2023-08-31 20:56:02,010 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-08-31 20:56:02,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:02,012 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;@36dacecc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:02,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:02,054 INFO L130 PetriNetUnfolder]: 98/480 cut-off events. [2023-08-31 20:56:02,054 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 20:56:02,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:02,055 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:56:02,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:02,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:02,056 INFO L85 PathProgramCache]: Analyzing trace with hash -168135208, now seen corresponding path program 1 times [2023-08-31 20:56:02,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:02,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206033789] [2023-08-31 20:56:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:02,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:02,077 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:02,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:02,099 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:02,099 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:02,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:56:02,100 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:02,100 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:02,101 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:02,101 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:56:02,133 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:56:02,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 584 places, 665 transitions, 1408 flow [2023-08-31 20:56:02,971 INFO L130 PetriNetUnfolder]: 376/2573 cut-off events. [2023-08-31 20:56:02,973 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:56:03,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 2573 events. 376/2573 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 16491 event pairs, 72 based on Foata normal form. 0/2121 useless extension candidates. Maximal degree in co-relation 1777. Up to 192 conditions per place. [2023-08-31 20:56:03,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 584 places, 665 transitions, 1408 flow [2023-08-31 20:56:03,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 584 places, 665 transitions, 1408 flow [2023-08-31 20:56:03,069 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:03,070 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 584 places, 665 transitions, 1408 flow [2023-08-31 20:56:03,070 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 584 places, 665 transitions, 1408 flow [2023-08-31 20:56:03,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 584 places, 665 transitions, 1408 flow [2023-08-31 20:56:03,792 INFO L130 PetriNetUnfolder]: 376/2573 cut-off events. [2023-08-31 20:56:03,793 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:56:03,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 2573 events. 376/2573 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 16491 event pairs, 72 based on Foata normal form. 0/2121 useless extension candidates. Maximal degree in co-relation 1777. Up to 192 conditions per place. [2023-08-31 20:56:04,009 INFO L119 LiptonReduction]: Number of co-enabled transitions 335580 [2023-08-31 20:56:08,120 INFO L134 LiptonReduction]: Checked pairs total: 1514194 [2023-08-31 20:56:08,120 INFO L136 LiptonReduction]: Total number of compositions: 323 [2023-08-31 20:56:08,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:08,123 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;@36dacecc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:08,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:08,194 INFO L130 PetriNetUnfolder]: 119/590 cut-off events. [2023-08-31 20:56:08,194 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-08-31 20:56:08,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:08,194 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:56:08,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:08,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:08,195 INFO L85 PathProgramCache]: Analyzing trace with hash -623319992, now seen corresponding path program 1 times [2023-08-31 20:56:08,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:08,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283222028] [2023-08-31 20:56:08,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:08,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:08,219 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:08,241 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:08,241 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:08,242 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:08,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:56:08,242 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:08,243 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:08,243 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:08,243 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:56:08,290 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:56:08,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 660 places, 752 transitions, 1602 flow [2023-08-31 20:56:09,460 INFO L130 PetriNetUnfolder]: 660/4220 cut-off events. [2023-08-31 20:56:09,461 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:56:09,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4718 conditions, 4220 events. 660/4220 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 30874 event pairs, 201 based on Foata normal form. 0/3536 useless extension candidates. Maximal degree in co-relation 2791. Up to 448 conditions per place. [2023-08-31 20:56:09,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 660 places, 752 transitions, 1602 flow [2023-08-31 20:56:09,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 660 places, 752 transitions, 1602 flow [2023-08-31 20:56:09,631 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:09,631 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 660 places, 752 transitions, 1602 flow [2023-08-31 20:56:09,631 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 660 places, 752 transitions, 1602 flow [2023-08-31 20:56:09,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 660 places, 752 transitions, 1602 flow [2023-08-31 20:56:10,696 INFO L130 PetriNetUnfolder]: 660/4220 cut-off events. [2023-08-31 20:56:10,696 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:56:10,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4718 conditions, 4220 events. 660/4220 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 30874 event pairs, 201 based on Foata normal form. 0/3536 useless extension candidates. Maximal degree in co-relation 2791. Up to 448 conditions per place. [2023-08-31 20:56:11,184 INFO L119 LiptonReduction]: Number of co-enabled transitions 443870 [2023-08-31 20:56:15,189 INFO L134 LiptonReduction]: Checked pairs total: 2045964 [2023-08-31 20:56:15,189 INFO L136 LiptonReduction]: Total number of compositions: 352 [2023-08-31 20:56:15,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:15,191 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;@36dacecc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:15,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:15,263 INFO L130 PetriNetUnfolder]: 154/742 cut-off events. [2023-08-31 20:56:15,264 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-08-31 20:56:15,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:15,265 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:56:15,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:15,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash 773730402, now seen corresponding path program 1 times [2023-08-31 20:56:15,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:15,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799947183] [2023-08-31 20:56:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:15,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:15,310 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:15,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:15,353 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:15,354 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:15,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:56:15,354 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:15,355 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:15,355 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:15,355 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:56:15,401 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:56:15,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 736 places, 839 transitions, 1798 flow [2023-08-31 20:56:17,367 INFO L130 PetriNetUnfolder]: 1264/7403 cut-off events. [2023-08-31 20:56:17,367 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:56:17,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8488 conditions, 7403 events. 1264/7403 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 63145 event pairs, 522 based on Foata normal form. 0/6295 useless extension candidates. Maximal degree in co-relation 4702. Up to 1024 conditions per place. [2023-08-31 20:56:17,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 736 places, 839 transitions, 1798 flow [2023-08-31 20:56:17,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 736 places, 839 transitions, 1798 flow [2023-08-31 20:56:17,694 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:17,695 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 736 places, 839 transitions, 1798 flow [2023-08-31 20:56:17,695 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 736 places, 839 transitions, 1798 flow [2023-08-31 20:56:17,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 736 places, 839 transitions, 1798 flow [2023-08-31 20:56:19,457 INFO L130 PetriNetUnfolder]: 1264/7403 cut-off events. [2023-08-31 20:56:19,457 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:56:19,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8488 conditions, 7403 events. 1264/7403 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 63145 event pairs, 522 based on Foata normal form. 0/6295 useless extension candidates. Maximal degree in co-relation 4702. Up to 1024 conditions per place. [2023-08-31 20:56:20,305 INFO L119 LiptonReduction]: Number of co-enabled transitions 567120 [2023-08-31 20:56:25,196 INFO L134 LiptonReduction]: Checked pairs total: 3001504 [2023-08-31 20:56:25,197 INFO L136 LiptonReduction]: Total number of compositions: 391 [2023-08-31 20:56:25,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:25,199 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;@36dacecc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:25,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:25,304 INFO L130 PetriNetUnfolder]: 180/872 cut-off events. [2023-08-31 20:56:25,304 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2023-08-31 20:56:25,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:25,304 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:56:25,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:25,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:25,305 INFO L85 PathProgramCache]: Analyzing trace with hash -935379328, now seen corresponding path program 1 times [2023-08-31 20:56:25,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:25,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386399381] [2023-08-31 20:56:25,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:25,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:25,327 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:25,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:25,355 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:25,355 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:25,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:56:25,355 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:25,356 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:25,357 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:25,357 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:56:25,407 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:56:25,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 812 places, 926 transitions, 1996 flow [2023-08-31 20:56:30,184 INFO L130 PetriNetUnfolder]: 2572/13722 cut-off events. [2023-08-31 20:56:30,184 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:56:30,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16099 conditions, 13722 events. 2572/13722 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 135699 event pairs, 1291 based on Foata normal form. 0/11806 useless extension candidates. Maximal degree in co-relation 8470. Up to 2304 conditions per place. [2023-08-31 20:56:30,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 812 places, 926 transitions, 1996 flow [2023-08-31 20:56:30,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 812 places, 926 transitions, 1996 flow [2023-08-31 20:56:30,850 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:30,850 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 812 places, 926 transitions, 1996 flow [2023-08-31 20:56:30,850 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 812 places, 926 transitions, 1996 flow [2023-08-31 20:56:30,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 812 places, 926 transitions, 1996 flow [2023-08-31 20:56:35,464 INFO L130 PetriNetUnfolder]: 2572/13722 cut-off events. [2023-08-31 20:56:35,464 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:56:35,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16099 conditions, 13722 events. 2572/13722 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 135699 event pairs, 1291 based on Foata normal form. 0/11806 useless extension candidates. Maximal degree in co-relation 8470. Up to 2304 conditions per place. [2023-08-31 20:56:37,282 INFO L119 LiptonReduction]: Number of co-enabled transitions 705330 [2023-08-31 20:56:42,200 INFO L134 LiptonReduction]: Checked pairs total: 3301273 [2023-08-31 20:56:42,200 INFO L136 LiptonReduction]: Total number of compositions: 419 [2023-08-31 20:56:42,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:42,202 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;@36dacecc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:42,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:42,350 INFO L130 PetriNetUnfolder]: 205/1019 cut-off events. [2023-08-31 20:56:42,350 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2023-08-31 20:56:42,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:42,350 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:56:42,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:42,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:42,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1553104738, now seen corresponding path program 1 times [2023-08-31 20:56:42,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:42,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651243431] [2023-08-31 20:56:42,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:42,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:42,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:42,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:42,395 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:42,395 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:42,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:56:42,395 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:42,396 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:42,396 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:42,396 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:56:42,453 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:56:42,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 888 places, 1013 transitions, 2196 flow [2023-08-31 20:56:52,816 INFO L130 PetriNetUnfolder]: 5416/26441 cut-off events. [2023-08-31 20:56:52,816 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:56:53,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31647 conditions, 26441 events. 5416/26441 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 296555 event pairs, 3084 based on Foata normal form. 0/22949 useless extension candidates. Maximal degree in co-relation 16079. Up to 5120 conditions per place. [2023-08-31 20:56:53,934 INFO L82 GeneralOperation]: Start removeDead. Operand has 888 places, 1013 transitions, 2196 flow [2023-08-31 20:56:54,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 888 places, 1013 transitions, 2196 flow [2023-08-31 20:56:54,401 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:54,401 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 888 places, 1013 transitions, 2196 flow [2023-08-31 20:56:54,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 888 places, 1013 transitions, 2196 flow [2023-08-31 20:56:54,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 888 places, 1013 transitions, 2196 flow [2023-08-31 20:57:04,717 INFO L130 PetriNetUnfolder]: 5416/26441 cut-off events. [2023-08-31 20:57:04,718 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:57:05,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31647 conditions, 26441 events. 5416/26441 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 296555 event pairs, 3084 based on Foata normal form. 0/22949 useless extension candidates. Maximal degree in co-relation 16079. Up to 5120 conditions per place. [2023-08-31 20:57:08,875 INFO L119 LiptonReduction]: Number of co-enabled transitions 858500 [2023-08-31 20:57:14,562 INFO L134 LiptonReduction]: Checked pairs total: 4100710 [2023-08-31 20:57:14,562 INFO L136 LiptonReduction]: Total number of compositions: 462 [2023-08-31 20:57:14,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:57:14,564 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;@36dacecc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:57:14,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:57:14,733 INFO L130 PetriNetUnfolder]: 258/1230 cut-off events. [2023-08-31 20:57:14,733 INFO L131 PetriNetUnfolder]: For 308/308 co-relation queries the response was YES. [2023-08-31 20:57:14,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:57:14,733 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:57:14,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:57:14,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:57:14,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1927300989, now seen corresponding path program 1 times [2023-08-31 20:57:14,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:57:14,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502618807] [2023-08-31 20:57:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:57:14,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:57:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:57:14,756 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:57:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:57:14,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:57:14,776 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:57:14,776 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:57:14,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:57:14,776 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:57:14,777 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:57:14,777 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:57:14,777 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:57:14,827 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:57:14,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 964 places, 1100 transitions, 2398 flow [2023-08-31 20:57:37,271 INFO L130 PetriNetUnfolder]: 11588/52216 cut-off events. [2023-08-31 20:57:37,271 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:57:42,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63580 conditions, 52216 events. 11588/52216 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 655354 event pairs, 7181 based on Foata normal form. 0/45612 useless extension candidates. Maximal degree in co-relation 31625. Up to 11264 conditions per place. [2023-08-31 20:57:42,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 964 places, 1100 transitions, 2398 flow [2023-08-31 20:57:43,900 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 964 places, 1100 transitions, 2398 flow [2023-08-31 20:57:43,900 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:57:43,900 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 964 places, 1100 transitions, 2398 flow [2023-08-31 20:57:43,901 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 964 places, 1100 transitions, 2398 flow [2023-08-31 20:57:43,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 964 places, 1100 transitions, 2398 flow [2023-08-31 20:58:07,539 INFO L130 PetriNetUnfolder]: 11588/52216 cut-off events. [2023-08-31 20:58:07,539 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:58:11,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63580 conditions, 52216 events. 11588/52216 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 655354 event pairs, 7181 based on Foata normal form. 0/45612 useless extension candidates. Maximal degree in co-relation 31625. Up to 11264 conditions per place. [2023-08-31 20:58:19,313 INFO L119 LiptonReduction]: Number of co-enabled transitions 1026630 [2023-08-31 20:58:24,838 INFO L134 LiptonReduction]: Checked pairs total: 4943812 [2023-08-31 20:58:24,839 INFO L136 LiptonReduction]: Total number of compositions: 492 [2023-08-31 20:58:24,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:24,840 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;@36dacecc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:24,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:25,072 INFO L130 PetriNetUnfolder]: 318/1470 cut-off events. [2023-08-31 20:58:25,073 INFO L131 PetriNetUnfolder]: For 436/436 co-relation queries the response was YES. [2023-08-31 20:58:25,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:25,073 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:58:25,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:25,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:25,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1251567857, now seen corresponding path program 1 times [2023-08-31 20:58:25,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:25,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255806141] [2023-08-31 20:58:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:25,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:25,097 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:25,118 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:25,118 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:25,119 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:25,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:58:25,119 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:25,120 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:25,120 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:25,120 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:58:25,172 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:58:25,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1040 places, 1187 transitions, 2602 flow [2023-08-31 20:59:22,031 INFO L130 PetriNetUnfolder]: 24928/104615 cut-off events. [2023-08-31 20:59:22,031 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:59:36,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129306 conditions, 104615 events. 24928/104615 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 1442528 event pairs, 16398 based on Foata normal form. 0/91827 useless extension candidates. Maximal degree in co-relation 63556. Up to 24576 conditions per place. [2023-08-31 20:59:36,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 1040 places, 1187 transitions, 2602 flow [2023-08-31 20:59:40,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1040 places, 1187 transitions, 2602 flow [2023-08-31 20:59:40,880 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:59:40,880 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1040 places, 1187 transitions, 2602 flow [2023-08-31 20:59:40,880 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1040 places, 1187 transitions, 2602 flow [2023-08-31 20:59:40,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1040 places, 1187 transitions, 2602 flow [2023-08-31 21:00:33,409 INFO L130 PetriNetUnfolder]: 24928/104615 cut-off events. [2023-08-31 21:00:33,410 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 21:00:48,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129306 conditions, 104615 events. 24928/104615 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 1442528 event pairs, 16398 based on Foata normal form. 0/91827 useless extension candidates. Maximal degree in co-relation 63556. Up to 24576 conditions per place. [2023-08-31 21:01:15,899 INFO L119 LiptonReduction]: Number of co-enabled transitions 1209720 [2023-08-31 21:01:21,761 INFO L134 LiptonReduction]: Checked pairs total: 5857809 [2023-08-31 21:01:21,762 INFO L136 LiptonReduction]: Total number of compositions: 526 [2023-08-31 21:01:21,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:01:21,764 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;@36dacecc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:01:21,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 21:01:22,102 INFO L130 PetriNetUnfolder]: 402/1779 cut-off events. [2023-08-31 21:01:22,103 INFO L131 PetriNetUnfolder]: For 613/613 co-relation queries the response was YES. [2023-08-31 21:01:22,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:01:22,103 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 21:01:22,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:01:22,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:01:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1188924031, now seen corresponding path program 1 times [2023-08-31 21:01:22,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:01:22,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953891460] [2023-08-31 21:01:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:01:22,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:01:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:01:22,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:01:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:01:22,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:01:22,149 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:01:22,149 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 21:01:22,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 21:01:22,149 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:01:22,150 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 21:01:22,150 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:01:22,150 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 21:01:22,207 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 21:01:22,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1116 places, 1274 transitions, 2808 flow