./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --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 20:50:26,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:50:26,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:50:27,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:50:27,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:50:27,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:50:27,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:50:27,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:50:27,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:50:27,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:50:27,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:50:27,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:50:27,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:50:27,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:50:27,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:50:27,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:50:27,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:50:27,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:50:27,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:50:27,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:50:27,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:50:27,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:50:27,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:50:27,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:50:27,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:50:27,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:50:27,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:50:27,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:50:27,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:50:27,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:50:27,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:50:27,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:50:27,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:50:27,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:50:27,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:50:27,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:50:27,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:50:27,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:50:27,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:50:27,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:50:27,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:50:27,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:50:27,106 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:50:27,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:50:27,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:50:27,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:50:27,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:50:27,108 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:50:27,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:50:27,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:50:27,109 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:50:27,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:50:27,110 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:50:27,110 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:50:27,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:50:27,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:50:27,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:50:27,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:50:27,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:50:27,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:50:27,111 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:50:27,111 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:50:27,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:50:27,112 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:50:27,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:50:27,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:50:27,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:50:27,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:50:27,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:50:27,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:50:27,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:50:27,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:50:27,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:50:27,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:50:27,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:50:27,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:50:27,115 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:50:27,115 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:50:27,115 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:50:27,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:50:27,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:50:27,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:50:27,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:50:27,425 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:50:27,425 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:50:27,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-08-31 20:50:28,554 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:50:28,865 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:50:28,865 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-08-31 20:50:28,887 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06fee0ab/772e3f2b2fd4464db4806b8d6fb6a294/FLAG2324f16f3 [2023-08-31 20:50:28,903 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06fee0ab/772e3f2b2fd4464db4806b8d6fb6a294 [2023-08-31 20:50:28,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:50:28,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:50:28,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:50:28,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:50:28,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:50:28,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:50:28" (1/1) ... [2023-08-31 20:50:28,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700c4d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:28, skipping insertion in model container [2023-08-31 20:50:28,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:50:28" (1/1) ... [2023-08-31 20:50:28,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:50:28,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:50:29,278 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_27-funptr_racing.i[41323,41336] [2023-08-31 20:50:29,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:50:29,330 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:50:29,367 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_27-funptr_racing.i[41323,41336] [2023-08-31 20:50:29,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:50:29,473 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 20:50:29,479 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:50:29,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:29 WrapperNode [2023-08-31 20:50:29,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:50:29,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:50:29,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:50:29,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:50:29,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:29" (1/1) ... [2023-08-31 20:50:29,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:29" (1/1) ... [2023-08-31 20:50:29,549 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 185 [2023-08-31 20:50:29,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:50:29,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:50:29,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:50:29,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:50:29,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:29" (1/1) ... [2023-08-31 20:50:29,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:29" (1/1) ... [2023-08-31 20:50:29,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:29" (1/1) ... [2023-08-31 20:50:29,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:29" (1/1) ... [2023-08-31 20:50:29,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:29" (1/1) ... [2023-08-31 20:50:29,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:29" (1/1) ... [2023-08-31 20:50:29,601 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:29" (1/1) ... [2023-08-31 20:50:29,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:29" (1/1) ... [2023-08-31 20:50:29,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:50:29,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:50:29,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:50:29,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:50:29,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:29" (1/1) ... [2023-08-31 20:50:29,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:50:29,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:50:29,646 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 20:50:29,670 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 20:50:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:50:29,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:50:29,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:50:29,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:50:29,689 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:50:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:50:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:50:29,690 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:50:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:50:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:50:29,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:50:29,692 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 20:50:29,885 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:50:29,887 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:50:30,190 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:50:30,204 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:50:30,204 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-31 20:50:30,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:50:30 BoogieIcfgContainer [2023-08-31 20:50:30,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:50:30,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:50:30,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:50:30,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:50:30,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:50:28" (1/3) ... [2023-08-31 20:50:30,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aafcd12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:50:30, skipping insertion in model container [2023-08-31 20:50:30,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:50:29" (2/3) ... [2023-08-31 20:50:30,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aafcd12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:50:30, skipping insertion in model container [2023-08-31 20:50:30,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:50:30" (3/3) ... [2023-08-31 20:50:30,215 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-08-31 20:50:30,223 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:50:30,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:50:30,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-31 20:50:30,233 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:50:30,328 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:50:30,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 193 transitions, 394 flow [2023-08-31 20:50:30,467 INFO L130 PetriNetUnfolder]: 24/243 cut-off events. [2023-08-31 20:50:30,468 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:50:30,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 243 events. 24/243 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 817 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 152. Up to 4 conditions per place. [2023-08-31 20:50:30,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 193 transitions, 394 flow [2023-08-31 20:50:30,485 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 188 transitions, 381 flow [2023-08-31 20:50:30,489 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:30,502 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 188 transitions, 381 flow [2023-08-31 20:50:30,505 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 188 transitions, 381 flow [2023-08-31 20:50:30,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 188 transitions, 381 flow [2023-08-31 20:50:30,570 INFO L130 PetriNetUnfolder]: 23/238 cut-off events. [2023-08-31 20:50:30,570 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:50:30,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 238 events. 23/238 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 815 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 152. Up to 4 conditions per place. [2023-08-31 20:50:30,581 INFO L119 LiptonReduction]: Number of co-enabled transitions 10864 [2023-08-31 20:50:34,008 INFO L134 LiptonReduction]: Checked pairs total: 31863 [2023-08-31 20:50:34,009 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-31 20:50:34,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:34,024 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;@1a6727f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:34,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:34,028 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2023-08-31 20:50:34,028 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:50:34,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:34,029 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:50:34,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:34,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash -316159251, now seen corresponding path program 1 times [2023-08-31 20:50:34,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:34,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805706084] [2023-08-31 20:50:34,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:34,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:34,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:34,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:34,278 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:34,279 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:34,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:50:34,281 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:34,286 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:34,287 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:34,287 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:50:34,354 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:50:34,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 292 transitions, 602 flow [2023-08-31 20:50:34,432 INFO L130 PetriNetUnfolder]: 45/422 cut-off events. [2023-08-31 20:50:34,432 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:50:34,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 422 events. 45/422 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1800 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 270. Up to 8 conditions per place. [2023-08-31 20:50:34,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 292 transitions, 602 flow [2023-08-31 20:50:34,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 292 transitions, 602 flow [2023-08-31 20:50:34,443 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:34,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 292 transitions, 602 flow [2023-08-31 20:50:34,443 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 292 transitions, 602 flow [2023-08-31 20:50:34,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 292 transitions, 602 flow [2023-08-31 20:50:34,516 INFO L130 PetriNetUnfolder]: 45/422 cut-off events. [2023-08-31 20:50:34,517 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:50:34,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 422 events. 45/422 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1800 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 270. Up to 8 conditions per place. [2023-08-31 20:50:34,544 INFO L119 LiptonReduction]: Number of co-enabled transitions 42680 [2023-08-31 20:50:37,852 INFO L134 LiptonReduction]: Checked pairs total: 173252 [2023-08-31 20:50:37,853 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-08-31 20:50:37,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:37,859 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;@1a6727f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:37,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:37,869 INFO L130 PetriNetUnfolder]: 2/55 cut-off events. [2023-08-31 20:50:37,870 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 20:50:37,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:37,870 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:50:37,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:37,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:37,871 INFO L85 PathProgramCache]: Analyzing trace with hash -646034171, now seen corresponding path program 1 times [2023-08-31 20:50:37,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:37,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985473459] [2023-08-31 20:50:37,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:37,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:37,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:37,954 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:37,954 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:37,955 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:37,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:50:37,955 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:37,955 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:37,956 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:37,956 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:50:38,003 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:50:38,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 391 transitions, 812 flow [2023-08-31 20:50:38,132 INFO L130 PetriNetUnfolder]: 71/644 cut-off events. [2023-08-31 20:50:38,132 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:50:38,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 644 events. 71/644 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3018 event pairs, 1 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 430. Up to 16 conditions per place. [2023-08-31 20:50:38,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 391 transitions, 812 flow [2023-08-31 20:50:38,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 391 transitions, 812 flow [2023-08-31 20:50:38,154 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:38,154 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 391 transitions, 812 flow [2023-08-31 20:50:38,155 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 391 transitions, 812 flow [2023-08-31 20:50:38,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 391 transitions, 812 flow [2023-08-31 20:50:38,272 INFO L130 PetriNetUnfolder]: 71/644 cut-off events. [2023-08-31 20:50:38,272 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:50:38,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 644 events. 71/644 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3018 event pairs, 1 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 430. Up to 16 conditions per place. [2023-08-31 20:50:38,312 INFO L119 LiptonReduction]: Number of co-enabled transitions 93120 [2023-08-31 20:50:41,846 INFO L134 LiptonReduction]: Checked pairs total: 405679 [2023-08-31 20:50:41,846 INFO L136 LiptonReduction]: Total number of compositions: 208 [2023-08-31 20:50:41,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:41,848 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;@1a6727f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:41,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:41,858 INFO L130 PetriNetUnfolder]: 10/120 cut-off events. [2023-08-31 20:50:41,858 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 20:50:41,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:41,858 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:50:41,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:41,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:41,859 INFO L85 PathProgramCache]: Analyzing trace with hash 372483470, now seen corresponding path program 1 times [2023-08-31 20:50:41,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:41,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425785092] [2023-08-31 20:50:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:41,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:41,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:41,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:41,901 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:41,901 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:41,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:50:41,902 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:41,902 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:41,903 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:41,903 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:50:41,937 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:50:41,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 490 transitions, 1024 flow [2023-08-31 20:50:42,212 INFO L130 PetriNetUnfolder]: 109/954 cut-off events. [2023-08-31 20:50:42,212 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:50:42,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 954 events. 109/954 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4795 event pairs, 6 based on Foata normal form. 0/783 useless extension candidates. Maximal degree in co-relation 664. Up to 32 conditions per place. [2023-08-31 20:50:42,230 INFO L82 GeneralOperation]: Start removeDead. Operand has 438 places, 490 transitions, 1024 flow [2023-08-31 20:50:42,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 438 places, 490 transitions, 1024 flow [2023-08-31 20:50:42,245 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:42,245 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 438 places, 490 transitions, 1024 flow [2023-08-31 20:50:42,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 438 places, 490 transitions, 1024 flow [2023-08-31 20:50:42,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 490 transitions, 1024 flow [2023-08-31 20:50:42,448 INFO L130 PetriNetUnfolder]: 109/954 cut-off events. [2023-08-31 20:50:42,448 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:50:42,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 954 events. 109/954 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4795 event pairs, 6 based on Foata normal form. 0/783 useless extension candidates. Maximal degree in co-relation 664. Up to 32 conditions per place. [2023-08-31 20:50:42,533 INFO L119 LiptonReduction]: Number of co-enabled transitions 162960 [2023-08-31 20:50:46,412 INFO L134 LiptonReduction]: Checked pairs total: 733603 [2023-08-31 20:50:46,413 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-08-31 20:50:46,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:46,415 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;@1a6727f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:46,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:46,437 INFO L130 PetriNetUnfolder]: 26/209 cut-off events. [2023-08-31 20:50:46,437 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:50:46,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:46,438 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:50:46,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:46,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1449725688, now seen corresponding path program 1 times [2023-08-31 20:50:46,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:46,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250503463] [2023-08-31 20:50:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:46,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:46,460 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:46,478 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:46,478 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:46,478 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:46,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:50:46,479 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:46,479 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:46,480 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:46,480 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:50:46,517 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:50:46,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 525 places, 589 transitions, 1238 flow [2023-08-31 20:50:46,946 INFO L130 PetriNetUnfolder]: 175/1444 cut-off events. [2023-08-31 20:50:46,946 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:50:46,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 1444 events. 175/1444 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 8030 event pairs, 23 based on Foata normal form. 0/1196 useless extension candidates. Maximal degree in co-relation 999. Up to 80 conditions per place. [2023-08-31 20:50:46,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 525 places, 589 transitions, 1238 flow [2023-08-31 20:50:47,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 525 places, 589 transitions, 1238 flow [2023-08-31 20:50:47,005 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:47,006 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 525 places, 589 transitions, 1238 flow [2023-08-31 20:50:47,006 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 525 places, 589 transitions, 1238 flow [2023-08-31 20:50:47,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 525 places, 589 transitions, 1238 flow [2023-08-31 20:50:47,367 INFO L130 PetriNetUnfolder]: 175/1444 cut-off events. [2023-08-31 20:50:47,367 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:50:47,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 1444 events. 175/1444 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 8030 event pairs, 23 based on Foata normal form. 0/1196 useless extension candidates. Maximal degree in co-relation 999. Up to 80 conditions per place. [2023-08-31 20:50:47,539 INFO L119 LiptonReduction]: Number of co-enabled transitions 252200 [2023-08-31 20:50:52,169 INFO L134 LiptonReduction]: Checked pairs total: 1299189 [2023-08-31 20:50:52,169 INFO L136 LiptonReduction]: Total number of compositions: 304 [2023-08-31 20:50:52,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:52,176 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;@1a6727f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:52,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:52,204 INFO L130 PetriNetUnfolder]: 43/301 cut-off events. [2023-08-31 20:50:52,205 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 20:50:52,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:52,205 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:50:52,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:52,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:52,206 INFO L85 PathProgramCache]: Analyzing trace with hash -962541784, now seen corresponding path program 1 times [2023-08-31 20:50:52,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:52,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553087223] [2023-08-31 20:50:52,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:52,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:52,251 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:52,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:52,286 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:52,287 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:52,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:50:52,289 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:52,291 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:52,291 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:52,291 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:50:52,336 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:50:52,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 612 places, 688 transitions, 1454 flow [2023-08-31 20:50:53,072 INFO L130 PetriNetUnfolder]: 305/2302 cut-off events. [2023-08-31 20:50:53,073 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:50:53,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2534 conditions, 2302 events. 305/2302 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 14460 event pairs, 72 based on Foata normal form. 0/1929 useless extension candidates. Maximal degree in co-relation 1543. Up to 192 conditions per place. [2023-08-31 20:50:53,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 612 places, 688 transitions, 1454 flow [2023-08-31 20:50:53,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 612 places, 688 transitions, 1454 flow [2023-08-31 20:50:53,169 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:53,169 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 612 places, 688 transitions, 1454 flow [2023-08-31 20:50:53,170 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 612 places, 688 transitions, 1454 flow [2023-08-31 20:50:53,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 612 places, 688 transitions, 1454 flow [2023-08-31 20:50:53,855 INFO L130 PetriNetUnfolder]: 305/2302 cut-off events. [2023-08-31 20:50:53,856 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:50:53,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2534 conditions, 2302 events. 305/2302 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 14460 event pairs, 72 based on Foata normal form. 0/1929 useless extension candidates. Maximal degree in co-relation 1543. Up to 192 conditions per place. [2023-08-31 20:50:54,158 INFO L119 LiptonReduction]: Number of co-enabled transitions 360840 [2023-08-31 20:50:58,867 INFO L134 LiptonReduction]: Checked pairs total: 1664176 [2023-08-31 20:50:58,867 INFO L136 LiptonReduction]: Total number of compositions: 341 [2023-08-31 20:50:58,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:58,869 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;@1a6727f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:58,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:58,914 INFO L130 PetriNetUnfolder]: 61/400 cut-off events. [2023-08-31 20:50:58,914 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-08-31 20:50:58,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:58,914 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:50:58,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:58,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:58,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1044907201, now seen corresponding path program 1 times [2023-08-31 20:50:58,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:58,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122010267] [2023-08-31 20:50:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:58,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:58,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:58,990 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:58,990 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:58,991 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:58,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:50:58,991 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:58,994 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:58,995 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:58,995 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:50:59,047 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:50:59,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 699 places, 787 transitions, 1672 flow [2023-08-31 20:51:00,414 INFO L130 PetriNetUnfolder]: 579/3912 cut-off events. [2023-08-31 20:51:00,414 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:51:00,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4410 conditions, 3912 events. 579/3912 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 28647 event pairs, 201 based on Foata normal form. 0/3318 useless extension candidates. Maximal degree in co-relation 2520. Up to 448 conditions per place. [2023-08-31 20:51:00,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 699 places, 787 transitions, 1672 flow [2023-08-31 20:51:00,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 699 places, 787 transitions, 1672 flow [2023-08-31 20:51:00,588 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:51:00,588 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 699 places, 787 transitions, 1672 flow [2023-08-31 20:51:00,588 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 699 places, 787 transitions, 1672 flow [2023-08-31 20:51:00,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 699 places, 787 transitions, 1672 flow [2023-08-31 20:51:01,759 INFO L130 PetriNetUnfolder]: 579/3912 cut-off events. [2023-08-31 20:51:01,759 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:51:01,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4410 conditions, 3912 events. 579/3912 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 28647 event pairs, 201 based on Foata normal form. 0/3318 useless extension candidates. Maximal degree in co-relation 2520. Up to 448 conditions per place. [2023-08-31 20:51:02,301 INFO L119 LiptonReduction]: Number of co-enabled transitions 488880 [2023-08-31 20:51:07,243 INFO L134 LiptonReduction]: Checked pairs total: 2293879 [2023-08-31 20:51:07,243 INFO L136 LiptonReduction]: Total number of compositions: 393 [2023-08-31 20:51:07,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:51:07,245 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;@1a6727f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:51:07,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:51:07,291 INFO L130 PetriNetUnfolder]: 81/507 cut-off events. [2023-08-31 20:51:07,291 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-08-31 20:51:07,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:51:07,291 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:51:07,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:51:07,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:51:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash -941492552, now seen corresponding path program 1 times [2023-08-31 20:51:07,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:51:07,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442321095] [2023-08-31 20:51:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:51:07,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:51:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:51:07,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:51:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:51:07,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:51:07,393 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:51:07,393 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:51:07,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:51:07,394 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:51:07,395 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:51:07,395 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:51:07,395 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:51:07,456 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:51:07,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 786 places, 886 transitions, 1892 flow [2023-08-31 20:51:10,205 INFO L130 PetriNetUnfolder]: 1173/7058 cut-off events. [2023-08-31 20:51:10,205 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:51:10,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8143 conditions, 7058 events. 1173/7058 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 60426 event pairs, 522 based on Foata normal form. 0/6051 useless extension candidates. Maximal degree in co-relation 4394. Up to 1024 conditions per place. [2023-08-31 20:51:10,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 786 places, 886 transitions, 1892 flow [2023-08-31 20:51:10,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 786 places, 886 transitions, 1892 flow [2023-08-31 20:51:10,503 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:51:10,503 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 786 places, 886 transitions, 1892 flow [2023-08-31 20:51:10,504 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 786 places, 886 transitions, 1892 flow [2023-08-31 20:51:10,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 786 places, 886 transitions, 1892 flow [2023-08-31 20:51:12,966 INFO L130 PetriNetUnfolder]: 1173/7058 cut-off events. [2023-08-31 20:51:12,966 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:51:13,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8143 conditions, 7058 events. 1173/7058 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 60426 event pairs, 522 based on Foata normal form. 0/6051 useless extension candidates. Maximal degree in co-relation 4394. Up to 1024 conditions per place. [2023-08-31 20:51:13,952 INFO L119 LiptonReduction]: Number of co-enabled transitions 636320 [2023-08-31 20:51:19,577 INFO L134 LiptonReduction]: Checked pairs total: 2970360 [2023-08-31 20:51:19,577 INFO L136 LiptonReduction]: Total number of compositions: 437 [2023-08-31 20:51:19,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:51:19,580 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;@1a6727f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:51:19,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:51:19,657 INFO L130 PetriNetUnfolder]: 106/626 cut-off events. [2023-08-31 20:51:19,658 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2023-08-31 20:51:19,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:51:19,658 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:51:19,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:51:19,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:51:19,659 INFO L85 PathProgramCache]: Analyzing trace with hash -158121031, now seen corresponding path program 1 times [2023-08-31 20:51:19,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:51:19,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650458008] [2023-08-31 20:51:19,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:51:19,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:51:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:51:19,682 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:51:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:51:19,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:51:19,701 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:51:19,701 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:51:19,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:51:19,701 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:51:19,702 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:51:19,702 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:51:19,702 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:51:19,787 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:51:19,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 873 places, 985 transitions, 2114 flow [2023-08-31 20:51:25,210 INFO L130 PetriNetUnfolder]: 2471/13340 cut-off events. [2023-08-31 20:51:25,210 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:51:25,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15717 conditions, 13340 events. 2471/13340 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 131920 event pairs, 1291 based on Foata normal form. 0/11536 useless extension candidates. Maximal degree in co-relation 8125. Up to 2304 conditions per place. [2023-08-31 20:51:25,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 873 places, 985 transitions, 2114 flow [2023-08-31 20:51:25,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 873 places, 985 transitions, 2114 flow [2023-08-31 20:51:25,899 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:51:25,900 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 873 places, 985 transitions, 2114 flow [2023-08-31 20:51:25,900 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 873 places, 985 transitions, 2114 flow [2023-08-31 20:51:25,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 873 places, 985 transitions, 2114 flow [2023-08-31 20:51:31,147 INFO L130 PetriNetUnfolder]: 2471/13340 cut-off events. [2023-08-31 20:51:31,147 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:51:31,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15717 conditions, 13340 events. 2471/13340 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 131920 event pairs, 1291 based on Foata normal form. 0/11536 useless extension candidates. Maximal degree in co-relation 8125. Up to 2304 conditions per place. [2023-08-31 20:51:33,371 INFO L119 LiptonReduction]: Number of co-enabled transitions 803160 [2023-08-31 20:51:39,159 INFO L134 LiptonReduction]: Checked pairs total: 3773942 [2023-08-31 20:51:39,159 INFO L136 LiptonReduction]: Total number of compositions: 487 [2023-08-31 20:51:39,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:51:39,162 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;@1a6727f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:51:39,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:51:39,281 INFO L130 PetriNetUnfolder]: 133/754 cut-off events. [2023-08-31 20:51:39,281 INFO L131 PetriNetUnfolder]: For 214/214 co-relation queries the response was YES. [2023-08-31 20:51:39,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:51:39,281 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:51:39,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:51:39,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:51:39,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1959936263, now seen corresponding path program 1 times [2023-08-31 20:51:39,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:51:39,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794136421] [2023-08-31 20:51:39,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:51:39,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:51:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:51:39,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:51:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:51:39,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:51:39,328 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:51:39,328 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:51:39,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:51:39,328 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:51:39,329 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:51:39,329 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:51:39,329 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:51:39,391 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:51:39,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 960 places, 1084 transitions, 2338 flow [2023-08-31 20:51:51,601 INFO L130 PetriNetUnfolder]: 5305/26022 cut-off events. [2023-08-31 20:51:51,602 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:51:53,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31228 conditions, 26022 events. 5305/26022 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 291267 event pairs, 3084 based on Foata normal form. 0/22653 useless extension candidates. Maximal degree in co-relation 15697. Up to 5120 conditions per place. [2023-08-31 20:51:53,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 960 places, 1084 transitions, 2338 flow [2023-08-31 20:51:53,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 960 places, 1084 transitions, 2338 flow [2023-08-31 20:51:53,839 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:51:53,839 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 960 places, 1084 transitions, 2338 flow [2023-08-31 20:51:53,839 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 960 places, 1084 transitions, 2338 flow [2023-08-31 20:51:53,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 960 places, 1084 transitions, 2338 flow [2023-08-31 20:52:05,832 INFO L130 PetriNetUnfolder]: 5305/26022 cut-off events. [2023-08-31 20:52:05,832 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:52:07,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31228 conditions, 26022 events. 5305/26022 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 291267 event pairs, 3084 based on Foata normal form. 0/22653 useless extension candidates. Maximal degree in co-relation 15697. Up to 5120 conditions per place. [2023-08-31 20:52:11,114 INFO L119 LiptonReduction]: Number of co-enabled transitions 989400 [2023-08-31 20:52:17,745 INFO L134 LiptonReduction]: Checked pairs total: 4700770 [2023-08-31 20:52:17,745 INFO L136 LiptonReduction]: Total number of compositions: 526 [2023-08-31 20:52:17,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:52:17,747 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;@1a6727f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:52:17,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:52:17,881 INFO L130 PetriNetUnfolder]: 166/902 cut-off events. [2023-08-31 20:52:17,881 INFO L131 PetriNetUnfolder]: For 302/302 co-relation queries the response was YES. [2023-08-31 20:52:17,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:52:17,881 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:52:17,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:52:17,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:52:17,882 INFO L85 PathProgramCache]: Analyzing trace with hash -269792568, now seen corresponding path program 1 times [2023-08-31 20:52:17,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:52:17,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92855409] [2023-08-31 20:52:17,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:52:17,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:52:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:17,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:52:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:17,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:52:17,973 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:52:17,973 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:52:17,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:52:17,973 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:52:17,974 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:52:17,974 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:52:17,974 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:52:18,040 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:52:18,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1047 places, 1183 transitions, 2564 flow [2023-08-31 20:52:48,017 INFO L130 PetriNetUnfolder]: 11467/51760 cut-off events. [2023-08-31 20:52:48,017 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:52:54,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63124 conditions, 51760 events. 11467/51760 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 650127 event pairs, 7181 based on Foata normal form. 0/45290 useless extension candidates. Maximal degree in co-relation 31206. Up to 11264 conditions per place. [2023-08-31 20:52:54,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 1047 places, 1183 transitions, 2564 flow [2023-08-31 20:52:56,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1047 places, 1183 transitions, 2564 flow [2023-08-31 20:52:56,333 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:52:56,333 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1047 places, 1183 transitions, 2564 flow [2023-08-31 20:52:56,334 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1047 places, 1183 transitions, 2564 flow [2023-08-31 20:52:56,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1047 places, 1183 transitions, 2564 flow [2023-08-31 20:53:22,726 INFO L130 PetriNetUnfolder]: 11467/51760 cut-off events. [2023-08-31 20:53:22,726 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:53:27,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63124 conditions, 51760 events. 11467/51760 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 650127 event pairs, 7181 based on Foata normal form. 0/45290 useless extension candidates. Maximal degree in co-relation 31206. Up to 11264 conditions per place. [2023-08-31 20:53:35,568 INFO L119 LiptonReduction]: Number of co-enabled transitions 1195040 [2023-08-31 20:53:42,399 INFO L134 LiptonReduction]: Checked pairs total: 5710784 [2023-08-31 20:53:42,399 INFO L136 LiptonReduction]: Total number of compositions: 571 [2023-08-31 20:53:42,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:42,401 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;@1a6727f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:42,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:42,562 INFO L130 PetriNetUnfolder]: 209/1080 cut-off events. [2023-08-31 20:53:42,562 INFO L131 PetriNetUnfolder]: For 418/418 co-relation queries the response was YES. [2023-08-31 20:53:42,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:42,562 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:53:42,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:42,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:42,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1865387145, now seen corresponding path program 1 times [2023-08-31 20:53:42,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:42,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555304839] [2023-08-31 20:53:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:42,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:42,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:42,611 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:42,611 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:42,611 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:42,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:53:42,612 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:42,612 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:42,612 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:42,612 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:53:42,676 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:53:42,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1134 places, 1282 transitions, 2792 flow [2023-08-31 20:54:42,937 INFO L130 PetriNetUnfolder]: 24797/104122 cut-off events. [2023-08-31 20:54:42,937 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:54:59,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128813 conditions, 104122 events. 24797/104122 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1689. Compared 1426219 event pairs, 16398 based on Foata normal form. 0/91479 useless extension candidates. Maximal degree in co-relation 63100. Up to 24576 conditions per place. [2023-08-31 20:54:59,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 1134 places, 1282 transitions, 2792 flow [2023-08-31 20:55:03,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1134 places, 1282 transitions, 2792 flow [2023-08-31 20:55:03,211 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:03,211 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1134 places, 1282 transitions, 2792 flow [2023-08-31 20:55:03,211 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1134 places, 1282 transitions, 2792 flow [2023-08-31 20:55:03,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1134 places, 1282 transitions, 2792 flow [2023-08-31 20:56:02,237 INFO L130 PetriNetUnfolder]: 24797/104122 cut-off events. [2023-08-31 20:56:02,237 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:56:18,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128813 conditions, 104122 events. 24797/104122 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1689. Compared 1426219 event pairs, 16398 based on Foata normal form. 0/91479 useless extension candidates. Maximal degree in co-relation 63100. Up to 24576 conditions per place. [2023-08-31 20:56:46,858 INFO L119 LiptonReduction]: Number of co-enabled transitions 1420080 [2023-08-31 20:56:54,147 INFO L134 LiptonReduction]: Checked pairs total: 6832642 [2023-08-31 20:56:54,148 INFO L136 LiptonReduction]: Total number of compositions: 617 [2023-08-31 20:56:54,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:54,150 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;@1a6727f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:54,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:54,384 INFO L130 PetriNetUnfolder]: 268/1300 cut-off events. [2023-08-31 20:56:54,384 INFO L131 PetriNetUnfolder]: For 572/572 co-relation queries the response was YES. [2023-08-31 20:56:54,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:54,385 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:56:54,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:54,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:54,385 INFO L85 PathProgramCache]: Analyzing trace with hash -460368725, now seen corresponding path program 1 times [2023-08-31 20:56:54,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:54,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287586972] [2023-08-31 20:56:54,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:54,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:54,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:54,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:54,434 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:54,434 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:54,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 20:56:54,434 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:54,435 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:54,435 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:54,435 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 20:56:54,503 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 20:56:54,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1221 places, 1381 transitions, 3022 flow