./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_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_11-ptr_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 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --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 20:45:07,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:45:07,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:45:07,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:45:07,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:45:07,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:45:07,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:45:07,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:45:07,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:45:07,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:45:07,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:45:07,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:45:07,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:45:07,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:45:07,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:45:07,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:45:07,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:45:07,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:45:07,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:45:07,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:45:07,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:45:07,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:45:07,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:45:07,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:45:07,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:45:07,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:45:07,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:45:07,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:45:07,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:45:07,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:45:07,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:45:07,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:45:07,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:45:07,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:45:07,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:45:07,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:45:07,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:45:07,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:45:07,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:45:07,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:45:07,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:45:07,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:45:07,526 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:45:07,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:45:07,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:45:07,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:45:07,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:45:07,528 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:45:07,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:45:07,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:45:07,529 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:45:07,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:45:07,530 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:45:07,530 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:45:07,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:45:07,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:45:07,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:45:07,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:45:07,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:45:07,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:45:07,531 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:45:07,531 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:45:07,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:45:07,531 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:45:07,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:45:07,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:45:07,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:45:07,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:45:07,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:45:07,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:45:07,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:45:07,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:45:07,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:45:07,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:45:07,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:45:07,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:45:07,533 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:45:07,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:45:07,533 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:45:07,534 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:45:07,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:45:07,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:45:07,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:45:07,779 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:45:07,779 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:45:07,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-08-31 20:45:08,595 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:45:08,818 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:45:08,818 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-08-31 20:45:08,833 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8008271ea/7b32447f552148079b4a791b74ddf524/FLAG211532a03 [2023-08-31 20:45:08,851 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8008271ea/7b32447f552148079b4a791b74ddf524 [2023-08-31 20:45:08,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:45:08,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:45:08,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:45:08,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:45:08,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:45:08,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:45:08" (1/1) ... [2023-08-31 20:45:08,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ba0036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:08, skipping insertion in model container [2023-08-31 20:45:08,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:45:08" (1/1) ... [2023-08-31 20:45:08,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:45:08,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:45:09,134 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_11-ptr_racing.i[30176,30189] [2023-08-31 20:45:09,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:45:09,169 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:45:09,207 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_11-ptr_racing.i[30176,30189] [2023-08-31 20:45:09,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:45:09,252 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:45:09,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:09 WrapperNode [2023-08-31 20:45:09,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:45:09,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:45:09,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:45:09,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:45:09,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:09" (1/1) ... [2023-08-31 20:45:09,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:09" (1/1) ... [2023-08-31 20:45:09,306 INFO L138 Inliner]: procedures = 170, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-08-31 20:45:09,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:45:09,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:45:09,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:45:09,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:45:09,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:09" (1/1) ... [2023-08-31 20:45:09,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:09" (1/1) ... [2023-08-31 20:45:09,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:09" (1/1) ... [2023-08-31 20:45:09,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:09" (1/1) ... [2023-08-31 20:45:09,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:09" (1/1) ... [2023-08-31 20:45:09,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:09" (1/1) ... [2023-08-31 20:45:09,341 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:09" (1/1) ... [2023-08-31 20:45:09,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:09" (1/1) ... [2023-08-31 20:45:09,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:45:09,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:45:09,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:45:09,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:45:09,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:09" (1/1) ... [2023-08-31 20:45:09,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:45:09,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:45:09,374 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 20:45:09,380 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 20:45:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:45:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:45:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:45:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:45:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:45:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:45:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:45:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:45:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:45:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:45:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:45:09,396 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 20:45:09,548 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:45:09,549 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:45:09,767 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:45:09,772 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:45:09,772 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-31 20:45:09,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:45:09 BoogieIcfgContainer [2023-08-31 20:45:09,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:45:09,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:45:09,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:45:09,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:45:09,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:45:08" (1/3) ... [2023-08-31 20:45:09,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a63a492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:45:09, skipping insertion in model container [2023-08-31 20:45:09,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:45:09" (2/3) ... [2023-08-31 20:45:09,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a63a492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:45:09, skipping insertion in model container [2023-08-31 20:45:09,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:45:09" (3/3) ... [2023-08-31 20:45:09,778 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2023-08-31 20:45:09,783 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:45:09,789 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:45:09,789 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-31 20:45:09,789 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:45:09,852 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:45:09,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 154 transitions, 316 flow [2023-08-31 20:45:09,962 INFO L130 PetriNetUnfolder]: 17/200 cut-off events. [2023-08-31 20:45:09,963 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:45:09,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 200 events. 17/200 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 584 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 112. Up to 4 conditions per place. [2023-08-31 20:45:09,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 154 transitions, 316 flow [2023-08-31 20:45:09,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 149 transitions, 303 flow [2023-08-31 20:45:09,976 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:09,985 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 149 transitions, 303 flow [2023-08-31 20:45:09,988 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 149 transitions, 303 flow [2023-08-31 20:45:09,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 149 transitions, 303 flow [2023-08-31 20:45:10,024 INFO L130 PetriNetUnfolder]: 16/195 cut-off events. [2023-08-31 20:45:10,024 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:45:10,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 195 events. 16/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 556 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 112. Up to 4 conditions per place. [2023-08-31 20:45:10,029 INFO L119 LiptonReduction]: Number of co-enabled transitions 6344 [2023-08-31 20:45:12,620 INFO L134 LiptonReduction]: Checked pairs total: 25657 [2023-08-31 20:45:12,620 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-08-31 20:45:12,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:12,632 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;@4721a9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:12,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:12,635 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2023-08-31 20:45:12,635 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:45:12,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:12,636 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:45:12,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:12,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:12,639 INFO L85 PathProgramCache]: Analyzing trace with hash -990402413, now seen corresponding path program 1 times [2023-08-31 20:45:12,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:12,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956656199] [2023-08-31 20:45:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:12,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:12,766 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:12,808 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:12,809 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:12,810 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:12,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:45:12,812 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:12,817 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:12,817 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:12,817 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:45:12,849 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:45:12,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 217 transitions, 452 flow [2023-08-31 20:45:12,917 INFO L130 PetriNetUnfolder]: 31/339 cut-off events. [2023-08-31 20:45:12,917 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:45:12,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 339 events. 31/339 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1266 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 202. Up to 8 conditions per place. [2023-08-31 20:45:12,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 217 transitions, 452 flow [2023-08-31 20:45:12,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 217 transitions, 452 flow [2023-08-31 20:45:12,921 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:12,921 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 217 transitions, 452 flow [2023-08-31 20:45:12,922 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 217 transitions, 452 flow [2023-08-31 20:45:12,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 217 transitions, 452 flow [2023-08-31 20:45:12,947 INFO L130 PetriNetUnfolder]: 31/339 cut-off events. [2023-08-31 20:45:12,947 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:45:12,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 339 events. 31/339 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1266 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 202. Up to 8 conditions per place. [2023-08-31 20:45:12,958 INFO L119 LiptonReduction]: Number of co-enabled transitions 21472 [2023-08-31 20:45:15,494 INFO L134 LiptonReduction]: Checked pairs total: 99015 [2023-08-31 20:45:15,495 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-08-31 20:45:15,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:15,497 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;@4721a9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:15,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:15,502 INFO L130 PetriNetUnfolder]: 4/63 cut-off events. [2023-08-31 20:45:15,502 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 20:45:15,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:15,502 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:45:15,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:15,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1605838753, now seen corresponding path program 1 times [2023-08-31 20:45:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:15,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027304001] [2023-08-31 20:45:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:15,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:15,527 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:15,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:15,542 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:15,542 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:15,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:45:15,543 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:15,543 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:15,543 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:15,543 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:45:15,563 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:45:15,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 280 transitions, 590 flow [2023-08-31 20:45:15,617 INFO L130 PetriNetUnfolder]: 50/521 cut-off events. [2023-08-31 20:45:15,617 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:45:15,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 521 events. 50/521 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2203 event pairs, 1 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 347. Up to 16 conditions per place. [2023-08-31 20:45:15,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 280 transitions, 590 flow [2023-08-31 20:45:15,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 280 transitions, 590 flow [2023-08-31 20:45:15,625 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:15,625 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 280 transitions, 590 flow [2023-08-31 20:45:15,625 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 280 transitions, 590 flow [2023-08-31 20:45:15,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 280 transitions, 590 flow [2023-08-31 20:45:15,673 INFO L130 PetriNetUnfolder]: 50/521 cut-off events. [2023-08-31 20:45:15,674 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:45:15,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 521 events. 50/521 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2203 event pairs, 1 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 347. Up to 16 conditions per place. [2023-08-31 20:45:15,690 INFO L119 LiptonReduction]: Number of co-enabled transitions 43920 [2023-08-31 20:45:18,358 INFO L134 LiptonReduction]: Checked pairs total: 240196 [2023-08-31 20:45:18,358 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-31 20:45:18,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:18,360 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;@4721a9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:18,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:18,366 INFO L130 PetriNetUnfolder]: 8/118 cut-off events. [2023-08-31 20:45:18,366 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 20:45:18,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:18,366 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:45:18,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:18,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:18,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1778349707, now seen corresponding path program 1 times [2023-08-31 20:45:18,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:18,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640129392] [2023-08-31 20:45:18,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:18,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:18,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:18,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:18,417 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:18,417 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:18,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:45:18,417 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:18,418 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:18,418 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:18,418 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:45:18,438 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:45:18,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 343 transitions, 730 flow [2023-08-31 20:45:18,537 INFO L130 PetriNetUnfolder]: 81/791 cut-off events. [2023-08-31 20:45:18,537 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:45:18,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 791 events. 81/791 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3680 event pairs, 6 based on Foata normal form. 0/673 useless extension candidates. Maximal degree in co-relation 541. Up to 32 conditions per place. [2023-08-31 20:45:18,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 343 transitions, 730 flow [2023-08-31 20:45:18,550 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 319 places, 343 transitions, 730 flow [2023-08-31 20:45:18,550 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:18,550 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 319 places, 343 transitions, 730 flow [2023-08-31 20:45:18,551 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 319 places, 343 transitions, 730 flow [2023-08-31 20:45:18,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 343 transitions, 730 flow [2023-08-31 20:45:18,651 INFO L130 PetriNetUnfolder]: 81/791 cut-off events. [2023-08-31 20:45:18,652 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:45:18,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 791 events. 81/791 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3680 event pairs, 6 based on Foata normal form. 0/673 useless extension candidates. Maximal degree in co-relation 541. Up to 32 conditions per place. [2023-08-31 20:45:18,681 INFO L119 LiptonReduction]: Number of co-enabled transitions 74176 [2023-08-31 20:45:21,567 INFO L134 LiptonReduction]: Checked pairs total: 378027 [2023-08-31 20:45:21,567 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-08-31 20:45:21,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:21,570 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;@4721a9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:21,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:21,581 INFO L130 PetriNetUnfolder]: 15/183 cut-off events. [2023-08-31 20:45:21,581 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:45:21,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:21,581 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:45:21,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:21,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash -683882158, now seen corresponding path program 1 times [2023-08-31 20:45:21,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:21,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455529361] [2023-08-31 20:45:21,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:21,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:21,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:21,651 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:21,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:21,657 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:21,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:45:21,657 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:21,657 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:21,657 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:21,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:45:21,694 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:45:21,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 406 transitions, 872 flow [2023-08-31 20:45:21,896 INFO L130 PetriNetUnfolder]: 140/1241 cut-off events. [2023-08-31 20:45:21,896 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:45:21,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 1241 events. 140/1241 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6570 event pairs, 23 based on Foata normal form. 0/1059 useless extension candidates. Maximal degree in co-relation 836. Up to 80 conditions per place. [2023-08-31 20:45:21,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 406 transitions, 872 flow [2023-08-31 20:45:21,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 377 places, 406 transitions, 872 flow [2023-08-31 20:45:21,926 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:21,926 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 377 places, 406 transitions, 872 flow [2023-08-31 20:45:21,926 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 377 places, 406 transitions, 872 flow [2023-08-31 20:45:21,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 406 transitions, 872 flow [2023-08-31 20:45:22,100 INFO L130 PetriNetUnfolder]: 140/1241 cut-off events. [2023-08-31 20:45:22,101 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:45:22,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 1241 events. 140/1241 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6570 event pairs, 23 based on Foata normal form. 0/1059 useless extension candidates. Maximal degree in co-relation 836. Up to 80 conditions per place. [2023-08-31 20:45:22,151 INFO L119 LiptonReduction]: Number of co-enabled transitions 112240 [2023-08-31 20:45:25,149 INFO L134 LiptonReduction]: Checked pairs total: 585980 [2023-08-31 20:45:25,149 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-08-31 20:45:25,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:25,154 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;@4721a9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:25,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:25,172 INFO L130 PetriNetUnfolder]: 24/257 cut-off events. [2023-08-31 20:45:25,172 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 20:45:25,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:25,173 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:45:25,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:25,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:25,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1669504584, now seen corresponding path program 1 times [2023-08-31 20:45:25,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:25,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816758850] [2023-08-31 20:45:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:25,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:25,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:25,245 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:25,245 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:25,245 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:25,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:45:25,246 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:25,246 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:25,246 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:25,246 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:45:25,281 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:45:25,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 469 transitions, 1016 flow [2023-08-31 20:45:25,630 INFO L130 PetriNetUnfolder]: 263/2059 cut-off events. [2023-08-31 20:45:25,630 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:45:25,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2291 conditions, 2059 events. 263/2059 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 12894 event pairs, 72 based on Foata normal form. 0/1765 useless extension candidates. Maximal degree in co-relation 1340. Up to 192 conditions per place. [2023-08-31 20:45:25,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 435 places, 469 transitions, 1016 flow [2023-08-31 20:45:25,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 435 places, 469 transitions, 1016 flow [2023-08-31 20:45:25,671 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:25,672 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 435 places, 469 transitions, 1016 flow [2023-08-31 20:45:25,672 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 435 places, 469 transitions, 1016 flow [2023-08-31 20:45:25,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 469 transitions, 1016 flow [2023-08-31 20:45:26,002 INFO L130 PetriNetUnfolder]: 263/2059 cut-off events. [2023-08-31 20:45:26,002 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:45:26,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2291 conditions, 2059 events. 263/2059 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 12894 event pairs, 72 based on Foata normal form. 0/1765 useless extension candidates. Maximal degree in co-relation 1340. Up to 192 conditions per place. [2023-08-31 20:45:26,100 INFO L119 LiptonReduction]: Number of co-enabled transitions 158112 [2023-08-31 20:45:29,628 INFO L134 LiptonReduction]: Checked pairs total: 828310 [2023-08-31 20:45:29,628 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-08-31 20:45:29,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:29,630 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;@4721a9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:29,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:29,658 INFO L130 PetriNetUnfolder]: 33/336 cut-off events. [2023-08-31 20:45:29,658 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-31 20:45:29,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:29,658 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:45:29,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:29,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:29,659 INFO L85 PathProgramCache]: Analyzing trace with hash -916814353, now seen corresponding path program 1 times [2023-08-31 20:45:29,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:29,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871451258] [2023-08-31 20:45:29,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:29,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:29,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:29,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:29,713 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:29,713 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:29,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:45:29,713 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:29,715 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:29,716 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:29,716 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:45:29,748 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:45:29,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 493 places, 532 transitions, 1162 flow [2023-08-31 20:45:30,483 INFO L130 PetriNetUnfolder]: 530/3629 cut-off events. [2023-08-31 20:45:30,483 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:45:30,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4127 conditions, 3629 events. 530/3629 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 26706 event pairs, 201 based on Foata normal form. 0/3127 useless extension candidates. Maximal degree in co-relation 2277. Up to 448 conditions per place. [2023-08-31 20:45:30,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 493 places, 532 transitions, 1162 flow [2023-08-31 20:45:30,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 493 places, 532 transitions, 1162 flow [2023-08-31 20:45:30,628 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:30,628 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 493 places, 532 transitions, 1162 flow [2023-08-31 20:45:30,628 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 493 places, 532 transitions, 1162 flow [2023-08-31 20:45:30,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 493 places, 532 transitions, 1162 flow [2023-08-31 20:45:31,283 INFO L130 PetriNetUnfolder]: 530/3629 cut-off events. [2023-08-31 20:45:31,283 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:45:31,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4127 conditions, 3629 events. 530/3629 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 26706 event pairs, 201 based on Foata normal form. 0/3127 useless extension candidates. Maximal degree in co-relation 2277. Up to 448 conditions per place. [2023-08-31 20:45:31,591 INFO L119 LiptonReduction]: Number of co-enabled transitions 211792 [2023-08-31 20:45:35,112 INFO L134 LiptonReduction]: Checked pairs total: 1127301 [2023-08-31 20:45:35,112 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-08-31 20:45:35,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:35,113 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;@4721a9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:35,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:35,144 INFO L130 PetriNetUnfolder]: 43/431 cut-off events. [2023-08-31 20:45:35,145 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2023-08-31 20:45:35,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:35,145 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:45:35,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:35,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:35,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2102427884, now seen corresponding path program 1 times [2023-08-31 20:45:35,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:35,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672873795] [2023-08-31 20:45:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:35,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:35,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:35,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:35,175 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:35,175 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:35,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:45:35,175 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:35,175 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:35,176 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:35,176 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:45:35,207 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:45:35,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 551 places, 595 transitions, 1310 flow [2023-08-31 20:45:36,593 INFO L130 PetriNetUnfolder]: 1117/6735 cut-off events. [2023-08-31 20:45:36,594 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:45:36,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7820 conditions, 6735 events. 1117/6735 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 58281 event pairs, 522 based on Foata normal form. 0/5833 useless extension candidates. Maximal degree in co-relation 4111. Up to 1024 conditions per place. [2023-08-31 20:45:36,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 551 places, 595 transitions, 1310 flow [2023-08-31 20:45:36,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 551 places, 595 transitions, 1310 flow [2023-08-31 20:45:36,919 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:36,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 551 places, 595 transitions, 1310 flow [2023-08-31 20:45:36,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 551 places, 595 transitions, 1310 flow [2023-08-31 20:45:36,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 551 places, 595 transitions, 1310 flow [2023-08-31 20:45:38,371 INFO L130 PetriNetUnfolder]: 1117/6735 cut-off events. [2023-08-31 20:45:38,371 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:45:38,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7820 conditions, 6735 events. 1117/6735 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 58281 event pairs, 522 based on Foata normal form. 0/5833 useless extension candidates. Maximal degree in co-relation 4111. Up to 1024 conditions per place. [2023-08-31 20:45:38,846 INFO L119 LiptonReduction]: Number of co-enabled transitions 273280 [2023-08-31 20:45:43,038 INFO L134 LiptonReduction]: Checked pairs total: 1655949 [2023-08-31 20:45:43,038 INFO L136 LiptonReduction]: Total number of compositions: 272 [2023-08-31 20:45:43,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:43,040 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;@4721a9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:43,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:43,143 INFO L130 PetriNetUnfolder]: 55/540 cut-off events. [2023-08-31 20:45:43,144 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2023-08-31 20:45:43,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:43,144 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:45:43,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:43,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:43,144 INFO L85 PathProgramCache]: Analyzing trace with hash -110424124, now seen corresponding path program 1 times [2023-08-31 20:45:43,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:43,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700094177] [2023-08-31 20:45:43,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:43,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:43,166 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:43,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:43,183 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:43,183 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:43,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:45:43,183 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:43,185 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:43,185 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:43,187 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:45:43,227 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:45:43,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 609 places, 658 transitions, 1460 flow [2023-08-31 20:45:46,432 INFO L130 PetriNetUnfolder]: 2408/12977 cut-off events. [2023-08-31 20:45:46,432 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:45:46,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15354 conditions, 12977 events. 2408/12977 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 129850 event pairs, 1291 based on Foata normal form. 0/11291 useless extension candidates. Maximal degree in co-relation 7802. Up to 2304 conditions per place. [2023-08-31 20:45:46,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 609 places, 658 transitions, 1460 flow [2023-08-31 20:45:46,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 609 places, 658 transitions, 1460 flow [2023-08-31 20:45:46,831 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:46,831 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 609 places, 658 transitions, 1460 flow [2023-08-31 20:45:46,831 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 609 places, 658 transitions, 1460 flow [2023-08-31 20:45:46,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 609 places, 658 transitions, 1460 flow [2023-08-31 20:45:50,019 INFO L130 PetriNetUnfolder]: 2408/12977 cut-off events. [2023-08-31 20:45:50,019 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:45:50,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15354 conditions, 12977 events. 2408/12977 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 129850 event pairs, 1291 based on Foata normal form. 0/11291 useless extension candidates. Maximal degree in co-relation 7802. Up to 2304 conditions per place. [2023-08-31 20:45:51,042 INFO L119 LiptonReduction]: Number of co-enabled transitions 342576 [2023-08-31 20:45:55,403 INFO L134 LiptonReduction]: Checked pairs total: 2090142 [2023-08-31 20:45:55,403 INFO L136 LiptonReduction]: Total number of compositions: 290 [2023-08-31 20:45:55,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:55,405 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;@4721a9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:55,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:55,466 INFO L130 PetriNetUnfolder]: 70/670 cut-off events. [2023-08-31 20:45:55,466 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2023-08-31 20:45:55,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:55,466 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:45:55,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:55,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:55,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1500337312, now seen corresponding path program 1 times [2023-08-31 20:45:55,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:55,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722775112] [2023-08-31 20:45:55,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:55,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:55,492 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:55,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:55,504 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:55,504 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:55,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:45:55,505 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:55,505 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:55,505 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:55,505 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:45:55,542 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:45:55,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 667 places, 721 transitions, 1612 flow [2023-08-31 20:46:02,546 INFO L130 PetriNetUnfolder]: 5235/25619 cut-off events. [2023-08-31 20:46:02,546 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:46:03,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30825 conditions, 25619 events. 5235/25619 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 289943 event pairs, 3084 based on Foata normal form. 0/22381 useless extension candidates. Maximal degree in co-relation 15334. Up to 5120 conditions per place. [2023-08-31 20:46:03,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 667 places, 721 transitions, 1612 flow [2023-08-31 20:46:03,641 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 667 places, 721 transitions, 1612 flow [2023-08-31 20:46:03,642 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:03,642 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 667 places, 721 transitions, 1612 flow [2023-08-31 20:46:03,642 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 667 places, 721 transitions, 1612 flow [2023-08-31 20:46:03,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 667 places, 721 transitions, 1612 flow [2023-08-31 20:46:10,822 INFO L130 PetriNetUnfolder]: 5235/25619 cut-off events. [2023-08-31 20:46:10,822 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:46:11,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30825 conditions, 25619 events. 5235/25619 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 289943 event pairs, 3084 based on Foata normal form. 0/22381 useless extension candidates. Maximal degree in co-relation 15334. Up to 5120 conditions per place. [2023-08-31 20:46:13,398 INFO L119 LiptonReduction]: Number of co-enabled transitions 419680 [2023-08-31 20:46:17,605 INFO L134 LiptonReduction]: Checked pairs total: 2577356 [2023-08-31 20:46:17,605 INFO L136 LiptonReduction]: Total number of compositions: 321 [2023-08-31 20:46:17,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:46:17,606 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;@4721a9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:46:17,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:46:17,736 INFO L130 PetriNetUnfolder]: 90/838 cut-off events. [2023-08-31 20:46:17,736 INFO L131 PetriNetUnfolder]: For 277/277 co-relation queries the response was YES. [2023-08-31 20:46:17,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:46:17,736 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:46:17,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:46:17,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:46:17,737 INFO L85 PathProgramCache]: Analyzing trace with hash -453666671, now seen corresponding path program 1 times [2023-08-31 20:46:17,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:46:17,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272468683] [2023-08-31 20:46:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:46:17,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:46:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:17,754 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:46:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:17,767 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:46:17,768 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:46:17,768 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:46:17,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:46:17,768 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:46:17,768 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:46:17,768 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:46:17,769 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:46:17,808 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:46:17,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 725 places, 784 transitions, 1766 flow [2023-08-31 20:46:33,467 INFO L130 PetriNetUnfolder]: 11390/51317 cut-off events. [2023-08-31 20:46:33,467 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:46:35,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62681 conditions, 51317 events. 11390/51317 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 650332 event pairs, 7181 based on Foata normal form. 0/44991 useless extension candidates. Maximal degree in co-relation 30803. Up to 11264 conditions per place. [2023-08-31 20:46:35,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 725 places, 784 transitions, 1766 flow [2023-08-31 20:46:36,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 725 places, 784 transitions, 1766 flow [2023-08-31 20:46:36,066 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:36,066 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 725 places, 784 transitions, 1766 flow [2023-08-31 20:46:36,066 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 725 places, 784 transitions, 1766 flow [2023-08-31 20:46:36,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 725 places, 784 transitions, 1766 flow [2023-08-31 20:46:51,638 INFO L130 PetriNetUnfolder]: 11390/51317 cut-off events. [2023-08-31 20:46:51,639 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:46:54,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62681 conditions, 51317 events. 11390/51317 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 650332 event pairs, 7181 based on Foata normal form. 0/44991 useless extension candidates. Maximal degree in co-relation 30803. Up to 11264 conditions per place. [2023-08-31 20:46:58,791 INFO L119 LiptonReduction]: Number of co-enabled transitions 504592 [2023-08-31 20:47:03,237 INFO L134 LiptonReduction]: Checked pairs total: 2742137 [2023-08-31 20:47:03,237 INFO L136 LiptonReduction]: Total number of compositions: 342 [2023-08-31 20:47:03,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:03,238 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;@4721a9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:03,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:47:03,352 INFO L130 PetriNetUnfolder]: 119/1047 cut-off events. [2023-08-31 20:47:03,353 INFO L131 PetriNetUnfolder]: For 382/382 co-relation queries the response was YES. [2023-08-31 20:47:03,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:03,353 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:47:03,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:03,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:03,353 INFO L85 PathProgramCache]: Analyzing trace with hash -157316258, now seen corresponding path program 1 times [2023-08-31 20:47:03,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:03,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362941624] [2023-08-31 20:47:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:03,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:03,371 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:03,386 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:03,386 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:03,386 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:47:03,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:47:03,386 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:03,387 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:47:03,387 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:03,387 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:47:03,457 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:47:03,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 783 places, 847 transitions, 1922 flow [2023-08-31 20:47:37,036 INFO L130 PetriNetUnfolder]: 24713/103639 cut-off events. [2023-08-31 20:47:37,037 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:47:45,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128330 conditions, 103639 events. 24713/103639 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 1442665 event pairs, 16398 based on Foata normal form. 0/91153 useless extension candidates. Maximal degree in co-relation 62657. Up to 24576 conditions per place. [2023-08-31 20:47:45,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 783 places, 847 transitions, 1922 flow [2023-08-31 20:47:46,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 783 places, 847 transitions, 1922 flow [2023-08-31 20:47:46,849 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:46,849 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 783 places, 847 transitions, 1922 flow [2023-08-31 20:47:46,849 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 783 places, 847 transitions, 1922 flow [2023-08-31 20:47:46,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 783 places, 847 transitions, 1922 flow [2023-08-31 20:48:20,423 INFO L130 PetriNetUnfolder]: 24713/103639 cut-off events. [2023-08-31 20:48:20,423 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:48:28,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128330 conditions, 103639 events. 24713/103639 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 1442665 event pairs, 16398 based on Foata normal form. 0/91153 useless extension candidates. Maximal degree in co-relation 62657. Up to 24576 conditions per place. [2023-08-31 20:48:39,928 INFO L119 LiptonReduction]: Number of co-enabled transitions 597312 [2023-08-31 20:48:44,497 INFO L134 LiptonReduction]: Checked pairs total: 3263258 [2023-08-31 20:48:44,497 INFO L136 LiptonReduction]: Total number of compositions: 367 [2023-08-31 20:48:44,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:48:44,499 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;@4721a9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:48:44,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:48:44,668 INFO L130 PetriNetUnfolder]: 163/1332 cut-off events. [2023-08-31 20:48:44,668 INFO L131 PetriNetUnfolder]: For 523/523 co-relation queries the response was YES. [2023-08-31 20:48:44,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:48:44,668 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 20:48:44,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:48:44,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:48:44,669 INFO L85 PathProgramCache]: Analyzing trace with hash -993995810, now seen corresponding path program 1 times [2023-08-31 20:48:44,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:48:44,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823995426] [2023-08-31 20:48:44,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:48:44,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:48:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:48:44,685 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:48:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:48:44,702 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:48:44,702 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:48:44,702 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:48:44,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 20:48:44,703 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:48:44,703 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:48:44,703 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:48:44,703 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 20:48:44,750 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 20:48:44,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 841 places, 910 transitions, 2080 flow