./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_05-lockfuns_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --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 [2023-09-01 10:47:46,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:47:46,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:47:46,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:47:46,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:47:46,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:47:46,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:47:46,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:47:46,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:47:46,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:47:46,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:47:46,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:47:46,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:47:46,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:47:46,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:47:46,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:47:46,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:47:46,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:47:46,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:47:46,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:47:46,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:47:46,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:47:46,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:47:46,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:47:46,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:47:46,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:47:46,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:47:46,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:47:46,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:47:46,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:47:46,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:47:46,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:47:46,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:47:46,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:47:46,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:47:46,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:47:46,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:47:46,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:47:46,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:47:46,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:47:46,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:47:46,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:47:46,306 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:47:46,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:47:46,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:47:46,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:47:46,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:47:46,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:47:46,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:47:46,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:47:46,309 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:47:46,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:47:46,310 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:47:46,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:47:46,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:47:46,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:47:46,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:47:46,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:47:46,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:47:46,311 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:47:46,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:47:46,312 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:47:46,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:47:46,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:47:46,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:47:46,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:47:46,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:47:46,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:47:46,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:47:46,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:47:46,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:47:46,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:47:46,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:47:46,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:47:46,314 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:47:46,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:47:46,314 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:47:46,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:47:46,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:47:46,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:47:46,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:47:46,607 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:47:46,608 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:47:46,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-09-01 10:47:47,758 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:47:47,994 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:47:47,995 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-09-01 10:47:48,011 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/876e91b75/1c9f614369e941eb8873f6f1ad983661/FLAG36230420c [2023-09-01 10:47:48,024 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/876e91b75/1c9f614369e941eb8873f6f1ad983661 [2023-09-01 10:47:48,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:47:48,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:47:48,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:47:48,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:47:48,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:47:48,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:47:48" (1/1) ... [2023-09-01 10:47:48,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@142d974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48, skipping insertion in model container [2023-09-01 10:47:48,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:47:48" (1/1) ... [2023-09-01 10:47:48,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:47:48,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:47:48,297 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_05-lockfuns_racefree.i[30176,30189] [2023-09-01 10:47:48,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:47:48,336 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:47:48,386 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_05-lockfuns_racefree.i[30176,30189] [2023-09-01 10:47:48,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:47:48,446 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:47:48,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48 WrapperNode [2023-09-01 10:47:48,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:47:48,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:47:48,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:47:48,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:47:48,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48" (1/1) ... [2023-09-01 10:47:48,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48" (1/1) ... [2023-09-01 10:47:48,509 INFO L138 Inliner]: procedures = 172, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2023-09-01 10:47:48,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:47:48,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:47:48,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:47:48,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:47:48,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48" (1/1) ... [2023-09-01 10:47:48,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48" (1/1) ... [2023-09-01 10:47:48,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48" (1/1) ... [2023-09-01 10:47:48,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48" (1/1) ... [2023-09-01 10:47:48,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48" (1/1) ... [2023-09-01 10:47:48,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48" (1/1) ... [2023-09-01 10:47:48,548 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48" (1/1) ... [2023-09-01 10:47:48,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48" (1/1) ... [2023-09-01 10:47:48,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:47:48,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:47:48,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:47:48,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:47:48,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48" (1/1) ... [2023-09-01 10:47:48,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:47:48,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:47:48,588 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) [2023-09-01 10:47:48,615 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 [2023-09-01 10:47:48,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:47:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:47:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:47:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:47:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:47:48,631 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:47:48,631 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:47:48,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:47:48,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:47:48,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:47:48,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:47:48,632 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 10:47:48,801 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:47:48,802 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:47:49,018 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:47:49,026 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:47:49,027 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 10:47:49,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:47:49 BoogieIcfgContainer [2023-09-01 10:47:49,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:47:49,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:47:49,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:47:49,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:47:49,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:47:48" (1/3) ... [2023-09-01 10:47:49,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391cf961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:47:49, skipping insertion in model container [2023-09-01 10:47:49,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:47:48" (2/3) ... [2023-09-01 10:47:49,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391cf961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:47:49, skipping insertion in model container [2023-09-01 10:47:49,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:47:49" (3/3) ... [2023-09-01 10:47:49,038 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2023-09-01 10:47:49,045 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:47:49,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:47:49,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:47:49,053 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:47:49,100 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 10:47:49,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 103 transitions, 214 flow [2023-09-01 10:47:49,175 INFO L130 PetriNetUnfolder]: 17/138 cut-off events. [2023-09-01 10:47:49,176 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:47:49,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 138 events. 17/138 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 315 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-09-01 10:47:49,182 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 103 transitions, 214 flow [2023-09-01 10:47:49,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 98 transitions, 201 flow [2023-09-01 10:47:49,188 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:47:49,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 98 transitions, 201 flow [2023-09-01 10:47:49,199 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 98 transitions, 201 flow [2023-09-01 10:47:49,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 98 transitions, 201 flow [2023-09-01 10:47:49,232 INFO L130 PetriNetUnfolder]: 16/133 cut-off events. [2023-09-01 10:47:49,232 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:47:49,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 133 events. 16/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 304 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-09-01 10:47:49,235 INFO L119 LiptonReduction]: Number of co-enabled transitions 2460 [2023-09-01 10:47:51,570 INFO L134 LiptonReduction]: Checked pairs total: 3508 [2023-09-01 10:47:51,570 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-09-01 10:47:51,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:47:51,599 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;@2c35fd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:47:51,599 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:47:51,603 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-09-01 10:47:51,603 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:47:51,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:47:51,604 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:47:51,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:47:51,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:47:51,611 INFO L85 PathProgramCache]: Analyzing trace with hash -931910374, now seen corresponding path program 1 times [2023-09-01 10:47:51,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:47:51,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132936711] [2023-09-01 10:47:51,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:47:51,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:47:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:47:51,760 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:47:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:47:51,821 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:47:51,823 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:47:51,824 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:47:51,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:47:51,826 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:47:51,830 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:47:51,831 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:47:51,831 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:47:51,858 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:47:51,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 135 transitions, 288 flow [2023-09-01 10:47:51,923 INFO L130 PetriNetUnfolder]: 31/229 cut-off events. [2023-09-01 10:47:51,924 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:47:51,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 229 events. 31/229 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 669 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 140. Up to 8 conditions per place. [2023-09-01 10:47:51,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 135 transitions, 288 flow [2023-09-01 10:47:51,931 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 135 transitions, 288 flow [2023-09-01 10:47:51,931 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:47:51,931 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 135 transitions, 288 flow [2023-09-01 10:47:51,932 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 135 transitions, 288 flow [2023-09-01 10:47:51,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 135 transitions, 288 flow [2023-09-01 10:47:51,958 INFO L130 PetriNetUnfolder]: 31/229 cut-off events. [2023-09-01 10:47:51,959 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:47:51,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 229 events. 31/229 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 669 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 140. Up to 8 conditions per place. [2023-09-01 10:47:51,965 INFO L119 LiptonReduction]: Number of co-enabled transitions 7380 [2023-09-01 10:47:53,990 INFO L134 LiptonReduction]: Checked pairs total: 15218 [2023-09-01 10:47:53,990 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-09-01 10:47:53,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:47:53,994 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;@2c35fd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:47:53,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:47:53,999 INFO L130 PetriNetUnfolder]: 12/58 cut-off events. [2023-09-01 10:47:53,999 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 10:47:53,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:47:54,000 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:47:54,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:47:54,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:47:54,000 INFO L85 PathProgramCache]: Analyzing trace with hash 856034228, now seen corresponding path program 1 times [2023-09-01 10:47:54,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:47:54,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616998813] [2023-09-01 10:47:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:47:54,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:47:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:47:54,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:47:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:47:54,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:47:54,042 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:47:54,043 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:47:54,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:47:54,043 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:47:54,044 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:47:54,044 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:47:54,044 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:47:54,060 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 10:47:54,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 167 transitions, 364 flow [2023-09-01 10:47:54,109 INFO L130 PetriNetUnfolder]: 50/351 cut-off events. [2023-09-01 10:47:54,109 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:47:54,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 351 events. 50/351 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1141 event pairs, 1 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 237. Up to 16 conditions per place. [2023-09-01 10:47:54,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 167 transitions, 364 flow [2023-09-01 10:47:54,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 167 transitions, 364 flow [2023-09-01 10:47:54,114 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:47:54,115 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 167 transitions, 364 flow [2023-09-01 10:47:54,115 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 167 transitions, 364 flow [2023-09-01 10:47:54,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 167 transitions, 364 flow [2023-09-01 10:47:54,144 INFO L130 PetriNetUnfolder]: 50/351 cut-off events. [2023-09-01 10:47:54,144 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:47:54,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 351 events. 50/351 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1141 event pairs, 1 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 237. Up to 16 conditions per place. [2023-09-01 10:47:54,157 INFO L119 LiptonReduction]: Number of co-enabled transitions 14040 [2023-09-01 10:47:56,218 INFO L134 LiptonReduction]: Checked pairs total: 33120 [2023-09-01 10:47:56,218 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-09-01 10:47:56,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:47:56,222 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;@2c35fd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:47:56,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:47:56,228 INFO L130 PetriNetUnfolder]: 22/95 cut-off events. [2023-09-01 10:47:56,229 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 10:47:56,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:47:56,229 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:47:56,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:47:56,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:47:56,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1090998827, now seen corresponding path program 1 times [2023-09-01 10:47:56,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:47:56,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919077344] [2023-09-01 10:47:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:47:56,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:47:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:47:56,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:47:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:47:56,295 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:47:56,296 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:47:56,296 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:47:56,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:47:56,296 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:47:56,297 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:47:56,297 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:47:56,297 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:47:56,317 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:47:56,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 199 transitions, 442 flow [2023-09-01 10:47:56,377 INFO L130 PetriNetUnfolder]: 81/537 cut-off events. [2023-09-01 10:47:56,377 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:47:56,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 537 events. 81/537 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2013 event pairs, 6 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 371. Up to 32 conditions per place. [2023-09-01 10:47:56,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 199 transitions, 442 flow [2023-09-01 10:47:56,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 199 transitions, 442 flow [2023-09-01 10:47:56,387 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:47:56,388 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 199 transitions, 442 flow [2023-09-01 10:47:56,388 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 199 transitions, 442 flow [2023-09-01 10:47:56,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 199 transitions, 442 flow [2023-09-01 10:47:56,448 INFO L130 PetriNetUnfolder]: 81/537 cut-off events. [2023-09-01 10:47:56,449 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:47:56,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 537 events. 81/537 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2013 event pairs, 6 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 371. Up to 32 conditions per place. [2023-09-01 10:47:56,467 INFO L119 LiptonReduction]: Number of co-enabled transitions 22680 [2023-09-01 10:47:58,797 INFO L134 LiptonReduction]: Checked pairs total: 56722 [2023-09-01 10:47:58,797 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-09-01 10:47:58,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:47:58,800 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;@2c35fd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:47:58,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:47:58,810 INFO L130 PetriNetUnfolder]: 33/138 cut-off events. [2023-09-01 10:47:58,810 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 10:47:58,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:47:58,810 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:47:58,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:47:58,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:47:58,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1881173807, now seen corresponding path program 1 times [2023-09-01 10:47:58,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:47:58,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702635623] [2023-09-01 10:47:58,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:47:58,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:47:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:47:58,835 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:47:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:47:58,857 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:47:58,858 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:47:58,858 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:47:58,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:47:58,858 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:47:58,859 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:47:58,859 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:47:58,859 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:47:58,884 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 10:47:58,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 231 transitions, 522 flow [2023-09-01 10:47:58,994 INFO L130 PetriNetUnfolder]: 140/855 cut-off events. [2023-09-01 10:47:58,994 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:47:59,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 855 events. 140/855 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3770 event pairs, 23 based on Foata normal form. 0/725 useless extension candidates. Maximal degree in co-relation 582. Up to 80 conditions per place. [2023-09-01 10:47:59,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 231 transitions, 522 flow [2023-09-01 10:47:59,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 231 transitions, 522 flow [2023-09-01 10:47:59,015 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:47:59,016 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 231 transitions, 522 flow [2023-09-01 10:47:59,016 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 231 transitions, 522 flow [2023-09-01 10:47:59,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 231 transitions, 522 flow [2023-09-01 10:47:59,125 INFO L130 PetriNetUnfolder]: 140/855 cut-off events. [2023-09-01 10:47:59,126 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:47:59,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 855 events. 140/855 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3770 event pairs, 23 based on Foata normal form. 0/725 useless extension candidates. Maximal degree in co-relation 582. Up to 80 conditions per place. [2023-09-01 10:47:59,159 INFO L119 LiptonReduction]: Number of co-enabled transitions 33300 [2023-09-01 10:48:01,504 INFO L134 LiptonReduction]: Checked pairs total: 76432 [2023-09-01 10:48:01,504 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-09-01 10:48:01,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:48:01,507 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;@2c35fd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:48:01,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:48:01,521 INFO L130 PetriNetUnfolder]: 46/188 cut-off events. [2023-09-01 10:48:01,522 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 10:48:01,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:48:01,522 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:48:01,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:48:01,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:48:01,523 INFO L85 PathProgramCache]: Analyzing trace with hash 943123463, now seen corresponding path program 1 times [2023-09-01 10:48:01,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:48:01,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448887408] [2023-09-01 10:48:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:48:01,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:48:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:01,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:48:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:01,566 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:48:01,567 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:48:01,567 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:48:01,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:48:01,567 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:48:01,568 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:48:01,568 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:48:01,568 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:48:01,603 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 10:48:01,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 263 transitions, 604 flow [2023-09-01 10:48:01,854 INFO L130 PetriNetUnfolder]: 263/1445 cut-off events. [2023-09-01 10:48:01,854 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:48:01,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 1445 events. 263/1445 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7807 event pairs, 72 based on Foata normal form. 0/1239 useless extension candidates. Maximal degree in co-relation 954. Up to 192 conditions per place. [2023-09-01 10:48:01,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 263 transitions, 604 flow [2023-09-01 10:48:01,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 263 transitions, 604 flow [2023-09-01 10:48:01,889 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:48:01,889 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 263 transitions, 604 flow [2023-09-01 10:48:01,893 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 263 transitions, 604 flow [2023-09-01 10:48:01,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 263 transitions, 604 flow [2023-09-01 10:48:02,123 INFO L130 PetriNetUnfolder]: 263/1445 cut-off events. [2023-09-01 10:48:02,124 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:48:02,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 1445 events. 263/1445 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7807 event pairs, 72 based on Foata normal form. 0/1239 useless extension candidates. Maximal degree in co-relation 954. Up to 192 conditions per place. [2023-09-01 10:48:02,189 INFO L119 LiptonReduction]: Number of co-enabled transitions 45900 [2023-09-01 10:48:04,588 INFO L134 LiptonReduction]: Checked pairs total: 121371 [2023-09-01 10:48:04,588 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-09-01 10:48:04,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:48:04,590 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;@2c35fd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:48:04,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:48:04,610 INFO L130 PetriNetUnfolder]: 62/252 cut-off events. [2023-09-01 10:48:04,610 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 10:48:04,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:48:04,610 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:48:04,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:48:04,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:48:04,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1641837569, now seen corresponding path program 1 times [2023-09-01 10:48:04,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:48:04,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930601059] [2023-09-01 10:48:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:48:04,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:48:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:04,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:48:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:04,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:48:04,654 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:48:04,654 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:48:04,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:48:04,654 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:48:04,655 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:48:04,655 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:48:04,655 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:48:04,689 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 10:48:04,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 295 transitions, 688 flow [2023-09-01 10:48:05,224 INFO L130 PetriNetUnfolder]: 530/2595 cut-off events. [2023-09-01 10:48:05,225 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:48:05,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3093 conditions, 2595 events. 530/2595 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16857 event pairs, 201 based on Foata normal form. 0/2249 useless extension candidates. Maximal degree in co-relation 1663. Up to 448 conditions per place. [2023-09-01 10:48:05,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 295 transitions, 688 flow [2023-09-01 10:48:05,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 295 transitions, 688 flow [2023-09-01 10:48:05,287 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:48:05,287 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 295 transitions, 688 flow [2023-09-01 10:48:05,287 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 295 transitions, 688 flow [2023-09-01 10:48:05,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 295 transitions, 688 flow [2023-09-01 10:48:05,796 INFO L130 PetriNetUnfolder]: 530/2595 cut-off events. [2023-09-01 10:48:05,796 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:48:05,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3093 conditions, 2595 events. 530/2595 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16857 event pairs, 201 based on Foata normal form. 0/2249 useless extension candidates. Maximal degree in co-relation 1663. Up to 448 conditions per place. [2023-09-01 10:48:05,936 INFO L119 LiptonReduction]: Number of co-enabled transitions 60480 [2023-09-01 10:48:08,499 INFO L134 LiptonReduction]: Checked pairs total: 166989 [2023-09-01 10:48:08,499 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-09-01 10:48:08,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:48:08,501 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;@2c35fd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:48:08,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:48:08,527 INFO L130 PetriNetUnfolder]: 83/328 cut-off events. [2023-09-01 10:48:08,527 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 10:48:08,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:48:08,528 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:48:08,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:48:08,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:48:08,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1886354956, now seen corresponding path program 1 times [2023-09-01 10:48:08,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:48:08,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339148313] [2023-09-01 10:48:08,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:48:08,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:48:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:08,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:48:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:08,571 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:48:08,571 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:48:08,572 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:48:08,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:48:08,572 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:48:08,573 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:48:08,573 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:48:08,573 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 10:48:08,600 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:48:08,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 327 transitions, 774 flow [2023-09-01 10:48:09,509 INFO L130 PetriNetUnfolder]: 1117/4897 cut-off events. [2023-09-01 10:48:09,509 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:48:09,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5982 conditions, 4897 events. 1117/4897 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 38069 event pairs, 522 based on Foata normal form. 0/4283 useless extension candidates. Maximal degree in co-relation 3077. Up to 1024 conditions per place. [2023-09-01 10:48:09,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 327 transitions, 774 flow [2023-09-01 10:48:09,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 327 transitions, 774 flow [2023-09-01 10:48:09,627 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:48:09,627 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 327 transitions, 774 flow [2023-09-01 10:48:09,628 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 327 transitions, 774 flow [2023-09-01 10:48:09,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 327 transitions, 774 flow [2023-09-01 10:48:10,705 INFO L130 PetriNetUnfolder]: 1117/4897 cut-off events. [2023-09-01 10:48:10,706 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:48:10,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5982 conditions, 4897 events. 1117/4897 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 38069 event pairs, 522 based on Foata normal form. 0/4283 useless extension candidates. Maximal degree in co-relation 3077. Up to 1024 conditions per place. [2023-09-01 10:48:10,966 INFO L119 LiptonReduction]: Number of co-enabled transitions 77040 [2023-09-01 10:48:13,577 INFO L134 LiptonReduction]: Checked pairs total: 237918 [2023-09-01 10:48:13,577 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-09-01 10:48:13,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:48:13,578 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;@2c35fd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:48:13,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:48:13,649 INFO L130 PetriNetUnfolder]: 105/419 cut-off events. [2023-09-01 10:48:13,649 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 10:48:13,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:48:13,649 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:48:13,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:48:13,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:48:13,650 INFO L85 PathProgramCache]: Analyzing trace with hash -122733573, now seen corresponding path program 1 times [2023-09-01 10:48:13,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:48:13,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806082997] [2023-09-01 10:48:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:48:13,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:48:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:13,693 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:48:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:13,713 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:48:13,713 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:48:13,713 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:48:13,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:48:13,714 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:48:13,714 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:48:13,714 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:48:13,714 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 10:48:13,738 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 10:48:13,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 359 transitions, 862 flow [2023-09-01 10:48:15,549 INFO L130 PetriNetUnfolder]: 2408/9567 cut-off events. [2023-09-01 10:48:15,549 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:48:15,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11944 conditions, 9567 events. 2408/9567 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 86566 event pairs, 1291 based on Foata normal form. 0/8429 useless extension candidates. Maximal degree in co-relation 5964. Up to 2304 conditions per place. [2023-09-01 10:48:15,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 359 transitions, 862 flow [2023-09-01 10:48:15,851 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 359 transitions, 862 flow [2023-09-01 10:48:15,852 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:48:15,852 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 359 transitions, 862 flow [2023-09-01 10:48:15,852 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 359 transitions, 862 flow [2023-09-01 10:48:15,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 359 transitions, 862 flow [2023-09-01 10:48:17,582 INFO L130 PetriNetUnfolder]: 2408/9567 cut-off events. [2023-09-01 10:48:17,582 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:48:17,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11944 conditions, 9567 events. 2408/9567 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 86566 event pairs, 1291 based on Foata normal form. 0/8429 useless extension candidates. Maximal degree in co-relation 5964. Up to 2304 conditions per place. [2023-09-01 10:48:18,004 INFO L119 LiptonReduction]: Number of co-enabled transitions 95580 [2023-09-01 10:48:20,819 INFO L134 LiptonReduction]: Checked pairs total: 265849 [2023-09-01 10:48:20,819 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-09-01 10:48:20,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:48:20,822 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;@2c35fd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:48:20,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:48:20,891 INFO L130 PetriNetUnfolder]: 159/591 cut-off events. [2023-09-01 10:48:20,891 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 10:48:20,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:48:20,891 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:48:20,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:48:20,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:48:20,892 INFO L85 PathProgramCache]: Analyzing trace with hash -31832382, now seen corresponding path program 1 times [2023-09-01 10:48:20,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:48:20,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446527434] [2023-09-01 10:48:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:48:20,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:48:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:20,928 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:48:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:20,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:48:20,975 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:48:20,975 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:48:20,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:48:20,976 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:48:20,978 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:48:20,978 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:48:20,978 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 10:48:21,008 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 10:48:21,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 391 transitions, 952 flow [2023-09-01 10:48:25,440 INFO L130 PetriNetUnfolder]: 5235/19101 cut-off events. [2023-09-01 10:48:25,440 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:48:25,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24307 conditions, 19101 events. 5235/19101 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 193362 event pairs, 3084 based on Foata normal form. 0/16927 useless extension candidates. Maximal degree in co-relation 11924. Up to 5120 conditions per place. [2023-09-01 10:48:25,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 337 places, 391 transitions, 952 flow [2023-09-01 10:48:25,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 337 places, 391 transitions, 952 flow [2023-09-01 10:48:25,877 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:48:25,878 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 337 places, 391 transitions, 952 flow [2023-09-01 10:48:25,878 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 337 places, 391 transitions, 952 flow [2023-09-01 10:48:25,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 391 transitions, 952 flow [2023-09-01 10:48:29,698 INFO L130 PetriNetUnfolder]: 5235/19101 cut-off events. [2023-09-01 10:48:29,698 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:48:30,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24307 conditions, 19101 events. 5235/19101 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 193362 event pairs, 3084 based on Foata normal form. 0/16927 useless extension candidates. Maximal degree in co-relation 11924. Up to 5120 conditions per place. [2023-09-01 10:48:30,807 INFO L119 LiptonReduction]: Number of co-enabled transitions 116100 [2023-09-01 10:48:33,599 INFO L134 LiptonReduction]: Checked pairs total: 330514 [2023-09-01 10:48:33,599 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-09-01 10:48:33,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:48:33,601 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;@2c35fd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:48:33,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:48:33,676 INFO L130 PetriNetUnfolder]: 234/819 cut-off events. [2023-09-01 10:48:33,676 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 10:48:33,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:48:33,677 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:48:33,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:48:33,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:48:33,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1275169012, now seen corresponding path program 1 times [2023-09-01 10:48:33,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:48:33,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934745121] [2023-09-01 10:48:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:48:33,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:48:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:33,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:48:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:33,738 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:48:33,738 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:48:33,738 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:48:33,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:48:33,739 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:48:33,739 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:48:33,740 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:48:33,740 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 10:48:33,773 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 10:48:33,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 364 places, 423 transitions, 1044 flow [2023-09-01 10:48:42,697 INFO L130 PetriNetUnfolder]: 11390/38619 cut-off events. [2023-09-01 10:48:42,697 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:48:43,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49983 conditions, 38619 events. 11390/38619 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 435449 event pairs, 7181 based on Foata normal form. 0/34385 useless extension candidates. Maximal degree in co-relation 24286. Up to 11264 conditions per place. [2023-09-01 10:48:43,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 364 places, 423 transitions, 1044 flow [2023-09-01 10:48:44,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 364 places, 423 transitions, 1044 flow [2023-09-01 10:48:44,467 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:48:44,467 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 364 places, 423 transitions, 1044 flow [2023-09-01 10:48:44,468 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 364 places, 423 transitions, 1044 flow [2023-09-01 10:48:44,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 364 places, 423 transitions, 1044 flow [2023-09-01 10:48:53,449 INFO L130 PetriNetUnfolder]: 11390/38619 cut-off events. [2023-09-01 10:48:53,450 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:48:54,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49983 conditions, 38619 events. 11390/38619 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 435449 event pairs, 7181 based on Foata normal form. 0/34385 useless extension candidates. Maximal degree in co-relation 24286. Up to 11264 conditions per place. [2023-09-01 10:48:56,357 INFO L119 LiptonReduction]: Number of co-enabled transitions 138600 [2023-09-01 10:48:59,189 INFO L134 LiptonReduction]: Checked pairs total: 396894 [2023-09-01 10:48:59,189 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-09-01 10:48:59,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:48:59,190 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;@2c35fd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:48:59,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:48:59,341 INFO L130 PetriNetUnfolder]: 360/1165 cut-off events. [2023-09-01 10:48:59,342 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 10:48:59,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:48:59,342 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:48:59,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:48:59,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:48:59,343 INFO L85 PathProgramCache]: Analyzing trace with hash -292877484, now seen corresponding path program 1 times [2023-09-01 10:48:59,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:48:59,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714931933] [2023-09-01 10:48:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:48:59,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:48:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:59,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:48:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:59,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:48:59,395 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:48:59,395 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:48:59,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:48:59,395 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:48:59,396 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:48:59,396 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:48:59,396 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 10:48:59,425 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:48:59,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 455 transitions, 1138 flow [2023-09-01 10:49:19,332 INFO L130 PetriNetUnfolder]: 24713/78617 cut-off events. [2023-09-01 10:49:19,332 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:49:23,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103308 conditions, 78617 events. 24713/78617 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 969014 event pairs, 16398 based on Foata normal form. 0/70275 useless extension candidates. Maximal degree in co-relation 49962. Up to 24576 conditions per place. [2023-09-01 10:49:23,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 391 places, 455 transitions, 1138 flow [2023-09-01 10:49:25,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 391 places, 455 transitions, 1138 flow [2023-09-01 10:49:25,124 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:25,124 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 391 places, 455 transitions, 1138 flow [2023-09-01 10:49:25,124 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 391 places, 455 transitions, 1138 flow [2023-09-01 10:49:25,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 455 transitions, 1138 flow [2023-09-01 10:49:46,715 INFO L130 PetriNetUnfolder]: 24713/78617 cut-off events. [2023-09-01 10:49:46,716 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:49:51,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103308 conditions, 78617 events. 24713/78617 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 969014 event pairs, 16398 based on Foata normal form. 0/70275 useless extension candidates. Maximal degree in co-relation 49962. Up to 24576 conditions per place. [2023-09-01 10:49:58,756 INFO L119 LiptonReduction]: Number of co-enabled transitions 163080 [2023-09-01 10:50:01,936 INFO L134 LiptonReduction]: Checked pairs total: 465238 [2023-09-01 10:50:01,937 INFO L136 LiptonReduction]: Total number of compositions: 266 [2023-09-01 10:50:01,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:01,938 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@2c35fd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:01,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:02,099 INFO L130 PetriNetUnfolder]: 560/1685 cut-off events. [2023-09-01 10:50:02,099 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 10:50:02,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:02,100 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:02,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:02,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:02,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1756300862, now seen corresponding path program 1 times [2023-09-01 10:50:02,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:02,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636395360] [2023-09-01 10:50:02,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:02,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:02,121 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:02,141 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:02,142 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:02,142 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:02,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:50:02,142 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:02,143 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:02,143 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:02,143 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 10:50:02,175 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 10:50:02,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 487 transitions, 1234 flow [2023-09-01 10:50:46,341 INFO L130 PetriNetUnfolder]: 53396/160599 cut-off events. [2023-09-01 10:50:46,342 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:50:55,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213978 conditions, 160599 events. 53396/160599 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2489. Compared 2165922 event pairs, 36879 based on Foata normal form. 0/144053 useless extension candidates. Maximal degree in co-relation 103287. Up to 53248 conditions per place. [2023-09-01 10:50:55,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 418 places, 487 transitions, 1234 flow [2023-09-01 10:51:00,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 418 places, 487 transitions, 1234 flow [2023-09-01 10:51:00,329 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:51:00,329 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 418 places, 487 transitions, 1234 flow [2023-09-01 10:51:00,329 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 418 places, 487 transitions, 1234 flow [2023-09-01 10:51:00,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 487 transitions, 1234 flow [2023-09-01 10:51:53,647 INFO L130 PetriNetUnfolder]: 53396/160599 cut-off events. [2023-09-01 10:51:53,647 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:52:03,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213978 conditions, 160599 events. 53396/160599 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2489. Compared 2165922 event pairs, 36879 based on Foata normal form. 0/144053 useless extension candidates. Maximal degree in co-relation 103287. Up to 53248 conditions per place. [2023-09-01 10:52:19,677 INFO L119 LiptonReduction]: Number of co-enabled transitions 189540 [2023-09-01 10:52:22,818 INFO L134 LiptonReduction]: Checked pairs total: 543368 [2023-09-01 10:52:22,818 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-09-01 10:52:22,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:52:22,820 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;@2c35fd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:52:22,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:52:23,051 INFO L130 PetriNetUnfolder]: 913/2528 cut-off events. [2023-09-01 10:52:23,051 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 10:52:23,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:52:23,051 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:52:23,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:52:23,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:52:23,052 INFO L85 PathProgramCache]: Analyzing trace with hash 98163759, now seen corresponding path program 1 times [2023-09-01 10:52:23,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:52:23,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921566739] [2023-09-01 10:52:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:52:23,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:52:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:52:23,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:52:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:52:23,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:52:23,107 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:52:23,108 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:52:23,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 10:52:23,108 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:52:23,108 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:52:23,109 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:52:23,109 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 10:52:23,147 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 10:52:23,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 445 places, 519 transitions, 1332 flow