./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/14_spin2003.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/14_spin2003.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f5ed9d077a05ec08544f0d3c902eb6b5aa6ad768c4ec69a1caaef2b54748a07e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 11:30:01,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 11:30:01,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 11:30:01,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 11:30:01,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 11:30:01,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 11:30:01,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 11:30:01,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 11:30:01,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 11:30:01,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 11:30:01,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 11:30:01,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 11:30:01,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 11:30:01,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 11:30:01,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 11:30:01,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 11:30:01,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 11:30:01,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 11:30:01,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 11:30:01,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 11:30:01,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 11:30:01,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 11:30:01,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 11:30:01,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 11:30:01,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 11:30:01,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 11:30:01,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 11:30:01,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 11:30:01,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 11:30:01,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 11:30:01,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 11:30:01,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 11:30:01,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 11:30:01,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 11:30:01,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 11:30:01,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 11:30:01,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 11:30:01,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 11:30:01,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 11:30:01,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 11:30:01,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 11:30:01,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 11:30:01,454 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 11:30:01,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 11:30:01,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 11:30:01,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 11:30:01,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 11:30:01,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 11:30:01,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 11:30:01,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 11:30:01,458 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 11:30:01,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 11:30:01,459 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 11:30:01,459 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 11:30:01,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 11:30:01,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 11:30:01,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 11:30:01,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 11:30:01,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 11:30:01,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 11:30:01,460 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 11:30:01,460 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 11:30:01,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 11:30:01,461 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 11:30:01,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 11:30:01,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 11:30:01,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 11:30:01,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 11:30:01,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 11:30:01,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 11:30:01,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 11:30:01,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 11:30:01,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 11:30:01,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 11:30:01,463 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 11:30:01,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 11:30:01,463 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 11:30:01,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 11:30:01,464 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 11:30:01,464 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5ed9d077a05ec08544f0d3c902eb6b5aa6ad768c4ec69a1caaef2b54748a07e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 11:30:01,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 11:30:01,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 11:30:01,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 11:30:01,786 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 11:30:01,786 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 11:30:01,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/14_spin2003.i [2023-08-31 11:30:02,888 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 11:30:03,122 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 11:30:03,122 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003.i [2023-08-31 11:30:03,133 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/997d61b70/56c943a746244fe38bc29f02699568a2/FLAGb04c2bdd2 [2023-08-31 11:30:03,152 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/997d61b70/56c943a746244fe38bc29f02699568a2 [2023-08-31 11:30:03,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 11:30:03,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 11:30:03,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 11:30:03,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 11:30:03,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 11:30:03,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:30:03" (1/1) ... [2023-08-31 11:30:03,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d8673a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03, skipping insertion in model container [2023-08-31 11:30:03,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:30:03" (1/1) ... [2023-08-31 11:30:03,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 11:30:03,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 11:30:03,555 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003.i[30203,30216] [2023-08-31 11:30:03,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 11:30:03,576 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 11:30:03,612 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003.i[30203,30216] [2023-08-31 11:30:03,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 11:30:03,651 INFO L208 MainTranslator]: Completed translation [2023-08-31 11:30:03,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03 WrapperNode [2023-08-31 11:30:03,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 11:30:03,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 11:30:03,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 11:30:03,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 11:30:03,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03" (1/1) ... [2023-08-31 11:30:03,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03" (1/1) ... [2023-08-31 11:30:03,706 INFO L138 Inliner]: procedures = 169, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 69 [2023-08-31 11:30:03,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 11:30:03,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 11:30:03,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 11:30:03,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 11:30:03,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03" (1/1) ... [2023-08-31 11:30:03,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03" (1/1) ... [2023-08-31 11:30:03,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03" (1/1) ... [2023-08-31 11:30:03,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03" (1/1) ... [2023-08-31 11:30:03,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03" (1/1) ... [2023-08-31 11:30:03,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03" (1/1) ... [2023-08-31 11:30:03,744 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03" (1/1) ... [2023-08-31 11:30:03,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03" (1/1) ... [2023-08-31 11:30:03,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 11:30:03,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 11:30:03,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 11:30:03,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 11:30:03,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03" (1/1) ... [2023-08-31 11:30:03,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 11:30:03,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 11:30:03,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 11:30:03,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 11:30:03,831 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-31 11:30:03,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-31 11:30:03,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 11:30:03,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 11:30:03,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 11:30:03,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 11:30:03,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 11:30:03,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 11:30:03,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 11:30:03,834 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 11:30:04,011 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 11:30:04,018 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 11:30:04,141 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 11:30:04,214 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 11:30:04,215 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-31 11:30:04,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:30:04 BoogieIcfgContainer [2023-08-31 11:30:04,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 11:30:04,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 11:30:04,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 11:30:04,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 11:30:04,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:30:03" (1/3) ... [2023-08-31 11:30:04,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5780851a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:30:04, skipping insertion in model container [2023-08-31 11:30:04,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:03" (2/3) ... [2023-08-31 11:30:04,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5780851a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:30:04, skipping insertion in model container [2023-08-31 11:30:04,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:30:04" (3/3) ... [2023-08-31 11:30:04,228 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003.i [2023-08-31 11:30:04,234 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 11:30:04,240 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 11:30:04,240 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-31 11:30:04,240 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 11:30:04,270 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:04,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 54 transitions, 113 flow [2023-08-31 11:30:04,349 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2023-08-31 11:30:04,349 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 11:30:04,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 3/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2023-08-31 11:30:04,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 54 transitions, 113 flow [2023-08-31 11:30:04,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 54 transitions, 113 flow [2023-08-31 11:30:04,364 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:04,376 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 54 transitions, 113 flow [2023-08-31 11:30:04,382 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 54 transitions, 113 flow [2023-08-31 11:30:04,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 54 transitions, 113 flow [2023-08-31 11:30:04,411 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2023-08-31 11:30:04,413 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 11:30:04,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 3/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2023-08-31 11:30:04,416 INFO L119 LiptonReduction]: Number of co-enabled transitions 728 [2023-08-31 11:30:05,812 INFO L134 LiptonReduction]: Checked pairs total: 750 [2023-08-31 11:30:05,812 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-08-31 11:30:05,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:05,830 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:05,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:05,834 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-31 11:30:05,834 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 11:30:05,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:05,835 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 11:30:05,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:05,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash 329809430, now seen corresponding path program 1 times [2023-08-31 11:30:05,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:05,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752207443] [2023-08-31 11:30:05,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:05,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:05,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:06,011 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:06,015 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:06,016 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:06,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 11:30:06,027 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:06,030 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:06,045 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:06,045 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 11:30:06,060 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:06,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 83 transitions, 178 flow [2023-08-31 11:30:06,078 INFO L130 PetriNetUnfolder]: 5/105 cut-off events. [2023-08-31 11:30:06,079 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 11:30:06,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 105 events. 5/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 196 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 68. Up to 6 conditions per place. [2023-08-31 11:30:06,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 83 transitions, 178 flow [2023-08-31 11:30:06,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 83 transitions, 178 flow [2023-08-31 11:30:06,081 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:06,081 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 83 transitions, 178 flow [2023-08-31 11:30:06,081 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 83 transitions, 178 flow [2023-08-31 11:30:06,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 83 transitions, 178 flow [2023-08-31 11:30:06,096 INFO L130 PetriNetUnfolder]: 5/105 cut-off events. [2023-08-31 11:30:06,096 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 11:30:06,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 105 events. 5/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 196 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 68. Up to 6 conditions per place. [2023-08-31 11:30:06,099 INFO L119 LiptonReduction]: Number of co-enabled transitions 3080 [2023-08-31 11:30:06,938 INFO L134 LiptonReduction]: Checked pairs total: 8772 [2023-08-31 11:30:06,939 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-31 11:30:06,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:06,942 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:06,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:06,946 INFO L130 PetriNetUnfolder]: 0/29 cut-off events. [2023-08-31 11:30:06,946 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 11:30:06,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:06,947 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 11:30:06,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:06,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:06,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1251644294, now seen corresponding path program 1 times [2023-08-31 11:30:06,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:06,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071838542] [2023-08-31 11:30:06,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:06,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:06,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:06,984 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:06,985 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:06,985 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:06,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 11:30:06,985 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:06,986 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:06,986 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:06,986 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 11:30:07,009 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:07,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 245 flow [2023-08-31 11:30:07,031 INFO L130 PetriNetUnfolder]: 7/146 cut-off events. [2023-08-31 11:30:07,036 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 11:30:07,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 146 events. 7/146 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 347 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 109. Up to 8 conditions per place. [2023-08-31 11:30:07,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 112 transitions, 245 flow [2023-08-31 11:30:07,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 112 transitions, 245 flow [2023-08-31 11:30:07,041 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:07,041 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 112 transitions, 245 flow [2023-08-31 11:30:07,041 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 112 transitions, 245 flow [2023-08-31 11:30:07,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 245 flow [2023-08-31 11:30:07,071 INFO L130 PetriNetUnfolder]: 7/146 cut-off events. [2023-08-31 11:30:07,074 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 11:30:07,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 146 events. 7/146 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 347 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 109. Up to 8 conditions per place. [2023-08-31 11:30:07,080 INFO L119 LiptonReduction]: Number of co-enabled transitions 7056 [2023-08-31 11:30:08,056 INFO L134 LiptonReduction]: Checked pairs total: 26617 [2023-08-31 11:30:08,056 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-31 11:30:08,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:08,059 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:08,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:08,064 INFO L130 PetriNetUnfolder]: 1/53 cut-off events. [2023-08-31 11:30:08,064 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 11:30:08,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:08,065 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 11:30:08,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:08,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:08,066 INFO L85 PathProgramCache]: Analyzing trace with hash -284948833, now seen corresponding path program 1 times [2023-08-31 11:30:08,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:08,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177483290] [2023-08-31 11:30:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:08,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:08,091 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:08,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:08,108 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:08,108 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:08,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 11:30:08,109 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:08,109 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:08,109 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:08,109 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 11:30:08,129 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:08,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 141 transitions, 314 flow [2023-08-31 11:30:08,150 INFO L130 PetriNetUnfolder]: 9/187 cut-off events. [2023-08-31 11:30:08,151 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 11:30:08,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 187 events. 9/187 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 512 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 154. Up to 10 conditions per place. [2023-08-31 11:30:08,152 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 141 transitions, 314 flow [2023-08-31 11:30:08,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 141 transitions, 314 flow [2023-08-31 11:30:08,154 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:08,154 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 141 transitions, 314 flow [2023-08-31 11:30:08,154 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 141 transitions, 314 flow [2023-08-31 11:30:08,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 141 transitions, 314 flow [2023-08-31 11:30:08,173 INFO L130 PetriNetUnfolder]: 9/187 cut-off events. [2023-08-31 11:30:08,173 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 11:30:08,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 187 events. 9/187 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 512 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 154. Up to 10 conditions per place. [2023-08-31 11:30:08,181 INFO L119 LiptonReduction]: Number of co-enabled transitions 12656 [2023-08-31 11:30:09,326 INFO L134 LiptonReduction]: Checked pairs total: 48761 [2023-08-31 11:30:09,326 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-31 11:30:09,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:09,328 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:09,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:09,335 INFO L130 PetriNetUnfolder]: 0/75 cut-off events. [2023-08-31 11:30:09,335 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 11:30:09,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:09,335 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:09,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:09,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:09,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1571671399, now seen corresponding path program 1 times [2023-08-31 11:30:09,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:09,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419031050] [2023-08-31 11:30:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:09,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:09,369 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:09,386 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:09,386 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:09,386 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:09,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 11:30:09,387 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:09,387 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:09,387 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:09,387 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 11:30:09,411 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:09,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 170 transitions, 385 flow [2023-08-31 11:30:09,436 INFO L130 PetriNetUnfolder]: 11/228 cut-off events. [2023-08-31 11:30:09,436 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 11:30:09,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 228 events. 11/228 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 666 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 200. Up to 12 conditions per place. [2023-08-31 11:30:09,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 170 transitions, 385 flow [2023-08-31 11:30:09,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 170 transitions, 385 flow [2023-08-31 11:30:09,440 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:09,440 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 170 transitions, 385 flow [2023-08-31 11:30:09,440 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 170 transitions, 385 flow [2023-08-31 11:30:09,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 170 transitions, 385 flow [2023-08-31 11:30:09,472 INFO L130 PetriNetUnfolder]: 11/228 cut-off events. [2023-08-31 11:30:09,473 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 11:30:09,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 228 events. 11/228 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 666 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 200. Up to 12 conditions per place. [2023-08-31 11:30:09,485 INFO L119 LiptonReduction]: Number of co-enabled transitions 19880 [2023-08-31 11:30:10,733 INFO L134 LiptonReduction]: Checked pairs total: 81894 [2023-08-31 11:30:10,733 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-31 11:30:10,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:10,736 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:10,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:10,744 INFO L130 PetriNetUnfolder]: 0/98 cut-off events. [2023-08-31 11:30:10,745 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 11:30:10,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:10,745 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:10,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:10,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:10,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1888371180, now seen corresponding path program 1 times [2023-08-31 11:30:10,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:10,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021796953] [2023-08-31 11:30:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:10,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:10,764 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:10,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:10,793 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:10,793 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:10,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 11:30:10,793 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:10,794 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:10,794 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:10,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 11:30:10,821 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:10,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 199 transitions, 458 flow [2023-08-31 11:30:10,863 INFO L130 PetriNetUnfolder]: 13/269 cut-off events. [2023-08-31 11:30:10,863 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 11:30:10,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 269 events. 13/269 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 815 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 249. Up to 14 conditions per place. [2023-08-31 11:30:10,865 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 199 transitions, 458 flow [2023-08-31 11:30:10,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 199 transitions, 458 flow [2023-08-31 11:30:10,867 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:10,867 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 199 transitions, 458 flow [2023-08-31 11:30:10,871 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 199 transitions, 458 flow [2023-08-31 11:30:10,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 199 transitions, 458 flow [2023-08-31 11:30:10,905 INFO L130 PetriNetUnfolder]: 13/269 cut-off events. [2023-08-31 11:30:10,905 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 11:30:10,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 269 events. 13/269 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 815 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 249. Up to 14 conditions per place. [2023-08-31 11:30:10,928 INFO L119 LiptonReduction]: Number of co-enabled transitions 28728 [2023-08-31 11:30:12,299 INFO L134 LiptonReduction]: Checked pairs total: 117206 [2023-08-31 11:30:12,299 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-08-31 11:30:12,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:12,301 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:12,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:12,313 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2023-08-31 11:30:12,313 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 11:30:12,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:12,313 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:12,313 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:12,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:12,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1995635827, now seen corresponding path program 1 times [2023-08-31 11:30:12,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:12,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796397668] [2023-08-31 11:30:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:12,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:12,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:12,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:12,395 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:12,396 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:12,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 11:30:12,396 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:12,397 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:12,399 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:12,399 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 11:30:12,431 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:12,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 228 transitions, 533 flow [2023-08-31 11:30:12,470 INFO L130 PetriNetUnfolder]: 15/310 cut-off events. [2023-08-31 11:30:12,471 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 11:30:12,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 310 events. 15/310 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 980 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 299. Up to 16 conditions per place. [2023-08-31 11:30:12,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 228 transitions, 533 flow [2023-08-31 11:30:12,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 228 transitions, 533 flow [2023-08-31 11:30:12,475 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:12,475 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 228 transitions, 533 flow [2023-08-31 11:30:12,476 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 228 transitions, 533 flow [2023-08-31 11:30:12,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 228 transitions, 533 flow [2023-08-31 11:30:12,514 INFO L130 PetriNetUnfolder]: 15/310 cut-off events. [2023-08-31 11:30:12,514 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 11:30:12,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 310 events. 15/310 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 980 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 299. Up to 16 conditions per place. [2023-08-31 11:30:12,526 INFO L119 LiptonReduction]: Number of co-enabled transitions 39200 [2023-08-31 11:30:14,057 INFO L134 LiptonReduction]: Checked pairs total: 159330 [2023-08-31 11:30:14,058 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-08-31 11:30:14,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:14,062 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:14,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:14,076 INFO L130 PetriNetUnfolder]: 2/146 cut-off events. [2023-08-31 11:30:14,077 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 11:30:14,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:14,077 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:14,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:14,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:14,078 INFO L85 PathProgramCache]: Analyzing trace with hash 322111009, now seen corresponding path program 1 times [2023-08-31 11:30:14,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:14,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695812790] [2023-08-31 11:30:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:14,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:14,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:14,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:14,153 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:14,153 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:14,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 11:30:14,153 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:14,154 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:14,154 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:14,154 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 11:30:14,184 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:14,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 257 transitions, 610 flow [2023-08-31 11:30:14,248 INFO L130 PetriNetUnfolder]: 17/351 cut-off events. [2023-08-31 11:30:14,249 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 11:30:14,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 351 events. 17/351 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1125 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 350. Up to 18 conditions per place. [2023-08-31 11:30:14,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 257 transitions, 610 flow [2023-08-31 11:30:14,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 257 transitions, 610 flow [2023-08-31 11:30:14,255 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:14,255 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 257 transitions, 610 flow [2023-08-31 11:30:14,256 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 257 transitions, 610 flow [2023-08-31 11:30:14,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 257 transitions, 610 flow [2023-08-31 11:30:14,309 INFO L130 PetriNetUnfolder]: 17/351 cut-off events. [2023-08-31 11:30:14,309 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 11:30:14,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 351 events. 17/351 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1125 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 350. Up to 18 conditions per place. [2023-08-31 11:30:14,325 INFO L119 LiptonReduction]: Number of co-enabled transitions 51296 [2023-08-31 11:30:16,055 INFO L134 LiptonReduction]: Checked pairs total: 213699 [2023-08-31 11:30:16,055 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-31 11:30:16,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:16,057 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:16,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:16,074 INFO L130 PetriNetUnfolder]: 2/169 cut-off events. [2023-08-31 11:30:16,075 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 11:30:16,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:16,076 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:16,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:16,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:16,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1493686678, now seen corresponding path program 1 times [2023-08-31 11:30:16,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:16,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595543439] [2023-08-31 11:30:16,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:16,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:16,114 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:16,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:16,147 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:16,147 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:16,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 11:30:16,147 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:16,148 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:16,148 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:16,148 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 11:30:16,180 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:16,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 286 transitions, 689 flow [2023-08-31 11:30:16,244 INFO L130 PetriNetUnfolder]: 19/392 cut-off events. [2023-08-31 11:30:16,245 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 11:30:16,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 392 events. 19/392 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1296 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 402. Up to 20 conditions per place. [2023-08-31 11:30:16,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 286 transitions, 689 flow [2023-08-31 11:30:16,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 286 transitions, 689 flow [2023-08-31 11:30:16,251 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:16,252 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 295 places, 286 transitions, 689 flow [2023-08-31 11:30:16,253 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 295 places, 286 transitions, 689 flow [2023-08-31 11:30:16,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 286 transitions, 689 flow [2023-08-31 11:30:16,318 INFO L130 PetriNetUnfolder]: 19/392 cut-off events. [2023-08-31 11:30:16,319 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 11:30:16,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 392 events. 19/392 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1296 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 402. Up to 20 conditions per place. [2023-08-31 11:30:16,343 INFO L119 LiptonReduction]: Number of co-enabled transitions 65016 [2023-08-31 11:30:18,180 INFO L134 LiptonReduction]: Checked pairs total: 275943 [2023-08-31 11:30:18,180 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-31 11:30:18,181 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:18,182 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:18,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:18,202 INFO L130 PetriNetUnfolder]: 2/192 cut-off events. [2023-08-31 11:30:18,202 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 11:30:18,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:18,203 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:18,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:18,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:18,203 INFO L85 PathProgramCache]: Analyzing trace with hash -309842212, now seen corresponding path program 1 times [2023-08-31 11:30:18,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:18,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110645461] [2023-08-31 11:30:18,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:18,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:18,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:18,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:18,257 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:18,257 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:18,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 11:30:18,257 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:18,260 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:18,260 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:18,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 11:30:18,311 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:18,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 315 transitions, 770 flow [2023-08-31 11:30:18,375 INFO L130 PetriNetUnfolder]: 21/433 cut-off events. [2023-08-31 11:30:18,375 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 11:30:18,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 433 events. 21/433 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1431 event pairs, 0 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 455. Up to 22 conditions per place. [2023-08-31 11:30:18,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 315 transitions, 770 flow [2023-08-31 11:30:18,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 315 transitions, 770 flow [2023-08-31 11:30:18,383 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:18,383 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 315 transitions, 770 flow [2023-08-31 11:30:18,384 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 315 transitions, 770 flow [2023-08-31 11:30:18,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 315 transitions, 770 flow [2023-08-31 11:30:18,447 INFO L130 PetriNetUnfolder]: 21/433 cut-off events. [2023-08-31 11:30:18,447 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 11:30:18,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 433 events. 21/433 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1431 event pairs, 0 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 455. Up to 22 conditions per place. [2023-08-31 11:30:18,471 INFO L119 LiptonReduction]: Number of co-enabled transitions 80360 [2023-08-31 11:30:20,228 INFO L134 LiptonReduction]: Checked pairs total: 334599 [2023-08-31 11:30:20,228 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-31 11:30:20,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:20,230 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:20,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:20,252 INFO L130 PetriNetUnfolder]: 4/217 cut-off events. [2023-08-31 11:30:20,253 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 11:30:20,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:20,253 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:20,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:20,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:20,254 INFO L85 PathProgramCache]: Analyzing trace with hash -278901915, now seen corresponding path program 1 times [2023-08-31 11:30:20,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:20,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075298106] [2023-08-31 11:30:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:20,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:20,269 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:20,282 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:20,282 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:20,283 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:20,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 11:30:20,283 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:20,283 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:20,284 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:20,284 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 11:30:20,314 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:20,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 344 transitions, 853 flow [2023-08-31 11:30:20,426 INFO L130 PetriNetUnfolder]: 23/474 cut-off events. [2023-08-31 11:30:20,426 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 11:30:20,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 474 events. 23/474 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1581 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 509. Up to 24 conditions per place. [2023-08-31 11:30:20,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 344 transitions, 853 flow [2023-08-31 11:30:20,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 355 places, 344 transitions, 853 flow [2023-08-31 11:30:20,435 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:20,435 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 355 places, 344 transitions, 853 flow [2023-08-31 11:30:20,435 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 355 places, 344 transitions, 853 flow [2023-08-31 11:30:20,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 344 transitions, 853 flow [2023-08-31 11:30:20,518 INFO L130 PetriNetUnfolder]: 23/474 cut-off events. [2023-08-31 11:30:20,518 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 11:30:20,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 474 events. 23/474 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1581 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 509. Up to 24 conditions per place. [2023-08-31 11:30:20,545 INFO L119 LiptonReduction]: Number of co-enabled transitions 97328 [2023-08-31 11:30:22,476 INFO L134 LiptonReduction]: Checked pairs total: 412014 [2023-08-31 11:30:22,476 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-08-31 11:30:22,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:22,478 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:22,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:22,506 INFO L130 PetriNetUnfolder]: 6/242 cut-off events. [2023-08-31 11:30:22,506 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 11:30:22,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:22,507 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:22,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:22,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash 979702833, now seen corresponding path program 1 times [2023-08-31 11:30:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:22,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504419366] [2023-08-31 11:30:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:22,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:22,526 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:22,540 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:22,540 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:22,540 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:22,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 11:30:22,541 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:22,541 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:22,541 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:22,541 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 11:30:22,575 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:22,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 385 places, 373 transitions, 938 flow [2023-08-31 11:30:22,665 INFO L130 PetriNetUnfolder]: 25/515 cut-off events. [2023-08-31 11:30:22,665 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 11:30:22,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 515 events. 25/515 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1751 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 564. Up to 26 conditions per place. [2023-08-31 11:30:22,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 385 places, 373 transitions, 938 flow [2023-08-31 11:30:22,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 385 places, 373 transitions, 938 flow [2023-08-31 11:30:22,676 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:22,676 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 385 places, 373 transitions, 938 flow [2023-08-31 11:30:22,676 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 385 places, 373 transitions, 938 flow [2023-08-31 11:30:22,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 385 places, 373 transitions, 938 flow [2023-08-31 11:30:22,776 INFO L130 PetriNetUnfolder]: 25/515 cut-off events. [2023-08-31 11:30:22,776 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 11:30:22,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 515 events. 25/515 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1751 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 564. Up to 26 conditions per place. [2023-08-31 11:30:22,807 INFO L119 LiptonReduction]: Number of co-enabled transitions 115920 [2023-08-31 11:30:25,038 INFO L134 LiptonReduction]: Checked pairs total: 483335 [2023-08-31 11:30:25,038 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-08-31 11:30:25,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:25,039 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:25,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:25,073 INFO L130 PetriNetUnfolder]: 7/266 cut-off events. [2023-08-31 11:30:25,074 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 11:30:25,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:25,074 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:25,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:25,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:25,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1191175739, now seen corresponding path program 1 times [2023-08-31 11:30:25,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:25,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200016447] [2023-08-31 11:30:25,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:25,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:25,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:25,135 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:25,135 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:25,135 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:25,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 11:30:25,136 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:25,138 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:25,138 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:25,138 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 11:30:25,172 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:25,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 402 transitions, 1025 flow [2023-08-31 11:30:25,276 INFO L130 PetriNetUnfolder]: 27/556 cut-off events. [2023-08-31 11:30:25,276 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 11:30:25,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 556 events. 27/556 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1865 event pairs, 0 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 620. Up to 28 conditions per place. [2023-08-31 11:30:25,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 415 places, 402 transitions, 1025 flow [2023-08-31 11:30:25,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 415 places, 402 transitions, 1025 flow [2023-08-31 11:30:25,288 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:25,289 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 415 places, 402 transitions, 1025 flow [2023-08-31 11:30:25,289 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 415 places, 402 transitions, 1025 flow [2023-08-31 11:30:25,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 402 transitions, 1025 flow [2023-08-31 11:30:25,388 INFO L130 PetriNetUnfolder]: 27/556 cut-off events. [2023-08-31 11:30:25,389 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 11:30:25,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 556 events. 27/556 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1865 event pairs, 0 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 620. Up to 28 conditions per place. [2023-08-31 11:30:25,427 INFO L119 LiptonReduction]: Number of co-enabled transitions 136136 [2023-08-31 11:30:27,632 INFO L134 LiptonReduction]: Checked pairs total: 574824 [2023-08-31 11:30:27,632 INFO L136 LiptonReduction]: Total number of compositions: 203 [2023-08-31 11:30:27,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:27,634 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:27,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:27,671 INFO L130 PetriNetUnfolder]: 4/286 cut-off events. [2023-08-31 11:30:27,671 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 11:30:27,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:27,671 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:27,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:27,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:27,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1622315681, now seen corresponding path program 1 times [2023-08-31 11:30:27,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:27,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347982381] [2023-08-31 11:30:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:27,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:27,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:27,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:27,707 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:27,707 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:27,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 11:30:27,707 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:27,708 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:27,708 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:27,708 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-31 11:30:27,745 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:27,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 445 places, 431 transitions, 1114 flow [2023-08-31 11:30:27,904 INFO L130 PetriNetUnfolder]: 29/597 cut-off events. [2023-08-31 11:30:27,904 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 11:30:27,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 597 events. 29/597 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2013 event pairs, 0 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 677. Up to 30 conditions per place. [2023-08-31 11:30:27,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 445 places, 431 transitions, 1114 flow [2023-08-31 11:30:27,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 445 places, 431 transitions, 1114 flow [2023-08-31 11:30:27,919 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:27,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 445 places, 431 transitions, 1114 flow [2023-08-31 11:30:27,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 445 places, 431 transitions, 1114 flow [2023-08-31 11:30:27,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 445 places, 431 transitions, 1114 flow [2023-08-31 11:30:28,048 INFO L130 PetriNetUnfolder]: 29/597 cut-off events. [2023-08-31 11:30:28,049 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 11:30:28,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 597 events. 29/597 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2013 event pairs, 0 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 677. Up to 30 conditions per place. [2023-08-31 11:30:28,095 INFO L119 LiptonReduction]: Number of co-enabled transitions 157976 [2023-08-31 11:30:30,385 INFO L134 LiptonReduction]: Checked pairs total: 664694 [2023-08-31 11:30:30,385 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-08-31 11:30:30,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:30,387 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:30,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:30,441 INFO L130 PetriNetUnfolder]: 5/310 cut-off events. [2023-08-31 11:30:30,441 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 11:30:30,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:30,442 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:30,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:30,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:30,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1056879773, now seen corresponding path program 1 times [2023-08-31 11:30:30,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:30,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12829883] [2023-08-31 11:30:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:30,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:30,470 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:30,503 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:30,504 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:30,504 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:30,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 11:30:30,504 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:30,505 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:30,505 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:30,505 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-08-31 11:30:30,550 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:30,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 475 places, 460 transitions, 1205 flow [2023-08-31 11:30:30,682 INFO L130 PetriNetUnfolder]: 31/638 cut-off events. [2023-08-31 11:30:30,682 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 11:30:30,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 638 events. 31/638 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2191 event pairs, 0 based on Foata normal form. 0/486 useless extension candidates. Maximal degree in co-relation 735. Up to 32 conditions per place. [2023-08-31 11:30:30,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 475 places, 460 transitions, 1205 flow [2023-08-31 11:30:30,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 475 places, 460 transitions, 1205 flow [2023-08-31 11:30:30,700 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:30,700 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 475 places, 460 transitions, 1205 flow [2023-08-31 11:30:30,700 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 475 places, 460 transitions, 1205 flow [2023-08-31 11:30:30,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 475 places, 460 transitions, 1205 flow [2023-08-31 11:30:30,853 INFO L130 PetriNetUnfolder]: 31/638 cut-off events. [2023-08-31 11:30:30,854 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 11:30:30,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 638 events. 31/638 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2191 event pairs, 0 based on Foata normal form. 0/486 useless extension candidates. Maximal degree in co-relation 735. Up to 32 conditions per place. [2023-08-31 11:30:30,903 INFO L119 LiptonReduction]: Number of co-enabled transitions 181440 [2023-08-31 11:30:33,506 INFO L134 LiptonReduction]: Checked pairs total: 775228 [2023-08-31 11:30:33,506 INFO L136 LiptonReduction]: Total number of compositions: 229 [2023-08-31 11:30:33,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:33,508 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:33,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:33,548 INFO L130 PetriNetUnfolder]: 6/334 cut-off events. [2023-08-31 11:30:33,548 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 11:30:33,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:33,549 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:33,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:33,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash 777566406, now seen corresponding path program 1 times [2023-08-31 11:30:33,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:33,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623318822] [2023-08-31 11:30:33,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:33,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:33,569 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:33,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:33,596 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:33,597 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:33,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 11:30:33,598 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:33,598 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:33,598 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:33,598 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-08-31 11:30:33,641 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:33,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 505 places, 489 transitions, 1298 flow [2023-08-31 11:30:33,805 INFO L130 PetriNetUnfolder]: 33/679 cut-off events. [2023-08-31 11:30:33,805 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 11:30:33,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 679 events. 33/679 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2319 event pairs, 0 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 794. Up to 34 conditions per place. [2023-08-31 11:30:33,817 INFO L82 GeneralOperation]: Start removeDead. Operand has 505 places, 489 transitions, 1298 flow [2023-08-31 11:30:33,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 505 places, 489 transitions, 1298 flow [2023-08-31 11:30:33,821 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:33,821 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 505 places, 489 transitions, 1298 flow [2023-08-31 11:30:33,821 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 505 places, 489 transitions, 1298 flow [2023-08-31 11:30:33,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 505 places, 489 transitions, 1298 flow [2023-08-31 11:30:33,966 INFO L130 PetriNetUnfolder]: 33/679 cut-off events. [2023-08-31 11:30:33,967 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 11:30:33,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 679 events. 33/679 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2319 event pairs, 0 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 794. Up to 34 conditions per place. [2023-08-31 11:30:34,027 INFO L119 LiptonReduction]: Number of co-enabled transitions 206528 [2023-08-31 11:30:36,552 INFO L134 LiptonReduction]: Checked pairs total: 869971 [2023-08-31 11:30:36,552 INFO L136 LiptonReduction]: Total number of compositions: 240 [2023-08-31 11:30:36,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:36,553 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:36,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:36,608 INFO L130 PetriNetUnfolder]: 9/360 cut-off events. [2023-08-31 11:30:36,608 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 11:30:36,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:36,608 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:36,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:36,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash -835856877, now seen corresponding path program 1 times [2023-08-31 11:30:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:36,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891911606] [2023-08-31 11:30:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:36,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:36,630 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:36,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:36,652 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:36,652 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:36,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 11:30:36,653 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:36,653 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:36,653 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:36,653 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-08-31 11:30:36,698 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:36,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 535 places, 518 transitions, 1393 flow [2023-08-31 11:30:36,853 INFO L130 PetriNetUnfolder]: 35/720 cut-off events. [2023-08-31 11:30:36,853 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 11:30:36,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 720 events. 35/720 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2471 event pairs, 0 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 854. Up to 36 conditions per place. [2023-08-31 11:30:36,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 535 places, 518 transitions, 1393 flow [2023-08-31 11:30:36,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 535 places, 518 transitions, 1393 flow [2023-08-31 11:30:36,868 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:36,868 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 535 places, 518 transitions, 1393 flow [2023-08-31 11:30:36,869 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 535 places, 518 transitions, 1393 flow [2023-08-31 11:30:36,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 535 places, 518 transitions, 1393 flow [2023-08-31 11:30:37,077 INFO L130 PetriNetUnfolder]: 35/720 cut-off events. [2023-08-31 11:30:37,077 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 11:30:37,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 720 events. 35/720 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2471 event pairs, 0 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 854. Up to 36 conditions per place. [2023-08-31 11:30:37,135 INFO L119 LiptonReduction]: Number of co-enabled transitions 233240 [2023-08-31 11:30:39,899 INFO L134 LiptonReduction]: Checked pairs total: 1003048 [2023-08-31 11:30:39,899 INFO L136 LiptonReduction]: Total number of compositions: 263 [2023-08-31 11:30:39,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:39,901 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:39,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:39,953 INFO L130 PetriNetUnfolder]: 4/378 cut-off events. [2023-08-31 11:30:39,954 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 11:30:39,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:39,954 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:39,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:39,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:39,955 INFO L85 PathProgramCache]: Analyzing trace with hash 86663779, now seen corresponding path program 1 times [2023-08-31 11:30:39,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:39,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398651075] [2023-08-31 11:30:39,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:39,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:39,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:40,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:40,002 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:40,002 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:40,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 11:30:40,002 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:40,003 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:40,003 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:40,003 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-08-31 11:30:40,048 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:40,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 565 places, 547 transitions, 1490 flow [2023-08-31 11:30:40,218 INFO L130 PetriNetUnfolder]: 37/761 cut-off events. [2023-08-31 11:30:40,218 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 11:30:40,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 761 events. 37/761 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2623 event pairs, 0 based on Foata normal form. 0/579 useless extension candidates. Maximal degree in co-relation 915. Up to 38 conditions per place. [2023-08-31 11:30:40,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 565 places, 547 transitions, 1490 flow [2023-08-31 11:30:40,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 565 places, 547 transitions, 1490 flow [2023-08-31 11:30:40,232 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:40,232 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 565 places, 547 transitions, 1490 flow [2023-08-31 11:30:40,232 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 565 places, 547 transitions, 1490 flow [2023-08-31 11:30:40,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 565 places, 547 transitions, 1490 flow [2023-08-31 11:30:40,392 INFO L130 PetriNetUnfolder]: 37/761 cut-off events. [2023-08-31 11:30:40,392 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 11:30:40,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 761 events. 37/761 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2623 event pairs, 0 based on Foata normal form. 0/579 useless extension candidates. Maximal degree in co-relation 915. Up to 38 conditions per place. [2023-08-31 11:30:40,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 261576 [2023-08-31 11:30:43,363 INFO L134 LiptonReduction]: Checked pairs total: 1118635 [2023-08-31 11:30:43,363 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-08-31 11:30:43,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:43,365 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:43,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:43,454 INFO L130 PetriNetUnfolder]: 6/403 cut-off events. [2023-08-31 11:30:43,455 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 11:30:43,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:43,455 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:43,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:43,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:43,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1816769213, now seen corresponding path program 1 times [2023-08-31 11:30:43,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:43,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097115298] [2023-08-31 11:30:43,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:43,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:43,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:43,514 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:43,516 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:43,516 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:43,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 11:30:43,517 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:43,518 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:43,518 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:43,518 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-08-31 11:30:43,575 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:43,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 595 places, 576 transitions, 1589 flow [2023-08-31 11:30:43,758 INFO L130 PetriNetUnfolder]: 39/802 cut-off events. [2023-08-31 11:30:43,758 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 11:30:43,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 802 events. 39/802 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2776 event pairs, 0 based on Foata normal form. 0/610 useless extension candidates. Maximal degree in co-relation 977. Up to 40 conditions per place. [2023-08-31 11:30:43,773 INFO L82 GeneralOperation]: Start removeDead. Operand has 595 places, 576 transitions, 1589 flow [2023-08-31 11:30:43,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 595 places, 576 transitions, 1589 flow [2023-08-31 11:30:43,778 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:43,779 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 595 places, 576 transitions, 1589 flow [2023-08-31 11:30:43,779 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 595 places, 576 transitions, 1589 flow [2023-08-31 11:30:43,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 595 places, 576 transitions, 1589 flow [2023-08-31 11:30:43,958 INFO L130 PetriNetUnfolder]: 39/802 cut-off events. [2023-08-31 11:30:43,958 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 11:30:43,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 802 events. 39/802 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2776 event pairs, 0 based on Foata normal form. 0/610 useless extension candidates. Maximal degree in co-relation 977. Up to 40 conditions per place. [2023-08-31 11:30:44,019 INFO L119 LiptonReduction]: Number of co-enabled transitions 291536 [2023-08-31 11:30:47,038 INFO L134 LiptonReduction]: Checked pairs total: 1264755 [2023-08-31 11:30:47,039 INFO L136 LiptonReduction]: Total number of compositions: 289 [2023-08-31 11:30:47,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:47,040 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:47,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:47,101 INFO L130 PetriNetUnfolder]: 8/428 cut-off events. [2023-08-31 11:30:47,102 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 11:30:47,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:47,102 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:47,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:47,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:47,102 INFO L85 PathProgramCache]: Analyzing trace with hash 344253875, now seen corresponding path program 1 times [2023-08-31 11:30:47,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:47,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360389022] [2023-08-31 11:30:47,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:47,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:47,126 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:47,149 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:47,149 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:47,149 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:47,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 11:30:47,149 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:47,150 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:47,150 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:47,150 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-08-31 11:30:47,199 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:47,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 625 places, 605 transitions, 1690 flow [2023-08-31 11:30:47,359 INFO L130 PetriNetUnfolder]: 41/843 cut-off events. [2023-08-31 11:30:47,360 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 11:30:47,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 843 events. 41/843 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2937 event pairs, 0 based on Foata normal form. 0/641 useless extension candidates. Maximal degree in co-relation 1040. Up to 42 conditions per place. [2023-08-31 11:30:47,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 625 places, 605 transitions, 1690 flow [2023-08-31 11:30:47,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 625 places, 605 transitions, 1690 flow [2023-08-31 11:30:47,385 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:47,386 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 625 places, 605 transitions, 1690 flow [2023-08-31 11:30:47,386 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 625 places, 605 transitions, 1690 flow [2023-08-31 11:30:47,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 625 places, 605 transitions, 1690 flow [2023-08-31 11:30:47,624 INFO L130 PetriNetUnfolder]: 41/843 cut-off events. [2023-08-31 11:30:47,624 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 11:30:47,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 843 events. 41/843 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2937 event pairs, 0 based on Foata normal form. 0/641 useless extension candidates. Maximal degree in co-relation 1040. Up to 42 conditions per place. [2023-08-31 11:30:47,684 INFO L119 LiptonReduction]: Number of co-enabled transitions 323120 [2023-08-31 11:30:50,942 INFO L134 LiptonReduction]: Checked pairs total: 1391413 [2023-08-31 11:30:50,942 INFO L136 LiptonReduction]: Total number of compositions: 296 [2023-08-31 11:30:50,943 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:50,944 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:50,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:51,006 INFO L130 PetriNetUnfolder]: 12/455 cut-off events. [2023-08-31 11:30:51,007 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 11:30:51,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:51,007 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:51,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:51,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:51,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1353517721, now seen corresponding path program 1 times [2023-08-31 11:30:51,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:51,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651612148] [2023-08-31 11:30:51,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:51,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:51,040 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:51,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:51,067 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:51,068 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:51,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 11:30:51,068 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:51,068 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:51,068 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:51,069 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-08-31 11:30:51,119 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:51,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 655 places, 634 transitions, 1793 flow [2023-08-31 11:30:51,373 INFO L130 PetriNetUnfolder]: 43/884 cut-off events. [2023-08-31 11:30:51,373 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 11:30:51,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 884 events. 43/884 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3066 event pairs, 0 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 1104. Up to 44 conditions per place. [2023-08-31 11:30:51,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 655 places, 634 transitions, 1793 flow [2023-08-31 11:30:51,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 655 places, 634 transitions, 1793 flow [2023-08-31 11:30:51,400 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:51,400 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 655 places, 634 transitions, 1793 flow [2023-08-31 11:30:51,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 655 places, 634 transitions, 1793 flow [2023-08-31 11:30:51,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 655 places, 634 transitions, 1793 flow [2023-08-31 11:30:51,577 INFO L130 PetriNetUnfolder]: 43/884 cut-off events. [2023-08-31 11:30:51,578 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 11:30:51,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 884 events. 43/884 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3066 event pairs, 0 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 1104. Up to 44 conditions per place. [2023-08-31 11:30:51,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 356328 [2023-08-31 11:30:54,942 INFO L134 LiptonReduction]: Checked pairs total: 1549964 [2023-08-31 11:30:54,942 INFO L136 LiptonReduction]: Total number of compositions: 317 [2023-08-31 11:30:54,943 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:54,944 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:54,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:55,008 INFO L130 PetriNetUnfolder]: 8/474 cut-off events. [2023-08-31 11:30:55,008 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 11:30:55,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:55,009 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:55,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:55,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash 775673475, now seen corresponding path program 1 times [2023-08-31 11:30:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:55,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530603874] [2023-08-31 11:30:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:55,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:55,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:55,091 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:55,091 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:55,091 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:55,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 11:30:55,092 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:55,092 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:55,092 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:55,092 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-08-31 11:30:55,149 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:55,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 685 places, 663 transitions, 1898 flow [2023-08-31 11:30:55,388 INFO L130 PetriNetUnfolder]: 45/925 cut-off events. [2023-08-31 11:30:55,388 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 11:30:55,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 925 events. 45/925 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3246 event pairs, 0 based on Foata normal form. 0/703 useless extension candidates. Maximal degree in co-relation 1169. Up to 46 conditions per place. [2023-08-31 11:30:55,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 685 places, 663 transitions, 1898 flow [2023-08-31 11:30:55,407 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 685 places, 663 transitions, 1898 flow [2023-08-31 11:30:55,407 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:55,407 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 685 places, 663 transitions, 1898 flow [2023-08-31 11:30:55,407 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 685 places, 663 transitions, 1898 flow [2023-08-31 11:30:55,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 685 places, 663 transitions, 1898 flow [2023-08-31 11:30:55,593 INFO L130 PetriNetUnfolder]: 45/925 cut-off events. [2023-08-31 11:30:55,593 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 11:30:55,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 925 events. 45/925 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3246 event pairs, 0 based on Foata normal form. 0/703 useless extension candidates. Maximal degree in co-relation 1169. Up to 46 conditions per place. [2023-08-31 11:30:55,675 INFO L119 LiptonReduction]: Number of co-enabled transitions 391160 [2023-08-31 11:30:59,112 INFO L134 LiptonReduction]: Checked pairs total: 1699084 [2023-08-31 11:30:59,112 INFO L136 LiptonReduction]: Total number of compositions: 330 [2023-08-31 11:30:59,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:30:59,113 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:30:59,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:30:59,183 INFO L130 PetriNetUnfolder]: 10/499 cut-off events. [2023-08-31 11:30:59,183 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 11:30:59,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:30:59,183 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:30:59,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:30:59,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:30:59,183 INFO L85 PathProgramCache]: Analyzing trace with hash 268689632, now seen corresponding path program 1 times [2023-08-31 11:30:59,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:30:59,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676703949] [2023-08-31 11:30:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:30:59,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:30:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:59,209 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:30:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:30:59,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:30:59,238 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:30:59,238 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:30:59,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 11:30:59,238 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:30:59,238 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:30:59,238 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:30:59,239 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-08-31 11:30:59,299 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:30:59,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 715 places, 692 transitions, 2005 flow [2023-08-31 11:30:59,574 INFO L130 PetriNetUnfolder]: 47/966 cut-off events. [2023-08-31 11:30:59,575 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 11:30:59,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 966 events. 47/966 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3399 event pairs, 0 based on Foata normal form. 0/734 useless extension candidates. Maximal degree in co-relation 1235. Up to 48 conditions per place. [2023-08-31 11:30:59,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 715 places, 692 transitions, 2005 flow [2023-08-31 11:30:59,605 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 715 places, 692 transitions, 2005 flow [2023-08-31 11:30:59,605 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:30:59,606 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 715 places, 692 transitions, 2005 flow [2023-08-31 11:30:59,606 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 715 places, 692 transitions, 2005 flow [2023-08-31 11:30:59,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 715 places, 692 transitions, 2005 flow [2023-08-31 11:30:59,903 INFO L130 PetriNetUnfolder]: 47/966 cut-off events. [2023-08-31 11:30:59,904 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 11:30:59,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 966 events. 47/966 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3399 event pairs, 0 based on Foata normal form. 0/734 useless extension candidates. Maximal degree in co-relation 1235. Up to 48 conditions per place. [2023-08-31 11:31:00,001 INFO L119 LiptonReduction]: Number of co-enabled transitions 427616 [2023-08-31 11:31:03,644 INFO L134 LiptonReduction]: Checked pairs total: 1845545 [2023-08-31 11:31:03,644 INFO L136 LiptonReduction]: Total number of compositions: 337 [2023-08-31 11:31:03,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:31:03,645 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:31:03,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:31:03,722 INFO L130 PetriNetUnfolder]: 13/525 cut-off events. [2023-08-31 11:31:03,722 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 11:31:03,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:31:03,723 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:31:03,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:31:03,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:31:03,723 INFO L85 PathProgramCache]: Analyzing trace with hash 375591390, now seen corresponding path program 1 times [2023-08-31 11:31:03,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:31:03,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413773342] [2023-08-31 11:31:03,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:31:03,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:31:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:03,753 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:31:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:03,783 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:31:03,783 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:31:03,784 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:31:03,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-31 11:31:03,784 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:31:03,784 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:31:03,784 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:31:03,785 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-08-31 11:31:03,842 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:31:03,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 745 places, 721 transitions, 2114 flow [2023-08-31 11:31:04,088 INFO L130 PetriNetUnfolder]: 49/1007 cut-off events. [2023-08-31 11:31:04,088 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 11:31:04,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 1007 events. 49/1007 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3560 event pairs, 0 based on Foata normal form. 0/765 useless extension candidates. Maximal degree in co-relation 1302. Up to 50 conditions per place. [2023-08-31 11:31:04,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 745 places, 721 transitions, 2114 flow [2023-08-31 11:31:04,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 745 places, 721 transitions, 2114 flow [2023-08-31 11:31:04,111 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:31:04,111 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 745 places, 721 transitions, 2114 flow [2023-08-31 11:31:04,111 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 745 places, 721 transitions, 2114 flow [2023-08-31 11:31:04,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 745 places, 721 transitions, 2114 flow [2023-08-31 11:31:04,337 INFO L130 PetriNetUnfolder]: 49/1007 cut-off events. [2023-08-31 11:31:04,338 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 11:31:04,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 1007 events. 49/1007 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3560 event pairs, 0 based on Foata normal form. 0/765 useless extension candidates. Maximal degree in co-relation 1302. Up to 50 conditions per place. [2023-08-31 11:31:04,438 INFO L119 LiptonReduction]: Number of co-enabled transitions 465696 [2023-08-31 11:31:08,373 INFO L134 LiptonReduction]: Checked pairs total: 2017853 [2023-08-31 11:31:08,373 INFO L136 LiptonReduction]: Total number of compositions: 354 [2023-08-31 11:31:08,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:31:08,375 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:31:08,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:31:08,496 INFO L130 PetriNetUnfolder]: 12/547 cut-off events. [2023-08-31 11:31:08,496 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 11:31:08,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:31:08,496 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:31:08,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:31:08,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:31:08,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1909469813, now seen corresponding path program 1 times [2023-08-31 11:31:08,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:31:08,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759215486] [2023-08-31 11:31:08,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:31:08,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:31:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:08,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:31:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:08,558 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:31:08,558 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:31:08,558 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:31:08,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-31 11:31:08,558 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:31:08,559 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:31:08,559 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:31:08,559 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-08-31 11:31:08,625 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:31:08,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 775 places, 750 transitions, 2225 flow [2023-08-31 11:31:08,977 INFO L130 PetriNetUnfolder]: 51/1048 cut-off events. [2023-08-31 11:31:08,977 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 11:31:08,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 1048 events. 51/1048 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3690 event pairs, 0 based on Foata normal form. 0/796 useless extension candidates. Maximal degree in co-relation 1370. Up to 52 conditions per place. [2023-08-31 11:31:08,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 775 places, 750 transitions, 2225 flow [2023-08-31 11:31:09,002 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 775 places, 750 transitions, 2225 flow [2023-08-31 11:31:09,002 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:31:09,002 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 775 places, 750 transitions, 2225 flow [2023-08-31 11:31:09,003 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 775 places, 750 transitions, 2225 flow [2023-08-31 11:31:09,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 775 places, 750 transitions, 2225 flow [2023-08-31 11:31:09,246 INFO L130 PetriNetUnfolder]: 51/1048 cut-off events. [2023-08-31 11:31:09,246 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 11:31:09,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 1048 events. 51/1048 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3690 event pairs, 0 based on Foata normal form. 0/796 useless extension candidates. Maximal degree in co-relation 1370. Up to 52 conditions per place. [2023-08-31 11:31:09,356 INFO L119 LiptonReduction]: Number of co-enabled transitions 505400 [2023-08-31 11:31:13,299 INFO L134 LiptonReduction]: Checked pairs total: 2203070 [2023-08-31 11:31:13,299 INFO L136 LiptonReduction]: Total number of compositions: 363 [2023-08-31 11:31:13,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:31:13,301 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:31:13,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:31:13,434 INFO L130 PetriNetUnfolder]: 15/573 cut-off events. [2023-08-31 11:31:13,435 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 11:31:13,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:31:13,435 INFO L208 CegarLoopForPetriNet]: trace histogram [26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:31:13,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:31:13,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:31:13,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1249126535, now seen corresponding path program 1 times [2023-08-31 11:31:13,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:31:13,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467478698] [2023-08-31 11:31:13,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:31:13,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:31:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:13,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:31:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:13,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:31:13,511 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:31:13,511 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:31:13,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-31 11:31:13,512 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:31:13,512 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:31:13,512 WARN L233 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:31:13,512 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2023-08-31 11:31:13,577 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:31:13,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 805 places, 779 transitions, 2338 flow [2023-08-31 11:31:13,981 INFO L130 PetriNetUnfolder]: 53/1089 cut-off events. [2023-08-31 11:31:13,981 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 11:31:14,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 1089 events. 53/1089 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3845 event pairs, 0 based on Foata normal form. 0/827 useless extension candidates. Maximal degree in co-relation 1439. Up to 54 conditions per place. [2023-08-31 11:31:14,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 805 places, 779 transitions, 2338 flow [2023-08-31 11:31:14,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 805 places, 779 transitions, 2338 flow [2023-08-31 11:31:14,011 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:31:14,011 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 805 places, 779 transitions, 2338 flow [2023-08-31 11:31:14,012 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 805 places, 779 transitions, 2338 flow [2023-08-31 11:31:14,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 805 places, 779 transitions, 2338 flow [2023-08-31 11:31:14,297 INFO L130 PetriNetUnfolder]: 53/1089 cut-off events. [2023-08-31 11:31:14,297 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 11:31:14,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 1089 events. 53/1089 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3845 event pairs, 0 based on Foata normal form. 0/827 useless extension candidates. Maximal degree in co-relation 1439. Up to 54 conditions per place. [2023-08-31 11:31:14,421 INFO L119 LiptonReduction]: Number of co-enabled transitions 546728 [2023-08-31 11:31:18,758 INFO L134 LiptonReduction]: Checked pairs total: 2350341 [2023-08-31 11:31:18,759 INFO L136 LiptonReduction]: Total number of compositions: 382 [2023-08-31 11:31:18,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:31:18,760 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:31:18,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:31:18,877 INFO L130 PetriNetUnfolder]: 14/595 cut-off events. [2023-08-31 11:31:18,877 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 11:31:18,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:31:18,877 INFO L208 CegarLoopForPetriNet]: trace histogram [27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:31:18,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:31:18,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:31:18,878 INFO L85 PathProgramCache]: Analyzing trace with hash -855735256, now seen corresponding path program 1 times [2023-08-31 11:31:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:31:18,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303590950] [2023-08-31 11:31:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:31:18,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:31:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:18,910 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:31:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:18,946 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:31:18,947 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:31:18,947 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:31:18,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-31 11:31:18,947 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:31:18,948 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:31:18,948 WARN L233 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:31:18,948 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2023-08-31 11:31:19,016 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:31:19,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 835 places, 808 transitions, 2453 flow [2023-08-31 11:31:19,444 INFO L130 PetriNetUnfolder]: 55/1130 cut-off events. [2023-08-31 11:31:19,444 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 11:31:19,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1590 conditions, 1130 events. 55/1130 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3990 event pairs, 0 based on Foata normal form. 0/858 useless extension candidates. Maximal degree in co-relation 1509. Up to 56 conditions per place. [2023-08-31 11:31:19,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 835 places, 808 transitions, 2453 flow [2023-08-31 11:31:19,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 835 places, 808 transitions, 2453 flow [2023-08-31 11:31:19,472 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:31:19,472 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 835 places, 808 transitions, 2453 flow [2023-08-31 11:31:19,473 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 835 places, 808 transitions, 2453 flow [2023-08-31 11:31:19,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 835 places, 808 transitions, 2453 flow [2023-08-31 11:31:19,768 INFO L130 PetriNetUnfolder]: 55/1130 cut-off events. [2023-08-31 11:31:19,768 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 11:31:19,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1590 conditions, 1130 events. 55/1130 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3990 event pairs, 0 based on Foata normal form. 0/858 useless extension candidates. Maximal degree in co-relation 1509. Up to 56 conditions per place. [2023-08-31 11:31:19,902 INFO L119 LiptonReduction]: Number of co-enabled transitions 589680 [2023-08-31 11:31:24,239 INFO L134 LiptonReduction]: Checked pairs total: 2501732 [2023-08-31 11:31:24,239 INFO L136 LiptonReduction]: Total number of compositions: 399 [2023-08-31 11:31:24,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:31:24,241 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:31:24,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:31:24,383 INFO L130 PetriNetUnfolder]: 11/615 cut-off events. [2023-08-31 11:31:24,383 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 11:31:24,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:31:24,383 INFO L208 CegarLoopForPetriNet]: trace histogram [28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:31:24,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:31:24,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:31:24,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1190744639, now seen corresponding path program 1 times [2023-08-31 11:31:24,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:31:24,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157310740] [2023-08-31 11:31:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:31:24,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:31:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:24,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:31:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:24,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:31:24,454 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:31:24,454 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:31:24,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-31 11:31:24,455 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:31:24,455 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:31:24,455 WARN L233 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:31:24,455 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2023-08-31 11:31:24,522 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:31:24,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 865 places, 837 transitions, 2570 flow [2023-08-31 11:31:24,943 INFO L130 PetriNetUnfolder]: 57/1171 cut-off events. [2023-08-31 11:31:24,944 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 11:31:24,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1662 conditions, 1171 events. 57/1171 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4161 event pairs, 0 based on Foata normal form. 0/889 useless extension candidates. Maximal degree in co-relation 1580. Up to 58 conditions per place. [2023-08-31 11:31:24,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 865 places, 837 transitions, 2570 flow [2023-08-31 11:31:24,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 865 places, 837 transitions, 2570 flow [2023-08-31 11:31:24,973 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:31:24,973 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 865 places, 837 transitions, 2570 flow [2023-08-31 11:31:24,974 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 865 places, 837 transitions, 2570 flow [2023-08-31 11:31:24,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 865 places, 837 transitions, 2570 flow [2023-08-31 11:31:25,293 INFO L130 PetriNetUnfolder]: 57/1171 cut-off events. [2023-08-31 11:31:25,294 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 11:31:25,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1662 conditions, 1171 events. 57/1171 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4161 event pairs, 0 based on Foata normal form. 0/889 useless extension candidates. Maximal degree in co-relation 1580. Up to 58 conditions per place. [2023-08-31 11:31:25,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 634256 [2023-08-31 11:31:29,939 INFO L134 LiptonReduction]: Checked pairs total: 2724237 [2023-08-31 11:31:29,939 INFO L136 LiptonReduction]: Total number of compositions: 418 [2023-08-31 11:31:29,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:31:29,940 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:31:29,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:31:30,052 INFO L130 PetriNetUnfolder]: 10/637 cut-off events. [2023-08-31 11:31:30,053 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 11:31:30,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:31:30,053 INFO L208 CegarLoopForPetriNet]: trace histogram [29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:31:30,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:31:30,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:31:30,053 INFO L85 PathProgramCache]: Analyzing trace with hash -723100061, now seen corresponding path program 1 times [2023-08-31 11:31:30,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:31:30,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736774172] [2023-08-31 11:31:30,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:31:30,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:31:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:30,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:31:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:30,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:31:30,132 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:31:30,133 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:31:30,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-31 11:31:30,133 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:31:30,133 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:31:30,133 WARN L233 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:31:30,134 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2023-08-31 11:31:30,211 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:31:30,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 895 places, 866 transitions, 2689 flow [2023-08-31 11:31:30,694 INFO L130 PetriNetUnfolder]: 59/1212 cut-off events. [2023-08-31 11:31:30,694 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 11:31:30,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1212 events. 59/1212 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4293 event pairs, 0 based on Foata normal form. 0/920 useless extension candidates. Maximal degree in co-relation 1652. Up to 60 conditions per place. [2023-08-31 11:31:30,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 895 places, 866 transitions, 2689 flow [2023-08-31 11:31:30,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 895 places, 866 transitions, 2689 flow [2023-08-31 11:31:30,727 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:31:30,727 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 895 places, 866 transitions, 2689 flow [2023-08-31 11:31:30,728 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 895 places, 866 transitions, 2689 flow [2023-08-31 11:31:30,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 895 places, 866 transitions, 2689 flow [2023-08-31 11:31:31,060 INFO L130 PetriNetUnfolder]: 59/1212 cut-off events. [2023-08-31 11:31:31,060 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 11:31:31,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1212 events. 59/1212 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4293 event pairs, 0 based on Foata normal form. 0/920 useless extension candidates. Maximal degree in co-relation 1652. Up to 60 conditions per place. [2023-08-31 11:31:31,226 INFO L119 LiptonReduction]: Number of co-enabled transitions 680456 [2023-08-31 11:31:35,861 INFO L134 LiptonReduction]: Checked pairs total: 2914232 [2023-08-31 11:31:35,861 INFO L136 LiptonReduction]: Total number of compositions: 433 [2023-08-31 11:31:35,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:31:35,863 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:31:35,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:31:35,987 INFO L130 PetriNetUnfolder]: 11/661 cut-off events. [2023-08-31 11:31:35,987 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 11:31:35,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:31:35,987 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:31:35,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:31:35,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:31:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash -921461999, now seen corresponding path program 1 times [2023-08-31 11:31:35,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:31:35,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951028262] [2023-08-31 11:31:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:31:35,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:31:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:36,020 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:31:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:36,061 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:31:36,061 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:31:36,061 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:31:36,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-31 11:31:36,062 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:31:36,062 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:31:36,062 WARN L233 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:31:36,062 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2023-08-31 11:31:36,130 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:31:36,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 925 places, 895 transitions, 2810 flow [2023-08-31 11:31:36,560 INFO L130 PetriNetUnfolder]: 61/1253 cut-off events. [2023-08-31 11:31:36,560 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 11:31:36,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 1253 events. 61/1253 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4448 event pairs, 0 based on Foata normal form. 0/951 useless extension candidates. Maximal degree in co-relation 1725. Up to 62 conditions per place. [2023-08-31 11:31:36,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 925 places, 895 transitions, 2810 flow [2023-08-31 11:31:36,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 925 places, 895 transitions, 2810 flow [2023-08-31 11:31:36,602 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:31:36,602 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 925 places, 895 transitions, 2810 flow [2023-08-31 11:31:36,602 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 925 places, 895 transitions, 2810 flow [2023-08-31 11:31:36,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 925 places, 895 transitions, 2810 flow [2023-08-31 11:31:36,986 INFO L130 PetriNetUnfolder]: 61/1253 cut-off events. [2023-08-31 11:31:36,986 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 11:31:37,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 1253 events. 61/1253 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4448 event pairs, 0 based on Foata normal form. 0/951 useless extension candidates. Maximal degree in co-relation 1725. Up to 62 conditions per place. [2023-08-31 11:31:37,145 INFO L119 LiptonReduction]: Number of co-enabled transitions 728280 [2023-08-31 11:31:41,865 INFO L134 LiptonReduction]: Checked pairs total: 3062878 [2023-08-31 11:31:41,865 INFO L136 LiptonReduction]: Total number of compositions: 432 [2023-08-31 11:31:41,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:31:41,867 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:31:41,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:31:41,997 INFO L130 PetriNetUnfolder]: 18/691 cut-off events. [2023-08-31 11:31:41,997 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 11:31:41,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:31:41,998 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:31:41,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:31:41,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:31:41,998 INFO L85 PathProgramCache]: Analyzing trace with hash 966756473, now seen corresponding path program 1 times [2023-08-31 11:31:41,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:31:41,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775404526] [2023-08-31 11:31:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:31:41,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:31:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:42,034 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:31:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:42,072 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:31:42,072 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:31:42,072 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:31:42,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-31 11:31:42,073 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:31:42,073 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:31:42,073 WARN L233 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:31:42,073 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2023-08-31 11:31:42,146 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:31:42,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 955 places, 924 transitions, 2933 flow [2023-08-31 11:31:42,580 INFO L130 PetriNetUnfolder]: 63/1294 cut-off events. [2023-08-31 11:31:42,580 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 11:31:42,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 1294 events. 63/1294 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4585 event pairs, 0 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 1799. Up to 64 conditions per place. [2023-08-31 11:31:42,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 955 places, 924 transitions, 2933 flow [2023-08-31 11:31:42,626 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 955 places, 924 transitions, 2933 flow [2023-08-31 11:31:42,626 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:31:42,626 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 955 places, 924 transitions, 2933 flow [2023-08-31 11:31:42,626 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 955 places, 924 transitions, 2933 flow [2023-08-31 11:31:42,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 955 places, 924 transitions, 2933 flow [2023-08-31 11:31:43,085 INFO L130 PetriNetUnfolder]: 63/1294 cut-off events. [2023-08-31 11:31:43,085 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 11:31:43,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 1294 events. 63/1294 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4585 event pairs, 0 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 1799. Up to 64 conditions per place. [2023-08-31 11:31:43,246 INFO L119 LiptonReduction]: Number of co-enabled transitions 777728 [2023-08-31 11:31:48,174 INFO L134 LiptonReduction]: Checked pairs total: 3369094 [2023-08-31 11:31:48,174 INFO L136 LiptonReduction]: Total number of compositions: 461 [2023-08-31 11:31:48,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:31:48,175 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:31:48,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:31:48,351 INFO L130 PetriNetUnfolder]: 11/707 cut-off events. [2023-08-31 11:31:48,351 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 11:31:48,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:31:48,352 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:31:48,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:31:48,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:31:48,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1375165484, now seen corresponding path program 1 times [2023-08-31 11:31:48,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:31:48,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566618790] [2023-08-31 11:31:48,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:31:48,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:31:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:48,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:31:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:48,444 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:31:48,445 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:31:48,445 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:31:48,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-31 11:31:48,445 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:31:48,446 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:31:48,446 WARN L233 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:31:48,446 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2023-08-31 11:31:48,533 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:31:48,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 985 places, 953 transitions, 3058 flow [2023-08-31 11:31:48,990 INFO L130 PetriNetUnfolder]: 65/1335 cut-off events. [2023-08-31 11:31:48,990 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 11:31:49,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 1335 events. 65/1335 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4738 event pairs, 0 based on Foata normal form. 0/1013 useless extension candidates. Maximal degree in co-relation 1874. Up to 66 conditions per place. [2023-08-31 11:31:49,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 985 places, 953 transitions, 3058 flow [2023-08-31 11:31:49,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 985 places, 953 transitions, 3058 flow [2023-08-31 11:31:49,037 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:31:49,037 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 985 places, 953 transitions, 3058 flow [2023-08-31 11:31:49,037 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 985 places, 953 transitions, 3058 flow [2023-08-31 11:31:49,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 985 places, 953 transitions, 3058 flow [2023-08-31 11:31:49,449 INFO L130 PetriNetUnfolder]: 65/1335 cut-off events. [2023-08-31 11:31:49,450 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 11:31:49,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 1335 events. 65/1335 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4738 event pairs, 0 based on Foata normal form. 0/1013 useless extension candidates. Maximal degree in co-relation 1874. Up to 66 conditions per place. [2023-08-31 11:31:49,763 INFO L119 LiptonReduction]: Number of co-enabled transitions 828800 [2023-08-31 11:31:54,746 INFO L134 LiptonReduction]: Checked pairs total: 3542907 [2023-08-31 11:31:54,746 INFO L136 LiptonReduction]: Total number of compositions: 468 [2023-08-31 11:31:54,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:31:54,748 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:31:54,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:31:54,897 INFO L130 PetriNetUnfolder]: 16/735 cut-off events. [2023-08-31 11:31:54,897 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 11:31:54,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:31:54,897 INFO L208 CegarLoopForPetriNet]: trace histogram [33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:31:54,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:31:54,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:31:54,898 INFO L85 PathProgramCache]: Analyzing trace with hash -602287638, now seen corresponding path program 1 times [2023-08-31 11:31:54,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:31:54,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068980484] [2023-08-31 11:31:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:31:54,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:31:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:54,933 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:31:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:31:54,974 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:31:54,974 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:31:54,975 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:31:54,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-31 11:31:54,975 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:31:54,975 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:31:54,975 WARN L233 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:31:54,975 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2023-08-31 11:31:55,046 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:31:55,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1015 places, 982 transitions, 3185 flow [2023-08-31 11:31:55,519 INFO L130 PetriNetUnfolder]: 67/1376 cut-off events. [2023-08-31 11:31:55,520 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 11:31:55,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 1376 events. 67/1376 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4913 event pairs, 0 based on Foata normal form. 0/1044 useless extension candidates. Maximal degree in co-relation 1950. Up to 68 conditions per place. [2023-08-31 11:31:55,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 1015 places, 982 transitions, 3185 flow [2023-08-31 11:31:55,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1015 places, 982 transitions, 3185 flow [2023-08-31 11:31:55,571 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:31:55,571 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1015 places, 982 transitions, 3185 flow [2023-08-31 11:31:55,571 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1015 places, 982 transitions, 3185 flow [2023-08-31 11:31:55,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1015 places, 982 transitions, 3185 flow [2023-08-31 11:31:56,015 INFO L130 PetriNetUnfolder]: 67/1376 cut-off events. [2023-08-31 11:31:56,015 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 11:31:56,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 1376 events. 67/1376 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4913 event pairs, 0 based on Foata normal form. 0/1044 useless extension candidates. Maximal degree in co-relation 1950. Up to 68 conditions per place. [2023-08-31 11:31:56,236 INFO L119 LiptonReduction]: Number of co-enabled transitions 881496 [2023-08-31 11:32:01,442 INFO L134 LiptonReduction]: Checked pairs total: 3764005 [2023-08-31 11:32:01,442 INFO L136 LiptonReduction]: Total number of compositions: 485 [2023-08-31 11:32:01,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:32:01,443 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:32:01,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:32:01,603 INFO L130 PetriNetUnfolder]: 15/757 cut-off events. [2023-08-31 11:32:01,603 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 11:32:01,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:32:01,603 INFO L208 CegarLoopForPetriNet]: trace histogram [34, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:32:01,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:32:01,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:32:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash 172831030, now seen corresponding path program 1 times [2023-08-31 11:32:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:32:01,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889317710] [2023-08-31 11:32:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:32:01,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:32:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:01,637 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:32:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:01,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:32:01,685 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:32:01,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:32:01,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-31 11:32:01,686 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:32:01,686 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:32:01,686 WARN L233 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:32:01,686 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2023-08-31 11:32:01,762 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:32:01,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1045 places, 1011 transitions, 3314 flow [2023-08-31 11:32:02,285 INFO L130 PetriNetUnfolder]: 69/1417 cut-off events. [2023-08-31 11:32:02,285 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 11:32:02,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2115 conditions, 1417 events. 69/1417 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5064 event pairs, 0 based on Foata normal form. 0/1075 useless extension candidates. Maximal degree in co-relation 2027. Up to 70 conditions per place. [2023-08-31 11:32:02,321 INFO L82 GeneralOperation]: Start removeDead. Operand has 1045 places, 1011 transitions, 3314 flow [2023-08-31 11:32:02,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1045 places, 1011 transitions, 3314 flow [2023-08-31 11:32:02,328 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:32:02,328 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1045 places, 1011 transitions, 3314 flow [2023-08-31 11:32:02,329 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1045 places, 1011 transitions, 3314 flow [2023-08-31 11:32:02,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1045 places, 1011 transitions, 3314 flow [2023-08-31 11:32:02,787 INFO L130 PetriNetUnfolder]: 69/1417 cut-off events. [2023-08-31 11:32:02,787 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 11:32:02,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2115 conditions, 1417 events. 69/1417 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5064 event pairs, 0 based on Foata normal form. 0/1075 useless extension candidates. Maximal degree in co-relation 2027. Up to 70 conditions per place. [2023-08-31 11:32:03,024 INFO L119 LiptonReduction]: Number of co-enabled transitions 935816 [2023-08-31 11:32:08,460 INFO L134 LiptonReduction]: Checked pairs total: 3957394 [2023-08-31 11:32:08,460 INFO L136 LiptonReduction]: Total number of compositions: 486 [2023-08-31 11:32:08,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:32:08,461 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:32:08,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:32:08,637 INFO L130 PetriNetUnfolder]: 22/787 cut-off events. [2023-08-31 11:32:08,637 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 11:32:08,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:32:08,638 INFO L208 CegarLoopForPetriNet]: trace histogram [35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:32:08,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:32:08,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:32:08,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1411003495, now seen corresponding path program 1 times [2023-08-31 11:32:08,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:32:08,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35102007] [2023-08-31 11:32:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:32:08,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:32:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:08,676 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:32:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:08,724 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:32:08,725 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:32:08,725 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:32:08,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-31 11:32:08,725 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:32:08,725 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:32:08,726 WARN L233 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:32:08,726 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2023-08-31 11:32:08,805 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:32:08,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1075 places, 1040 transitions, 3445 flow [2023-08-31 11:32:09,616 INFO L130 PetriNetUnfolder]: 71/1458 cut-off events. [2023-08-31 11:32:09,616 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 11:32:09,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2194 conditions, 1458 events. 71/1458 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5211 event pairs, 0 based on Foata normal form. 0/1106 useless extension candidates. Maximal degree in co-relation 2105. Up to 72 conditions per place. [2023-08-31 11:32:09,673 INFO L82 GeneralOperation]: Start removeDead. Operand has 1075 places, 1040 transitions, 3445 flow [2023-08-31 11:32:09,683 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1075 places, 1040 transitions, 3445 flow [2023-08-31 11:32:09,684 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:32:09,684 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1075 places, 1040 transitions, 3445 flow [2023-08-31 11:32:09,684 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1075 places, 1040 transitions, 3445 flow [2023-08-31 11:32:09,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1075 places, 1040 transitions, 3445 flow [2023-08-31 11:32:10,191 INFO L130 PetriNetUnfolder]: 71/1458 cut-off events. [2023-08-31 11:32:10,191 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 11:32:10,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2194 conditions, 1458 events. 71/1458 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5211 event pairs, 0 based on Foata normal form. 0/1106 useless extension candidates. Maximal degree in co-relation 2105. Up to 72 conditions per place. [2023-08-31 11:32:10,444 INFO L119 LiptonReduction]: Number of co-enabled transitions 991760 [2023-08-31 11:32:16,258 INFO L134 LiptonReduction]: Checked pairs total: 4287924 [2023-08-31 11:32:16,259 INFO L136 LiptonReduction]: Total number of compositions: 507 [2023-08-31 11:32:16,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:32:16,260 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:32:16,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:32:16,439 INFO L130 PetriNetUnfolder]: 18/806 cut-off events. [2023-08-31 11:32:16,440 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 11:32:16,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:32:16,440 INFO L208 CegarLoopForPetriNet]: trace histogram [36, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:32:16,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:32:16,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:32:16,440 INFO L85 PathProgramCache]: Analyzing trace with hash 832319220, now seen corresponding path program 1 times [2023-08-31 11:32:16,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:32:16,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513634119] [2023-08-31 11:32:16,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:32:16,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:32:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:16,485 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:32:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:16,536 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:32:16,536 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:32:16,537 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:32:16,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-31 11:32:16,537 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:32:16,537 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:32:16,537 WARN L233 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:32:16,537 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2023-08-31 11:32:16,640 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:32:16,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1105 places, 1069 transitions, 3578 flow [2023-08-31 11:32:17,314 INFO L130 PetriNetUnfolder]: 73/1499 cut-off events. [2023-08-31 11:32:17,315 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 11:32:17,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 1499 events. 73/1499 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5355 event pairs, 0 based on Foata normal form. 0/1137 useless extension candidates. Maximal degree in co-relation 2184. Up to 74 conditions per place. [2023-08-31 11:32:17,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 1105 places, 1069 transitions, 3578 flow [2023-08-31 11:32:17,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1105 places, 1069 transitions, 3578 flow [2023-08-31 11:32:17,369 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:32:17,369 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1105 places, 1069 transitions, 3578 flow [2023-08-31 11:32:17,369 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1105 places, 1069 transitions, 3578 flow [2023-08-31 11:32:17,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1105 places, 1069 transitions, 3578 flow [2023-08-31 11:32:17,879 INFO L130 PetriNetUnfolder]: 73/1499 cut-off events. [2023-08-31 11:32:17,879 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 11:32:17,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 1499 events. 73/1499 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5355 event pairs, 0 based on Foata normal form. 0/1137 useless extension candidates. Maximal degree in co-relation 2184. Up to 74 conditions per place. [2023-08-31 11:32:18,147 INFO L119 LiptonReduction]: Number of co-enabled transitions 1049328 [2023-08-31 11:32:24,129 INFO L134 LiptonReduction]: Checked pairs total: 4504871 [2023-08-31 11:32:24,129 INFO L136 LiptonReduction]: Total number of compositions: 516 [2023-08-31 11:32:24,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:32:24,130 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:32:24,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:32:24,322 INFO L130 PetriNetUnfolder]: 21/832 cut-off events. [2023-08-31 11:32:24,322 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 11:32:24,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:32:24,322 INFO L208 CegarLoopForPetriNet]: trace histogram [37, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:32:24,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:32:24,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:32:24,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1301726333, now seen corresponding path program 1 times [2023-08-31 11:32:24,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:32:24,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028292507] [2023-08-31 11:32:24,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:32:24,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:32:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:24,360 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:32:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:24,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:32:24,410 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:32:24,410 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:32:24,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-31 11:32:24,410 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:32:24,411 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:32:24,411 WARN L233 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:32:24,411 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2023-08-31 11:32:24,498 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:32:24,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1135 places, 1098 transitions, 3713 flow [2023-08-31 11:32:25,136 INFO L130 PetriNetUnfolder]: 75/1540 cut-off events. [2023-08-31 11:32:25,136 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 11:32:25,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 1540 events. 75/1540 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5477 event pairs, 0 based on Foata normal form. 0/1168 useless extension candidates. Maximal degree in co-relation 2264. Up to 76 conditions per place. [2023-08-31 11:32:25,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 1135 places, 1098 transitions, 3713 flow [2023-08-31 11:32:25,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1135 places, 1098 transitions, 3713 flow [2023-08-31 11:32:25,186 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:32:25,186 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1135 places, 1098 transitions, 3713 flow [2023-08-31 11:32:25,187 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1135 places, 1098 transitions, 3713 flow [2023-08-31 11:32:25,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1135 places, 1098 transitions, 3713 flow [2023-08-31 11:32:25,742 INFO L130 PetriNetUnfolder]: 75/1540 cut-off events. [2023-08-31 11:32:25,742 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 11:32:25,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 1540 events. 75/1540 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5477 event pairs, 0 based on Foata normal form. 0/1168 useless extension candidates. Maximal degree in co-relation 2264. Up to 76 conditions per place. [2023-08-31 11:32:26,035 INFO L119 LiptonReduction]: Number of co-enabled transitions 1108520 [2023-08-31 11:32:32,046 INFO L134 LiptonReduction]: Checked pairs total: 4832283 [2023-08-31 11:32:32,046 INFO L136 LiptonReduction]: Total number of compositions: 543 [2023-08-31 11:32:32,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:32:32,047 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:32:32,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:32:32,254 INFO L130 PetriNetUnfolder]: 15/849 cut-off events. [2023-08-31 11:32:32,254 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 11:32:32,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:32:32,254 INFO L208 CegarLoopForPetriNet]: trace histogram [38, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:32:32,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:32:32,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:32:32,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1702219711, now seen corresponding path program 1 times [2023-08-31 11:32:32,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:32:32,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692940389] [2023-08-31 11:32:32,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:32:32,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:32:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:32,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:32:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:32,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:32:32,344 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:32:32,344 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:32:32,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-31 11:32:32,345 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:32:32,345 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:32:32,345 WARN L233 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:32:32,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2023-08-31 11:32:32,428 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:32:32,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1165 places, 1127 transitions, 3850 flow [2023-08-31 11:32:33,185 INFO L130 PetriNetUnfolder]: 77/1581 cut-off events. [2023-08-31 11:32:33,185 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 11:32:33,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2437 conditions, 1581 events. 77/1581 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5679 event pairs, 0 based on Foata normal form. 0/1199 useless extension candidates. Maximal degree in co-relation 2345. Up to 78 conditions per place. [2023-08-31 11:32:33,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 1165 places, 1127 transitions, 3850 flow [2023-08-31 11:32:33,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1165 places, 1127 transitions, 3850 flow [2023-08-31 11:32:33,239 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:32:33,239 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1165 places, 1127 transitions, 3850 flow [2023-08-31 11:32:33,239 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1165 places, 1127 transitions, 3850 flow [2023-08-31 11:32:33,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1165 places, 1127 transitions, 3850 flow [2023-08-31 11:32:33,823 INFO L130 PetriNetUnfolder]: 77/1581 cut-off events. [2023-08-31 11:32:33,823 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 11:32:33,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2437 conditions, 1581 events. 77/1581 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5679 event pairs, 0 based on Foata normal form. 0/1199 useless extension candidates. Maximal degree in co-relation 2345. Up to 78 conditions per place. [2023-08-31 11:32:34,128 INFO L119 LiptonReduction]: Number of co-enabled transitions 1169336 [2023-08-31 11:32:40,353 INFO L134 LiptonReduction]: Checked pairs total: 5048404 [2023-08-31 11:32:40,353 INFO L136 LiptonReduction]: Total number of compositions: 560 [2023-08-31 11:32:40,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:32:40,354 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:32:40,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:32:40,574 INFO L130 PetriNetUnfolder]: 14/871 cut-off events. [2023-08-31 11:32:40,574 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 11:32:40,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:32:40,574 INFO L208 CegarLoopForPetriNet]: trace histogram [39, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:32:40,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:32:40,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:32:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1915895076, now seen corresponding path program 1 times [2023-08-31 11:32:40,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:32:40,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233159988] [2023-08-31 11:32:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:32:40,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:32:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:40,614 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:32:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:40,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:32:40,672 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:32:40,673 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:32:40,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-31 11:32:40,673 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:32:40,673 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:32:40,673 WARN L233 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:32:40,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2023-08-31 11:32:40,763 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:32:40,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1195 places, 1156 transitions, 3989 flow [2023-08-31 11:32:41,504 INFO L130 PetriNetUnfolder]: 79/1622 cut-off events. [2023-08-31 11:32:41,505 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 11:32:41,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2520 conditions, 1622 events. 79/1622 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5802 event pairs, 0 based on Foata normal form. 0/1230 useless extension candidates. Maximal degree in co-relation 2427. Up to 80 conditions per place. [2023-08-31 11:32:41,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 1195 places, 1156 transitions, 3989 flow [2023-08-31 11:32:41,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1195 places, 1156 transitions, 3989 flow [2023-08-31 11:32:41,560 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:32:41,560 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1195 places, 1156 transitions, 3989 flow [2023-08-31 11:32:41,560 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1195 places, 1156 transitions, 3989 flow [2023-08-31 11:32:41,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1195 places, 1156 transitions, 3989 flow [2023-08-31 11:32:42,162 INFO L130 PetriNetUnfolder]: 79/1622 cut-off events. [2023-08-31 11:32:42,162 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 11:32:42,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2520 conditions, 1622 events. 79/1622 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5802 event pairs, 0 based on Foata normal form. 0/1230 useless extension candidates. Maximal degree in co-relation 2427. Up to 80 conditions per place. [2023-08-31 11:32:42,491 INFO L119 LiptonReduction]: Number of co-enabled transitions 1231776 [2023-08-31 11:32:49,297 INFO L134 LiptonReduction]: Checked pairs total: 5346003 [2023-08-31 11:32:49,297 INFO L136 LiptonReduction]: Total number of compositions: 565 [2023-08-31 11:32:49,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:32:49,299 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:32:49,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:32:49,534 INFO L130 PetriNetUnfolder]: 19/899 cut-off events. [2023-08-31 11:32:49,534 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 11:32:49,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:32:49,534 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:32:49,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:32:49,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:32:49,534 INFO L85 PathProgramCache]: Analyzing trace with hash -937297274, now seen corresponding path program 1 times [2023-08-31 11:32:49,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:32:49,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518977473] [2023-08-31 11:32:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:32:49,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:32:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:49,578 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:32:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:49,639 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:32:49,639 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:32:49,640 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:32:49,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-31 11:32:49,640 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:32:49,640 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:32:49,640 WARN L233 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:32:49,641 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2023-08-31 11:32:49,728 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:32:49,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1225 places, 1185 transitions, 4130 flow [2023-08-31 11:32:50,398 INFO L130 PetriNetUnfolder]: 81/1663 cut-off events. [2023-08-31 11:32:50,398 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 11:32:50,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2604 conditions, 1663 events. 81/1663 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5975 event pairs, 0 based on Foata normal form. 0/1261 useless extension candidates. Maximal degree in co-relation 2510. Up to 82 conditions per place. [2023-08-31 11:32:50,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 1225 places, 1185 transitions, 4130 flow [2023-08-31 11:32:50,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1225 places, 1185 transitions, 4130 flow [2023-08-31 11:32:50,480 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:32:50,480 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1225 places, 1185 transitions, 4130 flow [2023-08-31 11:32:50,480 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1225 places, 1185 transitions, 4130 flow [2023-08-31 11:32:50,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1225 places, 1185 transitions, 4130 flow [2023-08-31 11:32:51,221 INFO L130 PetriNetUnfolder]: 81/1663 cut-off events. [2023-08-31 11:32:51,222 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 11:32:51,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2604 conditions, 1663 events. 81/1663 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5975 event pairs, 0 based on Foata normal form. 0/1261 useless extension candidates. Maximal degree in co-relation 2510. Up to 82 conditions per place. [2023-08-31 11:32:51,550 INFO L119 LiptonReduction]: Number of co-enabled transitions 1295840 [2023-08-31 11:32:58,186 INFO L134 LiptonReduction]: Checked pairs total: 5560418 [2023-08-31 11:32:58,186 INFO L136 LiptonReduction]: Total number of compositions: 582 [2023-08-31 11:32:58,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:32:58,187 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:32:58,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:32:58,438 INFO L130 PetriNetUnfolder]: 18/921 cut-off events. [2023-08-31 11:32:58,438 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 11:32:58,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:32:58,439 INFO L208 CegarLoopForPetriNet]: trace histogram [41, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:32:58,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:32:58,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:32:58,439 INFO L85 PathProgramCache]: Analyzing trace with hash -554024905, now seen corresponding path program 1 times [2023-08-31 11:32:58,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:32:58,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331716835] [2023-08-31 11:32:58,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:32:58,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:32:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:58,485 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:32:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:32:58,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:32:58,547 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:32:58,547 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:32:58,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-31 11:32:58,547 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:32:58,548 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:32:58,548 WARN L233 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:32:58,548 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2023-08-31 11:32:58,638 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:32:58,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1255 places, 1214 transitions, 4273 flow [2023-08-31 11:32:59,336 INFO L130 PetriNetUnfolder]: 83/1704 cut-off events. [2023-08-31 11:32:59,337 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 11:32:59,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2689 conditions, 1704 events. 83/1704 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6143 event pairs, 0 based on Foata normal form. 0/1292 useless extension candidates. Maximal degree in co-relation 2594. Up to 84 conditions per place. [2023-08-31 11:32:59,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 1255 places, 1214 transitions, 4273 flow [2023-08-31 11:32:59,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1255 places, 1214 transitions, 4273 flow [2023-08-31 11:32:59,422 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:32:59,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1255 places, 1214 transitions, 4273 flow [2023-08-31 11:32:59,423 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1255 places, 1214 transitions, 4273 flow [2023-08-31 11:32:59,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1255 places, 1214 transitions, 4273 flow [2023-08-31 11:33:00,228 INFO L130 PetriNetUnfolder]: 83/1704 cut-off events. [2023-08-31 11:33:00,228 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 11:33:00,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2689 conditions, 1704 events. 83/1704 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6143 event pairs, 0 based on Foata normal form. 0/1292 useless extension candidates. Maximal degree in co-relation 2594. Up to 84 conditions per place. [2023-08-31 11:33:00,527 INFO L119 LiptonReduction]: Number of co-enabled transitions 1361528 [2023-08-31 11:33:07,401 INFO L134 LiptonReduction]: Checked pairs total: 5869685 [2023-08-31 11:33:07,401 INFO L136 LiptonReduction]: Total number of compositions: 595 [2023-08-31 11:33:07,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:33:07,403 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:33:07,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:33:07,669 INFO L130 PetriNetUnfolder]: 18/944 cut-off events. [2023-08-31 11:33:07,669 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 11:33:07,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:33:07,669 INFO L208 CegarLoopForPetriNet]: trace histogram [42, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:33:07,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:33:07,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:33:07,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2014316917, now seen corresponding path program 1 times [2023-08-31 11:33:07,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:33:07,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693105241] [2023-08-31 11:33:07,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:33:07,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:33:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:33:07,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:33:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:33:07,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:33:07,779 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:33:07,779 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:33:07,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-31 11:33:07,780 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:33:07,780 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:33:07,780 WARN L233 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:33:07,780 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2023-08-31 11:33:07,877 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:33:07,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1285 places, 1243 transitions, 4418 flow [2023-08-31 11:33:08,787 INFO L130 PetriNetUnfolder]: 85/1745 cut-off events. [2023-08-31 11:33:08,787 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 11:33:08,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2775 conditions, 1745 events. 85/1745 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6274 event pairs, 0 based on Foata normal form. 0/1323 useless extension candidates. Maximal degree in co-relation 2679. Up to 86 conditions per place. [2023-08-31 11:33:08,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 1285 places, 1243 transitions, 4418 flow [2023-08-31 11:33:08,851 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1285 places, 1243 transitions, 4418 flow [2023-08-31 11:33:08,852 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:33:08,852 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1285 places, 1243 transitions, 4418 flow [2023-08-31 11:33:08,852 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1285 places, 1243 transitions, 4418 flow [2023-08-31 11:33:08,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1285 places, 1243 transitions, 4418 flow [2023-08-31 11:33:09,580 INFO L130 PetriNetUnfolder]: 85/1745 cut-off events. [2023-08-31 11:33:09,581 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 11:33:09,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2775 conditions, 1745 events. 85/1745 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6274 event pairs, 0 based on Foata normal form. 0/1323 useless extension candidates. Maximal degree in co-relation 2679. Up to 86 conditions per place. [2023-08-31 11:33:09,969 INFO L119 LiptonReduction]: Number of co-enabled transitions 1428840 [2023-08-31 11:33:17,009 INFO L134 LiptonReduction]: Checked pairs total: 6146913 [2023-08-31 11:33:17,009 INFO L136 LiptonReduction]: Total number of compositions: 604 [2023-08-31 11:33:17,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:33:17,010 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:33:17,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:33:17,286 INFO L130 PetriNetUnfolder]: 21/970 cut-off events. [2023-08-31 11:33:17,287 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 11:33:17,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:33:17,287 INFO L208 CegarLoopForPetriNet]: trace histogram [43, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:33:17,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:33:17,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:33:17,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1045580323, now seen corresponding path program 1 times [2023-08-31 11:33:17,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:33:17,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853458708] [2023-08-31 11:33:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:33:17,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:33:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:33:17,334 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:33:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:33:17,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:33:17,396 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:33:17,396 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:33:17,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-31 11:33:17,396 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:33:17,396 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:33:17,396 WARN L233 ceAbstractionStarter]: 42 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:33:17,397 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 43 thread instances. [2023-08-31 11:33:17,484 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:33:17,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1315 places, 1272 transitions, 4565 flow [2023-08-31 11:33:18,291 INFO L130 PetriNetUnfolder]: 87/1786 cut-off events. [2023-08-31 11:33:18,291 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 11:33:18,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2862 conditions, 1786 events. 87/1786 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6419 event pairs, 0 based on Foata normal form. 0/1354 useless extension candidates. Maximal degree in co-relation 2765. Up to 88 conditions per place. [2023-08-31 11:33:18,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 1315 places, 1272 transitions, 4565 flow [2023-08-31 11:33:18,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1315 places, 1272 transitions, 4565 flow [2023-08-31 11:33:18,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:33:18,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1315 places, 1272 transitions, 4565 flow [2023-08-31 11:33:18,375 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1315 places, 1272 transitions, 4565 flow [2023-08-31 11:33:18,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1315 places, 1272 transitions, 4565 flow [2023-08-31 11:33:19,243 INFO L130 PetriNetUnfolder]: 87/1786 cut-off events. [2023-08-31 11:33:19,243 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 11:33:19,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2862 conditions, 1786 events. 87/1786 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6419 event pairs, 0 based on Foata normal form. 0/1354 useless extension candidates. Maximal degree in co-relation 2765. Up to 88 conditions per place. [2023-08-31 11:33:19,664 INFO L119 LiptonReduction]: Number of co-enabled transitions 1497776 [2023-08-31 11:33:26,934 INFO L134 LiptonReduction]: Checked pairs total: 6478842 [2023-08-31 11:33:26,934 INFO L136 LiptonReduction]: Total number of compositions: 625 [2023-08-31 11:33:26,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:33:26,936 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:33:26,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:33:27,229 INFO L130 PetriNetUnfolder]: 19/991 cut-off events. [2023-08-31 11:33:27,230 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 11:33:27,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:33:27,230 INFO L208 CegarLoopForPetriNet]: trace histogram [44, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:33:27,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:33:27,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:33:27,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1009882572, now seen corresponding path program 1 times [2023-08-31 11:33:27,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:33:27,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705796985] [2023-08-31 11:33:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:33:27,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:33:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:33:27,276 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:33:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:33:27,346 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:33:27,347 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:33:27,347 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:33:27,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-31 11:33:27,347 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:33:27,348 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:33:27,348 WARN L233 ceAbstractionStarter]: 43 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:33:27,348 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 44 thread instances. [2023-08-31 11:33:27,446 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:33:27,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1345 places, 1301 transitions, 4714 flow [2023-08-31 11:33:28,395 INFO L130 PetriNetUnfolder]: 89/1827 cut-off events. [2023-08-31 11:33:28,395 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 11:33:28,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2950 conditions, 1827 events. 89/1827 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6590 event pairs, 0 based on Foata normal form. 0/1385 useless extension candidates. Maximal degree in co-relation 2852. Up to 90 conditions per place. [2023-08-31 11:33:28,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 1345 places, 1301 transitions, 4714 flow [2023-08-31 11:33:28,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1345 places, 1301 transitions, 4714 flow [2023-08-31 11:33:28,476 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:33:28,476 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1345 places, 1301 transitions, 4714 flow [2023-08-31 11:33:28,476 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1345 places, 1301 transitions, 4714 flow [2023-08-31 11:33:28,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1345 places, 1301 transitions, 4714 flow [2023-08-31 11:33:29,293 INFO L130 PetriNetUnfolder]: 89/1827 cut-off events. [2023-08-31 11:33:29,293 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 11:33:29,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2950 conditions, 1827 events. 89/1827 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6590 event pairs, 0 based on Foata normal form. 0/1385 useless extension candidates. Maximal degree in co-relation 2852. Up to 90 conditions per place. [2023-08-31 11:33:29,730 INFO L119 LiptonReduction]: Number of co-enabled transitions 1568336 [2023-08-31 11:33:37,353 INFO L134 LiptonReduction]: Checked pairs total: 6801935 [2023-08-31 11:33:37,353 INFO L136 LiptonReduction]: Total number of compositions: 622 [2023-08-31 11:33:37,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:33:37,355 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:33:37,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:33:37,665 INFO L130 PetriNetUnfolder]: 27/1022 cut-off events. [2023-08-31 11:33:37,665 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 11:33:37,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:33:37,666 INFO L208 CegarLoopForPetriNet]: trace histogram [45, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:33:37,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:33:37,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:33:37,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1562767807, now seen corresponding path program 1 times [2023-08-31 11:33:37,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:33:37,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899044695] [2023-08-31 11:33:37,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:33:37,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:33:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:33:37,710 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:33:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:33:37,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:33:37,774 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:33:37,775 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:33:37,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-31 11:33:37,775 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:33:37,775 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:33:37,775 WARN L233 ceAbstractionStarter]: 44 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:33:37,775 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 45 thread instances. [2023-08-31 11:33:37,876 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:33:37,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1375 places, 1330 transitions, 4865 flow [2023-08-31 11:33:38,815 INFO L130 PetriNetUnfolder]: 91/1868 cut-off events. [2023-08-31 11:33:38,815 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-08-31 11:33:38,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3039 conditions, 1868 events. 91/1868 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6743 event pairs, 0 based on Foata normal form. 0/1416 useless extension candidates. Maximal degree in co-relation 2940. Up to 92 conditions per place. [2023-08-31 11:33:38,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 1375 places, 1330 transitions, 4865 flow [2023-08-31 11:33:38,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1375 places, 1330 transitions, 4865 flow [2023-08-31 11:33:38,916 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:33:38,916 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1375 places, 1330 transitions, 4865 flow [2023-08-31 11:33:38,916 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1375 places, 1330 transitions, 4865 flow [2023-08-31 11:33:38,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1375 places, 1330 transitions, 4865 flow [2023-08-31 11:33:39,794 INFO L130 PetriNetUnfolder]: 91/1868 cut-off events. [2023-08-31 11:33:39,794 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-08-31 11:33:39,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3039 conditions, 1868 events. 91/1868 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6743 event pairs, 0 based on Foata normal form. 0/1416 useless extension candidates. Maximal degree in co-relation 2940. Up to 92 conditions per place. [2023-08-31 11:33:40,453 INFO L119 LiptonReduction]: Number of co-enabled transitions 1640520 [2023-08-31 11:33:48,265 INFO L134 LiptonReduction]: Checked pairs total: 7105821 [2023-08-31 11:33:48,265 INFO L136 LiptonReduction]: Total number of compositions: 651 [2023-08-31 11:33:48,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:33:48,267 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:33:48,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:33:48,600 INFO L130 PetriNetUnfolder]: 22/1040 cut-off events. [2023-08-31 11:33:48,600 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-08-31 11:33:48,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:33:48,600 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:33:48,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:33:48,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:33:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash 468742211, now seen corresponding path program 1 times [2023-08-31 11:33:48,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:33:48,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405407717] [2023-08-31 11:33:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:33:48,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:33:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:33:48,650 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:33:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:33:48,724 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:33:48,725 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:33:48,725 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:33:48,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-31 11:33:48,725 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:33:48,725 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:33:48,725 WARN L233 ceAbstractionStarter]: 45 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:33:48,726 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 46 thread instances. [2023-08-31 11:33:48,932 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:33:48,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1405 places, 1359 transitions, 5018 flow [2023-08-31 11:33:50,069 INFO L130 PetriNetUnfolder]: 93/1909 cut-off events. [2023-08-31 11:33:50,069 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-08-31 11:33:50,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3129 conditions, 1909 events. 93/1909 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6965 event pairs, 0 based on Foata normal form. 0/1447 useless extension candidates. Maximal degree in co-relation 3029. Up to 94 conditions per place. [2023-08-31 11:33:50,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 1405 places, 1359 transitions, 5018 flow [2023-08-31 11:33:50,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1405 places, 1359 transitions, 5018 flow [2023-08-31 11:33:50,173 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:33:50,173 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1405 places, 1359 transitions, 5018 flow [2023-08-31 11:33:50,173 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1405 places, 1359 transitions, 5018 flow [2023-08-31 11:33:50,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1405 places, 1359 transitions, 5018 flow [2023-08-31 11:33:51,093 INFO L130 PetriNetUnfolder]: 93/1909 cut-off events. [2023-08-31 11:33:51,093 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-08-31 11:33:51,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3129 conditions, 1909 events. 93/1909 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6965 event pairs, 0 based on Foata normal form. 0/1447 useless extension candidates. Maximal degree in co-relation 3029. Up to 94 conditions per place. [2023-08-31 11:33:51,603 INFO L119 LiptonReduction]: Number of co-enabled transitions 1714328 [2023-08-31 11:33:59,390 INFO L134 LiptonReduction]: Checked pairs total: 7381808 [2023-08-31 11:33:59,391 INFO L136 LiptonReduction]: Total number of compositions: 658 [2023-08-31 11:33:59,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:33:59,392 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:33:59,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:33:59,739 INFO L130 PetriNetUnfolder]: 24/1065 cut-off events. [2023-08-31 11:33:59,739 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-08-31 11:33:59,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:33:59,739 INFO L208 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:33:59,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:33:59,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:33:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1792065263, now seen corresponding path program 1 times [2023-08-31 11:33:59,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:33:59,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452297803] [2023-08-31 11:33:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:33:59,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:33:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:33:59,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:33:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:33:59,867 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:33:59,868 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:33:59,868 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:33:59,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-31 11:33:59,868 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:33:59,868 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:33:59,868 WARN L233 ceAbstractionStarter]: 46 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:33:59,869 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 47 thread instances. [2023-08-31 11:33:59,979 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:33:59,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1435 places, 1388 transitions, 5173 flow [2023-08-31 11:34:01,088 INFO L130 PetriNetUnfolder]: 95/1950 cut-off events. [2023-08-31 11:34:01,088 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-08-31 11:34:01,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3220 conditions, 1950 events. 95/1950 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7059 event pairs, 0 based on Foata normal form. 0/1478 useless extension candidates. Maximal degree in co-relation 3119. Up to 96 conditions per place. [2023-08-31 11:34:01,182 INFO L82 GeneralOperation]: Start removeDead. Operand has 1435 places, 1388 transitions, 5173 flow [2023-08-31 11:34:01,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1435 places, 1388 transitions, 5173 flow [2023-08-31 11:34:01,195 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:34:01,195 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1435 places, 1388 transitions, 5173 flow [2023-08-31 11:34:01,195 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1435 places, 1388 transitions, 5173 flow [2023-08-31 11:34:01,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1435 places, 1388 transitions, 5173 flow [2023-08-31 11:34:02,172 INFO L130 PetriNetUnfolder]: 95/1950 cut-off events. [2023-08-31 11:34:02,173 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-08-31 11:34:02,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3220 conditions, 1950 events. 95/1950 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7059 event pairs, 0 based on Foata normal form. 0/1478 useless extension candidates. Maximal degree in co-relation 3119. Up to 96 conditions per place. [2023-08-31 11:34:02,687 INFO L119 LiptonReduction]: Number of co-enabled transitions 1789760 [2023-08-31 11:34:10,914 INFO L134 LiptonReduction]: Checked pairs total: 7781104 [2023-08-31 11:34:10,914 INFO L136 LiptonReduction]: Total number of compositions: 681 [2023-08-31 11:34:10,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:34:10,916 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:34:10,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:34:11,289 INFO L130 PetriNetUnfolder]: 20/1084 cut-off events. [2023-08-31 11:34:11,289 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-08-31 11:34:11,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:34:11,289 INFO L208 CegarLoopForPetriNet]: trace histogram [48, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:34:11,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:34:11,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:34:11,290 INFO L85 PathProgramCache]: Analyzing trace with hash 579863509, now seen corresponding path program 1 times [2023-08-31 11:34:11,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:34:11,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912671824] [2023-08-31 11:34:11,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:34:11,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:34:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:34:11,355 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:34:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:34:11,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:34:11,430 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:34:11,430 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:34:11,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-31 11:34:11,431 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:34:11,431 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:34:11,431 WARN L233 ceAbstractionStarter]: 47 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:34:11,431 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 48 thread instances. [2023-08-31 11:34:11,536 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:34:11,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1465 places, 1417 transitions, 5330 flow [2023-08-31 11:34:12,588 INFO L130 PetriNetUnfolder]: 97/1991 cut-off events. [2023-08-31 11:34:12,588 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-08-31 11:34:12,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 1991 events. 97/1991 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7157 event pairs, 0 based on Foata normal form. 0/1509 useless extension candidates. Maximal degree in co-relation 3210. Up to 98 conditions per place. [2023-08-31 11:34:12,684 INFO L82 GeneralOperation]: Start removeDead. Operand has 1465 places, 1417 transitions, 5330 flow [2023-08-31 11:34:12,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1465 places, 1417 transitions, 5330 flow [2023-08-31 11:34:12,699 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:34:12,699 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1465 places, 1417 transitions, 5330 flow [2023-08-31 11:34:12,699 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1465 places, 1417 transitions, 5330 flow [2023-08-31 11:34:12,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1465 places, 1417 transitions, 5330 flow [2023-08-31 11:34:13,737 INFO L130 PetriNetUnfolder]: 97/1991 cut-off events. [2023-08-31 11:34:13,737 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-08-31 11:34:13,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 1991 events. 97/1991 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7157 event pairs, 0 based on Foata normal form. 0/1509 useless extension candidates. Maximal degree in co-relation 3210. Up to 98 conditions per place. [2023-08-31 11:34:14,284 INFO L119 LiptonReduction]: Number of co-enabled transitions 1866816 [2023-08-31 11:34:22,391 INFO L134 LiptonReduction]: Checked pairs total: 8068202 [2023-08-31 11:34:22,391 INFO L136 LiptonReduction]: Total number of compositions: 694 [2023-08-31 11:34:22,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:34:22,393 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:34:22,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:34:22,777 INFO L130 PetriNetUnfolder]: 23/1110 cut-off events. [2023-08-31 11:34:22,777 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-08-31 11:34:22,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:34:22,777 INFO L208 CegarLoopForPetriNet]: trace histogram [49, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:34:22,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:34:22,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:34:22,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2003767637, now seen corresponding path program 1 times [2023-08-31 11:34:22,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:34:22,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279051879] [2023-08-31 11:34:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:34:22,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:34:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:34:22,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:34:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:34:22,998 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:34:22,998 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:34:22,998 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:34:22,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-31 11:34:23,000 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:34:23,000 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:34:23,001 WARN L233 ceAbstractionStarter]: 48 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:34:23,001 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 49 thread instances. [2023-08-31 11:34:23,106 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:34:23,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1495 places, 1446 transitions, 5489 flow [2023-08-31 11:34:24,325 INFO L130 PetriNetUnfolder]: 99/2032 cut-off events. [2023-08-31 11:34:24,325 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-08-31 11:34:24,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3405 conditions, 2032 events. 99/2032 cut-off events. For 20776/20776 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7304 event pairs, 0 based on Foata normal form. 0/1540 useless extension candidates. Maximal degree in co-relation 3302. Up to 100 conditions per place. [2023-08-31 11:34:24,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 1495 places, 1446 transitions, 5489 flow [2023-08-31 11:34:24,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1495 places, 1446 transitions, 5489 flow [2023-08-31 11:34:24,446 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:34:24,446 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1495 places, 1446 transitions, 5489 flow [2023-08-31 11:34:24,446 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1495 places, 1446 transitions, 5489 flow [2023-08-31 11:34:24,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1495 places, 1446 transitions, 5489 flow [2023-08-31 11:34:25,517 INFO L130 PetriNetUnfolder]: 99/2032 cut-off events. [2023-08-31 11:34:25,517 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-08-31 11:34:25,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3405 conditions, 2032 events. 99/2032 cut-off events. For 20776/20776 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7304 event pairs, 0 based on Foata normal form. 0/1540 useless extension candidates. Maximal degree in co-relation 3302. Up to 100 conditions per place. [2023-08-31 11:34:26,268 INFO L119 LiptonReduction]: Number of co-enabled transitions 1945496 [2023-08-31 11:34:34,857 INFO L134 LiptonReduction]: Checked pairs total: 8495450 [2023-08-31 11:34:34,857 INFO L136 LiptonReduction]: Total number of compositions: 705 [2023-08-31 11:34:34,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:34:34,859 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:34:34,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:34:35,253 INFO L130 PetriNetUnfolder]: 24/1134 cut-off events. [2023-08-31 11:34:35,253 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-08-31 11:34:35,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:34:35,254 INFO L208 CegarLoopForPetriNet]: trace histogram [50, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:34:35,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:34:35,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:34:35,254 INFO L85 PathProgramCache]: Analyzing trace with hash -625379839, now seen corresponding path program 1 times [2023-08-31 11:34:35,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:34:35,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945534184] [2023-08-31 11:34:35,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:34:35,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:34:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:34:35,313 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:34:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:34:35,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:34:35,383 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:34:35,384 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:34:35,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-31 11:34:35,384 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:34:35,384 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:34:35,384 WARN L233 ceAbstractionStarter]: 49 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:34:35,384 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 50 thread instances. [2023-08-31 11:34:35,485 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:34:35,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1525 places, 1475 transitions, 5650 flow [2023-08-31 11:34:36,821 INFO L130 PetriNetUnfolder]: 101/2073 cut-off events. [2023-08-31 11:34:36,821 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-08-31 11:34:36,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3499 conditions, 2073 events. 101/2073 cut-off events. For 22050/22050 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7586 event pairs, 0 based on Foata normal form. 0/1571 useless extension candidates. Maximal degree in co-relation 3395. Up to 102 conditions per place. [2023-08-31 11:34:36,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 1525 places, 1475 transitions, 5650 flow [2023-08-31 11:34:36,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1525 places, 1475 transitions, 5650 flow [2023-08-31 11:34:36,925 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:34:36,925 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1525 places, 1475 transitions, 5650 flow [2023-08-31 11:34:36,925 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1525 places, 1475 transitions, 5650 flow [2023-08-31 11:34:36,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1525 places, 1475 transitions, 5650 flow [2023-08-31 11:34:38,023 INFO L130 PetriNetUnfolder]: 101/2073 cut-off events. [2023-08-31 11:34:38,024 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-08-31 11:34:38,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3499 conditions, 2073 events. 101/2073 cut-off events. For 22050/22050 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7586 event pairs, 0 based on Foata normal form. 0/1571 useless extension candidates. Maximal degree in co-relation 3395. Up to 102 conditions per place. [2023-08-31 11:34:38,620 INFO L119 LiptonReduction]: Number of co-enabled transitions 2025800 [2023-08-31 11:34:47,501 INFO L134 LiptonReduction]: Checked pairs total: 8681687 [2023-08-31 11:34:47,501 INFO L136 LiptonReduction]: Total number of compositions: 710 [2023-08-31 11:34:47,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:34:47,503 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:34:47,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:34:48,012 INFO L130 PetriNetUnfolder]: 29/1162 cut-off events. [2023-08-31 11:34:48,012 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-08-31 11:34:48,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:34:48,012 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:34:48,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:34:48,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:34:48,013 INFO L85 PathProgramCache]: Analyzing trace with hash 321555338, now seen corresponding path program 1 times [2023-08-31 11:34:48,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:34:48,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200380138] [2023-08-31 11:34:48,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:34:48,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:34:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:34:48,072 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:34:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:34:48,161 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:34:48,161 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:34:48,161 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:34:48,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-31 11:34:48,162 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:34:48,162 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:34:48,162 WARN L233 ceAbstractionStarter]: 50 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:34:48,162 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 51 thread instances. [2023-08-31 11:34:48,330 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:34:48,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1555 places, 1504 transitions, 5813 flow [2023-08-31 11:34:49,543 INFO L130 PetriNetUnfolder]: 103/2114 cut-off events. [2023-08-31 11:34:49,543 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-08-31 11:34:49,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3594 conditions, 2114 events. 103/2114 cut-off events. For 23375/23375 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7686 event pairs, 0 based on Foata normal form. 0/1602 useless extension candidates. Maximal degree in co-relation 3489. Up to 104 conditions per place. [2023-08-31 11:34:49,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 1555 places, 1504 transitions, 5813 flow [2023-08-31 11:34:49,661 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1555 places, 1504 transitions, 5813 flow [2023-08-31 11:34:49,662 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:34:49,662 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1555 places, 1504 transitions, 5813 flow [2023-08-31 11:34:49,662 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1555 places, 1504 transitions, 5813 flow [2023-08-31 11:34:49,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1555 places, 1504 transitions, 5813 flow [2023-08-31 11:34:50,836 INFO L130 PetriNetUnfolder]: 103/2114 cut-off events. [2023-08-31 11:34:50,836 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-08-31 11:34:50,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3594 conditions, 2114 events. 103/2114 cut-off events. For 23375/23375 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7686 event pairs, 0 based on Foata normal form. 0/1602 useless extension candidates. Maximal degree in co-relation 3489. Up to 104 conditions per place. [2023-08-31 11:34:51,682 INFO L119 LiptonReduction]: Number of co-enabled transitions 2107728 [2023-08-31 11:35:00,761 INFO L134 LiptonReduction]: Checked pairs total: 9086748 [2023-08-31 11:35:00,761 INFO L136 LiptonReduction]: Total number of compositions: 739 [2023-08-31 11:35:00,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:35:00,762 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:35:00,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:35:01,190 INFO L130 PetriNetUnfolder]: 23/1179 cut-off events. [2023-08-31 11:35:01,190 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-08-31 11:35:01,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:35:01,190 INFO L208 CegarLoopForPetriNet]: trace histogram [52, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:35:01,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:35:01,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:35:01,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1327494988, now seen corresponding path program 1 times [2023-08-31 11:35:01,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:35:01,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867849846] [2023-08-31 11:35:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:35:01,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:35:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:35:01,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:35:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:35:01,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:35:01,417 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:35:01,417 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:35:01,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-31 11:35:01,417 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:35:01,418 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:35:01,418 WARN L233 ceAbstractionStarter]: 51 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:35:01,418 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 52 thread instances. [2023-08-31 11:35:01,521 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:35:01,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1585 places, 1533 transitions, 5978 flow [2023-08-31 11:35:02,919 INFO L130 PetriNetUnfolder]: 105/2155 cut-off events. [2023-08-31 11:35:02,919 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-08-31 11:35:03,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3690 conditions, 2155 events. 105/2155 cut-off events. For 24752/24752 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7773 event pairs, 0 based on Foata normal form. 0/1633 useless extension candidates. Maximal degree in co-relation 3584. Up to 106 conditions per place. [2023-08-31 11:35:03,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 1585 places, 1533 transitions, 5978 flow [2023-08-31 11:35:03,063 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1585 places, 1533 transitions, 5978 flow [2023-08-31 11:35:03,063 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:35:03,063 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1585 places, 1533 transitions, 5978 flow [2023-08-31 11:35:03,064 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1585 places, 1533 transitions, 5978 flow [2023-08-31 11:35:03,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1585 places, 1533 transitions, 5978 flow [2023-08-31 11:35:04,460 INFO L130 PetriNetUnfolder]: 105/2155 cut-off events. [2023-08-31 11:35:04,461 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-08-31 11:35:04,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3690 conditions, 2155 events. 105/2155 cut-off events. For 24752/24752 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7773 event pairs, 0 based on Foata normal form. 0/1633 useless extension candidates. Maximal degree in co-relation 3584. Up to 106 conditions per place. [2023-08-31 11:35:04,978 INFO L119 LiptonReduction]: Number of co-enabled transitions 2191280 [2023-08-31 11:35:14,373 INFO L134 LiptonReduction]: Checked pairs total: 9562899 [2023-08-31 11:35:14,373 INFO L136 LiptonReduction]: Total number of compositions: 756 [2023-08-31 11:35:14,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:35:14,375 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:35:14,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:35:14,943 INFO L130 PetriNetUnfolder]: 22/1201 cut-off events. [2023-08-31 11:35:14,943 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-08-31 11:35:14,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:35:14,943 INFO L208 CegarLoopForPetriNet]: trace histogram [53, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:35:14,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:35:14,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:35:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1201388762, now seen corresponding path program 1 times [2023-08-31 11:35:14,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:35:14,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945387417] [2023-08-31 11:35:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:35:14,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:35:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:35:15,011 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:35:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:35:15,108 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:35:15,109 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:35:15,109 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:35:15,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-08-31 11:35:15,109 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:35:15,110 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:35:15,110 WARN L233 ceAbstractionStarter]: 52 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:35:15,110 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 53 thread instances. [2023-08-31 11:35:15,229 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:35:15,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1615 places, 1562 transitions, 6145 flow [2023-08-31 11:35:16,660 INFO L130 PetriNetUnfolder]: 107/2196 cut-off events. [2023-08-31 11:35:16,660 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-08-31 11:35:16,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3787 conditions, 2196 events. 107/2196 cut-off events. For 26182/26182 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7939 event pairs, 0 based on Foata normal form. 0/1664 useless extension candidates. Maximal degree in co-relation 3680. Up to 108 conditions per place. [2023-08-31 11:35:16,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 1615 places, 1562 transitions, 6145 flow [2023-08-31 11:35:16,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1615 places, 1562 transitions, 6145 flow [2023-08-31 11:35:16,815 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:35:16,815 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1615 places, 1562 transitions, 6145 flow [2023-08-31 11:35:16,815 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1615 places, 1562 transitions, 6145 flow [2023-08-31 11:35:16,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1615 places, 1562 transitions, 6145 flow [2023-08-31 11:35:18,154 INFO L130 PetriNetUnfolder]: 107/2196 cut-off events. [2023-08-31 11:35:18,154 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-08-31 11:35:18,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3787 conditions, 2196 events. 107/2196 cut-off events. For 26182/26182 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7939 event pairs, 0 based on Foata normal form. 0/1664 useless extension candidates. Maximal degree in co-relation 3680. Up to 108 conditions per place. [2023-08-31 11:35:18,729 INFO L119 LiptonReduction]: Number of co-enabled transitions 2276456 [2023-08-31 11:35:28,416 INFO L134 LiptonReduction]: Checked pairs total: 9902130 [2023-08-31 11:35:28,416 INFO L136 LiptonReduction]: Total number of compositions: 757 [2023-08-31 11:35:28,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:35:28,418 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:35:28,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:35:28,887 INFO L130 PetriNetUnfolder]: 29/1231 cut-off events. [2023-08-31 11:35:28,887 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-08-31 11:35:28,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:35:28,887 INFO L208 CegarLoopForPetriNet]: trace histogram [54, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:35:28,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:35:28,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:35:28,887 INFO L85 PathProgramCache]: Analyzing trace with hash 282697192, now seen corresponding path program 1 times [2023-08-31 11:35:28,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:35:28,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903772527] [2023-08-31 11:35:28,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:35:28,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:35:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:35:28,955 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:35:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:35:29,053 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:35:29,054 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:35:29,054 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:35:29,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-31 11:35:29,054 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:35:29,055 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:35:29,055 WARN L233 ceAbstractionStarter]: 53 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:35:29,055 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 54 thread instances. [2023-08-31 11:35:29,184 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:35:29,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1645 places, 1591 transitions, 6314 flow [2023-08-31 11:35:30,532 INFO L130 PetriNetUnfolder]: 109/2237 cut-off events. [2023-08-31 11:35:30,532 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-08-31 11:35:30,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3885 conditions, 2237 events. 109/2237 cut-off events. For 27666/27666 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8233 event pairs, 0 based on Foata normal form. 0/1695 useless extension candidates. Maximal degree in co-relation 3777. Up to 110 conditions per place. [2023-08-31 11:35:30,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 1645 places, 1591 transitions, 6314 flow [2023-08-31 11:35:30,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1645 places, 1591 transitions, 6314 flow [2023-08-31 11:35:30,667 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:35:30,667 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1645 places, 1591 transitions, 6314 flow [2023-08-31 11:35:30,667 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1645 places, 1591 transitions, 6314 flow [2023-08-31 11:35:30,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1645 places, 1591 transitions, 6314 flow [2023-08-31 11:35:32,019 INFO L130 PetriNetUnfolder]: 109/2237 cut-off events. [2023-08-31 11:35:32,019 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-08-31 11:35:32,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3885 conditions, 2237 events. 109/2237 cut-off events. For 27666/27666 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8233 event pairs, 0 based on Foata normal form. 0/1695 useless extension candidates. Maximal degree in co-relation 3777. Up to 110 conditions per place. [2023-08-31 11:35:32,616 INFO L119 LiptonReduction]: Number of co-enabled transitions 2363256 [2023-08-31 11:35:42,396 INFO L134 LiptonReduction]: Checked pairs total: 10172745 [2023-08-31 11:35:42,397 INFO L136 LiptonReduction]: Total number of compositions: 784 [2023-08-31 11:35:42,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:35:42,398 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:35:42,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:35:42,878 INFO L130 PetriNetUnfolder]: 23/1248 cut-off events. [2023-08-31 11:35:42,878 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-08-31 11:35:42,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:35:42,878 INFO L208 CegarLoopForPetriNet]: trace histogram [55, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:35:42,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:35:42,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:35:42,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2076048147, now seen corresponding path program 1 times [2023-08-31 11:35:42,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:35:42,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316156404] [2023-08-31 11:35:42,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:35:42,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:35:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:35:42,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:35:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:35:43,054 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:35:43,054 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:35:43,054 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:35:43,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-31 11:35:43,055 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:35:43,055 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:35:43,055 WARN L233 ceAbstractionStarter]: 54 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:35:43,055 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 55 thread instances. [2023-08-31 11:35:43,168 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:35:43,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1675 places, 1620 transitions, 6485 flow [2023-08-31 11:35:44,528 INFO L130 PetriNetUnfolder]: 111/2278 cut-off events. [2023-08-31 11:35:44,528 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-08-31 11:35:44,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3984 conditions, 2278 events. 111/2278 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8350 event pairs, 0 based on Foata normal form. 0/1726 useless extension candidates. Maximal degree in co-relation 3875. Up to 112 conditions per place. [2023-08-31 11:35:44,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 1675 places, 1620 transitions, 6485 flow [2023-08-31 11:35:44,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1675 places, 1620 transitions, 6485 flow [2023-08-31 11:35:44,667 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:35:44,667 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1675 places, 1620 transitions, 6485 flow [2023-08-31 11:35:44,667 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1675 places, 1620 transitions, 6485 flow [2023-08-31 11:35:44,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1675 places, 1620 transitions, 6485 flow [2023-08-31 11:35:46,037 INFO L130 PetriNetUnfolder]: 111/2278 cut-off events. [2023-08-31 11:35:46,038 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-08-31 11:35:46,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3984 conditions, 2278 events. 111/2278 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8350 event pairs, 0 based on Foata normal form. 0/1726 useless extension candidates. Maximal degree in co-relation 3875. Up to 112 conditions per place. [2023-08-31 11:35:47,295 INFO L119 LiptonReduction]: Number of co-enabled transitions 2451680 [2023-08-31 11:35:57,304 INFO L134 LiptonReduction]: Checked pairs total: 10632470 [2023-08-31 11:35:57,305 INFO L136 LiptonReduction]: Total number of compositions: 785 [2023-08-31 11:35:57,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:35:57,306 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:35:57,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:35:57,854 INFO L130 PetriNetUnfolder]: 29/1277 cut-off events. [2023-08-31 11:35:57,854 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-08-31 11:35:57,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:35:57,854 INFO L208 CegarLoopForPetriNet]: trace histogram [56, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:35:57,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:35:57,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:35:57,855 INFO L85 PathProgramCache]: Analyzing trace with hash 582103345, now seen corresponding path program 1 times [2023-08-31 11:35:57,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:35:57,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341956123] [2023-08-31 11:35:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:35:57,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:35:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:35:57,922 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:35:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:35:58,027 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:35:58,028 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:35:58,028 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:35:58,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-31 11:35:58,028 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:35:58,029 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:35:58,029 WARN L233 ceAbstractionStarter]: 55 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:35:58,029 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 56 thread instances. [2023-08-31 11:35:58,187 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:35:58,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1705 places, 1649 transitions, 6658 flow [2023-08-31 11:35:59,878 INFO L130 PetriNetUnfolder]: 113/2319 cut-off events. [2023-08-31 11:35:59,879 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-08-31 11:35:59,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4084 conditions, 2319 events. 113/2319 cut-off events. For 30800/30800 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8505 event pairs, 0 based on Foata normal form. 0/1757 useless extension candidates. Maximal degree in co-relation 3974. Up to 114 conditions per place. [2023-08-31 11:35:59,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 1705 places, 1649 transitions, 6658 flow [2023-08-31 11:36:00,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1705 places, 1649 transitions, 6658 flow [2023-08-31 11:36:00,008 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:36:00,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1705 places, 1649 transitions, 6658 flow [2023-08-31 11:36:00,008 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1705 places, 1649 transitions, 6658 flow [2023-08-31 11:36:00,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1705 places, 1649 transitions, 6658 flow [2023-08-31 11:36:01,658 INFO L130 PetriNetUnfolder]: 113/2319 cut-off events. [2023-08-31 11:36:01,658 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-08-31 11:36:01,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4084 conditions, 2319 events. 113/2319 cut-off events. For 30800/30800 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8505 event pairs, 0 based on Foata normal form. 0/1757 useless extension candidates. Maximal degree in co-relation 3974. Up to 114 conditions per place. [2023-08-31 11:36:02,441 INFO L119 LiptonReduction]: Number of co-enabled transitions 2541728 [2023-08-31 11:36:12,965 INFO L134 LiptonReduction]: Checked pairs total: 11151667 [2023-08-31 11:36:12,965 INFO L136 LiptonReduction]: Total number of compositions: 812 [2023-08-31 11:36:12,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:36:12,966 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:36:12,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:36:13,540 INFO L130 PetriNetUnfolder]: 23/1294 cut-off events. [2023-08-31 11:36:13,540 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-08-31 11:36:13,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:36:13,540 INFO L208 CegarLoopForPetriNet]: trace histogram [57, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:36:13,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:36:13,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:36:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1845920984, now seen corresponding path program 1 times [2023-08-31 11:36:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:36:13,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280974193] [2023-08-31 11:36:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:36:13,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:36:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:36:13,611 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:36:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:36:13,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:36:13,712 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:36:13,712 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:36:13,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-31 11:36:13,712 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:36:13,712 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:36:13,712 WARN L233 ceAbstractionStarter]: 56 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:36:13,713 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 57 thread instances. [2023-08-31 11:36:13,837 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:36:13,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1735 places, 1678 transitions, 6833 flow [2023-08-31 11:36:15,753 INFO L130 PetriNetUnfolder]: 115/2360 cut-off events. [2023-08-31 11:36:15,753 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-08-31 11:36:15,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4185 conditions, 2360 events. 115/2360 cut-off events. For 32452/32452 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8638 event pairs, 0 based on Foata normal form. 0/1788 useless extension candidates. Maximal degree in co-relation 4074. Up to 116 conditions per place. [2023-08-31 11:36:15,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 1735 places, 1678 transitions, 6833 flow [2023-08-31 11:36:15,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1735 places, 1678 transitions, 6833 flow [2023-08-31 11:36:15,886 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:36:15,886 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1735 places, 1678 transitions, 6833 flow [2023-08-31 11:36:15,886 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1735 places, 1678 transitions, 6833 flow [2023-08-31 11:36:15,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1735 places, 1678 transitions, 6833 flow [2023-08-31 11:36:17,710 INFO L130 PetriNetUnfolder]: 115/2360 cut-off events. [2023-08-31 11:36:17,710 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-08-31 11:36:17,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4185 conditions, 2360 events. 115/2360 cut-off events. For 32452/32452 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8638 event pairs, 0 based on Foata normal form. 0/1788 useless extension candidates. Maximal degree in co-relation 4074. Up to 116 conditions per place. [2023-08-31 11:36:18,494 INFO L119 LiptonReduction]: Number of co-enabled transitions 2633400 [2023-08-31 11:36:28,957 INFO L134 LiptonReduction]: Checked pairs total: 11448732 [2023-08-31 11:36:28,957 INFO L136 LiptonReduction]: Total number of compositions: 827 [2023-08-31 11:36:28,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:36:28,958 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:36:28,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:36:29,534 INFO L130 PetriNetUnfolder]: 24/1318 cut-off events. [2023-08-31 11:36:29,534 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-08-31 11:36:29,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:36:29,534 INFO L208 CegarLoopForPetriNet]: trace histogram [58, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:36:29,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:36:29,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:36:29,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1640509242, now seen corresponding path program 1 times [2023-08-31 11:36:29,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:36:29,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432914722] [2023-08-31 11:36:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:36:29,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:36:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:36:29,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:36:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:36:29,745 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:36:29,745 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:36:29,746 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:36:29,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-31 11:36:29,746 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:36:29,746 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:36:29,746 WARN L233 ceAbstractionStarter]: 57 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:36:29,746 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 58 thread instances. [2023-08-31 11:36:29,854 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:36:29,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1765 places, 1707 transitions, 7010 flow [2023-08-31 11:36:31,798 INFO L130 PetriNetUnfolder]: 117/2401 cut-off events. [2023-08-31 11:36:31,798 INFO L131 PetriNetUnfolder]: For 34162/34162 co-relation queries the response was YES. [2023-08-31 11:36:31,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4287 conditions, 2401 events. 117/2401 cut-off events. For 34162/34162 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8829 event pairs, 0 based on Foata normal form. 0/1819 useless extension candidates. Maximal degree in co-relation 4175. Up to 118 conditions per place. [2023-08-31 11:36:31,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 1765 places, 1707 transitions, 7010 flow [2023-08-31 11:36:31,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1765 places, 1707 transitions, 7010 flow [2023-08-31 11:36:31,940 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:36:31,940 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1765 places, 1707 transitions, 7010 flow [2023-08-31 11:36:31,940 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1765 places, 1707 transitions, 7010 flow [2023-08-31 11:36:31,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1765 places, 1707 transitions, 7010 flow [2023-08-31 11:36:33,818 INFO L130 PetriNetUnfolder]: 117/2401 cut-off events. [2023-08-31 11:36:33,818 INFO L131 PetriNetUnfolder]: For 34162/34162 co-relation queries the response was YES. [2023-08-31 11:36:33,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4287 conditions, 2401 events. 117/2401 cut-off events. For 34162/34162 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8829 event pairs, 0 based on Foata normal form. 0/1819 useless extension candidates. Maximal degree in co-relation 4175. Up to 118 conditions per place. [2023-08-31 11:36:34,690 INFO L119 LiptonReduction]: Number of co-enabled transitions 2726696 [2023-08-31 11:36:45,266 INFO L134 LiptonReduction]: Checked pairs total: 11773736 [2023-08-31 11:36:45,266 INFO L136 LiptonReduction]: Total number of compositions: 828 [2023-08-31 11:36:45,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:36:45,268 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:36:45,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:36:45,882 INFO L130 PetriNetUnfolder]: 31/1348 cut-off events. [2023-08-31 11:36:45,882 INFO L131 PetriNetUnfolder]: For 34162/34162 co-relation queries the response was YES. [2023-08-31 11:36:45,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:36:45,882 INFO L208 CegarLoopForPetriNet]: trace histogram [59, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:36:45,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:36:45,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:36:45,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1443501001, now seen corresponding path program 1 times [2023-08-31 11:36:45,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:36:45,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851721089] [2023-08-31 11:36:45,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:36:45,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:36:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:36:45,959 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:36:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:36:46,054 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:36:46,055 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:36:46,055 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:36:46,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-31 11:36:46,055 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:36:46,055 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:36:46,055 WARN L233 ceAbstractionStarter]: 58 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:36:46,055 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 59 thread instances. [2023-08-31 11:36:46,199 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:36:46,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1795 places, 1736 transitions, 7189 flow [2023-08-31 11:36:48,086 INFO L130 PetriNetUnfolder]: 119/2442 cut-off events. [2023-08-31 11:36:48,086 INFO L131 PetriNetUnfolder]: For 35931/35931 co-relation queries the response was YES. [2023-08-31 11:36:48,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4390 conditions, 2442 events. 119/2442 cut-off events. For 35931/35931 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8953 event pairs, 0 based on Foata normal form. 0/1850 useless extension candidates. Maximal degree in co-relation 4277. Up to 120 conditions per place. [2023-08-31 11:36:48,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 1795 places, 1736 transitions, 7189 flow [2023-08-31 11:36:48,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1795 places, 1736 transitions, 7189 flow [2023-08-31 11:36:48,234 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:36:48,234 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1795 places, 1736 transitions, 7189 flow [2023-08-31 11:36:48,234 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1795 places, 1736 transitions, 7189 flow [2023-08-31 11:36:48,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1795 places, 1736 transitions, 7189 flow [2023-08-31 11:36:50,156 INFO L130 PetriNetUnfolder]: 119/2442 cut-off events. [2023-08-31 11:36:50,156 INFO L131 PetriNetUnfolder]: For 35931/35931 co-relation queries the response was YES. [2023-08-31 11:36:50,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4390 conditions, 2442 events. 119/2442 cut-off events. For 35931/35931 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8953 event pairs, 0 based on Foata normal form. 0/1850 useless extension candidates. Maximal degree in co-relation 4277. Up to 120 conditions per place. [2023-08-31 11:36:51,009 INFO L119 LiptonReduction]: Number of co-enabled transitions 2821616 [2023-08-31 11:37:01,996 INFO L134 LiptonReduction]: Checked pairs total: 12202458 [2023-08-31 11:37:01,996 INFO L136 LiptonReduction]: Total number of compositions: 853 [2023-08-31 11:37:01,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:37:01,997 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:37:01,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:37:02,727 INFO L130 PetriNetUnfolder]: 26/1366 cut-off events. [2023-08-31 11:37:02,728 INFO L131 PetriNetUnfolder]: For 35931/35931 co-relation queries the response was YES. [2023-08-31 11:37:02,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:37:02,728 INFO L208 CegarLoopForPetriNet]: trace histogram [60, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:37:02,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:37:02,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:37:02,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1085947177, now seen corresponding path program 1 times [2023-08-31 11:37:02,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:37:02,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728617537] [2023-08-31 11:37:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:37:02,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:37:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:37:02,822 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:37:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:37:02,934 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:37:02,934 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:37:02,934 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:37:02,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-31 11:37:02,934 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:37:02,935 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:37:02,935 WARN L233 ceAbstractionStarter]: 59 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:37:02,935 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 60 thread instances. [2023-08-31 11:37:03,053 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:37:03,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1825 places, 1765 transitions, 7370 flow [2023-08-31 11:37:05,011 INFO L130 PetriNetUnfolder]: 121/2483 cut-off events. [2023-08-31 11:37:05,012 INFO L131 PetriNetUnfolder]: For 37760/37760 co-relation queries the response was YES. [2023-08-31 11:37:05,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 2483 events. 121/2483 cut-off events. For 37760/37760 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9125 event pairs, 0 based on Foata normal form. 0/1881 useless extension candidates. Maximal degree in co-relation 4380. Up to 122 conditions per place. [2023-08-31 11:37:05,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 1825 places, 1765 transitions, 7370 flow [2023-08-31 11:37:05,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1825 places, 1765 transitions, 7370 flow [2023-08-31 11:37:05,167 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:37:05,168 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1825 places, 1765 transitions, 7370 flow [2023-08-31 11:37:05,168 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1825 places, 1765 transitions, 7370 flow [2023-08-31 11:37:05,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1825 places, 1765 transitions, 7370 flow [2023-08-31 11:37:08,017 INFO L130 PetriNetUnfolder]: 121/2483 cut-off events. [2023-08-31 11:37:08,017 INFO L131 PetriNetUnfolder]: For 37760/37760 co-relation queries the response was YES. [2023-08-31 11:37:08,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 2483 events. 121/2483 cut-off events. For 37760/37760 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9125 event pairs, 0 based on Foata normal form. 0/1881 useless extension candidates. Maximal degree in co-relation 4380. Up to 122 conditions per place. [2023-08-31 11:37:08,937 INFO L119 LiptonReduction]: Number of co-enabled transitions 2918160 [2023-08-31 11:37:20,138 INFO L134 LiptonReduction]: Checked pairs total: 12733483 [2023-08-31 11:37:20,138 INFO L136 LiptonReduction]: Total number of compositions: 866 [2023-08-31 11:37:20,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:37:20,140 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:37:20,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:37:20,792 INFO L130 PetriNetUnfolder]: 26/1389 cut-off events. [2023-08-31 11:37:20,792 INFO L131 PetriNetUnfolder]: For 37760/37760 co-relation queries the response was YES. [2023-08-31 11:37:20,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:37:20,793 INFO L208 CegarLoopForPetriNet]: trace histogram [61, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:37:20,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:37:20,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:37:20,793 INFO L85 PathProgramCache]: Analyzing trace with hash -784643152, now seen corresponding path program 1 times [2023-08-31 11:37:20,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:37:20,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447861846] [2023-08-31 11:37:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:37:20,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:37:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:37:20,860 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:37:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:37:20,979 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:37:20,979 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:37:20,980 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:37:20,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-31 11:37:20,980 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:37:20,980 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:37:20,980 WARN L233 ceAbstractionStarter]: 60 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:37:20,980 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 61 thread instances. [2023-08-31 11:37:21,098 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:37:21,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1855 places, 1794 transitions, 7553 flow [2023-08-31 11:37:23,116 INFO L130 PetriNetUnfolder]: 123/2524 cut-off events. [2023-08-31 11:37:23,116 INFO L131 PetriNetUnfolder]: For 39650/39650 co-relation queries the response was YES. [2023-08-31 11:37:23,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4599 conditions, 2524 events. 123/2524 cut-off events. For 39650/39650 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9294 event pairs, 0 based on Foata normal form. 0/1912 useless extension candidates. Maximal degree in co-relation 4484. Up to 124 conditions per place. [2023-08-31 11:37:23,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 1855 places, 1794 transitions, 7553 flow [2023-08-31 11:37:23,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1855 places, 1794 transitions, 7553 flow [2023-08-31 11:37:23,274 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:37:23,275 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1855 places, 1794 transitions, 7553 flow [2023-08-31 11:37:23,275 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1855 places, 1794 transitions, 7553 flow [2023-08-31 11:37:23,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1855 places, 1794 transitions, 7553 flow [2023-08-31 11:37:25,282 INFO L130 PetriNetUnfolder]: 123/2524 cut-off events. [2023-08-31 11:37:25,282 INFO L131 PetriNetUnfolder]: For 39650/39650 co-relation queries the response was YES. [2023-08-31 11:37:25,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4599 conditions, 2524 events. 123/2524 cut-off events. For 39650/39650 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9294 event pairs, 0 based on Foata normal form. 0/1912 useless extension candidates. Maximal degree in co-relation 4484. Up to 124 conditions per place. [2023-08-31 11:37:26,262 INFO L119 LiptonReduction]: Number of co-enabled transitions 3016328 [2023-08-31 11:37:37,639 INFO L134 LiptonReduction]: Checked pairs total: 13070215 [2023-08-31 11:37:37,640 INFO L136 LiptonReduction]: Total number of compositions: 869 [2023-08-31 11:37:37,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:37:37,641 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:37:37,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:37:38,345 INFO L130 PetriNetUnfolder]: 31/1417 cut-off events. [2023-08-31 11:37:38,346 INFO L131 PetriNetUnfolder]: For 39650/39650 co-relation queries the response was YES. [2023-08-31 11:37:38,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:37:38,346 INFO L208 CegarLoopForPetriNet]: trace histogram [62, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:37:38,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:37:38,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:37:38,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1504442204, now seen corresponding path program 1 times [2023-08-31 11:37:38,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:37:38,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045751756] [2023-08-31 11:37:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:37:38,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:37:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:37:38,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:37:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:37:38,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:37:38,539 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:37:38,539 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:37:38,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-08-31 11:37:38,539 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:37:38,539 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:37:38,539 WARN L233 ceAbstractionStarter]: 61 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:37:38,539 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 62 thread instances. [2023-08-31 11:37:38,663 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:37:38,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1885 places, 1823 transitions, 7738 flow [2023-08-31 11:37:40,810 INFO L130 PetriNetUnfolder]: 125/2565 cut-off events. [2023-08-31 11:37:40,810 INFO L131 PetriNetUnfolder]: For 41602/41602 co-relation queries the response was YES. [2023-08-31 11:37:40,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4705 conditions, 2565 events. 125/2565 cut-off events. For 41602/41602 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9431 event pairs, 0 based on Foata normal form. 0/1943 useless extension candidates. Maximal degree in co-relation 4589. Up to 126 conditions per place. [2023-08-31 11:37:40,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 1885 places, 1823 transitions, 7738 flow [2023-08-31 11:37:40,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1885 places, 1823 transitions, 7738 flow [2023-08-31 11:37:40,976 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:37:40,976 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1885 places, 1823 transitions, 7738 flow [2023-08-31 11:37:40,976 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1885 places, 1823 transitions, 7738 flow [2023-08-31 11:37:40,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1885 places, 1823 transitions, 7738 flow [2023-08-31 11:37:43,129 INFO L130 PetriNetUnfolder]: 125/2565 cut-off events. [2023-08-31 11:37:43,129 INFO L131 PetriNetUnfolder]: For 41602/41602 co-relation queries the response was YES. [2023-08-31 11:37:43,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4705 conditions, 2565 events. 125/2565 cut-off events. For 41602/41602 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9431 event pairs, 0 based on Foata normal form. 0/1943 useless extension candidates. Maximal degree in co-relation 4589. Up to 126 conditions per place. [2023-08-31 11:37:44,144 INFO L119 LiptonReduction]: Number of co-enabled transitions 3116120 [2023-08-31 11:37:55,720 INFO L134 LiptonReduction]: Checked pairs total: 13613629 [2023-08-31 11:37:55,720 INFO L136 LiptonReduction]: Total number of compositions: 892 [2023-08-31 11:37:55,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:37:55,722 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:37:55,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:37:56,537 INFO L130 PetriNetUnfolder]: 28/1437 cut-off events. [2023-08-31 11:37:56,537 INFO L131 PetriNetUnfolder]: For 41602/41602 co-relation queries the response was YES. [2023-08-31 11:37:56,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:37:56,538 INFO L208 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:37:56,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:37:56,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:37:56,538 INFO L85 PathProgramCache]: Analyzing trace with hash 259855972, now seen corresponding path program 1 times [2023-08-31 11:37:56,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:37:56,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886996911] [2023-08-31 11:37:56,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:37:56,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:37:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:37:56,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:37:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:37:56,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:37:56,730 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:37:56,730 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:37:56,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-31 11:37:56,731 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:37:56,731 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:37:56,731 WARN L233 ceAbstractionStarter]: 62 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:37:56,731 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 63 thread instances. [2023-08-31 11:37:56,855 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:37:56,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1915 places, 1852 transitions, 7925 flow [2023-08-31 11:37:59,021 INFO L130 PetriNetUnfolder]: 127/2606 cut-off events. [2023-08-31 11:37:59,021 INFO L131 PetriNetUnfolder]: For 43617/43617 co-relation queries the response was YES. [2023-08-31 11:37:59,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4812 conditions, 2606 events. 127/2606 cut-off events. For 43617/43617 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 9546 event pairs, 0 based on Foata normal form. 0/1974 useless extension candidates. Maximal degree in co-relation 4695. Up to 128 conditions per place. [2023-08-31 11:37:59,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 1915 places, 1852 transitions, 7925 flow [2023-08-31 11:37:59,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1915 places, 1852 transitions, 7925 flow [2023-08-31 11:37:59,188 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:37:59,188 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1915 places, 1852 transitions, 7925 flow [2023-08-31 11:37:59,188 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1915 places, 1852 transitions, 7925 flow [2023-08-31 11:37:59,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1915 places, 1852 transitions, 7925 flow [2023-08-31 11:38:01,436 INFO L130 PetriNetUnfolder]: 127/2606 cut-off events. [2023-08-31 11:38:01,437 INFO L131 PetriNetUnfolder]: For 43617/43617 co-relation queries the response was YES. [2023-08-31 11:38:01,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4812 conditions, 2606 events. 127/2606 cut-off events. For 43617/43617 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 9546 event pairs, 0 based on Foata normal form. 0/1974 useless extension candidates. Maximal degree in co-relation 4695. Up to 128 conditions per place. [2023-08-31 11:38:02,437 INFO L119 LiptonReduction]: Number of co-enabled transitions 3217536 [2023-08-31 11:38:14,206 INFO L134 LiptonReduction]: Checked pairs total: 13885805 [2023-08-31 11:38:14,207 INFO L136 LiptonReduction]: Total number of compositions: 899 [2023-08-31 11:38:14,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:38:14,208 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:38:14,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:38:14,962 INFO L130 PetriNetUnfolder]: 33/1465 cut-off events. [2023-08-31 11:38:14,963 INFO L131 PetriNetUnfolder]: For 43617/43617 co-relation queries the response was YES. [2023-08-31 11:38:14,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:38:14,963 INFO L208 CegarLoopForPetriNet]: trace histogram [64, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:38:14,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:38:14,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:38:14,963 INFO L85 PathProgramCache]: Analyzing trace with hash -82046172, now seen corresponding path program 1 times [2023-08-31 11:38:14,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:38:14,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984500521] [2023-08-31 11:38:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:38:14,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:38:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:38:15,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:38:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:38:15,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:38:15,240 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:38:15,240 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:38:15,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-08-31 11:38:15,240 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:38:15,241 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:38:15,241 WARN L233 ceAbstractionStarter]: 63 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:38:15,241 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 64 thread instances. [2023-08-31 11:38:15,367 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:38:15,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1945 places, 1881 transitions, 8114 flow [2023-08-31 11:38:17,602 INFO L130 PetriNetUnfolder]: 129/2647 cut-off events. [2023-08-31 11:38:17,603 INFO L131 PetriNetUnfolder]: For 45696/45696 co-relation queries the response was YES. [2023-08-31 11:38:17,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4920 conditions, 2647 events. 129/2647 cut-off events. For 45696/45696 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9872 event pairs, 0 based on Foata normal form. 0/2005 useless extension candidates. Maximal degree in co-relation 4802. Up to 130 conditions per place. [2023-08-31 11:38:17,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 1945 places, 1881 transitions, 8114 flow [2023-08-31 11:38:17,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1945 places, 1881 transitions, 8114 flow [2023-08-31 11:38:17,783 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:38:17,783 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1945 places, 1881 transitions, 8114 flow [2023-08-31 11:38:17,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1945 places, 1881 transitions, 8114 flow [2023-08-31 11:38:17,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1945 places, 1881 transitions, 8114 flow [2023-08-31 11:38:20,052 INFO L130 PetriNetUnfolder]: 129/2647 cut-off events. [2023-08-31 11:38:20,052 INFO L131 PetriNetUnfolder]: For 45696/45696 co-relation queries the response was YES. [2023-08-31 11:38:20,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4920 conditions, 2647 events. 129/2647 cut-off events. For 45696/45696 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9872 event pairs, 0 based on Foata normal form. 0/2005 useless extension candidates. Maximal degree in co-relation 4802. Up to 130 conditions per place. [2023-08-31 11:38:21,156 INFO L119 LiptonReduction]: Number of co-enabled transitions 3320576 [2023-08-31 11:38:33,143 INFO L134 LiptonReduction]: Checked pairs total: 14372850 [2023-08-31 11:38:33,143 INFO L136 LiptonReduction]: Total number of compositions: 916 [2023-08-31 11:38:33,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:38:33,145 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:38:33,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:38:33,956 INFO L130 PetriNetUnfolder]: 32/1487 cut-off events. [2023-08-31 11:38:33,956 INFO L131 PetriNetUnfolder]: For 45696/45696 co-relation queries the response was YES. [2023-08-31 11:38:33,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:38:33,956 INFO L208 CegarLoopForPetriNet]: trace histogram [65, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:38:33,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:38:33,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:38:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash 832115952, now seen corresponding path program 1 times [2023-08-31 11:38:33,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:38:33,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939517681] [2023-08-31 11:38:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:38:33,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:38:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:38:34,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:38:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:38:34,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:38:34,184 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:38:34,185 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:38:34,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-31 11:38:34,185 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:38:34,185 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:38:34,185 WARN L233 ceAbstractionStarter]: 64 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:38:34,186 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 65 thread instances. [2023-08-31 11:38:34,320 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:38:34,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1975 places, 1910 transitions, 8305 flow [2023-08-31 11:38:36,673 INFO L130 PetriNetUnfolder]: 131/2688 cut-off events. [2023-08-31 11:38:36,673 INFO L131 PetriNetUnfolder]: For 47840/47840 co-relation queries the response was YES. [2023-08-31 11:38:36,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5029 conditions, 2688 events. 131/2688 cut-off events. For 47840/47840 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9899 event pairs, 0 based on Foata normal form. 0/2036 useless extension candidates. Maximal degree in co-relation 4910. Up to 132 conditions per place. [2023-08-31 11:38:36,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 1975 places, 1910 transitions, 8305 flow [2023-08-31 11:38:36,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1975 places, 1910 transitions, 8305 flow [2023-08-31 11:38:36,859 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:38:36,859 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1975 places, 1910 transitions, 8305 flow [2023-08-31 11:38:36,860 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1975 places, 1910 transitions, 8305 flow [2023-08-31 11:38:36,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1975 places, 1910 transitions, 8305 flow [2023-08-31 11:38:39,250 INFO L130 PetriNetUnfolder]: 131/2688 cut-off events. [2023-08-31 11:38:39,251 INFO L131 PetriNetUnfolder]: For 47840/47840 co-relation queries the response was YES. [2023-08-31 11:38:39,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5029 conditions, 2688 events. 131/2688 cut-off events. For 47840/47840 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9899 event pairs, 0 based on Foata normal form. 0/2036 useless extension candidates. Maximal degree in co-relation 4910. Up to 132 conditions per place. [2023-08-31 11:38:40,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 3425240 [2023-08-31 11:38:53,319 INFO L134 LiptonReduction]: Checked pairs total: 14860540 [2023-08-31 11:38:53,319 INFO L136 LiptonReduction]: Total number of compositions: 929 [2023-08-31 11:38:53,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:38:53,320 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:38:53,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:38:54,193 INFO L130 PetriNetUnfolder]: 31/1509 cut-off events. [2023-08-31 11:38:54,193 INFO L131 PetriNetUnfolder]: For 47840/47840 co-relation queries the response was YES. [2023-08-31 11:38:54,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:38:54,193 INFO L208 CegarLoopForPetriNet]: trace histogram [66, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:38:54,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:38:54,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:38:54,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2117049158, now seen corresponding path program 1 times [2023-08-31 11:38:54,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:38:54,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539333782] [2023-08-31 11:38:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:38:54,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:38:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:38:54,289 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:38:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:38:54,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:38:54,439 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:38:54,439 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:38:54,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-08-31 11:38:54,440 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:38:54,440 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:38:54,440 WARN L233 ceAbstractionStarter]: 65 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:38:54,440 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 66 thread instances. [2023-08-31 11:38:54,615 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:38:54,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2005 places, 1939 transitions, 8498 flow [2023-08-31 11:38:57,038 INFO L130 PetriNetUnfolder]: 133/2729 cut-off events. [2023-08-31 11:38:57,038 INFO L131 PetriNetUnfolder]: For 50050/50050 co-relation queries the response was YES. [2023-08-31 11:38:57,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5139 conditions, 2729 events. 133/2729 cut-off events. For 50050/50050 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10076 event pairs, 0 based on Foata normal form. 0/2067 useless extension candidates. Maximal degree in co-relation 5019. Up to 134 conditions per place. [2023-08-31 11:38:57,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 2005 places, 1939 transitions, 8498 flow [2023-08-31 11:38:57,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2005 places, 1939 transitions, 8498 flow [2023-08-31 11:38:57,232 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:38:57,232 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2005 places, 1939 transitions, 8498 flow [2023-08-31 11:38:57,232 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2005 places, 1939 transitions, 8498 flow [2023-08-31 11:38:57,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2005 places, 1939 transitions, 8498 flow [2023-08-31 11:38:59,741 INFO L130 PetriNetUnfolder]: 133/2729 cut-off events. [2023-08-31 11:38:59,742 INFO L131 PetriNetUnfolder]: For 50050/50050 co-relation queries the response was YES. [2023-08-31 11:38:59,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5139 conditions, 2729 events. 133/2729 cut-off events. For 50050/50050 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10076 event pairs, 0 based on Foata normal form. 0/2067 useless extension candidates. Maximal degree in co-relation 5019. Up to 134 conditions per place. [2023-08-31 11:39:00,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 3531528 [2023-08-31 11:39:13,619 INFO L134 LiptonReduction]: Checked pairs total: 15281989 [2023-08-31 11:39:13,620 INFO L136 LiptonReduction]: Total number of compositions: 946 [2023-08-31 11:39:13,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:39:13,621 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:39:13,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:39:14,579 INFO L130 PetriNetUnfolder]: 32/1533 cut-off events. [2023-08-31 11:39:14,579 INFO L131 PetriNetUnfolder]: For 50050/50050 co-relation queries the response was YES. [2023-08-31 11:39:14,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:39:14,580 INFO L208 CegarLoopForPetriNet]: trace histogram [67, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:39:14,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:39:14,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:39:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash -164649539, now seen corresponding path program 1 times [2023-08-31 11:39:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:39:14,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316161017] [2023-08-31 11:39:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:39:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:39:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:39:14,672 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:39:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:39:14,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:39:14,797 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:39:14,798 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:39:14,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-08-31 11:39:14,798 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:39:14,798 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:39:14,798 WARN L233 ceAbstractionStarter]: 66 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:39:14,798 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 67 thread instances. [2023-08-31 11:39:14,929 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:39:14,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2035 places, 1968 transitions, 8693 flow [2023-08-31 11:39:17,435 INFO L130 PetriNetUnfolder]: 135/2770 cut-off events. [2023-08-31 11:39:17,435 INFO L131 PetriNetUnfolder]: For 52327/52327 co-relation queries the response was YES. [2023-08-31 11:39:17,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5250 conditions, 2770 events. 135/2770 cut-off events. For 52327/52327 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10233 event pairs, 0 based on Foata normal form. 0/2098 useless extension candidates. Maximal degree in co-relation 5129. Up to 136 conditions per place. [2023-08-31 11:39:17,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 2035 places, 1968 transitions, 8693 flow [2023-08-31 11:39:17,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2035 places, 1968 transitions, 8693 flow [2023-08-31 11:39:17,635 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:39:17,635 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2035 places, 1968 transitions, 8693 flow [2023-08-31 11:39:17,635 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2035 places, 1968 transitions, 8693 flow [2023-08-31 11:39:17,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2035 places, 1968 transitions, 8693 flow [2023-08-31 11:39:20,161 INFO L130 PetriNetUnfolder]: 135/2770 cut-off events. [2023-08-31 11:39:20,162 INFO L131 PetriNetUnfolder]: For 52327/52327 co-relation queries the response was YES. [2023-08-31 11:39:20,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5250 conditions, 2770 events. 135/2770 cut-off events. For 52327/52327 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10233 event pairs, 0 based on Foata normal form. 0/2098 useless extension candidates. Maximal degree in co-relation 5129. Up to 136 conditions per place. [2023-08-31 11:39:21,332 INFO L119 LiptonReduction]: Number of co-enabled transitions 3639440 [2023-08-31 11:39:34,277 INFO L134 LiptonReduction]: Checked pairs total: 15837548 [2023-08-31 11:39:34,277 INFO L136 LiptonReduction]: Total number of compositions: 959 [2023-08-31 11:39:34,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:39:34,279 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:39:34,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:39:35,263 INFO L130 PetriNetUnfolder]: 32/1556 cut-off events. [2023-08-31 11:39:35,263 INFO L131 PetriNetUnfolder]: For 52327/52327 co-relation queries the response was YES. [2023-08-31 11:39:35,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:39:35,263 INFO L208 CegarLoopForPetriNet]: trace histogram [68, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:39:35,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:39:35,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:39:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2063052297, now seen corresponding path program 1 times [2023-08-31 11:39:35,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:39:35,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424503740] [2023-08-31 11:39:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:39:35,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:39:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:39:35,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:39:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:39:35,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:39:35,492 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:39:35,492 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:39:35,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-08-31 11:39:35,492 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:39:35,493 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:39:35,493 WARN L233 ceAbstractionStarter]: 67 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:39:35,493 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 68 thread instances. [2023-08-31 11:39:35,628 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:39:35,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2065 places, 1997 transitions, 8890 flow [2023-08-31 11:39:38,211 INFO L130 PetriNetUnfolder]: 137/2811 cut-off events. [2023-08-31 11:39:38,211 INFO L131 PetriNetUnfolder]: For 54672/54672 co-relation queries the response was YES. [2023-08-31 11:39:38,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5362 conditions, 2811 events. 137/2811 cut-off events. For 54672/54672 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10366 event pairs, 0 based on Foata normal form. 0/2129 useless extension candidates. Maximal degree in co-relation 5240. Up to 138 conditions per place. [2023-08-31 11:39:38,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 2065 places, 1997 transitions, 8890 flow [2023-08-31 11:39:38,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2065 places, 1997 transitions, 8890 flow [2023-08-31 11:39:38,412 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:39:38,412 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2065 places, 1997 transitions, 8890 flow [2023-08-31 11:39:38,412 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2065 places, 1997 transitions, 8890 flow [2023-08-31 11:39:38,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2065 places, 1997 transitions, 8890 flow [2023-08-31 11:39:40,973 INFO L130 PetriNetUnfolder]: 137/2811 cut-off events. [2023-08-31 11:39:40,973 INFO L131 PetriNetUnfolder]: For 54672/54672 co-relation queries the response was YES. [2023-08-31 11:39:41,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5362 conditions, 2811 events. 137/2811 cut-off events. For 54672/54672 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10366 event pairs, 0 based on Foata normal form. 0/2129 useless extension candidates. Maximal degree in co-relation 5240. Up to 138 conditions per place. [2023-08-31 11:39:42,161 INFO L119 LiptonReduction]: Number of co-enabled transitions 3748976 [2023-08-31 11:39:55,320 INFO L134 LiptonReduction]: Checked pairs total: 16239777 [2023-08-31 11:39:55,320 INFO L136 LiptonReduction]: Total number of compositions: 956 [2023-08-31 11:39:55,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:39:55,322 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:39:55,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:39:56,313 INFO L130 PetriNetUnfolder]: 41/1588 cut-off events. [2023-08-31 11:39:56,313 INFO L131 PetriNetUnfolder]: For 54672/54672 co-relation queries the response was YES. [2023-08-31 11:39:56,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:39:56,314 INFO L208 CegarLoopForPetriNet]: trace histogram [69, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:39:56,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:39:56,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:39:56,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1485247637, now seen corresponding path program 1 times [2023-08-31 11:39:56,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:39:56,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590127087] [2023-08-31 11:39:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:39:56,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:39:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:39:56,429 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:39:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:39:56,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:39:56,564 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:39:56,564 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:39:56,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-08-31 11:39:56,564 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:39:56,564 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:39:56,564 WARN L233 ceAbstractionStarter]: 68 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:39:56,564 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 69 thread instances. [2023-08-31 11:39:56,716 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:39:56,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2095 places, 2026 transitions, 9089 flow [2023-08-31 11:39:59,361 INFO L130 PetriNetUnfolder]: 139/2852 cut-off events. [2023-08-31 11:39:59,361 INFO L131 PetriNetUnfolder]: For 57086/57086 co-relation queries the response was YES. [2023-08-31 11:39:59,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5475 conditions, 2852 events. 139/2852 cut-off events. For 57086/57086 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10498 event pairs, 0 based on Foata normal form. 0/2160 useless extension candidates. Maximal degree in co-relation 5352. Up to 140 conditions per place. [2023-08-31 11:39:59,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 2095 places, 2026 transitions, 9089 flow [2023-08-31 11:39:59,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2095 places, 2026 transitions, 9089 flow [2023-08-31 11:39:59,569 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:39:59,569 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2095 places, 2026 transitions, 9089 flow [2023-08-31 11:39:59,569 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2095 places, 2026 transitions, 9089 flow [2023-08-31 11:39:59,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2095 places, 2026 transitions, 9089 flow [2023-08-31 11:40:02,428 INFO L130 PetriNetUnfolder]: 139/2852 cut-off events. [2023-08-31 11:40:02,428 INFO L131 PetriNetUnfolder]: For 57086/57086 co-relation queries the response was YES. [2023-08-31 11:40:02,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5475 conditions, 2852 events. 139/2852 cut-off events. For 57086/57086 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10498 event pairs, 0 based on Foata normal form. 0/2160 useless extension candidates. Maximal degree in co-relation 5352. Up to 140 conditions per place. [2023-08-31 11:40:03,684 INFO L119 LiptonReduction]: Number of co-enabled transitions 3860136 [2023-08-31 11:40:16,601 INFO L134 LiptonReduction]: Checked pairs total: 16615265 [2023-08-31 11:40:16,601 INFO L136 LiptonReduction]: Total number of compositions: 975 [2023-08-31 11:40:16,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:40:16,603 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:40:16,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:40:17,521 INFO L130 PetriNetUnfolder]: 40/1610 cut-off events. [2023-08-31 11:40:17,522 INFO L131 PetriNetUnfolder]: For 57086/57086 co-relation queries the response was YES. [2023-08-31 11:40:17,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:40:17,522 INFO L208 CegarLoopForPetriNet]: trace histogram [70, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:40:17,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:40:17,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:40:17,522 INFO L85 PathProgramCache]: Analyzing trace with hash -694423297, now seen corresponding path program 1 times [2023-08-31 11:40:17,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:40:17,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639505850] [2023-08-31 11:40:17,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:40:17,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:40:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:40:17,644 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:40:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:40:17,806 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:40:17,807 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:40:17,807 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:40:17,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-08-31 11:40:17,807 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:40:17,808 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:40:17,808 WARN L233 ceAbstractionStarter]: 69 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:40:17,808 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 70 thread instances. [2023-08-31 11:40:17,964 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:40:17,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2125 places, 2055 transitions, 9290 flow [2023-08-31 11:40:20,575 INFO L130 PetriNetUnfolder]: 141/2893 cut-off events. [2023-08-31 11:40:20,575 INFO L131 PetriNetUnfolder]: For 59570/59570 co-relation queries the response was YES. [2023-08-31 11:40:20,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5589 conditions, 2893 events. 141/2893 cut-off events. For 59570/59570 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10648 event pairs, 0 based on Foata normal form. 0/2191 useless extension candidates. Maximal degree in co-relation 5465. Up to 142 conditions per place. [2023-08-31 11:40:20,776 INFO L82 GeneralOperation]: Start removeDead. Operand has 2125 places, 2055 transitions, 9290 flow [2023-08-31 11:40:20,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2125 places, 2055 transitions, 9290 flow [2023-08-31 11:40:20,800 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:40:20,800 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2125 places, 2055 transitions, 9290 flow [2023-08-31 11:40:20,800 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2125 places, 2055 transitions, 9290 flow [2023-08-31 11:40:20,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2125 places, 2055 transitions, 9290 flow [2023-08-31 11:40:23,587 INFO L130 PetriNetUnfolder]: 141/2893 cut-off events. [2023-08-31 11:40:23,587 INFO L131 PetriNetUnfolder]: For 59570/59570 co-relation queries the response was YES. [2023-08-31 11:40:23,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5589 conditions, 2893 events. 141/2893 cut-off events. For 59570/59570 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10648 event pairs, 0 based on Foata normal form. 0/2191 useless extension candidates. Maximal degree in co-relation 5465. Up to 142 conditions per place. [2023-08-31 11:40:25,260 INFO L119 LiptonReduction]: Number of co-enabled transitions 3972920 [2023-08-31 11:40:39,588 INFO L134 LiptonReduction]: Checked pairs total: 17169075 [2023-08-31 11:40:39,589 INFO L136 LiptonReduction]: Total number of compositions: 992 [2023-08-31 11:40:39,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:40:39,590 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:40:39,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:40:40,499 INFO L130 PetriNetUnfolder]: 38/1631 cut-off events. [2023-08-31 11:40:40,500 INFO L131 PetriNetUnfolder]: For 59570/59570 co-relation queries the response was YES. [2023-08-31 11:40:40,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:40:40,500 INFO L208 CegarLoopForPetriNet]: trace histogram [71, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:40:40,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:40:40,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:40:40,500 INFO L85 PathProgramCache]: Analyzing trace with hash 953789546, now seen corresponding path program 1 times [2023-08-31 11:40:40,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:40:40,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595650908] [2023-08-31 11:40:40,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:40:40,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:40:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:40:40,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:40:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:40:40,815 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:40:40,816 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:40:40,816 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:40:40,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-08-31 11:40:40,816 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:40:40,817 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:40:40,817 WARN L233 ceAbstractionStarter]: 70 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:40:40,817 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 71 thread instances. [2023-08-31 11:40:40,956 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:40:40,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2155 places, 2084 transitions, 9493 flow [2023-08-31 11:40:43,676 INFO L130 PetriNetUnfolder]: 143/2934 cut-off events. [2023-08-31 11:40:43,677 INFO L131 PetriNetUnfolder]: For 62125/62125 co-relation queries the response was YES. [2023-08-31 11:40:43,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5704 conditions, 2934 events. 143/2934 cut-off events. For 62125/62125 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10866 event pairs, 0 based on Foata normal form. 0/2222 useless extension candidates. Maximal degree in co-relation 5579. Up to 144 conditions per place. [2023-08-31 11:40:43,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 2155 places, 2084 transitions, 9493 flow [2023-08-31 11:40:43,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2155 places, 2084 transitions, 9493 flow [2023-08-31 11:40:43,907 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:40:43,907 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2155 places, 2084 transitions, 9493 flow [2023-08-31 11:40:43,908 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2155 places, 2084 transitions, 9493 flow [2023-08-31 11:40:43,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2155 places, 2084 transitions, 9493 flow [2023-08-31 11:40:46,874 INFO L130 PetriNetUnfolder]: 143/2934 cut-off events. [2023-08-31 11:40:46,874 INFO L131 PetriNetUnfolder]: For 62125/62125 co-relation queries the response was YES. [2023-08-31 11:40:47,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5704 conditions, 2934 events. 143/2934 cut-off events. For 62125/62125 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10866 event pairs, 0 based on Foata normal form. 0/2222 useless extension candidates. Maximal degree in co-relation 5579. Up to 144 conditions per place. [2023-08-31 11:40:48,178 INFO L119 LiptonReduction]: Number of co-enabled transitions 4087328 [2023-08-31 11:41:01,875 INFO L134 LiptonReduction]: Checked pairs total: 17808850 [2023-08-31 11:41:01,875 INFO L136 LiptonReduction]: Total number of compositions: 1023 [2023-08-31 11:41:01,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:41:01,876 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:41:01,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:41:02,996 INFO L130 PetriNetUnfolder]: 30/1646 cut-off events. [2023-08-31 11:41:02,996 INFO L131 PetriNetUnfolder]: For 62125/62125 co-relation queries the response was YES. [2023-08-31 11:41:02,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:41:02,996 INFO L208 CegarLoopForPetriNet]: trace histogram [72, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:41:02,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:41:02,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:41:02,997 INFO L85 PathProgramCache]: Analyzing trace with hash 283491023, now seen corresponding path program 1 times [2023-08-31 11:41:02,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:41:02,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292497029] [2023-08-31 11:41:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:41:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:41:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:41:03,113 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:41:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:41:03,281 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:41:03,281 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:41:03,281 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:41:03,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-08-31 11:41:03,282 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:41:03,282 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:41:03,282 WARN L233 ceAbstractionStarter]: 71 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:41:03,282 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 72 thread instances. [2023-08-31 11:41:03,467 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:41:03,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2185 places, 2113 transitions, 9698 flow [2023-08-31 11:41:06,657 INFO L130 PetriNetUnfolder]: 145/2975 cut-off events. [2023-08-31 11:41:06,658 INFO L131 PetriNetUnfolder]: For 64752/64752 co-relation queries the response was YES. [2023-08-31 11:41:06,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5820 conditions, 2975 events. 145/2975 cut-off events. For 64752/64752 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 11013 event pairs, 0 based on Foata normal form. 0/2253 useless extension candidates. Maximal degree in co-relation 5694. Up to 146 conditions per place. [2023-08-31 11:41:06,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 2185 places, 2113 transitions, 9698 flow [2023-08-31 11:41:06,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2185 places, 2113 transitions, 9698 flow [2023-08-31 11:41:06,897 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:41:06,897 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2185 places, 2113 transitions, 9698 flow [2023-08-31 11:41:06,898 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2185 places, 2113 transitions, 9698 flow [2023-08-31 11:41:06,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2185 places, 2113 transitions, 9698 flow [2023-08-31 11:41:09,788 INFO L130 PetriNetUnfolder]: 145/2975 cut-off events. [2023-08-31 11:41:09,788 INFO L131 PetriNetUnfolder]: For 64752/64752 co-relation queries the response was YES. [2023-08-31 11:41:10,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5820 conditions, 2975 events. 145/2975 cut-off events. For 64752/64752 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 11013 event pairs, 0 based on Foata normal form. 0/2253 useless extension candidates. Maximal degree in co-relation 5694. Up to 146 conditions per place. [2023-08-31 11:41:11,151 INFO L119 LiptonReduction]: Number of co-enabled transitions 4203360 [2023-08-31 11:41:25,095 INFO L134 LiptonReduction]: Checked pairs total: 18159632 [2023-08-31 11:41:25,095 INFO L136 LiptonReduction]: Total number of compositions: 1032 [2023-08-31 11:41:25,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:41:25,097 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;@4afdf870, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:41:25,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:41:26,327 INFO L130 PetriNetUnfolder]: 34/1673 cut-off events. [2023-08-31 11:41:26,327 INFO L131 PetriNetUnfolder]: For 64752/64752 co-relation queries the response was YES. [2023-08-31 11:41:26,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:41:26,327 INFO L208 CegarLoopForPetriNet]: trace histogram [73, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:41:26,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:41:26,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:41:26,328 INFO L85 PathProgramCache]: Analyzing trace with hash 633305007, now seen corresponding path program 1 times [2023-08-31 11:41:26,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:41:26,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137193332] [2023-08-31 11:41:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:41:26,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:41:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:41:26,446 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:41:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:41:26,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:41:26,623 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:41:26,624 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:41:26,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-08-31 11:41:26,624 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:41:26,624 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:41:26,624 WARN L233 ceAbstractionStarter]: 72 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:41:26,625 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 73 thread instances. [2023-08-31 11:41:26,807 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:41:26,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2215 places, 2142 transitions, 9905 flow [2023-08-31 11:41:29,813 INFO L130 PetriNetUnfolder]: 147/3016 cut-off events. [2023-08-31 11:41:29,813 INFO L131 PetriNetUnfolder]: For 67452/67452 co-relation queries the response was YES. [2023-08-31 11:41:30,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5937 conditions, 3016 events. 147/3016 cut-off events. For 67452/67452 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 11127 event pairs, 0 based on Foata normal form. 0/2284 useless extension candidates. Maximal degree in co-relation 5810. Up to 148 conditions per place. [2023-08-31 11:41:30,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 2215 places, 2142 transitions, 9905 flow [2023-08-31 11:41:30,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2215 places, 2142 transitions, 9905 flow [2023-08-31 11:41:30,057 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:41:30,057 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2215 places, 2142 transitions, 9905 flow [2023-08-31 11:41:30,057 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2215 places, 2142 transitions, 9905 flow [2023-08-31 11:41:30,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2215 places, 2142 transitions, 9905 flow [2023-08-31 11:41:33,015 INFO L130 PetriNetUnfolder]: 147/3016 cut-off events. [2023-08-31 11:41:33,015 INFO L131 PetriNetUnfolder]: For 67452/67452 co-relation queries the response was YES. Killed by 15