./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 10:53:33,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:53:33,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:53:33,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:53:33,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:53:33,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:53:33,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:53:33,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:53:33,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:53:33,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:53:33,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:53:33,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:53:33,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:53:33,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:53:33,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:53:33,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:53:33,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:53:33,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:53:33,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:53:33,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:53:33,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:53:33,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:53:33,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:53:33,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:53:33,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:53:33,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:53:33,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:53:33,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:53:33,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:53:33,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:53:33,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:53:33,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:53:33,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:53:33,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:53:33,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:53:33,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:53:33,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:53:33,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:53:33,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:53:33,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:53:33,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:53:33,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:53:33,778 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:53:33,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:53:33,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:53:33,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:53:33,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:53:33,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:53:33,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:53:33,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:53:33,780 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:53:33,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:53:33,781 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:53:33,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:53:33,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:53:33,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:53:33,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:53:33,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:53:33,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:53:33,782 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:53:33,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:53:33,783 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:53:33,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:53:33,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:53:33,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:53:33,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:53:33,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:53:33,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:53:33,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:53:33,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:53:33,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:53:33,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:53:33,784 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:53:33,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:53:33,785 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:53:33,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:53:33,785 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:53:33,785 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:53:34,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:53:34,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:53:34,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:53:34,023 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:53:34,023 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:53:34,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-09-01 10:53:35,102 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:53:35,298 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:53:35,298 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-09-01 10:53:35,308 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e5dfc219/46d35bdca62243c0a3137d79f995f338/FLAG1a166bac0 [2023-09-01 10:53:35,326 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e5dfc219/46d35bdca62243c0a3137d79f995f338 [2023-09-01 10:53:35,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:53:35,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:53:35,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:53:35,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:53:35,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:53:35,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:53:35" (1/1) ... [2023-09-01 10:53:35,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc3e9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35, skipping insertion in model container [2023-09-01 10:53:35,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:53:35" (1/1) ... [2023-09-01 10:53:35,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:53:35,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:53:35,529 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] [2023-09-01 10:53:35,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:53:35,566 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:53:35,608 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] [2023-09-01 10:53:35,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:53:35,653 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:53:35,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35 WrapperNode [2023-09-01 10:53:35,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:53:35,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:53:35,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:53:35,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:53:35,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35" (1/1) ... [2023-09-01 10:53:35,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35" (1/1) ... [2023-09-01 10:53:35,703 INFO L138 Inliner]: procedures = 170, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-09-01 10:53:35,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:53:35,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:53:35,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:53:35,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:53:35,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35" (1/1) ... [2023-09-01 10:53:35,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35" (1/1) ... [2023-09-01 10:53:35,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35" (1/1) ... [2023-09-01 10:53:35,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35" (1/1) ... [2023-09-01 10:53:35,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35" (1/1) ... [2023-09-01 10:53:35,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35" (1/1) ... [2023-09-01 10:53:35,722 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35" (1/1) ... [2023-09-01 10:53:35,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35" (1/1) ... [2023-09-01 10:53:35,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:53:35,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:53:35,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:53:35,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:53:35,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35" (1/1) ... [2023-09-01 10:53:35,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:53:35,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:53:35,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 10:53:35,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 10:53:35,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:53:35,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:53:35,776 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:53:35,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:53:35,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:53:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:53:35,777 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:53:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:53:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:53:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:53:35,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:53:35,778 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 10:53:35,867 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:53:35,869 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:53:36,040 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:53:36,045 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:53:36,045 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 10:53:36,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:53:36 BoogieIcfgContainer [2023-09-01 10:53:36,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:53:36,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:53:36,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:53:36,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:53:36,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:53:35" (1/3) ... [2023-09-01 10:53:36,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c5e108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:53:36, skipping insertion in model container [2023-09-01 10:53:36,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:53:35" (2/3) ... [2023-09-01 10:53:36,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c5e108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:53:36, skipping insertion in model container [2023-09-01 10:53:36,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:53:36" (3/3) ... [2023-09-01 10:53:36,053 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2023-09-01 10:53:36,061 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:53:36,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:53:36,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:53:36,068 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:53:36,139 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 10:53:36,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 115 transitions, 238 flow [2023-09-01 10:53:36,253 INFO L130 PetriNetUnfolder]: 17/150 cut-off events. [2023-09-01 10:53:36,255 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:53:36,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 150 events. 17/150 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 350 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-09-01 10:53:36,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 115 transitions, 238 flow [2023-09-01 10:53:36,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 110 transitions, 225 flow [2023-09-01 10:53:36,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:53:36,290 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 110 transitions, 225 flow [2023-09-01 10:53:36,295 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 110 transitions, 225 flow [2023-09-01 10:53:36,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 110 transitions, 225 flow [2023-09-01 10:53:36,332 INFO L130 PetriNetUnfolder]: 16/145 cut-off events. [2023-09-01 10:53:36,333 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:53:36,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 145 events. 16/145 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 334 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-09-01 10:53:36,336 INFO L119 LiptonReduction]: Number of co-enabled transitions 2706 [2023-09-01 10:53:38,824 INFO L134 LiptonReduction]: Checked pairs total: 4759 [2023-09-01 10:53:38,824 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-09-01 10:53:38,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:53:38,840 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40c70879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:53:38,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:53:38,844 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-09-01 10:53:38,845 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:53:38,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:53:38,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:53:38,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:53:38,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:53:38,850 INFO L85 PathProgramCache]: Analyzing trace with hash 104994420, now seen corresponding path program 1 times [2023-09-01 10:53:38,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:53:38,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174076450] [2023-09-01 10:53:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:53:38,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:53:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:38,959 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:53:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:38,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:53:38,992 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:53:38,993 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:53:38,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:53:38,995 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:53:38,998 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:53:38,999 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:53:38,999 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:53:39,014 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:53:39,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 150 transitions, 318 flow [2023-09-01 10:53:39,037 INFO L130 PetriNetUnfolder]: 31/244 cut-off events. [2023-09-01 10:53:39,037 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:53:39,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 244 events. 31/244 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 724 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 152. Up to 8 conditions per place. [2023-09-01 10:53:39,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 150 transitions, 318 flow [2023-09-01 10:53:39,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 150 transitions, 318 flow [2023-09-01 10:53:39,041 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:53:39,041 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 150 transitions, 318 flow [2023-09-01 10:53:39,041 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 150 transitions, 318 flow [2023-09-01 10:53:39,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 150 transitions, 318 flow [2023-09-01 10:53:39,060 INFO L130 PetriNetUnfolder]: 31/244 cut-off events. [2023-09-01 10:53:39,060 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:53:39,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 244 events. 31/244 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 724 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 152. Up to 8 conditions per place. [2023-09-01 10:53:39,069 INFO L119 LiptonReduction]: Number of co-enabled transitions 8316 [2023-09-01 10:53:41,524 INFO L134 LiptonReduction]: Checked pairs total: 16492 [2023-09-01 10:53:41,524 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-09-01 10:53:41,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:53:41,526 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;@40c70879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:53:41,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:53:41,530 INFO L130 PetriNetUnfolder]: 10/54 cut-off events. [2023-09-01 10:53:41,530 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 10:53:41,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:53:41,530 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:53:41,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:53:41,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:53:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1531901060, now seen corresponding path program 1 times [2023-09-01 10:53:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:53:41,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989722092] [2023-09-01 10:53:41,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:53:41,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:53:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:41,550 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:53:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:41,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:53:41,582 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:53:41,582 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:53:41,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:53:41,582 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:53:41,583 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:53:41,583 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:53:41,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:53:41,598 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 10:53:41,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 185 transitions, 400 flow [2023-09-01 10:53:41,624 INFO L130 PetriNetUnfolder]: 50/369 cut-off events. [2023-09-01 10:53:41,624 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:53:41,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 369 events. 50/369 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1228 event pairs, 1 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 252. Up to 16 conditions per place. [2023-09-01 10:53:41,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 185 transitions, 400 flow [2023-09-01 10:53:41,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 185 transitions, 400 flow [2023-09-01 10:53:41,628 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:53:41,629 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 185 transitions, 400 flow [2023-09-01 10:53:41,629 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 185 transitions, 400 flow [2023-09-01 10:53:41,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 185 transitions, 400 flow [2023-09-01 10:53:41,680 INFO L130 PetriNetUnfolder]: 50/369 cut-off events. [2023-09-01 10:53:41,680 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:53:41,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 369 events. 50/369 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1228 event pairs, 1 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 252. Up to 16 conditions per place. [2023-09-01 10:53:41,691 INFO L119 LiptonReduction]: Number of co-enabled transitions 16038 [2023-09-01 10:53:44,028 INFO L134 LiptonReduction]: Checked pairs total: 34965 [2023-09-01 10:53:44,028 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-09-01 10:53:44,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:53:44,031 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;@40c70879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:53:44,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:53:44,036 INFO L130 PetriNetUnfolder]: 19/91 cut-off events. [2023-09-01 10:53:44,038 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 10:53:44,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:53:44,038 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:53:44,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:53:44,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:53:44,042 INFO L85 PathProgramCache]: Analyzing trace with hash 666088430, now seen corresponding path program 1 times [2023-09-01 10:53:44,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:53:44,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987249105] [2023-09-01 10:53:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:53:44,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:53:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:44,071 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:53:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:44,119 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:53:44,119 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:53:44,120 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:53:44,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:53:44,120 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:53:44,120 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:53:44,120 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:53:44,121 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:53:44,137 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:53:44,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 220 transitions, 484 flow [2023-09-01 10:53:44,195 INFO L130 PetriNetUnfolder]: 81/558 cut-off events. [2023-09-01 10:53:44,196 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:53:44,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 558 events. 81/558 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2119 event pairs, 6 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 389. Up to 32 conditions per place. [2023-09-01 10:53:44,201 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 220 transitions, 484 flow [2023-09-01 10:53:44,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 220 transitions, 484 flow [2023-09-01 10:53:44,204 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:53:44,204 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 220 transitions, 484 flow [2023-09-01 10:53:44,204 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 220 transitions, 484 flow [2023-09-01 10:53:44,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 220 transitions, 484 flow [2023-09-01 10:53:44,246 INFO L130 PetriNetUnfolder]: 81/558 cut-off events. [2023-09-01 10:53:44,247 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:53:44,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 558 events. 81/558 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2119 event pairs, 6 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 389. Up to 32 conditions per place. [2023-09-01 10:53:44,264 INFO L119 LiptonReduction]: Number of co-enabled transitions 26136 [2023-09-01 10:53:46,731 INFO L134 LiptonReduction]: Checked pairs total: 59200 [2023-09-01 10:53:46,732 INFO L136 LiptonReduction]: Total number of compositions: 154 [2023-09-01 10:53:46,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:53:46,733 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;@40c70879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:53:46,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:53:46,740 INFO L130 PetriNetUnfolder]: 29/132 cut-off events. [2023-09-01 10:53:46,741 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 10:53:46,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:53:46,741 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:53:46,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:53:46,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:53:46,741 INFO L85 PathProgramCache]: Analyzing trace with hash 849532596, now seen corresponding path program 1 times [2023-09-01 10:53:46,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:53:46,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775498722] [2023-09-01 10:53:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:53:46,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:53:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:46,783 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:53:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:46,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:53:46,810 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:53:46,811 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:53:46,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:53:46,811 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:53:46,811 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:53:46,811 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:53:46,811 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:53:46,831 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 10:53:46,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 255 transitions, 570 flow [2023-09-01 10:53:46,929 INFO L130 PetriNetUnfolder]: 140/879 cut-off events. [2023-09-01 10:53:46,929 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:53:46,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 879 events. 140/879 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3954 event pairs, 23 based on Foata normal form. 0/749 useless extension candidates. Maximal degree in co-relation 603. Up to 80 conditions per place. [2023-09-01 10:53:46,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 255 transitions, 570 flow [2023-09-01 10:53:46,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 255 transitions, 570 flow [2023-09-01 10:53:46,944 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:53:46,944 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 255 transitions, 570 flow [2023-09-01 10:53:46,944 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 255 transitions, 570 flow [2023-09-01 10:53:46,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 255 transitions, 570 flow [2023-09-01 10:53:47,034 INFO L130 PetriNetUnfolder]: 140/879 cut-off events. [2023-09-01 10:53:47,034 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:53:47,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 879 events. 140/879 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3954 event pairs, 23 based on Foata normal form. 0/749 useless extension candidates. Maximal degree in co-relation 603. Up to 80 conditions per place. [2023-09-01 10:53:47,066 INFO L119 LiptonReduction]: Number of co-enabled transitions 38610 [2023-09-01 10:53:49,654 INFO L134 LiptonReduction]: Checked pairs total: 92266 [2023-09-01 10:53:49,654 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-09-01 10:53:49,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:53:49,660 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;@40c70879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:53:49,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:53:49,675 INFO L130 PetriNetUnfolder]: 41/178 cut-off events. [2023-09-01 10:53:49,675 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 10:53:49,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:53:49,675 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:53:49,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:53:49,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:53:49,676 INFO L85 PathProgramCache]: Analyzing trace with hash 731930635, now seen corresponding path program 1 times [2023-09-01 10:53:49,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:53:49,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029098958] [2023-09-01 10:53:49,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:53:49,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:53:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:49,721 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:53:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:49,745 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:53:49,748 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:53:49,749 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:53:49,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:53:49,749 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:53:49,750 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:53:49,750 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:53:49,752 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:53:49,778 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 10:53:49,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 290 transitions, 658 flow [2023-09-01 10:53:49,989 INFO L130 PetriNetUnfolder]: 263/1472 cut-off events. [2023-09-01 10:53:49,989 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:53:50,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 1472 events. 263/1472 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7985 event pairs, 72 based on Foata normal form. 0/1266 useless extension candidates. Maximal degree in co-relation 978. Up to 192 conditions per place. [2023-09-01 10:53:50,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 290 transitions, 658 flow [2023-09-01 10:53:50,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 290 transitions, 658 flow [2023-09-01 10:53:50,020 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:53:50,020 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 290 transitions, 658 flow [2023-09-01 10:53:50,024 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 290 transitions, 658 flow [2023-09-01 10:53:50,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 290 transitions, 658 flow [2023-09-01 10:53:50,241 INFO L130 PetriNetUnfolder]: 263/1472 cut-off events. [2023-09-01 10:53:50,241 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:53:50,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 1472 events. 263/1472 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7985 event pairs, 72 based on Foata normal form. 0/1266 useless extension candidates. Maximal degree in co-relation 978. Up to 192 conditions per place. [2023-09-01 10:53:50,333 INFO L119 LiptonReduction]: Number of co-enabled transitions 53460 [2023-09-01 10:53:53,072 INFO L134 LiptonReduction]: Checked pairs total: 142666 [2023-09-01 10:53:53,072 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-09-01 10:53:53,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:53:53,075 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;@40c70879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:53:53,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:53:53,089 INFO L130 PetriNetUnfolder]: 56/237 cut-off events. [2023-09-01 10:53:53,089 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 10:53:53,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:53:53,090 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:53:53,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:53:53,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:53:53,090 INFO L85 PathProgramCache]: Analyzing trace with hash -515950442, now seen corresponding path program 1 times [2023-09-01 10:53:53,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:53:53,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180294526] [2023-09-01 10:53:53,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:53:53,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:53:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:53,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:53:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:53,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:53:53,145 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:53:53,145 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:53:53,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:53:53,146 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:53:53,146 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:53:53,146 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:53:53,146 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:53:53,163 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 10:53:53,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 325 transitions, 748 flow [2023-09-01 10:53:53,468 INFO L130 PetriNetUnfolder]: 530/2625 cut-off events. [2023-09-01 10:53:53,468 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:53:53,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 2625 events. 530/2625 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17144 event pairs, 201 based on Foata normal form. 0/2279 useless extension candidates. Maximal degree in co-relation 1690. Up to 448 conditions per place. [2023-09-01 10:53:53,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 325 transitions, 748 flow [2023-09-01 10:53:53,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 286 places, 325 transitions, 748 flow [2023-09-01 10:53:53,526 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:53:53,526 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 286 places, 325 transitions, 748 flow [2023-09-01 10:53:53,526 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 286 places, 325 transitions, 748 flow [2023-09-01 10:53:53,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 325 transitions, 748 flow [2023-09-01 10:53:53,865 INFO L130 PetriNetUnfolder]: 530/2625 cut-off events. [2023-09-01 10:53:53,866 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:53:53,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 2625 events. 530/2625 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17144 event pairs, 201 based on Foata normal form. 0/2279 useless extension candidates. Maximal degree in co-relation 1690. Up to 448 conditions per place. [2023-09-01 10:53:54,079 INFO L119 LiptonReduction]: Number of co-enabled transitions 70686 [2023-09-01 10:53:56,204 INFO L134 LiptonReduction]: Checked pairs total: 172279 [2023-09-01 10:53:56,204 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-09-01 10:53:56,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:53:56,235 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;@40c70879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:53:56,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:53:56,274 INFO L130 PetriNetUnfolder]: 76/314 cut-off events. [2023-09-01 10:53:56,274 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 10:53:56,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:53:56,274 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:53:56,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:53:56,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:53:56,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1287108619, now seen corresponding path program 1 times [2023-09-01 10:53:56,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:53:56,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74908471] [2023-09-01 10:53:56,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:53:56,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:53:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:56,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:53:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:56,346 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:53:56,346 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:53:56,346 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:53:56,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:53:56,347 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:53:56,347 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:53:56,347 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:53:56,347 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 10:53:56,377 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:53:56,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 360 transitions, 840 flow [2023-09-01 10:53:57,317 INFO L130 PetriNetUnfolder]: 1117/4930 cut-off events. [2023-09-01 10:53:57,317 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:53:57,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6015 conditions, 4930 events. 1117/4930 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 38256 event pairs, 522 based on Foata normal form. 0/4316 useless extension candidates. Maximal degree in co-relation 3107. Up to 1024 conditions per place. [2023-09-01 10:53:57,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 360 transitions, 840 flow [2023-09-01 10:53:57,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 316 places, 360 transitions, 840 flow [2023-09-01 10:53:57,425 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:53:57,426 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 316 places, 360 transitions, 840 flow [2023-09-01 10:53:57,426 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 316 places, 360 transitions, 840 flow [2023-09-01 10:53:57,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 360 transitions, 840 flow [2023-09-01 10:53:58,352 INFO L130 PetriNetUnfolder]: 1117/4930 cut-off events. [2023-09-01 10:53:58,353 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:53:58,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6015 conditions, 4930 events. 1117/4930 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 38256 event pairs, 522 based on Foata normal form. 0/4316 useless extension candidates. Maximal degree in co-relation 3107. Up to 1024 conditions per place. [2023-09-01 10:53:58,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 90288 [2023-09-01 10:54:01,490 INFO L134 LiptonReduction]: Checked pairs total: 227084 [2023-09-01 10:54:01,490 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-09-01 10:54:01,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:01,511 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;@40c70879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:01,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:01,583 INFO L130 PetriNetUnfolder]: 105/421 cut-off events. [2023-09-01 10:54:01,583 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 10:54:01,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:01,584 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:54:01,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:01,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:01,584 INFO L85 PathProgramCache]: Analyzing trace with hash 985565748, now seen corresponding path program 1 times [2023-09-01 10:54:01,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:01,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107286811] [2023-09-01 10:54:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:01,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:01,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:01,636 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:01,636 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:01,636 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:01,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:54:01,636 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:01,638 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:01,638 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:01,638 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 10:54:01,673 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 10:54:01,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 395 transitions, 934 flow [2023-09-01 10:54:03,612 INFO L130 PetriNetUnfolder]: 2408/9603 cut-off events. [2023-09-01 10:54:03,612 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:54:03,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11980 conditions, 9603 events. 2408/9603 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 86256 event pairs, 1291 based on Foata normal form. 0/8465 useless extension candidates. Maximal degree in co-relation 5997. Up to 2304 conditions per place. [2023-09-01 10:54:03,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 346 places, 395 transitions, 934 flow [2023-09-01 10:54:04,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 346 places, 395 transitions, 934 flow [2023-09-01 10:54:04,027 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:04,027 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 346 places, 395 transitions, 934 flow [2023-09-01 10:54:04,027 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 346 places, 395 transitions, 934 flow [2023-09-01 10:54:04,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 395 transitions, 934 flow [2023-09-01 10:54:05,894 INFO L130 PetriNetUnfolder]: 2408/9603 cut-off events. [2023-09-01 10:54:05,894 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:54:06,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11980 conditions, 9603 events. 2408/9603 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 86256 event pairs, 1291 based on Foata normal form. 0/8465 useless extension candidates. Maximal degree in co-relation 5997. Up to 2304 conditions per place. [2023-09-01 10:54:06,593 INFO L119 LiptonReduction]: Number of co-enabled transitions 112266 [2023-09-01 10:54:09,374 INFO L134 LiptonReduction]: Checked pairs total: 277464 [2023-09-01 10:54:09,374 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-09-01 10:54:09,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:09,376 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;@40c70879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:09,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:09,412 INFO L130 PetriNetUnfolder]: 150/572 cut-off events. [2023-09-01 10:54:09,412 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 10:54:09,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:09,412 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:54:09,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:09,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:09,413 INFO L85 PathProgramCache]: Analyzing trace with hash -671852261, now seen corresponding path program 1 times [2023-09-01 10:54:09,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:09,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234456751] [2023-09-01 10:54:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:09,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:09,454 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:09,473 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:09,473 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:09,473 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:09,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:54:09,474 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:09,476 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:09,476 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:09,476 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 10:54:09,501 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 10:54:09,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 430 transitions, 1030 flow [2023-09-01 10:54:13,437 INFO L130 PetriNetUnfolder]: 5235/19140 cut-off events. [2023-09-01 10:54:13,437 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:54:13,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24346 conditions, 19140 events. 5235/19140 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 193932 event pairs, 3084 based on Foata normal form. 0/16966 useless extension candidates. Maximal degree in co-relation 11960. Up to 5120 conditions per place. [2023-09-01 10:54:13,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 376 places, 430 transitions, 1030 flow [2023-09-01 10:54:13,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 376 places, 430 transitions, 1030 flow [2023-09-01 10:54:13,928 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:13,929 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 376 places, 430 transitions, 1030 flow [2023-09-01 10:54:13,929 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 376 places, 430 transitions, 1030 flow [2023-09-01 10:54:13,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 430 transitions, 1030 flow [2023-09-01 10:54:17,710 INFO L130 PetriNetUnfolder]: 5235/19140 cut-off events. [2023-09-01 10:54:17,710 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:54:18,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24346 conditions, 19140 events. 5235/19140 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 193932 event pairs, 3084 based on Foata normal form. 0/16966 useless extension candidates. Maximal degree in co-relation 11960. Up to 5120 conditions per place. [2023-09-01 10:54:18,892 INFO L119 LiptonReduction]: Number of co-enabled transitions 136620 [2023-09-01 10:54:21,815 INFO L134 LiptonReduction]: Checked pairs total: 345599 [2023-09-01 10:54:21,816 INFO L136 LiptonReduction]: Total number of compositions: 280 [2023-09-01 10:54:21,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:21,818 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;@40c70879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:21,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:21,902 INFO L130 PetriNetUnfolder]: 224/796 cut-off events. [2023-09-01 10:54:21,902 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 10:54:21,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:21,902 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:54:21,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:21,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:21,903 INFO L85 PathProgramCache]: Analyzing trace with hash -362468426, now seen corresponding path program 1 times [2023-09-01 10:54:21,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:21,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998782319] [2023-09-01 10:54:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:21,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:21,923 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:21,940 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:21,940 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:21,940 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:21,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:54:21,941 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:21,941 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:21,941 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:21,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 10:54:21,976 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 10:54:21,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 406 places, 465 transitions, 1128 flow [2023-09-01 10:54:30,463 INFO L130 PetriNetUnfolder]: 11390/38661 cut-off events. [2023-09-01 10:54:30,463 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:54:31,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50025 conditions, 38661 events. 11390/38661 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 438578 event pairs, 7181 based on Foata normal form. 0/34427 useless extension candidates. Maximal degree in co-relation 24324. Up to 11264 conditions per place. [2023-09-01 10:54:31,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 406 places, 465 transitions, 1128 flow [2023-09-01 10:54:32,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 406 places, 465 transitions, 1128 flow [2023-09-01 10:54:32,559 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:32,559 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 406 places, 465 transitions, 1128 flow [2023-09-01 10:54:32,559 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 406 places, 465 transitions, 1128 flow [2023-09-01 10:54:32,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 406 places, 465 transitions, 1128 flow [2023-09-01 10:54:41,192 INFO L130 PetriNetUnfolder]: 11390/38661 cut-off events. [2023-09-01 10:54:41,192 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:54:41,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50025 conditions, 38661 events. 11390/38661 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 438578 event pairs, 7181 based on Foata normal form. 0/34427 useless extension candidates. Maximal degree in co-relation 24324. Up to 11264 conditions per place. [2023-09-01 10:54:43,887 INFO L119 LiptonReduction]: Number of co-enabled transitions 163350 [2023-09-01 10:54:47,597 INFO L134 LiptonReduction]: Checked pairs total: 409757 [2023-09-01 10:54:47,597 INFO L136 LiptonReduction]: Total number of compositions: 302 [2023-09-01 10:54:47,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:47,601 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40c70879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:47,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:47,693 INFO L130 PetriNetUnfolder]: 349/1143 cut-off events. [2023-09-01 10:54:47,693 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 10:54:47,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:47,694 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:54:47,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:47,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:47,694 INFO L85 PathProgramCache]: Analyzing trace with hash -455252395, now seen corresponding path program 1 times [2023-09-01 10:54:47,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:47,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277241111] [2023-09-01 10:54:47,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:47,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:47,744 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:47,773 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:47,777 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:47,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:47,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:54:47,777 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:47,779 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:47,779 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:47,779 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 10:54:47,810 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:54:47,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 500 transitions, 1228 flow [2023-09-01 10:55:07,368 INFO L130 PetriNetUnfolder]: 24713/78662 cut-off events. [2023-09-01 10:55:07,368 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:55:11,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103353 conditions, 78662 events. 24713/78662 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 971302 event pairs, 16398 based on Foata normal form. 0/70320 useless extension candidates. Maximal degree in co-relation 50001. Up to 24576 conditions per place. [2023-09-01 10:55:11,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 500 transitions, 1228 flow [2023-09-01 10:55:13,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 436 places, 500 transitions, 1228 flow [2023-09-01 10:55:13,397 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:55:13,398 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 436 places, 500 transitions, 1228 flow [2023-09-01 10:55:13,398 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 436 places, 500 transitions, 1228 flow [2023-09-01 10:55:13,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 500 transitions, 1228 flow [2023-09-01 10:55:33,886 INFO L130 PetriNetUnfolder]: 24713/78662 cut-off events. [2023-09-01 10:55:33,887 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:55:36,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103353 conditions, 78662 events. 24713/78662 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 971302 event pairs, 16398 based on Foata normal form. 0/70320 useless extension candidates. Maximal degree in co-relation 50001. Up to 24576 conditions per place. [2023-09-01 10:55:41,250 INFO L119 LiptonReduction]: Number of co-enabled transitions 192456 [2023-09-01 10:55:44,796 INFO L134 LiptonReduction]: Checked pairs total: 485890 [2023-09-01 10:55:44,796 INFO L136 LiptonReduction]: Total number of compositions: 317 [2023-09-01 10:55:44,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:55:44,797 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;@40c70879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:55:44,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:55:44,946 INFO L130 PetriNetUnfolder]: 560/1685 cut-off events. [2023-09-01 10:55:44,947 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 10:55:44,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:55:44,947 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:55:44,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:55:44,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:55:44,947 INFO L85 PathProgramCache]: Analyzing trace with hash 806567698, now seen corresponding path program 1 times [2023-09-01 10:55:44,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:55:44,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802304075] [2023-09-01 10:55:44,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:55:44,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:55:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:44,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:55:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:44,980 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:55:44,981 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:55:44,981 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:55:44,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:55:44,982 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:55:44,983 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:55:44,984 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:55:44,984 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 10:55:45,016 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 10:55:45,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 535 transitions, 1330 flow [2023-09-01 10:56:30,232 INFO L130 PetriNetUnfolder]: 53396/160647 cut-off events. [2023-09-01 10:56:30,232 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:56:40,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214026 conditions, 160647 events. 53396/160647 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2807. Compared 2158097 event pairs, 36879 based on Foata normal form. 0/144101 useless extension candidates. Maximal degree in co-relation 103327. Up to 53248 conditions per place. [2023-09-01 10:56:40,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 466 places, 535 transitions, 1330 flow [2023-09-01 10:56:44,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 466 places, 535 transitions, 1330 flow [2023-09-01 10:56:44,032 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:44,032 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 466 places, 535 transitions, 1330 flow [2023-09-01 10:56:44,033 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 466 places, 535 transitions, 1330 flow [2023-09-01 10:56:44,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 535 transitions, 1330 flow [2023-09-01 10:57:35,230 INFO L130 PetriNetUnfolder]: 53396/160647 cut-off events. [2023-09-01 10:57:35,230 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:57:45,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214026 conditions, 160647 events. 53396/160647 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2807. Compared 2158097 event pairs, 36879 based on Foata normal form. 0/144101 useless extension candidates. Maximal degree in co-relation 103327. Up to 53248 conditions per place. [2023-09-01 10:58:04,330 INFO L119 LiptonReduction]: Number of co-enabled transitions 223938 [2023-09-01 10:58:08,408 INFO L134 LiptonReduction]: Checked pairs total: 552579 [2023-09-01 10:58:08,408 INFO L136 LiptonReduction]: Total number of compositions: 337 [2023-09-01 10:58:08,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:08,424 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;@40c70879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:08,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:08,661 INFO L130 PetriNetUnfolder]: 913/2530 cut-off events. [2023-09-01 10:58:08,661 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 10:58:08,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:08,661 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:58:08,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:08,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:08,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1707328436, now seen corresponding path program 1 times [2023-09-01 10:58:08,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:08,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350718696] [2023-09-01 10:58:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:08,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:08,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:08,701 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:08,701 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:08,702 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:08,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 10:58:08,702 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:08,703 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:08,703 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:08,703 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 10:58:08,735 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 10:58:08,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 496 places, 570 transitions, 1434 flow