./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 09:34:01,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 09:34:01,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 09:34:01,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 09:34:01,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 09:34:01,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 09:34:01,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 09:34:01,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 09:34:01,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 09:34:01,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 09:34:01,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 09:34:01,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 09:34:01,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 09:34:01,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 09:34:01,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 09:34:01,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 09:34:01,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 09:34:01,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 09:34:01,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 09:34:01,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 09:34:01,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 09:34:01,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 09:34:01,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 09:34:01,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 09:34:01,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 09:34:01,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 09:34:01,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 09:34:01,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 09:34:01,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 09:34:01,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 09:34:01,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 09:34:01,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 09:34:01,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 09:34:01,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 09:34:01,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 09:34:01,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 09:34:01,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 09:34:01,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 09:34:01,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 09:34:01,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 09:34:01,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 09:34:01,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 09:34:01,766 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 09:34:01,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 09:34:01,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 09:34:01,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 09:34:01,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 09:34:01,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 09:34:01,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 09:34:01,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 09:34:01,769 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 09:34:01,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 09:34:01,769 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 09:34:01,769 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 09:34:01,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 09:34:01,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 09:34:01,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 09:34:01,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 09:34:01,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 09:34:01,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 09:34:01,770 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 09:34:01,771 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 09:34:01,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 09:34:01,771 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 09:34:01,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 09:34:01,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 09:34:01,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 09:34:01,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 09:34:01,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:34:01,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 09:34:01,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 09:34:01,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 09:34:01,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 09:34:01,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 09:34:01,772 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 09:34:01,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 09:34:01,773 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 09:34:01,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 09:34:01,773 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 09:34:01,773 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 09:34:01,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 09:34:01,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 09:34:01,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 09:34:02,000 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 09:34:02,001 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 09:34:02,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-29 09:34:02,909 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 09:34:03,128 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 09:34:03,129 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-29 09:34:03,137 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/673490a80/ed385b8f0616446dafddb64aaa78b6d5/FLAGbb6b27cae [2023-08-29 09:34:03,146 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/673490a80/ed385b8f0616446dafddb64aaa78b6d5 [2023-08-29 09:34:03,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 09:34:03,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 09:34:03,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 09:34:03,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 09:34:03,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 09:34:03,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:34:03" (1/1) ... [2023-08-29 09:34:03,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38cf9dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03, skipping insertion in model container [2023-08-29 09:34:03,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:34:03" (1/1) ... [2023-08-29 09:34:03,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 09:34:03,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 09:34:03,404 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2023-08-29 09:34:03,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:34:03,417 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 09:34:03,457 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2023-08-29 09:34:03,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:34:03,511 INFO L208 MainTranslator]: Completed translation [2023-08-29 09:34:03,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03 WrapperNode [2023-08-29 09:34:03,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 09:34:03,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 09:34:03,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 09:34:03,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 09:34:03,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03" (1/1) ... [2023-08-29 09:34:03,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03" (1/1) ... [2023-08-29 09:34:03,575 INFO L138 Inliner]: procedures = 172, calls = 27, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 224 [2023-08-29 09:34:03,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 09:34:03,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 09:34:03,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 09:34:03,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 09:34:03,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03" (1/1) ... [2023-08-29 09:34:03,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03" (1/1) ... [2023-08-29 09:34:03,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03" (1/1) ... [2023-08-29 09:34:03,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03" (1/1) ... [2023-08-29 09:34:03,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03" (1/1) ... [2023-08-29 09:34:03,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03" (1/1) ... [2023-08-29 09:34:03,624 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03" (1/1) ... [2023-08-29 09:34:03,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03" (1/1) ... [2023-08-29 09:34:03,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 09:34:03,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 09:34:03,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 09:34:03,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 09:34:03,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03" (1/1) ... [2023-08-29 09:34:03,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:34:03,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 09:34:03,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 09:34:03,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 09:34:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 09:34:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-29 09:34:03,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-29 09:34:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-29 09:34:03,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-29 09:34:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 09:34:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 09:34:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 09:34:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 09:34:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 09:34:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 09:34:03,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 09:34:03,698 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 09:34:03,822 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 09:34:03,824 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 09:34:04,098 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 09:34:04,234 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 09:34:04,234 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-29 09:34:04,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:34:04 BoogieIcfgContainer [2023-08-29 09:34:04,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 09:34:04,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 09:34:04,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 09:34:04,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 09:34:04,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:34:03" (1/3) ... [2023-08-29 09:34:04,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ed533f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:34:04, skipping insertion in model container [2023-08-29 09:34:04,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:03" (2/3) ... [2023-08-29 09:34:04,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ed533f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:34:04, skipping insertion in model container [2023-08-29 09:34:04,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:34:04" (3/3) ... [2023-08-29 09:34:04,241 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2023-08-29 09:34:04,246 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 09:34:04,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 09:34:04,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2023-08-29 09:34:04,252 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 09:34:04,297 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:34:04,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 122 transitions, 254 flow [2023-08-29 09:34:04,350 INFO L130 PetriNetUnfolder]: 6/131 cut-off events. [2023-08-29 09:34:04,351 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:34:04,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 131 events. 6/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 178 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-08-29 09:34:04,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 122 transitions, 254 flow [2023-08-29 09:34:04,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 121 transitions, 250 flow [2023-08-29 09:34:04,360 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:34:04,366 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 121 transitions, 250 flow [2023-08-29 09:34:04,367 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 121 transitions, 250 flow [2023-08-29 09:34:04,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 121 transitions, 250 flow [2023-08-29 09:34:04,396 INFO L130 PetriNetUnfolder]: 6/131 cut-off events. [2023-08-29 09:34:04,396 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:34:04,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 131 events. 6/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 178 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-08-29 09:34:04,399 INFO L119 LiptonReduction]: Number of co-enabled transitions 4896 [2023-08-29 09:34:06,379 INFO L134 LiptonReduction]: Checked pairs total: 14996 [2023-08-29 09:34:06,379 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-29 09:34:06,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:34:06,393 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b781fc8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:34:06,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-08-29 09:34:06,394 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2023-08-29 09:34:06,394 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:34:06,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:34:06,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:34:06,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2023-08-29 09:34:06,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:34:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash 24458726, now seen corresponding path program 1 times [2023-08-29 09:34:06,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:34:06,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042309836] [2023-08-29 09:34:06,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:34:06,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:34:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:34:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:34:06,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:34:06,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042309836] [2023-08-29 09:34:06,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042309836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:34:06,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:34:06,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:34:06,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33861746] [2023-08-29 09:34:06,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:34:06,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:34:06,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:34:06,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:34:06,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:34:06,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 198 [2023-08-29 09:34:06,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 130 flow. Second operand has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:06,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:34:06,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 198 [2023-08-29 09:34:06,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:34:06,692 INFO L130 PetriNetUnfolder]: 372/778 cut-off events. [2023-08-29 09:34:06,693 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 09:34:06,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 778 events. 372/778 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3661 event pairs, 303 based on Foata normal form. 0/738 useless extension candidates. Maximal degree in co-relation 1385. Up to 601 conditions per place. [2023-08-29 09:34:06,700 INFO L137 encePairwiseOnDemand]: 184/198 looper letters, 27 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2023-08-29 09:34:06,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 156 flow [2023-08-29 09:34:06,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:34:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:34:06,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 233 transitions. [2023-08-29 09:34:06,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5883838383838383 [2023-08-29 09:34:06,710 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 233 transitions. [2023-08-29 09:34:06,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 233 transitions. [2023-08-29 09:34:06,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:34:06,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 233 transitions. [2023-08-29 09:34:06,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:06,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:06,720 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:06,721 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 130 flow. Second operand 2 states and 233 transitions. [2023-08-29 09:34:06,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 156 flow [2023-08-29 09:34:06,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 155 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 09:34:06,725 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 101 flow [2023-08-29 09:34:06,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=101, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-08-29 09:34:06,729 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -14 predicate places. [2023-08-29 09:34:06,729 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 101 flow [2023-08-29 09:34:06,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:06,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:34:06,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 09:34:06,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 09:34:06,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2023-08-29 09:34:06,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:34:06,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2030022794, now seen corresponding path program 1 times [2023-08-29 09:34:06,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:34:06,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239643497] [2023-08-29 09:34:06,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:34:06,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:34:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:34:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:34:06,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:34:06,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239643497] [2023-08-29 09:34:06,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239643497] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:34:06,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:34:06,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:34:06,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714653336] [2023-08-29 09:34:06,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:34:06,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:34:06,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:34:06,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:34:06,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:34:06,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-08-29 09:34:06,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:06,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:34:06,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-08-29 09:34:06,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:34:07,042 INFO L130 PetriNetUnfolder]: 1083/1861 cut-off events. [2023-08-29 09:34:07,042 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-29 09:34:07,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3648 conditions, 1861 events. 1083/1861 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8177 event pairs, 319 based on Foata normal form. 0/1806 useless extension candidates. Maximal degree in co-relation 3644. Up to 1181 conditions per place. [2023-08-29 09:34:07,049 INFO L137 encePairwiseOnDemand]: 183/198 looper letters, 48 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2023-08-29 09:34:07,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 256 flow [2023-08-29 09:34:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:34:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:34:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-29 09:34:07,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2023-08-29 09:34:07,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-29 09:34:07,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-29 09:34:07,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:34:07,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-29 09:34:07,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:07,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:07,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:07,058 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 101 flow. Second operand 3 states and 294 transitions. [2023-08-29 09:34:07,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 256 flow [2023-08-29 09:34:07,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:34:07,060 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 159 flow [2023-08-29 09:34:07,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2023-08-29 09:34:07,060 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -14 predicate places. [2023-08-29 09:34:07,060 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 159 flow [2023-08-29 09:34:07,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:07,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:34:07,061 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 09:34:07,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 09:34:07,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2023-08-29 09:34:07,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:34:07,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1688986253, now seen corresponding path program 1 times [2023-08-29 09:34:07,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:34:07,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348743736] [2023-08-29 09:34:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:34:07,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:34:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:34:07,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:34:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:34:07,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:34:07,134 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:34:07,134 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (43 of 44 remaining) [2023-08-29 09:34:07,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (42 of 44 remaining) [2023-08-29 09:34:07,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (41 of 44 remaining) [2023-08-29 09:34:07,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (40 of 44 remaining) [2023-08-29 09:34:07,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (39 of 44 remaining) [2023-08-29 09:34:07,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (38 of 44 remaining) [2023-08-29 09:34:07,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (37 of 44 remaining) [2023-08-29 09:34:07,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (36 of 44 remaining) [2023-08-29 09:34:07,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (35 of 44 remaining) [2023-08-29 09:34:07,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (34 of 44 remaining) [2023-08-29 09:34:07,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (33 of 44 remaining) [2023-08-29 09:34:07,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (32 of 44 remaining) [2023-08-29 09:34:07,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (31 of 44 remaining) [2023-08-29 09:34:07,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (30 of 44 remaining) [2023-08-29 09:34:07,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (29 of 44 remaining) [2023-08-29 09:34:07,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (28 of 44 remaining) [2023-08-29 09:34:07,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (27 of 44 remaining) [2023-08-29 09:34:07,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 44 remaining) [2023-08-29 09:34:07,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 44 remaining) [2023-08-29 09:34:07,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (24 of 44 remaining) [2023-08-29 09:34:07,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 44 remaining) [2023-08-29 09:34:07,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (22 of 44 remaining) [2023-08-29 09:34:07,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 44 remaining) [2023-08-29 09:34:07,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (20 of 44 remaining) [2023-08-29 09:34:07,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (19 of 44 remaining) [2023-08-29 09:34:07,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (18 of 44 remaining) [2023-08-29 09:34:07,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (17 of 44 remaining) [2023-08-29 09:34:07,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (16 of 44 remaining) [2023-08-29 09:34:07,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (15 of 44 remaining) [2023-08-29 09:34:07,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (14 of 44 remaining) [2023-08-29 09:34:07,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (13 of 44 remaining) [2023-08-29 09:34:07,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (12 of 44 remaining) [2023-08-29 09:34:07,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (11 of 44 remaining) [2023-08-29 09:34:07,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (10 of 44 remaining) [2023-08-29 09:34:07,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (9 of 44 remaining) [2023-08-29 09:34:07,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (8 of 44 remaining) [2023-08-29 09:34:07,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (7 of 44 remaining) [2023-08-29 09:34:07,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (6 of 44 remaining) [2023-08-29 09:34:07,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (5 of 44 remaining) [2023-08-29 09:34:07,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 44 remaining) [2023-08-29 09:34:07,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 44 remaining) [2023-08-29 09:34:07,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 44 remaining) [2023-08-29 09:34:07,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 44 remaining) [2023-08-29 09:34:07,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 44 remaining) [2023-08-29 09:34:07,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 09:34:07,141 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 09:34:07,142 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:34:07,142 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 09:34:07,177 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:34:07,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 210 transitions, 444 flow [2023-08-29 09:34:07,205 INFO L130 PetriNetUnfolder]: 8/211 cut-off events. [2023-08-29 09:34:07,206 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 09:34:07,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 211 events. 8/211 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 432 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 220. Up to 6 conditions per place. [2023-08-29 09:34:07,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 210 transitions, 444 flow [2023-08-29 09:34:07,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 189 transitions, 393 flow [2023-08-29 09:34:07,209 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:34:07,209 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 189 transitions, 393 flow [2023-08-29 09:34:07,210 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 189 transitions, 393 flow [2023-08-29 09:34:07,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 189 transitions, 393 flow [2023-08-29 09:34:07,227 INFO L130 PetriNetUnfolder]: 8/211 cut-off events. [2023-08-29 09:34:07,228 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 09:34:07,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 211 events. 8/211 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 432 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 199. Up to 6 conditions per place. [2023-08-29 09:34:07,234 INFO L119 LiptonReduction]: Number of co-enabled transitions 18334 [2023-08-29 09:34:09,551 INFO L134 LiptonReduction]: Checked pairs total: 82053 [2023-08-29 09:34:09,551 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-29 09:34:09,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:34:09,553 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b781fc8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:34:09,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2023-08-29 09:34:09,555 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:34:09,555 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:34:09,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:34:09,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:34:09,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-08-29 09:34:09,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:34:09,556 INFO L85 PathProgramCache]: Analyzing trace with hash 36625737, now seen corresponding path program 1 times [2023-08-29 09:34:09,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:34:09,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129719135] [2023-08-29 09:34:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:34:09,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:34:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:34:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:34:09,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:34:09,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129719135] [2023-08-29 09:34:09,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129719135] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:34:09,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:34:09,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:34:09,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817904625] [2023-08-29 09:34:09,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:34:09,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:34:09,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:34:09,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:34:09,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:34:09,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 308 [2023-08-29 09:34:09,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 239 flow. Second operand has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:09,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:34:09,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 308 [2023-08-29 09:34:09,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:34:10,319 INFO L130 PetriNetUnfolder]: 4452/9234 cut-off events. [2023-08-29 09:34:10,319 INFO L131 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2023-08-29 09:34:10,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15733 conditions, 9234 events. 4452/9234 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 74084 event pairs, 3759 based on Foata normal form. 0/8307 useless extension candidates. Maximal degree in co-relation 15722. Up to 6265 conditions per place. [2023-08-29 09:34:10,361 INFO L137 encePairwiseOnDemand]: 286/308 looper letters, 38 selfloop transitions, 0 changer transitions 0/90 dead transitions. [2023-08-29 09:34:10,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 271 flow [2023-08-29 09:34:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:34:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:34:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 380 transitions. [2023-08-29 09:34:10,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168831168831169 [2023-08-29 09:34:10,363 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 380 transitions. [2023-08-29 09:34:10,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 380 transitions. [2023-08-29 09:34:10,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:34:10,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 380 transitions. [2023-08-29 09:34:10,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 190.0) internal successors, (380), 2 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:10,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:10,366 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:10,366 INFO L175 Difference]: Start difference. First operand has 117 places, 112 transitions, 239 flow. Second operand 2 states and 380 transitions. [2023-08-29 09:34:10,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 271 flow [2023-08-29 09:34:10,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 268 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 09:34:10,370 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 192 flow [2023-08-29 09:34:10,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=192, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2023-08-29 09:34:10,372 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -22 predicate places. [2023-08-29 09:34:10,373 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 192 flow [2023-08-29 09:34:10,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:10,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:34:10,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 09:34:10,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 09:34:10,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-08-29 09:34:10,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:34:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash 837628812, now seen corresponding path program 1 times [2023-08-29 09:34:10,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:34:10,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700899828] [2023-08-29 09:34:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:34:10,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:34:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:34:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:34:10,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:34:10,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700899828] [2023-08-29 09:34:10,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700899828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:34:10,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:34:10,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:34:10,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269670961] [2023-08-29 09:34:10,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:34:10,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:34:10,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:34:10,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:34:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:34:10,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 308 [2023-08-29 09:34:10,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:10,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:34:10,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 308 [2023-08-29 09:34:10,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:34:14,120 INFO L130 PetriNetUnfolder]: 35440/56349 cut-off events. [2023-08-29 09:34:14,120 INFO L131 PetriNetUnfolder]: For 640/640 co-relation queries the response was YES. [2023-08-29 09:34:14,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107965 conditions, 56349 events. 35440/56349 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 450099 event pairs, 12407 based on Foata normal form. 0/53059 useless extension candidates. Maximal degree in co-relation 107960. Up to 30526 conditions per place. [2023-08-29 09:34:14,410 INFO L137 encePairwiseOnDemand]: 273/308 looper letters, 95 selfloop transitions, 26 changer transitions 0/145 dead transitions. [2023-08-29 09:34:14,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 145 transitions, 552 flow [2023-08-29 09:34:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:34:14,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:34:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-29 09:34:14,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367965367965368 [2023-08-29 09:34:14,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-29 09:34:14,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-29 09:34:14,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:34:14,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-29 09:34:14,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:14,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:14,415 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:14,415 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 192 flow. Second operand 3 states and 496 transitions. [2023-08-29 09:34:14,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 145 transitions, 552 flow [2023-08-29 09:34:14,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 145 transitions, 552 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:34:14,418 INFO L231 Difference]: Finished difference. Result has 99 places, 116 transitions, 418 flow [2023-08-29 09:34:14,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=99, PETRI_TRANSITIONS=116} [2023-08-29 09:34:14,419 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -18 predicate places. [2023-08-29 09:34:14,419 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 116 transitions, 418 flow [2023-08-29 09:34:14,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:14,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:34:14,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:34:14,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 09:34:14,420 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-08-29 09:34:14,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:34:14,420 INFO L85 PathProgramCache]: Analyzing trace with hash -311461719, now seen corresponding path program 1 times [2023-08-29 09:34:14,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:34:14,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414012368] [2023-08-29 09:34:14,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:34:14,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:34:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:34:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:34:14,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:34:14,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414012368] [2023-08-29 09:34:14,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414012368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:34:14,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:34:14,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:34:14,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618912230] [2023-08-29 09:34:14,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:34:14,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:34:14,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:34:14,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:34:14,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:34:14,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 308 [2023-08-29 09:34:14,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 116 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:14,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:34:14,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 308 [2023-08-29 09:34:14,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:34:17,776 INFO L130 PetriNetUnfolder]: 28872/48883 cut-off events. [2023-08-29 09:34:17,776 INFO L131 PetriNetUnfolder]: For 18553/19185 co-relation queries the response was YES. [2023-08-29 09:34:17,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114887 conditions, 48883 events. 28872/48883 cut-off events. For 18553/19185 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 412716 event pairs, 17656 based on Foata normal form. 82/45878 useless extension candidates. Maximal degree in co-relation 114880. Up to 36059 conditions per place. [2023-08-29 09:34:18,095 INFO L137 encePairwiseOnDemand]: 295/308 looper letters, 80 selfloop transitions, 23 changer transitions 0/153 dead transitions. [2023-08-29 09:34:18,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 153 transitions, 763 flow [2023-08-29 09:34:18,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:34:18,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:34:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-29 09:34:18,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5281385281385281 [2023-08-29 09:34:18,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-29 09:34:18,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-29 09:34:18,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:34:18,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-29 09:34:18,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:18,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:18,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:18,101 INFO L175 Difference]: Start difference. First operand has 99 places, 116 transitions, 418 flow. Second operand 3 states and 488 transitions. [2023-08-29 09:34:18,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 153 transitions, 763 flow [2023-08-29 09:34:18,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 153 transitions, 691 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 09:34:18,145 INFO L231 Difference]: Finished difference. Result has 101 places, 137 transitions, 584 flow [2023-08-29 09:34:18,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=584, PETRI_PLACES=101, PETRI_TRANSITIONS=137} [2023-08-29 09:34:18,147 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -16 predicate places. [2023-08-29 09:34:18,148 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 137 transitions, 584 flow [2023-08-29 09:34:18,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:18,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:34:18,152 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 09:34:18,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 09:34:18,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-08-29 09:34:18,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:34:18,153 INFO L85 PathProgramCache]: Analyzing trace with hash 867167443, now seen corresponding path program 1 times [2023-08-29 09:34:18,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:34:18,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367396999] [2023-08-29 09:34:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:34:18,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:34:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:34:18,173 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:34:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:34:18,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:34:18,180 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:34:18,181 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2023-08-29 09:34:18,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (63 of 65 remaining) [2023-08-29 09:34:18,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (62 of 65 remaining) [2023-08-29 09:34:18,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (61 of 65 remaining) [2023-08-29 09:34:18,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (60 of 65 remaining) [2023-08-29 09:34:18,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (59 of 65 remaining) [2023-08-29 09:34:18,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (58 of 65 remaining) [2023-08-29 09:34:18,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (57 of 65 remaining) [2023-08-29 09:34:18,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (56 of 65 remaining) [2023-08-29 09:34:18,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (55 of 65 remaining) [2023-08-29 09:34:18,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (54 of 65 remaining) [2023-08-29 09:34:18,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (53 of 65 remaining) [2023-08-29 09:34:18,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (52 of 65 remaining) [2023-08-29 09:34:18,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (51 of 65 remaining) [2023-08-29 09:34:18,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (50 of 65 remaining) [2023-08-29 09:34:18,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (49 of 65 remaining) [2023-08-29 09:34:18,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (48 of 65 remaining) [2023-08-29 09:34:18,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 65 remaining) [2023-08-29 09:34:18,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 65 remaining) [2023-08-29 09:34:18,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 65 remaining) [2023-08-29 09:34:18,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (44 of 65 remaining) [2023-08-29 09:34:18,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (43 of 65 remaining) [2023-08-29 09:34:18,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (42 of 65 remaining) [2023-08-29 09:34:18,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (41 of 65 remaining) [2023-08-29 09:34:18,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (40 of 65 remaining) [2023-08-29 09:34:18,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (39 of 65 remaining) [2023-08-29 09:34:18,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (38 of 65 remaining) [2023-08-29 09:34:18,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (37 of 65 remaining) [2023-08-29 09:34:18,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (36 of 65 remaining) [2023-08-29 09:34:18,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (35 of 65 remaining) [2023-08-29 09:34:18,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (34 of 65 remaining) [2023-08-29 09:34:18,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (33 of 65 remaining) [2023-08-29 09:34:18,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (32 of 65 remaining) [2023-08-29 09:34:18,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (31 of 65 remaining) [2023-08-29 09:34:18,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (30 of 65 remaining) [2023-08-29 09:34:18,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (29 of 65 remaining) [2023-08-29 09:34:18,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (28 of 65 remaining) [2023-08-29 09:34:18,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (27 of 65 remaining) [2023-08-29 09:34:18,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (26 of 65 remaining) [2023-08-29 09:34:18,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (25 of 65 remaining) [2023-08-29 09:34:18,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (24 of 65 remaining) [2023-08-29 09:34:18,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (23 of 65 remaining) [2023-08-29 09:34:18,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (22 of 65 remaining) [2023-08-29 09:34:18,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (21 of 65 remaining) [2023-08-29 09:34:18,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (20 of 65 remaining) [2023-08-29 09:34:18,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (19 of 65 remaining) [2023-08-29 09:34:18,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (18 of 65 remaining) [2023-08-29 09:34:18,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (17 of 65 remaining) [2023-08-29 09:34:18,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (16 of 65 remaining) [2023-08-29 09:34:18,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (15 of 65 remaining) [2023-08-29 09:34:18,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (14 of 65 remaining) [2023-08-29 09:34:18,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (13 of 65 remaining) [2023-08-29 09:34:18,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (12 of 65 remaining) [2023-08-29 09:34:18,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (11 of 65 remaining) [2023-08-29 09:34:18,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (10 of 65 remaining) [2023-08-29 09:34:18,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 65 remaining) [2023-08-29 09:34:18,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 65 remaining) [2023-08-29 09:34:18,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 65 remaining) [2023-08-29 09:34:18,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 65 remaining) [2023-08-29 09:34:18,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 65 remaining) [2023-08-29 09:34:18,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 65 remaining) [2023-08-29 09:34:18,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 65 remaining) [2023-08-29 09:34:18,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 65 remaining) [2023-08-29 09:34:18,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 65 remaining) [2023-08-29 09:34:18,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 65 remaining) [2023-08-29 09:34:18,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 09:34:18,191 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 09:34:18,192 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:34:18,192 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 09:34:18,254 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:34:18,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 298 transitions, 638 flow [2023-08-29 09:34:18,292 INFO L130 PetriNetUnfolder]: 10/291 cut-off events. [2023-08-29 09:34:18,293 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 09:34:18,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 291 events. 10/291 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 792 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 305. Up to 8 conditions per place. [2023-08-29 09:34:18,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 299 places, 298 transitions, 638 flow [2023-08-29 09:34:18,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 257 transitions, 538 flow [2023-08-29 09:34:18,298 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:34:18,298 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 257 transitions, 538 flow [2023-08-29 09:34:18,298 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 257 transitions, 538 flow [2023-08-29 09:34:18,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 257 transitions, 538 flow [2023-08-29 09:34:18,515 INFO L130 PetriNetUnfolder]: 10/291 cut-off events. [2023-08-29 09:34:18,515 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 09:34:18,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 291 events. 10/291 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 792 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 284. Up to 8 conditions per place. [2023-08-29 09:34:18,533 INFO L119 LiptonReduction]: Number of co-enabled transitions 40884 [2023-08-29 09:34:21,869 INFO L134 LiptonReduction]: Checked pairs total: 195196 [2023-08-29 09:34:21,869 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-29 09:34:21,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:34:21,871 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;@5b781fc8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:34:21,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2023-08-29 09:34:21,872 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:34:21,872 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:34:21,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:34:21,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:34:21,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-08-29 09:34:21,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:34:21,882 INFO L85 PathProgramCache]: Analyzing trace with hash 52775420, now seen corresponding path program 1 times [2023-08-29 09:34:21,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:34:21,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454886937] [2023-08-29 09:34:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:34:21,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:34:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:34:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:34:21,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:34:21,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454886937] [2023-08-29 09:34:21,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454886937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:34:21,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:34:21,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:34:21,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232289102] [2023-08-29 09:34:21,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:34:21,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:34:21,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:34:21,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:34:21,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:34:21,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 438 [2023-08-29 09:34:21,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 158 transitions, 340 flow. Second operand has 2 states, 2 states have (on average 225.5) internal successors, (451), 2 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:21,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:34:21,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 438 [2023-08-29 09:34:21,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:34:34,800 INFO L130 PetriNetUnfolder]: 93852/166682 cut-off events. [2023-08-29 09:34:34,800 INFO L131 PetriNetUnfolder]: For 5827/5827 co-relation queries the response was YES. [2023-08-29 09:34:35,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291762 conditions, 166682 events. 93852/166682 cut-off events. For 5827/5827 co-relation queries the response was YES. Maximal size of possible extension queue 3224. Compared 1710141 event pairs, 81661 based on Foata normal form. 0/150440 useless extension candidates. Maximal degree in co-relation 291750. Up to 120985 conditions per place. [2023-08-29 09:34:35,778 INFO L137 encePairwiseOnDemand]: 408/438 looper letters, 54 selfloop transitions, 0 changer transitions 0/128 dead transitions. [2023-08-29 09:34:35,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 388 flow [2023-08-29 09:34:35,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:34:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:34:35,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 532 transitions. [2023-08-29 09:34:35,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6073059360730594 [2023-08-29 09:34:35,779 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 532 transitions. [2023-08-29 09:34:35,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 532 transitions. [2023-08-29 09:34:35,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:34:35,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 532 transitions. [2023-08-29 09:34:35,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 266.0) internal successors, (532), 2 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:35,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:35,783 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:35,783 INFO L175 Difference]: Start difference. First operand has 164 places, 158 transitions, 340 flow. Second operand 2 states and 532 transitions. [2023-08-29 09:34:35,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 388 flow [2023-08-29 09:34:35,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 381 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-29 09:34:35,788 INFO L231 Difference]: Finished difference. Result has 134 places, 128 transitions, 273 flow [2023-08-29 09:34:35,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=273, PETRI_PLACES=134, PETRI_TRANSITIONS=128} [2023-08-29 09:34:35,788 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, -30 predicate places. [2023-08-29 09:34:35,789 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 128 transitions, 273 flow [2023-08-29 09:34:35,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 225.5) internal successors, (451), 2 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:35,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:34:35,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 09:34:35,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 09:34:35,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-08-29 09:34:35,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:34:35,790 INFO L85 PathProgramCache]: Analyzing trace with hash -822378624, now seen corresponding path program 1 times [2023-08-29 09:34:35,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:34:35,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949086770] [2023-08-29 09:34:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:34:35,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:34:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:34:35,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:34:35,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:34:35,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949086770] [2023-08-29 09:34:35,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949086770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:34:35,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:34:35,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:34:35,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491301433] [2023-08-29 09:34:35,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:34:35,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:34:35,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:34:35,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:34:35,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:34:35,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 438 [2023-08-29 09:34:35,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 128 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:35,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:34:35,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 438 [2023-08-29 09:34:35,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand