./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 AFTER --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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-28 18:03:00,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-28 18:03:00,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-28 18:03:00,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-28 18:03:00,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-28 18:03:00,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-28 18:03:00,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-28 18:03:00,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-28 18:03:00,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-28 18:03:00,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-28 18:03:00,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-28 18:03:00,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-28 18:03:00,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-28 18:03:00,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-28 18:03:00,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-28 18:03:00,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-28 18:03:00,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-28 18:03:00,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-28 18:03:00,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-28 18:03:00,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-28 18:03:00,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-28 18:03:00,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-28 18:03:00,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-28 18:03:00,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-28 18:03:00,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-28 18:03:00,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-28 18:03:00,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-28 18:03:00,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-28 18:03:00,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-28 18:03:00,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-28 18:03:00,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-28 18:03:00,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-28 18:03:00,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-28 18:03:00,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-28 18:03:00,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-28 18:03:00,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-28 18:03:00,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-28 18:03:00,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-28 18:03:00,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-28 18:03:00,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-28 18:03:00,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-28 18:03:00,972 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-28 18:03:01,005 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-28 18:03:01,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-28 18:03:01,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-28 18:03:01,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-28 18:03:01,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-28 18:03:01,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-28 18:03:01,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-28 18:03:01,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-28 18:03:01,009 INFO L138 SettingsManager]: * Use SBE=true [2023-08-28 18:03:01,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-28 18:03:01,010 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-28 18:03:01,011 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-28 18:03:01,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-28 18:03:01,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-28 18:03:01,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-28 18:03:01,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-28 18:03:01,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-28 18:03:01,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-28 18:03:01,012 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-28 18:03:01,012 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-28 18:03:01,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-28 18:03:01,013 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-28 18:03:01,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-28 18:03:01,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-28 18:03:01,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-28 18:03:01,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-28 18:03:01,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 18:03:01,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-28 18:03:01,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-28 18:03:01,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-28 18:03:01,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-28 18:03:01,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-28 18:03:01,016 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-28 18:03:01,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-28 18:03:01,016 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-28 18:03:01,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-28 18:03:01,016 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-28 18:03:01,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-28 18:03:01,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-28 18:03:01,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-28 18:03:01,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-28 18:03:01,375 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-28 18:03:01,375 INFO L275 PluginConnector]: CDTParser initialized [2023-08-28 18:03:01,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-28 18:03:02,625 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-28 18:03:02,910 INFO L351 CDTParser]: Found 1 translation units. [2023-08-28 18:03:02,910 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-28 18:03:02,920 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a949d3b07/bb41ae03bf044be39a2791e9d9eacab4/FLAGb5ff87943 [2023-08-28 18:03:02,936 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a949d3b07/bb41ae03bf044be39a2791e9d9eacab4 [2023-08-28 18:03:02,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-28 18:03:02,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-28 18:03:02,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-28 18:03:02,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-28 18:03:02,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-28 18:03:02,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:03:02" (1/1) ... [2023-08-28 18:03:02,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b575a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:02, skipping insertion in model container [2023-08-28 18:03:02,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:03:02" (1/1) ... [2023-08-28 18:03:02,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-28 18:03:02,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-28 18:03:03,362 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] [2023-08-28 18:03:03,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 18:03:03,381 INFO L203 MainTranslator]: Completed pre-run [2023-08-28 18:03:03,424 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] [2023-08-28 18:03:03,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 18:03:03,467 INFO L208 MainTranslator]: Completed translation [2023-08-28 18:03:03,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:03 WrapperNode [2023-08-28 18:03:03,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-28 18:03:03,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-28 18:03:03,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-28 18:03:03,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-28 18:03:03,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:03" (1/1) ... [2023-08-28 18:03:03,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:03" (1/1) ... [2023-08-28 18:03:03,535 INFO L138 Inliner]: procedures = 172, calls = 27, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 224 [2023-08-28 18:03:03,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-28 18:03:03,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-28 18:03:03,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-28 18:03:03,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-28 18:03:03,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:03" (1/1) ... [2023-08-28 18:03:03,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:03" (1/1) ... [2023-08-28 18:03:03,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:03" (1/1) ... [2023-08-28 18:03:03,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:03" (1/1) ... [2023-08-28 18:03:03,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:03" (1/1) ... [2023-08-28 18:03:03,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:03" (1/1) ... [2023-08-28 18:03:03,577 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:03" (1/1) ... [2023-08-28 18:03:03,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:03" (1/1) ... [2023-08-28 18:03:03,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-28 18:03:03,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-28 18:03:03,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-28 18:03:03,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-28 18:03:03,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:03" (1/1) ... [2023-08-28 18:03:03,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 18:03:03,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 18:03:03,622 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) [2023-08-28 18:03:03,636 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 [2023-08-28 18:03:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-28 18:03:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-28 18:03:03,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-28 18:03:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-28 18:03:03,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-28 18:03:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-28 18:03:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-28 18:03:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-28 18:03:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-28 18:03:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-28 18:03:03,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-28 18:03:03,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-28 18:03:03,663 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-28 18:03:03,813 INFO L236 CfgBuilder]: Building ICFG [2023-08-28 18:03:03,815 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-28 18:03:04,203 INFO L277 CfgBuilder]: Performing block encoding [2023-08-28 18:03:04,433 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-28 18:03:04,433 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-28 18:03:04,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:03:04 BoogieIcfgContainer [2023-08-28 18:03:04,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-28 18:03:04,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-28 18:03:04,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-28 18:03:04,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-28 18:03:04,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 06:03:02" (1/3) ... [2023-08-28 18:03:04,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bb399a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:03:04, skipping insertion in model container [2023-08-28 18:03:04,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:03:03" (2/3) ... [2023-08-28 18:03:04,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bb399a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:03:04, skipping insertion in model container [2023-08-28 18:03:04,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:03:04" (3/3) ... [2023-08-28 18:03:04,444 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2023-08-28 18:03:04,451 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-28 18:03:04,472 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-28 18:03:04,472 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2023-08-28 18:03:04,472 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-28 18:03:04,563 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:03:04,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 122 transitions, 254 flow [2023-08-28 18:03:04,668 INFO L130 PetriNetUnfolder]: 6/131 cut-off events. [2023-08-28 18:03:04,669 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:03:04,675 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. [2023-08-28 18:03:04,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 122 transitions, 254 flow [2023-08-28 18:03:04,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 121 transitions, 250 flow [2023-08-28 18:03:04,685 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:03:04,696 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 121 transitions, 250 flow [2023-08-28 18:03:04,702 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 121 transitions, 250 flow [2023-08-28 18:03:04,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 121 transitions, 250 flow [2023-08-28 18:03:04,756 INFO L130 PetriNetUnfolder]: 6/131 cut-off events. [2023-08-28 18:03:04,757 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:03:04,760 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. [2023-08-28 18:03:04,762 INFO L119 LiptonReduction]: Number of co-enabled transitions 4896 [2023-08-28 18:03:07,266 INFO L134 LiptonReduction]: Checked pairs total: 14996 [2023-08-28 18:03:07,266 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-28 18:03:07,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:03:07,293 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;@40e77171, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:03:07,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-08-28 18:03:07,296 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2023-08-28 18:03:07,296 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:03:07,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:07,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:03:07,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2023-08-28 18:03:07,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:07,302 INFO L85 PathProgramCache]: Analyzing trace with hash 24458726, now seen corresponding path program 1 times [2023-08-28 18:03:07,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:07,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79788509] [2023-08-28 18:03:07,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:07,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:07,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:07,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79788509] [2023-08-28 18:03:07,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79788509] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:07,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:07,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:03:07,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059073221] [2023-08-28 18:03:07,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:07,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:03:07,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:07,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:03:07,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:03:07,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 198 [2023-08-28 18:03:07,523 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) [2023-08-28 18:03:07,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:07,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 198 [2023-08-28 18:03:07,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:07,790 INFO L130 PetriNetUnfolder]: 372/778 cut-off events. [2023-08-28 18:03:07,790 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-28 18:03:07,793 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. [2023-08-28 18:03:07,797 INFO L137 encePairwiseOnDemand]: 184/198 looper letters, 27 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2023-08-28 18:03:07,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 156 flow [2023-08-28 18:03:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:03:07,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:03:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 233 transitions. [2023-08-28 18:03:07,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5883838383838383 [2023-08-28 18:03:07,828 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 233 transitions. [2023-08-28 18:03:07,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 233 transitions. [2023-08-28 18:03:07,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:07,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 233 transitions. [2023-08-28 18:03:07,844 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) [2023-08-28 18:03:07,850 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) [2023-08-28 18:03:07,851 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) [2023-08-28 18:03:07,853 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 130 flow. Second operand 2 states and 233 transitions. [2023-08-28 18:03:07,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 156 flow [2023-08-28 18:03:07,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 155 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 18:03:07,857 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 101 flow [2023-08-28 18:03:07,859 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} [2023-08-28 18:03:07,862 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -14 predicate places. [2023-08-28 18:03:07,862 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 101 flow [2023-08-28 18:03:07,863 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) [2023-08-28 18:03:07,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:07,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-28 18:03:07,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-28 18:03:07,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2023-08-28 18:03:07,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:07,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2030022794, now seen corresponding path program 1 times [2023-08-28 18:03:07,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:07,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77381672] [2023-08-28 18:03:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:07,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:07,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:07,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77381672] [2023-08-28 18:03:07,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77381672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:07,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:07,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:07,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6183713] [2023-08-28 18:03:07,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:07,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:07,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:07,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:07,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:07,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-08-28 18:03:07,999 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) [2023-08-28 18:03:07,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:07,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-08-28 18:03:07,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:08,272 INFO L130 PetriNetUnfolder]: 1083/1861 cut-off events. [2023-08-28 18:03:08,273 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-28 18:03:08,275 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. [2023-08-28 18:03:08,282 INFO L137 encePairwiseOnDemand]: 183/198 looper letters, 44 selfloop transitions, 10 changer transitions 4/65 dead transitions. [2023-08-28 18:03:08,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 256 flow [2023-08-28 18:03:08,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:08,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:08,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-28 18:03:08,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2023-08-28 18:03:08,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-28 18:03:08,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-28 18:03:08,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:08,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-28 18:03:08,293 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) [2023-08-28 18:03:08,295 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) [2023-08-28 18:03:08,296 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) [2023-08-28 18:03:08,296 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 101 flow. Second operand 3 states and 294 transitions. [2023-08-28 18:03:08,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 256 flow [2023-08-28 18:03:08,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 18:03:08,298 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 157 flow [2023-08-28 18:03:08,298 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=157, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-08-28 18:03:08,299 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -14 predicate places. [2023-08-28 18:03:08,299 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 157 flow [2023-08-28 18:03:08,299 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) [2023-08-28 18:03:08,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:08,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:08,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-28 18:03:08,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2023-08-28 18:03:08,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:08,303 INFO L85 PathProgramCache]: Analyzing trace with hash -95001711, now seen corresponding path program 1 times [2023-08-28 18:03:08,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:08,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029851302] [2023-08-28 18:03:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:08,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:08,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:08,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029851302] [2023-08-28 18:03:08,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029851302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:08,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:08,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:08,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8555842] [2023-08-28 18:03:08,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:08,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:08,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:08,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:08,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:08,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 198 [2023-08-28 18:03:08,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2023-08-28 18:03:08,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:08,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 198 [2023-08-28 18:03:08,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:08,612 INFO L130 PetriNetUnfolder]: 914/1638 cut-off events. [2023-08-28 18:03:08,612 INFO L131 PetriNetUnfolder]: For 354/362 co-relation queries the response was YES. [2023-08-28 18:03:08,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3748 conditions, 1638 events. 914/1638 cut-off events. For 354/362 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 7528 event pairs, 624 based on Foata normal form. 0/1591 useless extension candidates. Maximal degree in co-relation 3742. Up to 1340 conditions per place. [2023-08-28 18:03:08,625 INFO L137 encePairwiseOnDemand]: 193/198 looper letters, 40 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-08-28 18:03:08,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 275 flow [2023-08-28 18:03:08,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-08-28 18:03:08,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831649831649832 [2023-08-28 18:03:08,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-08-28 18:03:08,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-08-28 18:03:08,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:08,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-08-28 18:03:08,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2023-08-28 18:03:08,631 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) [2023-08-28 18:03:08,631 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) [2023-08-28 18:03:08,632 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 157 flow. Second operand 3 states and 287 transitions. [2023-08-28 18:03:08,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 275 flow [2023-08-28 18:03:08,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 253 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:03:08,639 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 185 flow [2023-08-28 18:03:08,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2023-08-28 18:03:08,642 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -12 predicate places. [2023-08-28 18:03:08,644 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 185 flow [2023-08-28 18:03:08,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2023-08-28 18:03:08,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:08,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:08,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-28 18:03:08,646 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2023-08-28 18:03:08,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:08,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1640832654, now seen corresponding path program 1 times [2023-08-28 18:03:08,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:08,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394541489] [2023-08-28 18:03:08,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:08,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:09,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:09,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394541489] [2023-08-28 18:03:09,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394541489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:09,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:09,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-28 18:03:09,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347216746] [2023-08-28 18:03:09,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:09,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-28 18:03:09,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:09,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-28 18:03:09,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-28 18:03:09,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 198 [2023-08-28 18:03:09,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2023-08-28 18:03:09,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:09,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 198 [2023-08-28 18:03:09,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:09,176 INFO L130 PetriNetUnfolder]: 127/374 cut-off events. [2023-08-28 18:03:09,176 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-08-28 18:03:09,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 374 events. 127/374 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1359 event pairs, 17 based on Foata normal form. 111/484 useless extension candidates. Maximal degree in co-relation 801. Up to 224 conditions per place. [2023-08-28 18:03:09,178 INFO L137 encePairwiseOnDemand]: 191/198 looper letters, 22 selfloop transitions, 6 changer transitions 2/47 dead transitions. [2023-08-28 18:03:09,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 204 flow [2023-08-28 18:03:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-28 18:03:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-28 18:03:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 389 transitions. [2023-08-28 18:03:09,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4911616161616162 [2023-08-28 18:03:09,182 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 389 transitions. [2023-08-28 18:03:09,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 389 transitions. [2023-08-28 18:03:09,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:09,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 389 transitions. [2023-08-28 18:03:09,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 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) [2023-08-28 18:03:09,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 198.0) internal successors, (990), 5 states have internal predecessors, (990), 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) [2023-08-28 18:03:09,190 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 198.0) internal successors, (990), 5 states have internal predecessors, (990), 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) [2023-08-28 18:03:09,190 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 185 flow. Second operand 4 states and 389 transitions. [2023-08-28 18:03:09,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 204 flow [2023-08-28 18:03:09,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 188 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-28 18:03:09,193 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 125 flow [2023-08-28 18:03:09,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-28 18:03:09,195 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -15 predicate places. [2023-08-28 18:03:09,195 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 125 flow [2023-08-28 18:03:09,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2023-08-28 18:03:09,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:09,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:09,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-28 18:03:09,196 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err5ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2023-08-28 18:03:09,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:09,196 INFO L85 PathProgramCache]: Analyzing trace with hash -567553894, now seen corresponding path program 1 times [2023-08-28 18:03:09,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:09,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221114809] [2023-08-28 18:03:09,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:09,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:09,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:09,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221114809] [2023-08-28 18:03:09,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221114809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:09,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:09,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:09,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308240011] [2023-08-28 18:03:09,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:09,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:09,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:09,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:09,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:09,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 198 [2023-08-28 18:03:09,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2023-08-28 18:03:09,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:09,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 198 [2023-08-28 18:03:09,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:09,331 INFO L130 PetriNetUnfolder]: 128/339 cut-off events. [2023-08-28 18:03:09,331 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-28 18:03:09,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 339 events. 128/339 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1145 event pairs, 105 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 775. Up to 278 conditions per place. [2023-08-28 18:03:09,333 INFO L137 encePairwiseOnDemand]: 195/198 looper letters, 32 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-28 18:03:09,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 195 flow [2023-08-28 18:03:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-28 18:03:09,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468013468013468 [2023-08-28 18:03:09,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-28 18:03:09,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-28 18:03:09,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:09,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-28 18:03:09,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2023-08-28 18:03:09,337 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) [2023-08-28 18:03:09,338 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) [2023-08-28 18:03:09,338 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 125 flow. Second operand 3 states and 278 transitions. [2023-08-28 18:03:09,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 195 flow [2023-08-28 18:03:09,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:03:09,339 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 121 flow [2023-08-28 18:03:09,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-08-28 18:03:09,340 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -18 predicate places. [2023-08-28 18:03:09,340 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 121 flow [2023-08-28 18:03:09,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2023-08-28 18:03:09,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:09,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:09,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-28 18:03:09,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err11ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2023-08-28 18:03:09,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:09,342 INFO L85 PathProgramCache]: Analyzing trace with hash -257949103, now seen corresponding path program 1 times [2023-08-28 18:03:09,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:09,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876035588] [2023-08-28 18:03:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:09,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:09,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:09,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876035588] [2023-08-28 18:03:09,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876035588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:09,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:09,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:09,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684936221] [2023-08-28 18:03:09,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:09,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:09,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:09,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:09,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:09,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 198 [2023-08-28 18:03:09,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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) [2023-08-28 18:03:09,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:09,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 198 [2023-08-28 18:03:09,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:09,502 INFO L130 PetriNetUnfolder]: 128/333 cut-off events. [2023-08-28 18:03:09,502 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-28 18:03:09,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 333 events. 128/333 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1105 event pairs, 109 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 745. Up to 288 conditions per place. [2023-08-28 18:03:09,504 INFO L137 encePairwiseOnDemand]: 195/198 looper letters, 32 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-28 18:03:09,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 191 flow [2023-08-28 18:03:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-28 18:03:09,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468013468013468 [2023-08-28 18:03:09,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-28 18:03:09,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-28 18:03:09,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:09,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-28 18:03:09,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2023-08-28 18:03:09,508 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) [2023-08-28 18:03:09,508 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) [2023-08-28 18:03:09,508 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 121 flow. Second operand 3 states and 278 transitions. [2023-08-28 18:03:09,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 191 flow [2023-08-28 18:03:09,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 187 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:03:09,510 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 119 flow [2023-08-28 18:03:09,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-08-28 18:03:09,510 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -19 predicate places. [2023-08-28 18:03:09,510 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 119 flow [2023-08-28 18:03:09,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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) [2023-08-28 18:03:09,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:09,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:09,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-28 18:03:09,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err13ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2023-08-28 18:03:09,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:09,512 INFO L85 PathProgramCache]: Analyzing trace with hash 755422112, now seen corresponding path program 1 times [2023-08-28 18:03:09,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:09,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735901200] [2023-08-28 18:03:09,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:09,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:09,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:09,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735901200] [2023-08-28 18:03:09,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735901200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:09,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:09,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:09,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994428170] [2023-08-28 18:03:09,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:09,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:09,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:09,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:09,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:09,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 198 [2023-08-28 18:03:09,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2023-08-28 18:03:09,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:09,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 198 [2023-08-28 18:03:09,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:09,640 INFO L130 PetriNetUnfolder]: 128/327 cut-off events. [2023-08-28 18:03:09,640 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-08-28 18:03:09,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 327 events. 128/327 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1078 event pairs, 109 based on Foata normal form. 6/331 useless extension candidates. Maximal degree in co-relation 739. Up to 288 conditions per place. [2023-08-28 18:03:09,641 INFO L137 encePairwiseOnDemand]: 196/198 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2023-08-28 18:03:09,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 189 flow [2023-08-28 18:03:09,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:09,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:09,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-28 18:03:09,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468013468013468 [2023-08-28 18:03:09,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-28 18:03:09,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-28 18:03:09,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:09,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-28 18:03:09,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2023-08-28 18:03:09,646 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) [2023-08-28 18:03:09,648 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) [2023-08-28 18:03:09,648 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 119 flow. Second operand 3 states and 278 transitions. [2023-08-28 18:03:09,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 189 flow [2023-08-28 18:03:09,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 185 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:03:09,649 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-08-28 18:03:09,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-08-28 18:03:09,650 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -20 predicate places. [2023-08-28 18:03:09,650 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-08-28 18:03:09,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2023-08-28 18:03:09,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err12ASSERT_VIOLATIONDATA_RACE (41 of 42 remaining) [2023-08-28 18:03:09,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err8ASSERT_VIOLATIONDATA_RACE (40 of 42 remaining) [2023-08-28 18:03:09,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err4ASSERT_VIOLATIONDATA_RACE (39 of 42 remaining) [2023-08-28 18:03:09,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err6ASSERT_VIOLATIONDATA_RACE (38 of 42 remaining) [2023-08-28 18:03:09,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (37 of 42 remaining) [2023-08-28 18:03:09,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err11ASSERT_VIOLATIONDATA_RACE (36 of 42 remaining) [2023-08-28 18:03:09,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err15ASSERT_VIOLATIONDATA_RACE (35 of 42 remaining) [2023-08-28 18:03:09,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err3ASSERT_VIOLATIONDATA_RACE (34 of 42 remaining) [2023-08-28 18:03:09,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err4ASSERT_VIOLATIONDATA_RACE (33 of 42 remaining) [2023-08-28 18:03:09,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 42 remaining) [2023-08-28 18:03:09,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err11ASSERT_VIOLATIONDATA_RACE (31 of 42 remaining) [2023-08-28 18:03:09,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err2ASSERT_VIOLATIONDATA_RACE (30 of 42 remaining) [2023-08-28 18:03:09,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err5ASSERT_VIOLATIONDATA_RACE (29 of 42 remaining) [2023-08-28 18:03:09,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err7ASSERT_VIOLATIONDATA_RACE (28 of 42 remaining) [2023-08-28 18:03:09,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err10ASSERT_VIOLATIONDATA_RACE (27 of 42 remaining) [2023-08-28 18:03:09,656 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 42 remaining) [2023-08-28 18:03:09,656 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err12ASSERT_VIOLATIONDATA_RACE (25 of 42 remaining) [2023-08-28 18:03:09,656 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err15ASSERT_VIOLATIONDATA_RACE (24 of 42 remaining) [2023-08-28 18:03:09,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err6ASSERT_VIOLATIONDATA_RACE (23 of 42 remaining) [2023-08-28 18:03:09,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err14ASSERT_VIOLATIONDATA_RACE (22 of 42 remaining) [2023-08-28 18:03:09,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err7ASSERT_VIOLATIONDATA_RACE (21 of 42 remaining) [2023-08-28 18:03:09,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 42 remaining) [2023-08-28 18:03:09,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err3ASSERT_VIOLATIONDATA_RACE (19 of 42 remaining) [2023-08-28 18:03:09,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 42 remaining) [2023-08-28 18:03:09,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 42 remaining) [2023-08-28 18:03:09,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 42 remaining) [2023-08-28 18:03:09,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err13ASSERT_VIOLATIONDATA_RACE (15 of 42 remaining) [2023-08-28 18:03:09,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err5ASSERT_VIOLATIONDATA_RACE (14 of 42 remaining) [2023-08-28 18:03:09,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err8ASSERT_VIOLATIONDATA_RACE (13 of 42 remaining) [2023-08-28 18:03:09,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err9ASSERT_VIOLATIONDATA_RACE (12 of 42 remaining) [2023-08-28 18:03:09,660 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err14ASSERT_VIOLATIONDATA_RACE (11 of 42 remaining) [2023-08-28 18:03:09,660 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err13ASSERT_VIOLATIONDATA_RACE (10 of 42 remaining) [2023-08-28 18:03:09,660 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err1ASSERT_VIOLATIONDATA_RACE (9 of 42 remaining) [2023-08-28 18:03:09,660 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 42 remaining) [2023-08-28 18:03:09,660 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err1ASSERT_VIOLATIONDATA_RACE (7 of 42 remaining) [2023-08-28 18:03:09,660 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONDATA_RACE (6 of 42 remaining) [2023-08-28 18:03:09,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 42 remaining) [2023-08-28 18:03:09,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 42 remaining) [2023-08-28 18:03:09,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 42 remaining) [2023-08-28 18:03:09,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err2ASSERT_VIOLATIONDATA_RACE (2 of 42 remaining) [2023-08-28 18:03:09,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err10ASSERT_VIOLATIONDATA_RACE (1 of 42 remaining) [2023-08-28 18:03:09,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err9ASSERT_VIOLATIONDATA_RACE (0 of 42 remaining) [2023-08-28 18:03:09,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-28 18:03:09,662 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:09,663 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:03:09,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 122 transitions, 254 flow [2023-08-28 18:03:09,687 INFO L130 PetriNetUnfolder]: 6/131 cut-off events. [2023-08-28 18:03:09,687 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:03:09,688 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. [2023-08-28 18:03:09,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 122 transitions, 254 flow [2023-08-28 18:03:09,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 121 transitions, 250 flow [2023-08-28 18:03:09,689 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:03:09,689 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 121 transitions, 250 flow [2023-08-28 18:03:09,689 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 121 transitions, 250 flow [2023-08-28 18:03:09,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 121 transitions, 250 flow [2023-08-28 18:03:09,701 INFO L130 PetriNetUnfolder]: 6/131 cut-off events. [2023-08-28 18:03:09,702 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:03:09,702 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. [2023-08-28 18:03:09,704 INFO L119 LiptonReduction]: Number of co-enabled transitions 4896 [2023-08-28 18:03:11,778 INFO L134 LiptonReduction]: Checked pairs total: 16952 [2023-08-28 18:03:11,778 INFO L136 LiptonReduction]: Total number of compositions: 74 [2023-08-28 18:03:11,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:03:11,781 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;@40e77171, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:03:11,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-28 18:03:11,784 INFO L130 PetriNetUnfolder]: 1/26 cut-off events. [2023-08-28 18:03:11,784 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:03:11,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:11,784 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:11,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:03:11,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:11,785 INFO L85 PathProgramCache]: Analyzing trace with hash 675114569, now seen corresponding path program 1 times [2023-08-28 18:03:11,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:11,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326279749] [2023-08-28 18:03:11,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:11,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:03:11,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:03:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:03:11,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:03:11,819 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:03:11,819 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-28 18:03:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-28 18:03:11,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-28 18:03:11,820 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:03:11,821 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-28 18:03:11,821 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:03:11,821 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-28 18:03:11,904 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:03:11,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 210 transitions, 444 flow [2023-08-28 18:03:11,932 INFO L130 PetriNetUnfolder]: 8/211 cut-off events. [2023-08-28 18:03:11,932 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:03:11,934 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. [2023-08-28 18:03:11,934 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 210 transitions, 444 flow [2023-08-28 18:03:11,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 189 transitions, 393 flow [2023-08-28 18:03:11,937 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:03:11,937 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 189 transitions, 393 flow [2023-08-28 18:03:11,937 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 189 transitions, 393 flow [2023-08-28 18:03:11,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 189 transitions, 393 flow [2023-08-28 18:03:11,960 INFO L130 PetriNetUnfolder]: 8/211 cut-off events. [2023-08-28 18:03:11,961 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:03:11,963 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. [2023-08-28 18:03:11,970 INFO L119 LiptonReduction]: Number of co-enabled transitions 18334 [2023-08-28 18:03:14,603 INFO L134 LiptonReduction]: Checked pairs total: 94927 [2023-08-28 18:03:14,603 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-28 18:03:14,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:03:14,605 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;@40e77171, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:03:14,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-08-28 18:03:14,606 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2023-08-28 18:03:14,607 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:03:14,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:14,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:03:14,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE (and 59 more)] === [2023-08-28 18:03:14,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:14,608 INFO L85 PathProgramCache]: Analyzing trace with hash 38903753, now seen corresponding path program 1 times [2023-08-28 18:03:14,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:14,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155890547] [2023-08-28 18:03:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:14,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:14,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:14,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155890547] [2023-08-28 18:03:14,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155890547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:14,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:14,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:03:14,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720773401] [2023-08-28 18:03:14,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:14,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:03:14,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:14,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:03:14,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:03:14,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 308 [2023-08-28 18:03:14,620 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) [2023-08-28 18:03:14,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:14,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 308 [2023-08-28 18:03:14,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:15,680 INFO L130 PetriNetUnfolder]: 4452/9234 cut-off events. [2023-08-28 18:03:15,680 INFO L131 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2023-08-28 18:03:15,700 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 73975 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. [2023-08-28 18:03:15,752 INFO L137 encePairwiseOnDemand]: 286/308 looper letters, 38 selfloop transitions, 0 changer transitions 0/90 dead transitions. [2023-08-28 18:03:15,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 271 flow [2023-08-28 18:03:15,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:03:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:03:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 380 transitions. [2023-08-28 18:03:15,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168831168831169 [2023-08-28 18:03:15,754 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 380 transitions. [2023-08-28 18:03:15,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 380 transitions. [2023-08-28 18:03:15,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:15,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 380 transitions. [2023-08-28 18:03:15,756 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) [2023-08-28 18:03:15,757 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) [2023-08-28 18:03:15,757 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) [2023-08-28 18:03:15,757 INFO L175 Difference]: Start difference. First operand has 117 places, 112 transitions, 239 flow. Second operand 2 states and 380 transitions. [2023-08-28 18:03:15,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 271 flow [2023-08-28 18:03:15,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 268 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-28 18:03:15,761 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 192 flow [2023-08-28 18:03:15,761 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} [2023-08-28 18:03:15,764 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -22 predicate places. [2023-08-28 18:03:15,764 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 192 flow [2023-08-28 18:03:15,764 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) [2023-08-28 18:03:15,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:15,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-28 18:03:15,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-28 18:03:15,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE (and 59 more)] === [2023-08-28 18:03:15,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1268162740, now seen corresponding path program 1 times [2023-08-28 18:03:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:15,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599268752] [2023-08-28 18:03:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:15,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:15,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599268752] [2023-08-28 18:03:15,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599268752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:15,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:15,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:15,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466824843] [2023-08-28 18:03:15,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:15,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:15,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:15,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:15,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:15,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 308 [2023-08-28 18:03:15,833 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) [2023-08-28 18:03:15,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:15,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 308 [2023-08-28 18:03:15,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:20,109 INFO L130 PetriNetUnfolder]: 35440/56349 cut-off events. [2023-08-28 18:03:20,110 INFO L131 PetriNetUnfolder]: For 640/640 co-relation queries the response was YES. [2023-08-28 18:03:20,231 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 450171 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. [2023-08-28 18:03:20,633 INFO L137 encePairwiseOnDemand]: 273/308 looper letters, 95 selfloop transitions, 26 changer transitions 0/145 dead transitions. [2023-08-28 18:03:20,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 145 transitions, 552 flow [2023-08-28 18:03:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-28 18:03:20,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367965367965368 [2023-08-28 18:03:20,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-28 18:03:20,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-28 18:03:20,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:20,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-28 18:03:20,637 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) [2023-08-28 18:03:20,639 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) [2023-08-28 18:03:20,639 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) [2023-08-28 18:03:20,639 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 192 flow. Second operand 3 states and 496 transitions. [2023-08-28 18:03:20,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 145 transitions, 552 flow [2023-08-28 18:03:20,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 145 transitions, 552 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 18:03:20,644 INFO L231 Difference]: Finished difference. Result has 99 places, 116 transitions, 418 flow [2023-08-28 18:03:20,644 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} [2023-08-28 18:03:20,645 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -18 predicate places. [2023-08-28 18:03:20,645 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 116 transitions, 418 flow [2023-08-28 18:03:20,645 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) [2023-08-28 18:03:20,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:20,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:20,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-28 18:03:20,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE (and 59 more)] === [2023-08-28 18:03:20,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:20,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2005515541, now seen corresponding path program 1 times [2023-08-28 18:03:20,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:20,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043518525] [2023-08-28 18:03:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:20,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:20,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:20,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043518525] [2023-08-28 18:03:20,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043518525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:20,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:20,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:20,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615475626] [2023-08-28 18:03:20,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:20,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:20,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:20,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:20,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:20,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 308 [2023-08-28 18:03:20,737 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) [2023-08-28 18:03:20,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:20,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 308 [2023-08-28 18:03:20,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:24,526 INFO L130 PetriNetUnfolder]: 28872/48883 cut-off events. [2023-08-28 18:03:24,526 INFO L131 PetriNetUnfolder]: For 18553/19185 co-relation queries the response was YES. [2023-08-28 18:03:24,642 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 412793 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. [2023-08-28 18:03:24,860 INFO L137 encePairwiseOnDemand]: 295/308 looper letters, 80 selfloop transitions, 23 changer transitions 0/153 dead transitions. [2023-08-28 18:03:24,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 153 transitions, 763 flow [2023-08-28 18:03:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:24,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-28 18:03:24,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5281385281385281 [2023-08-28 18:03:24,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-28 18:03:24,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-28 18:03:24,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:24,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-28 18:03:24,866 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) [2023-08-28 18:03:24,871 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) [2023-08-28 18:03:24,871 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) [2023-08-28 18:03:24,872 INFO L175 Difference]: Start difference. First operand has 99 places, 116 transitions, 418 flow. Second operand 3 states and 488 transitions. [2023-08-28 18:03:24,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 153 transitions, 763 flow [2023-08-28 18:03:24,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 153 transitions, 691 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:03:24,922 INFO L231 Difference]: Finished difference. Result has 101 places, 137 transitions, 584 flow [2023-08-28 18:03:24,922 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} [2023-08-28 18:03:24,923 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -16 predicate places. [2023-08-28 18:03:24,923 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 137 transitions, 584 flow [2023-08-28 18:03:24,923 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) [2023-08-28 18:03:24,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:24,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:24,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-28 18:03:24,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE (and 59 more)] === [2023-08-28 18:03:24,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash 622458466, now seen corresponding path program 1 times [2023-08-28 18:03:24,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:24,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816160402] [2023-08-28 18:03:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:24,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:25,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:25,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816160402] [2023-08-28 18:03:25,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816160402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:25,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:25,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-28 18:03:25,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918811933] [2023-08-28 18:03:25,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:25,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-28 18:03:25,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:25,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-28 18:03:25,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-28 18:03:25,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 308 [2023-08-28 18:03:25,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 137 transitions, 584 flow. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 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) [2023-08-28 18:03:25,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:25,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 308 [2023-08-28 18:03:25,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:25,352 INFO L130 PetriNetUnfolder]: 553/1635 cut-off events. [2023-08-28 18:03:25,353 INFO L131 PetriNetUnfolder]: For 429/429 co-relation queries the response was YES. [2023-08-28 18:03:25,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3473 conditions, 1635 events. 553/1635 cut-off events. For 429/429 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 10938 event pairs, 72 based on Foata normal form. 488/2059 useless extension candidates. Maximal degree in co-relation 3465. Up to 837 conditions per place. [2023-08-28 18:03:25,361 INFO L137 encePairwiseOnDemand]: 297/308 looper letters, 33 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2023-08-28 18:03:25,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 91 transitions, 386 flow [2023-08-28 18:03:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-28 18:03:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-28 18:03:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 661 transitions. [2023-08-28 18:03:25,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536525974025974 [2023-08-28 18:03:25,364 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 661 transitions. [2023-08-28 18:03:25,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 661 transitions. [2023-08-28 18:03:25,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:25,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 661 transitions. [2023-08-28 18:03:25,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 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) [2023-08-28 18:03:25,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 308.0) internal successors, (1540), 5 states have internal predecessors, (1540), 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) [2023-08-28 18:03:25,368 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 308.0) internal successors, (1540), 5 states have internal predecessors, (1540), 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) [2023-08-28 18:03:25,369 INFO L175 Difference]: Start difference. First operand has 101 places, 137 transitions, 584 flow. Second operand 4 states and 661 transitions. [2023-08-28 18:03:25,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 91 transitions, 386 flow [2023-08-28 18:03:25,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 334 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-08-28 18:03:25,374 INFO L231 Difference]: Finished difference. Result has 90 places, 85 transitions, 248 flow [2023-08-28 18:03:25,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=90, PETRI_TRANSITIONS=85} [2023-08-28 18:03:25,375 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -27 predicate places. [2023-08-28 18:03:25,375 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 248 flow [2023-08-28 18:03:25,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 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) [2023-08-28 18:03:25,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:25,376 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:25,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-28 18:03:25,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE (and 59 more)] === [2023-08-28 18:03:25,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:25,376 INFO L85 PathProgramCache]: Analyzing trace with hash -337034926, now seen corresponding path program 1 times [2023-08-28 18:03:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:25,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886629863] [2023-08-28 18:03:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:03:25,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:25,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886629863] [2023-08-28 18:03:25,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886629863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:25,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:25,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:25,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61098180] [2023-08-28 18:03:25,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:25,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:25,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:25,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:25,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:25,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 308 [2023-08-28 18:03:25,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 248 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) [2023-08-28 18:03:25,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:25,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 308 [2023-08-28 18:03:25,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:25,634 INFO L130 PetriNetUnfolder]: 691/1772 cut-off events. [2023-08-28 18:03:25,634 INFO L131 PetriNetUnfolder]: For 293/293 co-relation queries the response was YES. [2023-08-28 18:03:25,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3848 conditions, 1772 events. 691/1772 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11595 event pairs, 580 based on Foata normal form. 0/1740 useless extension candidates. Maximal degree in co-relation 3841. Up to 1301 conditions per place. [2023-08-28 18:03:25,641 INFO L137 encePairwiseOnDemand]: 305/308 looper letters, 53 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-28 18:03:25,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 360 flow [2023-08-28 18:03:25,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-08-28 18:03:25,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-28 18:03:25,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-08-28 18:03:25,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-08-28 18:03:25,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:25,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-08-28 18:03:25,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2023-08-28 18:03:25,647 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) [2023-08-28 18:03:25,647 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) [2023-08-28 18:03:25,647 INFO L175 Difference]: Start difference. First operand has 90 places, 85 transitions, 248 flow. Second operand 3 states and 462 transitions. [2023-08-28 18:03:25,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 360 flow [2023-08-28 18:03:25,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 349 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:03:25,650 INFO L231 Difference]: Finished difference. Result has 89 places, 84 transitions, 239 flow [2023-08-28 18:03:25,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=89, PETRI_TRANSITIONS=84} [2023-08-28 18:03:25,651 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -28 predicate places. [2023-08-28 18:03:25,651 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 84 transitions, 239 flow [2023-08-28 18:03:25,651 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) [2023-08-28 18:03:25,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:25,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:25,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-28 18:03:25,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err5ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE (and 59 more)] === [2023-08-28 18:03:25,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:25,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1217004824, now seen corresponding path program 1 times [2023-08-28 18:03:25,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:25,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972925638] [2023-08-28 18:03:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:25,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:25,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:25,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972925638] [2023-08-28 18:03:25,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972925638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:25,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:25,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:25,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114341915] [2023-08-28 18:03:25,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:25,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:25,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:25,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:25,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:25,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 308 [2023-08-28 18:03:25,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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) [2023-08-28 18:03:25,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:25,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 308 [2023-08-28 18:03:25,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:26,214 INFO L130 PetriNetUnfolder]: 691/1756 cut-off events. [2023-08-28 18:03:26,214 INFO L131 PetriNetUnfolder]: For 317/317 co-relation queries the response was YES. [2023-08-28 18:03:26,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 1756 events. 691/1756 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11442 event pairs, 586 based on Foata normal form. 0/1724 useless extension candidates. Maximal degree in co-relation 3697. Up to 1315 conditions per place. [2023-08-28 18:03:26,219 INFO L137 encePairwiseOnDemand]: 305/308 looper letters, 54 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-28 18:03:26,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 360 flow [2023-08-28 18:03:26,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:26,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-28 18:03:26,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5010822510822511 [2023-08-28 18:03:26,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-28 18:03:26,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-28 18:03:26,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:26,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-28 18:03:26,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2023-08-28 18:03:26,225 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) [2023-08-28 18:03:26,226 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) [2023-08-28 18:03:26,226 INFO L175 Difference]: Start difference. First operand has 89 places, 84 transitions, 239 flow. Second operand 3 states and 463 transitions. [2023-08-28 18:03:26,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 360 flow [2023-08-28 18:03:26,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:03:26,229 INFO L231 Difference]: Finished difference. Result has 88 places, 83 transitions, 237 flow [2023-08-28 18:03:26,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=88, PETRI_TRANSITIONS=83} [2023-08-28 18:03:26,230 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -29 predicate places. [2023-08-28 18:03:26,230 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 83 transitions, 237 flow [2023-08-28 18:03:26,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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) [2023-08-28 18:03:26,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:26,231 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:26,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-28 18:03:26,231 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err5ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE (and 59 more)] === [2023-08-28 18:03:26,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:26,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1607433200, now seen corresponding path program 1 times [2023-08-28 18:03:26,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:26,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515965424] [2023-08-28 18:03:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:26,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:03:26,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515965424] [2023-08-28 18:03:26,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515965424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:26,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:26,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:26,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483439463] [2023-08-28 18:03:26,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:26,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:26,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:26,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:26,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:26,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 308 [2023-08-28 18:03:26,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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) [2023-08-28 18:03:26,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:26,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 308 [2023-08-28 18:03:26,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:26,514 INFO L130 PetriNetUnfolder]: 691/1744 cut-off events. [2023-08-28 18:03:26,514 INFO L131 PetriNetUnfolder]: For 313/313 co-relation queries the response was YES. [2023-08-28 18:03:26,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 1744 events. 691/1744 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11281 event pairs, 590 based on Foata normal form. 0/1712 useless extension candidates. Maximal degree in co-relation 3693. Up to 1323 conditions per place. [2023-08-28 18:03:26,520 INFO L137 encePairwiseOnDemand]: 305/308 looper letters, 53 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-28 18:03:26,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 349 flow [2023-08-28 18:03:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-08-28 18:03:26,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-28 18:03:26,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-08-28 18:03:26,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-08-28 18:03:26,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:26,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-08-28 18:03:26,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2023-08-28 18:03:26,525 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) [2023-08-28 18:03:26,525 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) [2023-08-28 18:03:26,525 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 237 flow. Second operand 3 states and 462 transitions. [2023-08-28 18:03:26,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 349 flow [2023-08-28 18:03:26,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:03:26,528 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 235 flow [2023-08-28 18:03:26,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2023-08-28 18:03:26,528 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -30 predicate places. [2023-08-28 18:03:26,528 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 235 flow [2023-08-28 18:03:26,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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) [2023-08-28 18:03:26,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:26,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:26,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-28 18:03:26,529 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr2Err11ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE (and 59 more)] === [2023-08-28 18:03:26,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:26,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1909150095, now seen corresponding path program 1 times [2023-08-28 18:03:26,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:26,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108249679] [2023-08-28 18:03:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:26,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:26,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108249679] [2023-08-28 18:03:26,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108249679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:26,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:26,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:26,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224988774] [2023-08-28 18:03:26,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:26,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:26,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:26,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:26,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 308 [2023-08-28 18:03:26,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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) [2023-08-28 18:03:26,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:26,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 308 [2023-08-28 18:03:26,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:26,827 INFO L130 PetriNetUnfolder]: 691/1728 cut-off events. [2023-08-28 18:03:26,827 INFO L131 PetriNetUnfolder]: For 293/293 co-relation queries the response was YES. [2023-08-28 18:03:26,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3676 conditions, 1728 events. 691/1728 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11121 event pairs, 572 based on Foata normal form. 0/1696 useless extension candidates. Maximal degree in co-relation 3669. Up to 1285 conditions per place. [2023-08-28 18:03:26,833 INFO L137 encePairwiseOnDemand]: 305/308 looper letters, 54 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-28 18:03:26,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 356 flow [2023-08-28 18:03:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:26,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-28 18:03:26,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5010822510822511 [2023-08-28 18:03:26,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-28 18:03:26,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-28 18:03:26,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:26,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-28 18:03:26,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2023-08-28 18:03:26,839 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) [2023-08-28 18:03:26,839 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) [2023-08-28 18:03:26,839 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 235 flow. Second operand 3 states and 463 transitions. [2023-08-28 18:03:26,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 356 flow [2023-08-28 18:03:26,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 84 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:03:26,842 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 233 flow [2023-08-28 18:03:26,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2023-08-28 18:03:26,843 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -31 predicate places. [2023-08-28 18:03:26,843 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 233 flow [2023-08-28 18:03:26,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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) [2023-08-28 18:03:26,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:26,844 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:26,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-28 18:03:26,844 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr2Err11ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE (and 59 more)] === [2023-08-28 18:03:26,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:26,845 INFO L85 PathProgramCache]: Analyzing trace with hash 21599544, now seen corresponding path program 1 times [2023-08-28 18:03:26,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:26,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342342865] [2023-08-28 18:03:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:26,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:26,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:03:26,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:26,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342342865] [2023-08-28 18:03:26,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342342865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:26,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:26,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:26,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111020164] [2023-08-28 18:03:26,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:26,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:26,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:26,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:26,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:26,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 308 [2023-08-28 18:03:26,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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) [2023-08-28 18:03:26,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:26,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 308 [2023-08-28 18:03:26,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:27,118 INFO L130 PetriNetUnfolder]: 691/1716 cut-off events. [2023-08-28 18:03:27,118 INFO L131 PetriNetUnfolder]: For 313/313 co-relation queries the response was YES. [2023-08-28 18:03:27,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3672 conditions, 1716 events. 691/1716 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10953 event pairs, 590 based on Foata normal form. 0/1684 useless extension candidates. Maximal degree in co-relation 3665. Up to 1323 conditions per place. [2023-08-28 18:03:27,124 INFO L137 encePairwiseOnDemand]: 305/308 looper letters, 53 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-08-28 18:03:27,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 82 transitions, 345 flow [2023-08-28 18:03:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:27,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:27,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-08-28 18:03:27,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-28 18:03:27,126 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-08-28 18:03:27,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-08-28 18:03:27,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:27,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-08-28 18:03:27,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2023-08-28 18:03:27,130 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) [2023-08-28 18:03:27,130 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) [2023-08-28 18:03:27,130 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 233 flow. Second operand 3 states and 462 transitions. [2023-08-28 18:03:27,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 82 transitions, 345 flow [2023-08-28 18:03:27,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:03:27,133 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 231 flow [2023-08-28 18:03:27,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2023-08-28 18:03:27,134 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -32 predicate places. [2023-08-28 18:03:27,134 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 231 flow [2023-08-28 18:03:27,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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) [2023-08-28 18:03:27,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:27,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:27,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-28 18:03:27,135 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr2Err13ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE (and 59 more)] === [2023-08-28 18:03:27,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2077766479, now seen corresponding path program 1 times [2023-08-28 18:03:27,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:27,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753233246] [2023-08-28 18:03:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:27,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:27,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:27,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753233246] [2023-08-28 18:03:27,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753233246] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:27,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:27,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:27,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957514404] [2023-08-28 18:03:27,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:27,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:27,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:27,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:27,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:27,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 308 [2023-08-28 18:03:27,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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) [2023-08-28 18:03:27,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:27,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 308 [2023-08-28 18:03:27,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:27,471 INFO L130 PetriNetUnfolder]: 691/1700 cut-off events. [2023-08-28 18:03:27,471 INFO L131 PetriNetUnfolder]: For 293/293 co-relation queries the response was YES. [2023-08-28 18:03:27,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3648 conditions, 1700 events. 691/1700 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 10819 event pairs, 572 based on Foata normal form. 0/1668 useless extension candidates. Maximal degree in co-relation 3641. Up to 1285 conditions per place. [2023-08-28 18:03:27,477 INFO L137 encePairwiseOnDemand]: 305/308 looper letters, 50 selfloop transitions, 2 changer transitions 4/82 dead transitions. [2023-08-28 18:03:27,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 82 transitions, 352 flow [2023-08-28 18:03:27,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:27,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:27,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-28 18:03:27,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5010822510822511 [2023-08-28 18:03:27,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-28 18:03:27,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-28 18:03:27,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:27,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-28 18:03:27,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2023-08-28 18:03:27,482 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) [2023-08-28 18:03:27,482 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) [2023-08-28 18:03:27,482 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 231 flow. Second operand 3 states and 463 transitions. [2023-08-28 18:03:27,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 82 transitions, 352 flow [2023-08-28 18:03:27,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 82 transitions, 348 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:03:27,485 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 222 flow [2023-08-28 18:03:27,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2023-08-28 18:03:27,486 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -33 predicate places. [2023-08-28 18:03:27,486 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 222 flow [2023-08-28 18:03:27,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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) [2023-08-28 18:03:27,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:27,487 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:27,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-28 18:03:27,487 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr2Err13ASSERT_VIOLATIONDATA_RACE === [thr2Err12ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err13ASSERT_VIOLATIONDATA_RACE (and 59 more)] === [2023-08-28 18:03:27,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:27,488 INFO L85 PathProgramCache]: Analyzing trace with hash 14617112, now seen corresponding path program 1 times [2023-08-28 18:03:27,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:27,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449989844] [2023-08-28 18:03:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:27,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:03:27,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:27,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449989844] [2023-08-28 18:03:27,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449989844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:27,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:27,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:27,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464186165] [2023-08-28 18:03:27,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:27,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:27,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:27,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:27,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:27,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 308 [2023-08-28 18:03:27,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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) [2023-08-28 18:03:27,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:27,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 308 [2023-08-28 18:03:27,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:27,783 INFO L130 PetriNetUnfolder]: 482/1319 cut-off events. [2023-08-28 18:03:27,784 INFO L131 PetriNetUnfolder]: For 271/271 co-relation queries the response was YES. [2023-08-28 18:03:27,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2862 conditions, 1319 events. 482/1319 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8328 event pairs, 411 based on Foata normal form. 12/1315 useless extension candidates. Maximal degree in co-relation 2855. Up to 992 conditions per place. [2023-08-28 18:03:27,787 INFO L137 encePairwiseOnDemand]: 306/308 looper letters, 0 selfloop transitions, 0 changer transitions 77/77 dead transitions. [2023-08-28 18:03:27,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 328 flow [2023-08-28 18:03:27,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:03:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:03:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2023-08-28 18:03:27,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967532467532468 [2023-08-28 18:03:27,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2023-08-28 18:03:27,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2023-08-28 18:03:27,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:27,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2023-08-28 18:03:27,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2023-08-28 18:03:27,792 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) [2023-08-28 18:03:27,793 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) [2023-08-28 18:03:27,793 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 222 flow. Second operand 3 states and 459 transitions. [2023-08-28 18:03:27,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 328 flow [2023-08-28 18:03:27,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 77 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:03:27,795 INFO L231 Difference]: Finished difference. Result has 81 places, 0 transitions, 0 flow [2023-08-28 18:03:27,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=81, PETRI_TRANSITIONS=0} [2023-08-28 18:03:27,796 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -36 predicate places. [2023-08-28 18:03:27,796 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 0 transitions, 0 flow [2023-08-28 18:03:27,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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) [2023-08-28 18:03:27,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err12ASSERT_VIOLATIONDATA_RACE (62 of 63 remaining) [2023-08-28 18:03:27,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err13ASSERT_VIOLATIONDATA_RACE (61 of 63 remaining) [2023-08-28 18:03:27,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err4ASSERT_VIOLATIONDATA_RACE (60 of 63 remaining) [2023-08-28 18:03:27,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err13ASSERT_VIOLATIONDATA_RACE (59 of 63 remaining) [2023-08-28 18:03:27,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err12ASSERT_VIOLATIONDATA_RACE (58 of 63 remaining) [2023-08-28 18:03:27,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONDATA_RACE (57 of 63 remaining) [2023-08-28 18:03:27,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err7ASSERT_VIOLATIONDATA_RACE (56 of 63 remaining) [2023-08-28 18:03:27,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (55 of 63 remaining) [2023-08-28 18:03:27,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err6ASSERT_VIOLATIONDATA_RACE (54 of 63 remaining) [2023-08-28 18:03:27,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err3ASSERT_VIOLATIONDATA_RACE (53 of 63 remaining) [2023-08-28 18:03:27,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err1ASSERT_VIOLATIONDATA_RACE (52 of 63 remaining) [2023-08-28 18:03:27,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err4ASSERT_VIOLATIONDATA_RACE (51 of 63 remaining) [2023-08-28 18:03:27,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (50 of 63 remaining) [2023-08-28 18:03:27,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err2ASSERT_VIOLATIONDATA_RACE (49 of 63 remaining) [2023-08-28 18:03:27,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err4ASSERT_VIOLATIONDATA_RACE (48 of 63 remaining) [2023-08-28 18:03:27,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (47 of 63 remaining) [2023-08-28 18:03:27,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err6ASSERT_VIOLATIONDATA_RACE (46 of 63 remaining) [2023-08-28 18:03:27,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err10ASSERT_VIOLATIONDATA_RACE (45 of 63 remaining) [2023-08-28 18:03:27,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err3ASSERT_VIOLATIONDATA_RACE (44 of 63 remaining) [2023-08-28 18:03:27,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err10ASSERT_VIOLATIONDATA_RACE (43 of 63 remaining) [2023-08-28 18:03:27,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (42 of 63 remaining) [2023-08-28 18:03:27,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (41 of 63 remaining) [2023-08-28 18:03:27,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err9ASSERT_VIOLATIONDATA_RACE (40 of 63 remaining) [2023-08-28 18:03:27,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (39 of 63 remaining) [2023-08-28 18:03:27,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err5ASSERT_VIOLATIONDATA_RACE (38 of 63 remaining) [2023-08-28 18:03:27,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err8ASSERT_VIOLATIONDATA_RACE (37 of 63 remaining) [2023-08-28 18:03:27,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err5ASSERT_VIOLATIONDATA_RACE (36 of 63 remaining) [2023-08-28 18:03:27,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err6ASSERT_VIOLATIONDATA_RACE (35 of 63 remaining) [2023-08-28 18:03:27,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err8ASSERT_VIOLATIONDATA_RACE (34 of 63 remaining) [2023-08-28 18:03:27,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err1ASSERT_VIOLATIONDATA_RACE (33 of 63 remaining) [2023-08-28 18:03:27,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err2ASSERT_VIOLATIONDATA_RACE (32 of 63 remaining) [2023-08-28 18:03:27,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err1ASSERT_VIOLATIONDATA_RACE (31 of 63 remaining) [2023-08-28 18:03:27,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err14ASSERT_VIOLATIONDATA_RACE (30 of 63 remaining) [2023-08-28 18:03:27,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (29 of 63 remaining) [2023-08-28 18:03:27,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 63 remaining) [2023-08-28 18:03:27,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err8ASSERT_VIOLATIONDATA_RACE (27 of 63 remaining) [2023-08-28 18:03:27,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err11ASSERT_VIOLATIONDATA_RACE (26 of 63 remaining) [2023-08-28 18:03:27,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err15ASSERT_VIOLATIONDATA_RACE (25 of 63 remaining) [2023-08-28 18:03:27,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err12ASSERT_VIOLATIONDATA_RACE (24 of 63 remaining) [2023-08-28 18:03:27,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err7ASSERT_VIOLATIONDATA_RACE (23 of 63 remaining) [2023-08-28 18:03:27,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err3ASSERT_VIOLATIONDATA_RACE (22 of 63 remaining) [2023-08-28 18:03:27,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err14ASSERT_VIOLATIONDATA_RACE (21 of 63 remaining) [2023-08-28 18:03:27,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 63 remaining) [2023-08-28 18:03:27,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err2ASSERT_VIOLATIONDATA_RACE (19 of 63 remaining) [2023-08-28 18:03:27,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err15ASSERT_VIOLATIONDATA_RACE (18 of 63 remaining) [2023-08-28 18:03:27,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err11ASSERT_VIOLATIONDATA_RACE (17 of 63 remaining) [2023-08-28 18:03:27,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err7ASSERT_VIOLATIONDATA_RACE (16 of 63 remaining) [2023-08-28 18:03:27,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err15ASSERT_VIOLATIONDATA_RACE (15 of 63 remaining) [2023-08-28 18:03:27,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 63 remaining) [2023-08-28 18:03:27,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 63 remaining) [2023-08-28 18:03:27,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 63 remaining) [2023-08-28 18:03:27,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err5ASSERT_VIOLATIONDATA_RACE (11 of 63 remaining) [2023-08-28 18:03:27,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONDATA_RACE (10 of 63 remaining) [2023-08-28 18:03:27,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err13ASSERT_VIOLATIONDATA_RACE (9 of 63 remaining) [2023-08-28 18:03:27,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err9ASSERT_VIOLATIONDATA_RACE (8 of 63 remaining) [2023-08-28 18:03:27,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 63 remaining) [2023-08-28 18:03:27,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err14ASSERT_VIOLATIONDATA_RACE (6 of 63 remaining) [2023-08-28 18:03:27,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err9ASSERT_VIOLATIONDATA_RACE (5 of 63 remaining) [2023-08-28 18:03:27,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONDATA_RACE (4 of 63 remaining) [2023-08-28 18:03:27,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 63 remaining) [2023-08-28 18:03:27,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 63 remaining) [2023-08-28 18:03:27,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err10ASSERT_VIOLATIONDATA_RACE (1 of 63 remaining) [2023-08-28 18:03:27,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err11ASSERT_VIOLATIONDATA_RACE (0 of 63 remaining) [2023-08-28 18:03:27,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-28 18:03:27,810 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:27,810 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:03:27,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 210 transitions, 444 flow [2023-08-28 18:03:27,841 INFO L130 PetriNetUnfolder]: 8/211 cut-off events. [2023-08-28 18:03:27,841 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:03:27,843 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. [2023-08-28 18:03:27,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 210 transitions, 444 flow [2023-08-28 18:03:27,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 189 transitions, 393 flow [2023-08-28 18:03:27,845 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:03:27,845 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 189 transitions, 393 flow [2023-08-28 18:03:27,845 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 189 transitions, 393 flow [2023-08-28 18:03:27,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 189 transitions, 393 flow [2023-08-28 18:03:27,870 INFO L130 PetriNetUnfolder]: 8/211 cut-off events. [2023-08-28 18:03:27,870 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:03:27,872 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. [2023-08-28 18:03:27,880 INFO L119 LiptonReduction]: Number of co-enabled transitions 18334 [2023-08-28 18:03:30,471 INFO L134 LiptonReduction]: Checked pairs total: 82755 [2023-08-28 18:03:30,472 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-28 18:03:30,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:03:30,473 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;@40e77171, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:03:30,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-28 18:03:30,479 INFO L130 PetriNetUnfolder]: 1/46 cut-off events. [2023-08-28 18:03:30,479 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:03:30,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:30,480 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:30,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:03:30,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:30,481 INFO L85 PathProgramCache]: Analyzing trace with hash 792037243, now seen corresponding path program 1 times [2023-08-28 18:03:30,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:30,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265484147] [2023-08-28 18:03:30,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:30,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:03:30,492 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:03:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:03:30,503 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:03:30,503 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:03:30,503 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-28 18:03:30,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-28 18:03:30,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-28 18:03:30,504 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:03:30,505 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-28 18:03:30,505 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:03:30,505 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-28 18:03:30,582 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:03:30,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 298 transitions, 638 flow [2023-08-28 18:03:30,629 INFO L130 PetriNetUnfolder]: 10/291 cut-off events. [2023-08-28 18:03:30,629 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:03:30,634 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. [2023-08-28 18:03:30,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 299 places, 298 transitions, 638 flow [2023-08-28 18:03:30,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 257 transitions, 538 flow [2023-08-28 18:03:30,638 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:03:30,638 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 257 transitions, 538 flow [2023-08-28 18:03:30,638 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 257 transitions, 538 flow [2023-08-28 18:03:30,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 257 transitions, 538 flow [2023-08-28 18:03:30,681 INFO L130 PetriNetUnfolder]: 10/291 cut-off events. [2023-08-28 18:03:30,681 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:03:30,685 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. [2023-08-28 18:03:30,770 INFO L119 LiptonReduction]: Number of co-enabled transitions 40884 [2023-08-28 18:03:34,725 INFO L134 LiptonReduction]: Checked pairs total: 224627 [2023-08-28 18:03:34,725 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-28 18:03:34,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:03:34,726 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;@40e77171, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:03:34,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2023-08-28 18:03:34,728 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2023-08-28 18:03:34,728 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:03:34,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:34,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:03:34,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err14ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE (and 80 more)] === [2023-08-28 18:03:34,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:34,729 INFO L85 PathProgramCache]: Analyzing trace with hash 58070269, now seen corresponding path program 1 times [2023-08-28 18:03:34,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:34,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912308008] [2023-08-28 18:03:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:34,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:34,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:34,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:34,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912308008] [2023-08-28 18:03:34,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912308008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:34,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:34,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:03:34,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306773487] [2023-08-28 18:03:34,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:34,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:03:34,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:34,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:03:34,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:03:34,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 438 [2023-08-28 18:03:34,748 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) [2023-08-28 18:03:34,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:34,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 438 [2023-08-28 18:03:34,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:49,591 INFO L130 PetriNetUnfolder]: 93852/166682 cut-off events. [2023-08-28 18:03:49,591 INFO L131 PetriNetUnfolder]: For 5827/5827 co-relation queries the response was YES. [2023-08-28 18:03:50,078 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 1710537 event pairs, 81661 based on Foata normal form. 0/150441 useless extension candidates. Maximal degree in co-relation 291750. Up to 120985 conditions per place. [2023-08-28 18:03:50,724 INFO L137 encePairwiseOnDemand]: 408/438 looper letters, 54 selfloop transitions, 0 changer transitions 0/128 dead transitions. [2023-08-28 18:03:50,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 388 flow [2023-08-28 18:03:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:03:50,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:03:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 532 transitions. [2023-08-28 18:03:50,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6073059360730594 [2023-08-28 18:03:50,726 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 532 transitions. [2023-08-28 18:03:50,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 532 transitions. [2023-08-28 18:03:50,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:50,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 532 transitions. [2023-08-28 18:03:50,728 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) [2023-08-28 18:03:50,729 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) [2023-08-28 18:03:50,730 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) [2023-08-28 18:03:50,730 INFO L175 Difference]: Start difference. First operand has 164 places, 158 transitions, 340 flow. Second operand 2 states and 532 transitions. [2023-08-28 18:03:50,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 388 flow [2023-08-28 18:03:50,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 381 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-28 18:03:50,737 INFO L231 Difference]: Finished difference. Result has 134 places, 128 transitions, 273 flow [2023-08-28 18:03:50,737 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} [2023-08-28 18:03:50,741 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, -30 predicate places. [2023-08-28 18:03:50,741 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 128 transitions, 273 flow [2023-08-28 18:03:50,741 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) [2023-08-28 18:03:50,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:50,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-28 18:03:50,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-28 18:03:50,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err14ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE (and 80 more)] === [2023-08-28 18:03:50,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:50,742 INFO L85 PathProgramCache]: Analyzing trace with hash -28991488, now seen corresponding path program 1 times [2023-08-28 18:03:50,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:50,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814916626] [2023-08-28 18:03:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:50,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:03:50,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:50,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814916626] [2023-08-28 18:03:50,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814916626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:50,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:50,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:03:50,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513958598] [2023-08-28 18:03:50,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:50,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:03:50,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:50,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:03:50,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:03:50,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 438 [2023-08-28 18:03:50,866 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) [2023-08-28 18:03:50,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:50,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 438 [2023-08-28 18:03:50,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand