./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c 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 /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-2.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 93834d0ed7ae29f55a5cf3676a6d16497c83e10891cd8a2ab18e9898a90eaebc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:56:10,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:56:10,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:56:10,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:56:10,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:56:10,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:56:10,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:56:10,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:56:10,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:56:10,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:56:10,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:56:10,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:56:10,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:56:10,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:56:10,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:56:10,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:56:10,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:56:10,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:56:10,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:56:10,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:56:10,325 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:56:10,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:56:10,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:56:10,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:56:10,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:56:10,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:56:10,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:56:10,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:56:10,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:56:10,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:56:10,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:56:10,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:56:10,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:56:10,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:56:10,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:56:10,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:56:10,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:56:10,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:56:10,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:56:10,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:56:10,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:56:10,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:56:10,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:56:10,351 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:56:10,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:56:10,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:56:10,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:56:10,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:56:10,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:56:10,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:56:10,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:56:10,358 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:56:10,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:56:10,359 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:56:10,359 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:56:10,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:56:10,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:56:10,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:56:10,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:56:10,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:56:10,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:56:10,360 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:56:10,360 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:56:10,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:56:10,361 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:56:10,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:56:10,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:56:10,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:56:10,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:56:10,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:56:10,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:56:10,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:56:10,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:56:10,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:56:10,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:56:10,363 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:56:10,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:56:10,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:56:10,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93834d0ed7ae29f55a5cf3676a6d16497c83e10891cd8a2ab18e9898a90eaebc [2022-04-18 15:56:10,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:56:10,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:56:10,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:56:10,602 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:56:10,602 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:56:10,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-2.i [2022-04-18 15:56:10,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e7f2723/862fef2f0d2d446c9884b3c4303047d6/FLAGdf9057ec6 [2022-04-18 15:56:11,034 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:56:11,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-2.i [2022-04-18 15:56:11,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e7f2723/862fef2f0d2d446c9884b3c4303047d6/FLAGdf9057ec6 [2022-04-18 15:56:11,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e7f2723/862fef2f0d2d446c9884b3c4303047d6 [2022-04-18 15:56:11,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:56:11,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:56:11,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:56:11,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:56:11,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:56:11,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:56:11" (1/1) ... [2022-04-18 15:56:11,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d1a252d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:11, skipping insertion in model container [2022-04-18 15:56:11,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:56:11" (1/1) ... [2022-04-18 15:56:11,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:56:11,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:56:11,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-2.i[31043,31056] [2022-04-18 15:56:11,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:56:11,746 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:56:11,786 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-2.i[31043,31056] [2022-04-18 15:56:11,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:56:11,814 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:56:11,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:11 WrapperNode [2022-04-18 15:56:11,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:56:11,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:56:11,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:56:11,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:56:11,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:11" (1/1) ... [2022-04-18 15:56:11,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:11" (1/1) ... [2022-04-18 15:56:11,872 INFO L137 Inliner]: procedures = 177, calls = 34, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 292 [2022-04-18 15:56:11,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:56:11,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:56:11,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:56:11,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:56:11,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:11" (1/1) ... [2022-04-18 15:56:11,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:11" (1/1) ... [2022-04-18 15:56:11,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:11" (1/1) ... [2022-04-18 15:56:11,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:11" (1/1) ... [2022-04-18 15:56:11,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:11" (1/1) ... [2022-04-18 15:56:11,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:11" (1/1) ... [2022-04-18 15:56:11,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:11" (1/1) ... [2022-04-18 15:56:11,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:56:11,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:56:11,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:56:11,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:56:11,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:11" (1/1) ... [2022-04-18 15:56:11,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:56:11,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:56:11,941 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) [2022-04-18 15:56:11,959 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 [2022-04-18 15:56:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:56:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 15:56:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 15:56:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:56:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:56:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:56:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:56:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:56:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:56:11,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:56:11,975 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:56:12,072 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:56:12,073 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:56:12,407 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:56:12,604 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:56:12,605 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-18 15:56:12,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:56:12 BoogieIcfgContainer [2022-04-18 15:56:12,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:56:12,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:56:12,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:56:12,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:56:12,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:56:11" (1/3) ... [2022-04-18 15:56:12,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee5bff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:56:12, skipping insertion in model container [2022-04-18 15:56:12,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:11" (2/3) ... [2022-04-18 15:56:12,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee5bff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:56:12, skipping insertion in model container [2022-04-18 15:56:12,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:56:12" (3/3) ... [2022-04-18 15:56:12,616 INFO L111 eAbstractionObserver]: Analyzing ICFG 25_stack_longest-2.i [2022-04-18 15:56:12,620 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:56:12,620 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:56:12,620 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-04-18 15:56:12,621 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:56:12,692 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:56:12,726 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:56:12,731 INFO L340 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 [2022-04-18 15:56:12,731 INFO L341 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-04-18 15:56:12,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 162 places, 166 transitions, 337 flow [2022-04-18 15:56:12,794 INFO L129 PetriNetUnfolder]: 8/177 cut-off events. [2022-04-18 15:56:12,795 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:56:12,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 177 events. 8/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 237 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-04-18 15:56:12,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 166 transitions, 337 flow [2022-04-18 15:56:12,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 166 transitions, 337 flow [2022-04-18 15:56:12,825 INFO L129 PetriNetUnfolder]: 1/37 cut-off events. [2022-04-18 15:56:12,825 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:56:12,825 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:12,826 INFO L255 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] [2022-04-18 15:56:12,826 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:56:12,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:12,830 INFO L85 PathProgramCache]: Analyzing trace with hash 621158345, now seen corresponding path program 1 times [2022-04-18 15:56:12,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:12,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248210059] [2022-04-18 15:56:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:12,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:13,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:13,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248210059] [2022-04-18 15:56:13,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248210059] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:13,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:13,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:56:13,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604725593] [2022-04-18 15:56:13,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:13,051 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:56:13,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:13,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:56:13,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:56:13,076 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 166 [2022-04-18 15:56:13,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 166 transitions, 337 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 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) [2022-04-18 15:56:13,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:13,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 166 [2022-04-18 15:56:13,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:13,169 INFO L129 PetriNetUnfolder]: 4/145 cut-off events. [2022-04-18 15:56:13,169 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:56:13,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 145 events. 4/145 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 130 event pairs, 0 based on Foata normal form. 8/138 useless extension candidates. Maximal degree in co-relation 124. Up to 10 conditions per place. [2022-04-18 15:56:13,172 INFO L132 encePairwiseOnDemand]: 147/166 looper letters, 9 selfloop transitions, 0 changer transitions 0/141 dead transitions. [2022-04-18 15:56:13,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 141 transitions, 305 flow [2022-04-18 15:56:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:56:13,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:56:13,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 304 transitions. [2022-04-18 15:56:13,187 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9156626506024096 [2022-04-18 15:56:13,188 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 304 transitions. [2022-04-18 15:56:13,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 304 transitions. [2022-04-18 15:56:13,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:13,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 304 transitions. [2022-04-18 15:56:13,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 152.0) internal successors, (304), 2 states have internal predecessors, (304), 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) [2022-04-18 15:56:13,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2022-04-18 15:56:13,204 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2022-04-18 15:56:13,205 INFO L186 Difference]: Start difference. First operand has 162 places, 166 transitions, 337 flow. Second operand 2 states and 304 transitions. [2022-04-18 15:56:13,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 141 transitions, 305 flow [2022-04-18 15:56:13,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 141 transitions, 305 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:56:13,220 INFO L242 Difference]: Finished difference. Result has 141 places, 141 transitions, 287 flow [2022-04-18 15:56:13,222 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=287, PETRI_PLACES=141, PETRI_TRANSITIONS=141} [2022-04-18 15:56:13,224 INFO L335 CegarLoopForPetriNet]: 162 programPoint places, -21 predicate places. [2022-04-18 15:56:13,225 INFO L478 AbstractCegarLoop]: Abstraction has has 141 places, 141 transitions, 287 flow [2022-04-18 15:56:13,225 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 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) [2022-04-18 15:56:13,225 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:13,226 INFO L255 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] [2022-04-18 15:56:13,226 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:56:13,226 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:56:13,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:13,227 INFO L85 PathProgramCache]: Analyzing trace with hash -67255765, now seen corresponding path program 1 times [2022-04-18 15:56:13,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:13,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476817951] [2022-04-18 15:56:13,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:13,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:13,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:13,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476817951] [2022-04-18 15:56:13,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476817951] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:13,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:13,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:13,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198287381] [2022-04-18 15:56:13,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:13,317 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:13,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:13,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:13,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:13,319 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 166 [2022-04-18 15:56:13,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 141 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2022-04-18 15:56:13,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:13,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 166 [2022-04-18 15:56:13,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:13,401 INFO L129 PetriNetUnfolder]: 6/231 cut-off events. [2022-04-18 15:56:13,405 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:56:13,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 231 events. 6/231 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 402 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 255. Up to 13 conditions per place. [2022-04-18 15:56:13,406 INFO L132 encePairwiseOnDemand]: 163/166 looper letters, 19 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2022-04-18 15:56:13,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 147 transitions, 341 flow [2022-04-18 15:56:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:13,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2022-04-18 15:56:13,408 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8393574297188755 [2022-04-18 15:56:13,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2022-04-18 15:56:13,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2022-04-18 15:56:13,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:13,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2022-04-18 15:56:13,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2022-04-18 15:56:13,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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) [2022-04-18 15:56:13,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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) [2022-04-18 15:56:13,412 INFO L186 Difference]: Start difference. First operand has 141 places, 141 transitions, 287 flow. Second operand 3 states and 418 transitions. [2022-04-18 15:56:13,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 147 transitions, 341 flow [2022-04-18 15:56:13,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 147 transitions, 341 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:56:13,418 INFO L242 Difference]: Finished difference. Result has 142 places, 140 transitions, 289 flow [2022-04-18 15:56:13,418 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=142, PETRI_TRANSITIONS=140} [2022-04-18 15:56:13,418 INFO L335 CegarLoopForPetriNet]: 162 programPoint places, -20 predicate places. [2022-04-18 15:56:13,419 INFO L478 AbstractCegarLoop]: Abstraction has has 142 places, 140 transitions, 289 flow [2022-04-18 15:56:13,419 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2022-04-18 15:56:13,419 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:13,419 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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] [2022-04-18 15:56:13,419 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:56:13,420 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:56:13,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:13,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1539336791, now seen corresponding path program 1 times [2022-04-18 15:56:13,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:13,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124392179] [2022-04-18 15:56:13,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:13,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:13,458 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:56:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:13,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:56:13,491 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:56:13,492 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 53 remaining) [2022-04-18 15:56:13,493 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 53 remaining) [2022-04-18 15:56:13,494 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 53 remaining) [2022-04-18 15:56:13,494 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 53 remaining) [2022-04-18 15:56:13,494 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 53 remaining) [2022-04-18 15:56:13,494 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 53 remaining) [2022-04-18 15:56:13,494 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 53 remaining) [2022-04-18 15:56:13,494 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 53 remaining) [2022-04-18 15:56:13,494 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 53 remaining) [2022-04-18 15:56:13,494 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 53 remaining) [2022-04-18 15:56:13,495 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 53 remaining) [2022-04-18 15:56:13,507 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 53 remaining) [2022-04-18 15:56:13,507 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 53 remaining) [2022-04-18 15:56:13,507 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 53 remaining) [2022-04-18 15:56:13,510 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 53 remaining) [2022-04-18 15:56:13,510 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 53 remaining) [2022-04-18 15:56:13,510 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 53 remaining) [2022-04-18 15:56:13,510 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 53 remaining) [2022-04-18 15:56:13,511 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 53 remaining) [2022-04-18 15:56:13,511 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (33 of 53 remaining) [2022-04-18 15:56:13,511 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (32 of 53 remaining) [2022-04-18 15:56:13,511 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (31 of 53 remaining) [2022-04-18 15:56:13,511 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 53 remaining) [2022-04-18 15:56:13,512 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (29 of 53 remaining) [2022-04-18 15:56:13,512 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (28 of 53 remaining) [2022-04-18 15:56:13,512 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (27 of 53 remaining) [2022-04-18 15:56:13,512 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 53 remaining) [2022-04-18 15:56:13,512 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 53 remaining) [2022-04-18 15:56:13,512 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 53 remaining) [2022-04-18 15:56:13,513 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 53 remaining) [2022-04-18 15:56:13,513 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 53 remaining) [2022-04-18 15:56:13,513 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 53 remaining) [2022-04-18 15:56:13,513 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 53 remaining) [2022-04-18 15:56:13,513 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 53 remaining) [2022-04-18 15:56:13,514 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 53 remaining) [2022-04-18 15:56:13,514 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 53 remaining) [2022-04-18 15:56:13,514 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 53 remaining) [2022-04-18 15:56:13,514 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 53 remaining) [2022-04-18 15:56:13,514 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 53 remaining) [2022-04-18 15:56:13,514 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 53 remaining) [2022-04-18 15:56:13,515 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 53 remaining) [2022-04-18 15:56:13,515 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 53 remaining) [2022-04-18 15:56:13,515 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 53 remaining) [2022-04-18 15:56:13,515 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 53 remaining) [2022-04-18 15:56:13,515 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 53 remaining) [2022-04-18 15:56:13,516 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (7 of 53 remaining) [2022-04-18 15:56:13,516 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (6 of 53 remaining) [2022-04-18 15:56:13,516 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (5 of 53 remaining) [2022-04-18 15:56:13,516 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 53 remaining) [2022-04-18 15:56:13,516 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (3 of 53 remaining) [2022-04-18 15:56:13,517 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (2 of 53 remaining) [2022-04-18 15:56:13,517 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (1 of 53 remaining) [2022-04-18 15:56:13,517 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 53 remaining) [2022-04-18 15:56:13,517 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:56:13,520 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 15:56:13,522 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:56:13,522 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:56:13,563 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:56:13,564 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:56:13,565 INFO L340 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 [2022-04-18 15:56:13,565 INFO L341 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2022-04-18 15:56:13,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 287 places, 295 transitions, 602 flow [2022-04-18 15:56:13,608 INFO L129 PetriNetUnfolder]: 15/319 cut-off events. [2022-04-18 15:56:13,608 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:56:13,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 319 events. 15/319 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 887 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 269. Up to 6 conditions per place. [2022-04-18 15:56:13,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 295 transitions, 602 flow [2022-04-18 15:56:13,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 295 transitions, 602 flow [2022-04-18 15:56:13,624 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2022-04-18 15:56:13,624 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:56:13,625 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:13,625 INFO L255 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] [2022-04-18 15:56:13,626 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-04-18 15:56:13,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:13,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1923334505, now seen corresponding path program 1 times [2022-04-18 15:56:13,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:13,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804257704] [2022-04-18 15:56:13,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:13,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:13,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:13,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804257704] [2022-04-18 15:56:13,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804257704] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:13,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:13,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:56:13,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257030669] [2022-04-18 15:56:13,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:13,694 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:56:13,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:13,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:56:13,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:56:13,695 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 295 [2022-04-18 15:56:13,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 295 transitions, 602 flow. Second operand has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 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) [2022-04-18 15:56:13,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:13,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 295 [2022-04-18 15:56:13,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:13,944 INFO L129 PetriNetUnfolder]: 112/1291 cut-off events. [2022-04-18 15:56:13,944 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-04-18 15:56:13,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 1291 events. 112/1291 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 8128 event pairs, 52 based on Foata normal form. 89/1207 useless extension candidates. Maximal degree in co-relation 1284. Up to 161 conditions per place. [2022-04-18 15:56:13,951 INFO L132 encePairwiseOnDemand]: 259/295 looper letters, 18 selfloop transitions, 0 changer transitions 0/252 dead transitions. [2022-04-18 15:56:13,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 252 transitions, 552 flow [2022-04-18 15:56:13,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:56:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:56:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 536 transitions. [2022-04-18 15:56:13,953 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9084745762711864 [2022-04-18 15:56:13,954 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 536 transitions. [2022-04-18 15:56:13,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 536 transitions. [2022-04-18 15:56:13,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:13,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 536 transitions. [2022-04-18 15:56:13,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 268.0) internal successors, (536), 2 states have internal predecessors, (536), 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) [2022-04-18 15:56:13,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 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) [2022-04-18 15:56:13,956 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 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) [2022-04-18 15:56:13,956 INFO L186 Difference]: Start difference. First operand has 287 places, 295 transitions, 602 flow. Second operand 2 states and 536 transitions. [2022-04-18 15:56:13,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 252 transitions, 552 flow [2022-04-18 15:56:13,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 252 transitions, 550 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-04-18 15:56:13,963 INFO L242 Difference]: Finished difference. Result has 250 places, 252 transitions, 514 flow [2022-04-18 15:56:13,963 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=514, PETRI_PLACES=250, PETRI_TRANSITIONS=252} [2022-04-18 15:56:13,966 INFO L335 CegarLoopForPetriNet]: 287 programPoint places, -37 predicate places. [2022-04-18 15:56:13,966 INFO L478 AbstractCegarLoop]: Abstraction has has 250 places, 252 transitions, 514 flow [2022-04-18 15:56:13,966 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 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) [2022-04-18 15:56:13,966 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:13,966 INFO L255 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] [2022-04-18 15:56:13,966 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:56:13,967 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-04-18 15:56:13,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:13,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1488564395, now seen corresponding path program 1 times [2022-04-18 15:56:13,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:13,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947028971] [2022-04-18 15:56:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:13,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:14,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:14,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947028971] [2022-04-18 15:56:14,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947028971] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:14,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:14,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:14,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646414341] [2022-04-18 15:56:14,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:14,011 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:14,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:14,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:14,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:14,012 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 295 [2022-04-18 15:56:14,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 252 transitions, 514 flow. Second operand has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 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) [2022-04-18 15:56:14,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:14,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 295 [2022-04-18 15:56:14,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:14,519 INFO L129 PetriNetUnfolder]: 476/4187 cut-off events. [2022-04-18 15:56:14,519 INFO L130 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-04-18 15:56:14,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5010 conditions, 4187 events. 476/4187 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 39183 event pairs, 107 based on Foata normal form. 0/3611 useless extension candidates. Maximal degree in co-relation 5005. Up to 414 conditions per place. [2022-04-18 15:56:14,545 INFO L132 encePairwiseOnDemand]: 287/295 looper letters, 51 selfloop transitions, 6 changer transitions 0/279 dead transitions. [2022-04-18 15:56:14,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 279 transitions, 687 flow [2022-04-18 15:56:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:14,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2022-04-18 15:56:14,547 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8429378531073446 [2022-04-18 15:56:14,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2022-04-18 15:56:14,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2022-04-18 15:56:14,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:14,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2022-04-18 15:56:14,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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) [2022-04-18 15:56:14,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2022-04-18 15:56:14,551 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2022-04-18 15:56:14,551 INFO L186 Difference]: Start difference. First operand has 250 places, 252 transitions, 514 flow. Second operand 3 states and 746 transitions. [2022-04-18 15:56:14,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 279 transitions, 687 flow [2022-04-18 15:56:14,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 279 transitions, 687 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:56:14,555 INFO L242 Difference]: Finished difference. Result has 254 places, 258 transitions, 566 flow [2022-04-18 15:56:14,556 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=254, PETRI_TRANSITIONS=258} [2022-04-18 15:56:14,556 INFO L335 CegarLoopForPetriNet]: 287 programPoint places, -33 predicate places. [2022-04-18 15:56:14,556 INFO L478 AbstractCegarLoop]: Abstraction has has 254 places, 258 transitions, 566 flow [2022-04-18 15:56:14,557 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 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) [2022-04-18 15:56:14,557 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:14,557 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:14,557 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:56:14,557 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-04-18 15:56:14,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:14,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1315066473, now seen corresponding path program 1 times [2022-04-18 15:56:14,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:14,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421063365] [2022-04-18 15:56:14,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:14,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:14,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:14,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421063365] [2022-04-18 15:56:14,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421063365] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:14,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:14,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:14,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844312804] [2022-04-18 15:56:14,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:14,585 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:14,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:14,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:14,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:14,587 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 295 [2022-04-18 15:56:14,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 258 transitions, 566 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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) [2022-04-18 15:56:14,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:14,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 295 [2022-04-18 15:56:14,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:15,297 INFO L129 PetriNetUnfolder]: 1099/5993 cut-off events. [2022-04-18 15:56:15,297 INFO L130 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2022-04-18 15:56:15,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8060 conditions, 5993 events. 1099/5993 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 56674 event pairs, 553 based on Foata normal form. 0/5101 useless extension candidates. Maximal degree in co-relation 8053. Up to 1730 conditions per place. [2022-04-18 15:56:15,334 INFO L132 encePairwiseOnDemand]: 287/295 looper letters, 52 selfloop transitions, 7 changer transitions 0/278 dead transitions. [2022-04-18 15:56:15,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 278 transitions, 729 flow [2022-04-18 15:56:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:15,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 720 transitions. [2022-04-18 15:56:15,336 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8135593220338984 [2022-04-18 15:56:15,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 720 transitions. [2022-04-18 15:56:15,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 720 transitions. [2022-04-18 15:56:15,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:15,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 720 transitions. [2022-04-18 15:56:15,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 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) [2022-04-18 15:56:15,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2022-04-18 15:56:15,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2022-04-18 15:56:15,339 INFO L186 Difference]: Start difference. First operand has 254 places, 258 transitions, 566 flow. Second operand 3 states and 720 transitions. [2022-04-18 15:56:15,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 278 transitions, 729 flow [2022-04-18 15:56:15,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 278 transitions, 717 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:56:15,344 INFO L242 Difference]: Finished difference. Result has 256 places, 264 transitions, 608 flow [2022-04-18 15:56:15,344 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=608, PETRI_PLACES=256, PETRI_TRANSITIONS=264} [2022-04-18 15:56:15,345 INFO L335 CegarLoopForPetriNet]: 287 programPoint places, -31 predicate places. [2022-04-18 15:56:15,345 INFO L478 AbstractCegarLoop]: Abstraction has has 256 places, 264 transitions, 608 flow [2022-04-18 15:56:15,345 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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) [2022-04-18 15:56:15,345 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:15,345 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 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] [2022-04-18 15:56:15,346 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:56:15,346 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-04-18 15:56:15,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:15,346 INFO L85 PathProgramCache]: Analyzing trace with hash -897471547, now seen corresponding path program 1 times [2022-04-18 15:56:15,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:15,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144219320] [2022-04-18 15:56:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:15,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:15,355 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:56:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:15,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:56:15,365 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:56:15,365 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (78 of 79 remaining) [2022-04-18 15:56:15,365 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (77 of 79 remaining) [2022-04-18 15:56:15,365 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (76 of 79 remaining) [2022-04-18 15:56:15,365 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (75 of 79 remaining) [2022-04-18 15:56:15,365 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (74 of 79 remaining) [2022-04-18 15:56:15,365 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (73 of 79 remaining) [2022-04-18 15:56:15,365 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (72 of 79 remaining) [2022-04-18 15:56:15,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (71 of 79 remaining) [2022-04-18 15:56:15,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (70 of 79 remaining) [2022-04-18 15:56:15,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (69 of 79 remaining) [2022-04-18 15:56:15,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (68 of 79 remaining) [2022-04-18 15:56:15,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (67 of 79 remaining) [2022-04-18 15:56:15,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (66 of 79 remaining) [2022-04-18 15:56:15,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (65 of 79 remaining) [2022-04-18 15:56:15,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (64 of 79 remaining) [2022-04-18 15:56:15,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (63 of 79 remaining) [2022-04-18 15:56:15,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (62 of 79 remaining) [2022-04-18 15:56:15,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (61 of 79 remaining) [2022-04-18 15:56:15,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (60 of 79 remaining) [2022-04-18 15:56:15,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (59 of 79 remaining) [2022-04-18 15:56:15,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (58 of 79 remaining) [2022-04-18 15:56:15,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (57 of 79 remaining) [2022-04-18 15:56:15,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (56 of 79 remaining) [2022-04-18 15:56:15,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (55 of 79 remaining) [2022-04-18 15:56:15,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (54 of 79 remaining) [2022-04-18 15:56:15,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (53 of 79 remaining) [2022-04-18 15:56:15,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (52 of 79 remaining) [2022-04-18 15:56:15,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 79 remaining) [2022-04-18 15:56:15,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 79 remaining) [2022-04-18 15:56:15,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 79 remaining) [2022-04-18 15:56:15,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 79 remaining) [2022-04-18 15:56:15,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 79 remaining) [2022-04-18 15:56:15,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (33 of 79 remaining) [2022-04-18 15:56:15,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (32 of 79 remaining) [2022-04-18 15:56:15,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (31 of 79 remaining) [2022-04-18 15:56:15,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 79 remaining) [2022-04-18 15:56:15,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (29 of 79 remaining) [2022-04-18 15:56:15,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (28 of 79 remaining) [2022-04-18 15:56:15,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (27 of 79 remaining) [2022-04-18 15:56:15,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 79 remaining) [2022-04-18 15:56:15,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 79 remaining) [2022-04-18 15:56:15,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 79 remaining) [2022-04-18 15:56:15,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 79 remaining) [2022-04-18 15:56:15,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 79 remaining) [2022-04-18 15:56:15,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 79 remaining) [2022-04-18 15:56:15,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 79 remaining) [2022-04-18 15:56:15,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 79 remaining) [2022-04-18 15:56:15,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 79 remaining) [2022-04-18 15:56:15,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 79 remaining) [2022-04-18 15:56:15,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 79 remaining) [2022-04-18 15:56:15,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 79 remaining) [2022-04-18 15:56:15,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 79 remaining) [2022-04-18 15:56:15,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 79 remaining) [2022-04-18 15:56:15,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 79 remaining) [2022-04-18 15:56:15,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 79 remaining) [2022-04-18 15:56:15,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 79 remaining) [2022-04-18 15:56:15,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 79 remaining) [2022-04-18 15:56:15,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 79 remaining) [2022-04-18 15:56:15,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (7 of 79 remaining) [2022-04-18 15:56:15,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (6 of 79 remaining) [2022-04-18 15:56:15,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (5 of 79 remaining) [2022-04-18 15:56:15,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 79 remaining) [2022-04-18 15:56:15,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (3 of 79 remaining) [2022-04-18 15:56:15,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (2 of 79 remaining) [2022-04-18 15:56:15,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (1 of 79 remaining) [2022-04-18 15:56:15,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 79 remaining) [2022-04-18 15:56:15,371 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:56:15,371 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-18 15:56:15,372 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:56:15,372 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:56:15,422 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:56:15,423 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:56:15,423 INFO L340 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 [2022-04-18 15:56:15,423 INFO L341 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2022-04-18 15:56:15,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 412 places, 424 transitions, 869 flow [2022-04-18 15:56:15,482 INFO L129 PetriNetUnfolder]: 22/461 cut-off events. [2022-04-18 15:56:15,482 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 15:56:15,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 461 events. 22/461 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1720 event pairs, 0 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 397. Up to 8 conditions per place. [2022-04-18 15:56:15,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 412 places, 424 transitions, 869 flow [2022-04-18 15:56:15,500 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 412 places, 424 transitions, 869 flow [2022-04-18 15:56:15,502 INFO L129 PetriNetUnfolder]: 2/39 cut-off events. [2022-04-18 15:56:15,502 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:56:15,502 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:15,502 INFO L255 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] [2022-04-18 15:56:15,502 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2022-04-18 15:56:15,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash -849511191, now seen corresponding path program 1 times [2022-04-18 15:56:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:15,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185633420] [2022-04-18 15:56:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:15,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:15,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:15,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185633420] [2022-04-18 15:56:15,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185633420] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:15,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:15,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:56:15,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654680356] [2022-04-18 15:56:15,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:15,523 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:56:15,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:15,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:56:15,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:56:15,524 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 424 [2022-04-18 15:56:15,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 424 transitions, 869 flow. Second operand has 2 states, 2 states have (on average 345.0) internal successors, (690), 2 states have internal predecessors, (690), 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) [2022-04-18 15:56:15,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:15,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 424 [2022-04-18 15:56:15,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:17,304 INFO L129 PetriNetUnfolder]: 1750/12254 cut-off events. [2022-04-18 15:56:17,305 INFO L130 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2022-04-18 15:56:17,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14730 conditions, 12254 events. 1750/12254 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 137484 event pairs, 962 based on Foata normal form. 959/11631 useless extension candidates. Maximal degree in co-relation 12884. Up to 2202 conditions per place. [2022-04-18 15:56:17,420 INFO L132 encePairwiseOnDemand]: 371/424 looper letters, 27 selfloop transitions, 0 changer transitions 0/363 dead transitions. [2022-04-18 15:56:17,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 363 transitions, 801 flow [2022-04-18 15:56:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:56:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:56:17,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 768 transitions. [2022-04-18 15:56:17,423 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9056603773584906 [2022-04-18 15:56:17,423 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 768 transitions. [2022-04-18 15:56:17,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 768 transitions. [2022-04-18 15:56:17,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:17,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 768 transitions. [2022-04-18 15:56:17,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 384.0) internal successors, (768), 2 states have internal predecessors, (768), 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) [2022-04-18 15:56:17,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 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) [2022-04-18 15:56:17,427 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 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) [2022-04-18 15:56:17,427 INFO L186 Difference]: Start difference. First operand has 412 places, 424 transitions, 869 flow. Second operand 2 states and 768 transitions. [2022-04-18 15:56:17,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 363 transitions, 801 flow [2022-04-18 15:56:17,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 363 transitions, 795 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-04-18 15:56:17,432 INFO L242 Difference]: Finished difference. Result has 359 places, 363 transitions, 741 flow [2022-04-18 15:56:17,432 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=741, PETRI_PLACES=359, PETRI_TRANSITIONS=363} [2022-04-18 15:56:17,433 INFO L335 CegarLoopForPetriNet]: 412 programPoint places, -53 predicate places. [2022-04-18 15:56:17,433 INFO L478 AbstractCegarLoop]: Abstraction has has 359 places, 363 transitions, 741 flow [2022-04-18 15:56:17,434 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 345.0) internal successors, (690), 2 states have internal predecessors, (690), 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) [2022-04-18 15:56:17,434 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:17,434 INFO L255 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] [2022-04-18 15:56:17,434 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:56:17,434 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2022-04-18 15:56:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:17,435 INFO L85 PathProgramCache]: Analyzing trace with hash -336412373, now seen corresponding path program 1 times [2022-04-18 15:56:17,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:17,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221007009] [2022-04-18 15:56:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:17,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:17,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:17,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221007009] [2022-04-18 15:56:17,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221007009] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:17,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:17,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:17,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818466173] [2022-04-18 15:56:17,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:17,460 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:17,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:17,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:17,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:17,462 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 424 [2022-04-18 15:56:17,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 363 transitions, 741 flow. Second operand has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 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) [2022-04-18 15:56:17,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:17,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 424 [2022-04-18 15:56:17,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:25,601 INFO L129 PetriNetUnfolder]: 14334/75296 cut-off events. [2022-04-18 15:56:25,601 INFO L130 PetriNetUnfolder]: For 973/973 co-relation queries the response was YES. [2022-04-18 15:56:26,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95570 conditions, 75296 events. 14334/75296 cut-off events. For 973/973 co-relation queries the response was YES. Maximal size of possible extension queue 1434. Compared 1149305 event pairs, 3929 based on Foata normal form. 0/64497 useless extension candidates. Maximal degree in co-relation 95564. Up to 10229 conditions per place. [2022-04-18 15:56:26,593 INFO L132 encePairwiseOnDemand]: 412/424 looper letters, 77 selfloop transitions, 9 changer transitions 0/404 dead transitions. [2022-04-18 15:56:26,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 404 transitions, 1005 flow [2022-04-18 15:56:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:26,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1067 transitions. [2022-04-18 15:56:26,596 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8388364779874213 [2022-04-18 15:56:26,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1067 transitions. [2022-04-18 15:56:26,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1067 transitions. [2022-04-18 15:56:26,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:26,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1067 transitions. [2022-04-18 15:56:26,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.6666666666667) internal successors, (1067), 3 states have internal predecessors, (1067), 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) [2022-04-18 15:56:26,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 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) [2022-04-18 15:56:26,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 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) [2022-04-18 15:56:26,602 INFO L186 Difference]: Start difference. First operand has 359 places, 363 transitions, 741 flow. Second operand 3 states and 1067 transitions. [2022-04-18 15:56:26,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 404 transitions, 1005 flow [2022-04-18 15:56:26,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 404 transitions, 1005 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:56:26,608 INFO L242 Difference]: Finished difference. Result has 363 places, 372 transitions, 819 flow [2022-04-18 15:56:26,609 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=819, PETRI_PLACES=363, PETRI_TRANSITIONS=372} [2022-04-18 15:56:26,610 INFO L335 CegarLoopForPetriNet]: 412 programPoint places, -49 predicate places. [2022-04-18 15:56:26,610 INFO L478 AbstractCegarLoop]: Abstraction has has 363 places, 372 transitions, 819 flow [2022-04-18 15:56:26,611 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 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) [2022-04-18 15:56:26,611 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:26,611 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:26,612 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:56:26,612 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2022-04-18 15:56:26,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:26,612 INFO L85 PathProgramCache]: Analyzing trace with hash -85487081, now seen corresponding path program 1 times [2022-04-18 15:56:26,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:26,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417152923] [2022-04-18 15:56:26,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:26,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:26,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:26,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417152923] [2022-04-18 15:56:26,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417152923] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:26,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:26,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:26,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755317732] [2022-04-18 15:56:26,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:26,658 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:26,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:26,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:26,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:26,660 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 424 [2022-04-18 15:56:26,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 372 transitions, 819 flow. Second operand has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 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) [2022-04-18 15:56:26,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:26,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 424 [2022-04-18 15:56:26,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:45,299 INFO L129 PetriNetUnfolder]: 48531/155268 cut-off events. [2022-04-18 15:56:45,299 INFO L130 PetriNetUnfolder]: For 3017/3021 co-relation queries the response was YES. [2022-04-18 15:56:46,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 227310 conditions, 155268 events. 48531/155268 cut-off events. For 3017/3021 co-relation queries the response was YES. Maximal size of possible extension queue 2756. Compared 2254402 event pairs, 28117 based on Foata normal form. 0/130287 useless extension candidates. Maximal degree in co-relation 227302. Up to 62838 conditions per place. [2022-04-18 15:56:47,529 INFO L132 encePairwiseOnDemand]: 412/424 looper letters, 84 selfloop transitions, 11 changer transitions 0/410 dead transitions. [2022-04-18 15:56:47,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 410 transitions, 1095 flow [2022-04-18 15:56:47,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:47,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1038 transitions. [2022-04-18 15:56:47,531 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8160377358490566 [2022-04-18 15:56:47,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1038 transitions. [2022-04-18 15:56:47,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1038 transitions. [2022-04-18 15:56:47,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:47,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1038 transitions. [2022-04-18 15:56:47,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 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) [2022-04-18 15:56:47,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 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) [2022-04-18 15:56:47,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 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) [2022-04-18 15:56:47,536 INFO L186 Difference]: Start difference. First operand has 363 places, 372 transitions, 819 flow. Second operand 3 states and 1038 transitions. [2022-04-18 15:56:47,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 410 transitions, 1095 flow [2022-04-18 15:56:47,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 410 transitions, 1077 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:56:47,556 INFO L242 Difference]: Finished difference. Result has 365 places, 382 transitions, 887 flow [2022-04-18 15:56:47,557 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=887, PETRI_PLACES=365, PETRI_TRANSITIONS=382} [2022-04-18 15:56:47,559 INFO L335 CegarLoopForPetriNet]: 412 programPoint places, -47 predicate places. [2022-04-18 15:56:47,559 INFO L478 AbstractCegarLoop]: Abstraction has has 365 places, 382 transitions, 887 flow [2022-04-18 15:56:47,560 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 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) [2022-04-18 15:56:47,560 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:47,560 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:47,560 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:56:47,560 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2022-04-18 15:56:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:47,561 INFO L85 PathProgramCache]: Analyzing trace with hash 916020735, now seen corresponding path program 1 times [2022-04-18 15:56:47,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:47,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991236760] [2022-04-18 15:56:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:47,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:47,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:47,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991236760] [2022-04-18 15:56:47,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991236760] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:47,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:47,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:47,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093382662] [2022-04-18 15:56:47,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:47,585 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:47,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:47,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:47,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:47,587 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 424 [2022-04-18 15:56:47,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 382 transitions, 887 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 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) [2022-04-18 15:56:47,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:47,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 424 [2022-04-18 15:56:47,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand