./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.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/29_conditionals_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:56:51,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:56:51,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:56:51,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:56:51,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:56:51,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:56:51,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:56:51,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:56:51,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:56:51,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:56:51,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:56:51,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:56:51,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:56:51,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:56:51,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:56:51,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:56:51,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:56:51,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:56:51,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:56:51,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:56:51,305 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:56:51,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:56:51,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:56:51,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:56:51,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:56:51,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:56:51,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:56:51,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:56:51,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:56:51,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:56:51,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:56:51,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:56:51,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:56:51,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:56:51,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:56:51,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:56:51,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:56:51,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:56:51,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:56:51,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:56:51,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:56:51,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:56:51,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:56:51,343 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:56:51,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:56:51,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:56:51,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:56:51,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:56:51,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:56:51,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:56:51,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:56:51,345 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:56:51,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:56:51,346 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:56:51,346 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:56:51,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:56:51,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:56:51,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:56:51,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:56:51,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:56:51,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:56:51,347 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:56:51,347 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:56:51,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:56:51,347 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:56:51,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:56:51,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:56:51,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:56:51,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:56:51,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:56:51,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:56:51,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:56:51,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:56:51,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:56:51,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:56:51,349 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:56:51,349 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:56:51,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:56:51,349 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2022-04-18 15:56:51,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:56:51,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:56:51,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:56:51,577 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:56:51,578 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:56:51,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2022-04-18 15:56:51,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31c0c58c8/41d9eec767174c70b24c85d6358459db/FLAG7213e22ee [2022-04-18 15:56:52,025 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:56:52,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2022-04-18 15:56:52,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31c0c58c8/41d9eec767174c70b24c85d6358459db/FLAG7213e22ee [2022-04-18 15:56:52,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31c0c58c8/41d9eec767174c70b24c85d6358459db [2022-04-18 15:56:52,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:56:52,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:56:52,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:56:52,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:56:52,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:56:52,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:56:52" (1/1) ... [2022-04-18 15:56:52,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa25b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:52, skipping insertion in model container [2022-04-18 15:56:52,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:56:52" (1/1) ... [2022-04-18 15:56:52,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:56:52,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:56:52,365 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/29_conditionals_vs.i[30422,30435] [2022-04-18 15:56:52,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:56:52,377 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:56:52,418 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/29_conditionals_vs.i[30422,30435] [2022-04-18 15:56:52,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:56:52,459 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:56:52,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:52 WrapperNode [2022-04-18 15:56:52,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:56:52,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:56:52,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:56:52,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:56:52,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:52" (1/1) ... [2022-04-18 15:56:52,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:52" (1/1) ... [2022-04-18 15:56:52,497 INFO L137 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 71 [2022-04-18 15:56:52,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:56:52,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:56:52,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:56:52,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:56:52,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:52" (1/1) ... [2022-04-18 15:56:52,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:52" (1/1) ... [2022-04-18 15:56:52,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:52" (1/1) ... [2022-04-18 15:56:52,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:52" (1/1) ... [2022-04-18 15:56:52,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:52" (1/1) ... [2022-04-18 15:56:52,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:52" (1/1) ... [2022-04-18 15:56:52,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:52" (1/1) ... [2022-04-18 15:56:52,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:56:52,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:56:52,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:56:52,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:56:52,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:52" (1/1) ... [2022-04-18 15:56:52,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:56:52,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:56:52,605 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 15:56:52,624 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 15:56:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 15:56:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 15:56:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:56:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:56:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:56:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:56:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:56:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:56:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:56:52,654 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 15:56:52,725 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:56:52,726 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:56:52,850 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:56:52,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:56:52,923 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-18 15:56:52,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:56:52 BoogieIcfgContainer [2022-04-18 15:56:52,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:56:52,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:56:52,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:56:52,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:56:52,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:56:52" (1/3) ... [2022-04-18 15:56:52,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ebb625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:56:52, skipping insertion in model container [2022-04-18 15:56:52,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:52" (2/3) ... [2022-04-18 15:56:52,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ebb625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:56:52, skipping insertion in model container [2022-04-18 15:56:52,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:56:52" (3/3) ... [2022-04-18 15:56:52,938 INFO L111 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2022-04-18 15:56:52,942 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:56:52,945 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:56:52,945 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-04-18 15:56:52,946 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:56:52,972 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:56:53,046 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:56:53,051 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 15:56:53,051 INFO L341 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-04-18 15:56:53,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 59 transitions, 123 flow [2022-04-18 15:56:53,078 INFO L129 PetriNetUnfolder]: 6/70 cut-off events. [2022-04-18 15:56:53,082 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:56:53,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 70 events. 6/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 4 conditions per place. [2022-04-18 15:56:53,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 59 transitions, 123 flow [2022-04-18 15:56:53,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 59 transitions, 123 flow [2022-04-18 15:56:53,097 INFO L129 PetriNetUnfolder]: 2/43 cut-off events. [2022-04-18 15:56:53,097 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:56:53,097 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:53,098 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] [2022-04-18 15:56:53,098 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 15:56:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:53,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1931193828, now seen corresponding path program 1 times [2022-04-18 15:56:53,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:53,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603480163] [2022-04-18 15:56:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:53,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:53,209 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:56:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:53,245 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:56:53,248 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:56:53,249 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-04-18 15:56:53,250 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-04-18 15:56:53,250 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-04-18 15:56:53,251 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-04-18 15:56:53,251 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-04-18 15:56:53,251 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-04-18 15:56:53,251 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-04-18 15:56:53,252 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-04-18 15:56:53,252 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-04-18 15:56:53,252 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:56:53,255 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 15:56:53,256 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:56:53,256 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:56:53,279 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:56:53,281 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:56:53,284 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 15:56:53,284 INFO L341 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-04-18 15:56:53,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 192 flow [2022-04-18 15:56:53,303 INFO L129 PetriNetUnfolder]: 11/114 cut-off events. [2022-04-18 15:56:53,303 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:56:53,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 114 events. 11/114 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 212 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2022-04-18 15:56:53,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 90 transitions, 192 flow [2022-04-18 15:56:53,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 90 transitions, 192 flow [2022-04-18 15:56:53,312 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2022-04-18 15:56:53,313 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:56:53,313 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:53,313 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 15:56:53,313 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-04-18 15:56:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:53,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2023728291, now seen corresponding path program 1 times [2022-04-18 15:56:53,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:53,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285674579] [2022-04-18 15:56:53,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:53,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:53,372 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 15:56:53,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:53,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285674579] [2022-04-18 15:56:53,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285674579] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:53,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:53,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:56:53,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404957858] [2022-04-18 15:56:53,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:53,380 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:56:53,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:53,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:56:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:56:53,399 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-04-18 15:56:53,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 192 flow. Second operand has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 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 15:56:53,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:53,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-04-18 15:56:53,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:53,430 INFO L129 PetriNetUnfolder]: 18/151 cut-off events. [2022-04-18 15:56:53,431 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-04-18 15:56:53,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 151 events. 18/151 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 383 event pairs, 6 based on Foata normal form. 20/154 useless extension candidates. Maximal degree in co-relation 54. Up to 19 conditions per place. [2022-04-18 15:56:53,433 INFO L132 encePairwiseOnDemand]: 78/90 looper letters, 6 selfloop transitions, 0 changer transitions 0/71 dead transitions. [2022-04-18 15:56:53,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 166 flow [2022-04-18 15:56:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:56:53,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:56:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 158 transitions. [2022-04-18 15:56:53,441 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8777777777777778 [2022-04-18 15:56:53,442 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 158 transitions. [2022-04-18 15:56:53,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 158 transitions. [2022-04-18 15:56:53,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:53,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 158 transitions. [2022-04-18 15:56:53,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 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 15:56:53,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 15:56:53,448 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 15:56:53,449 INFO L186 Difference]: Start difference. First operand has 86 places, 90 transitions, 192 flow. Second operand 2 states and 158 transitions. [2022-04-18 15:56:53,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 166 flow [2022-04-18 15:56:53,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 71 transitions, 164 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-04-18 15:56:53,454 INFO L242 Difference]: Finished difference. Result has 71 places, 71 transitions, 152 flow [2022-04-18 15:56:53,455 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=152, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2022-04-18 15:56:53,458 INFO L335 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2022-04-18 15:56:53,459 INFO L478 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 152 flow [2022-04-18 15:56:53,459 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 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 15:56:53,459 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:53,459 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] [2022-04-18 15:56:53,459 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:56:53,464 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-04-18 15:56:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2055891489, now seen corresponding path program 1 times [2022-04-18 15:56:53,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:53,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233900091] [2022-04-18 15:56:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:53,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:53,499 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:56:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:53,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:56:53,528 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:56:53,529 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-04-18 15:56:53,529 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2022-04-18 15:56:53,530 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2022-04-18 15:56:53,530 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2022-04-18 15:56:53,530 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2022-04-18 15:56:53,531 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2022-04-18 15:56:53,531 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2022-04-18 15:56:53,531 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2022-04-18 15:56:53,531 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2022-04-18 15:56:53,531 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2022-04-18 15:56:53,531 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2022-04-18 15:56:53,532 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2022-04-18 15:56:53,532 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2022-04-18 15:56:53,532 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:56:53,533 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 15:56:53,533 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:56:53,533 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:56:53,565 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:56:53,571 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:56:53,573 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 15:56:53,574 INFO L341 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-04-18 15:56:53,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 115 places, 121 transitions, 263 flow [2022-04-18 15:56:53,594 INFO L129 PetriNetUnfolder]: 16/158 cut-off events. [2022-04-18 15:56:53,594 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 15:56:53,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 158 events. 16/158 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 380 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 118. Up to 8 conditions per place. [2022-04-18 15:56:53,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 121 transitions, 263 flow [2022-04-18 15:56:53,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 121 transitions, 263 flow [2022-04-18 15:56:53,612 INFO L129 PetriNetUnfolder]: 3/62 cut-off events. [2022-04-18 15:56:53,615 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:56:53,615 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:53,615 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 15:56:53,615 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-04-18 15:56:53,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash 257169247, now seen corresponding path program 1 times [2022-04-18 15:56:53,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:53,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343992824] [2022-04-18 15:56:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:53,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:53,673 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 15:56:53,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:53,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343992824] [2022-04-18 15:56:53,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343992824] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:53,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:53,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:56:53,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276437493] [2022-04-18 15:56:53,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:53,675 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:56:53,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:53,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:56:53,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:56:53,677 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 121 [2022-04-18 15:56:53,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 121 transitions, 263 flow. Second operand has 2 states, 2 states have (on average 93.0) internal successors, (186), 2 states have internal predecessors, (186), 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 15:56:53,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:53,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 121 [2022-04-18 15:56:53,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:53,763 INFO L129 PetriNetUnfolder]: 81/472 cut-off events. [2022-04-18 15:56:53,764 INFO L130 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2022-04-18 15:56:53,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 472 events. 81/472 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2370 event pairs, 42 based on Foata normal form. 74/490 useless extension candidates. Maximal degree in co-relation 181. Up to 82 conditions per place. [2022-04-18 15:56:53,769 INFO L132 encePairwiseOnDemand]: 104/121 looper letters, 9 selfloop transitions, 0 changer transitions 0/96 dead transitions. [2022-04-18 15:56:53,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 96 transitions, 231 flow [2022-04-18 15:56:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:56:53,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:56:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 210 transitions. [2022-04-18 15:56:53,775 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8677685950413223 [2022-04-18 15:56:53,775 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 210 transitions. [2022-04-18 15:56:53,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 210 transitions. [2022-04-18 15:56:53,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:53,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 210 transitions. [2022-04-18 15:56:53,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 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 15:56:53,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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 15:56:53,778 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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 15:56:53,779 INFO L186 Difference]: Start difference. First operand has 115 places, 121 transitions, 263 flow. Second operand 2 states and 210 transitions. [2022-04-18 15:56:53,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 96 transitions, 231 flow [2022-04-18 15:56:53,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 96 transitions, 225 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-04-18 15:56:53,782 INFO L242 Difference]: Finished difference. Result has 95 places, 96 transitions, 207 flow [2022-04-18 15:56:53,783 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=207, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2022-04-18 15:56:53,783 INFO L335 CegarLoopForPetriNet]: 115 programPoint places, -20 predicate places. [2022-04-18 15:56:53,783 INFO L478 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 207 flow [2022-04-18 15:56:53,784 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 93.0) internal successors, (186), 2 states have internal predecessors, (186), 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 15:56:53,784 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:53,784 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:53,784 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:56:53,784 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-04-18 15:56:53,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:53,785 INFO L85 PathProgramCache]: Analyzing trace with hash 500315867, now seen corresponding path program 1 times [2022-04-18 15:56:53,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:53,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386433120] [2022-04-18 15:56:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:53,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:53,806 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:56:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:53,835 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:56:53,835 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:56:53,836 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-04-18 15:56:53,836 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-04-18 15:56:53,836 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-04-18 15:56:53,836 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-04-18 15:56:53,836 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-04-18 15:56:53,837 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-04-18 15:56:53,837 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-04-18 15:56:53,837 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-04-18 15:56:53,837 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-04-18 15:56:53,837 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-04-18 15:56:53,837 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-04-18 15:56:53,837 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-04-18 15:56:53,838 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-04-18 15:56:53,838 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-04-18 15:56:53,838 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-04-18 15:56:53,838 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-04-18 15:56:53,838 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-04-18 15:56:53,838 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:56:53,839 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 15:56:53,839 WARN L232 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:56:53,839 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-04-18 15:56:53,857 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:56:53,865 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:56:53,866 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 15:56:53,866 INFO L341 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-04-18 15:56:53,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 152 transitions, 336 flow [2022-04-18 15:56:53,883 INFO L129 PetriNetUnfolder]: 21/202 cut-off events. [2022-04-18 15:56:53,884 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-04-18 15:56:53,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 202 events. 21/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 535 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 166. Up to 10 conditions per place. [2022-04-18 15:56:53,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 152 transitions, 336 flow [2022-04-18 15:56:53,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 152 transitions, 336 flow [2022-04-18 15:56:53,892 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2022-04-18 15:56:53,892 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:56:53,892 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:53,892 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 15:56:53,893 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-04-18 15:56:53,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:53,893 INFO L85 PathProgramCache]: Analyzing trace with hash 23165663, now seen corresponding path program 1 times [2022-04-18 15:56:53,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:53,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475784307] [2022-04-18 15:56:53,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:53,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:53,939 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 15:56:53,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:53,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475784307] [2022-04-18 15:56:53,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475784307] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:53,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:53,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:56:53,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764362092] [2022-04-18 15:56:53,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:53,941 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:56:53,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:56:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:56:53,943 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 152 [2022-04-18 15:56:53,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 152 transitions, 336 flow. Second operand has 2 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 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 15:56:53,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:53,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 152 [2022-04-18 15:56:53,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:54,125 INFO L129 PetriNetUnfolder]: 324/1489 cut-off events. [2022-04-18 15:56:54,126 INFO L130 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2022-04-18 15:56:54,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2109 conditions, 1489 events. 324/1489 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10862 event pairs, 204 based on Foata normal form. 263/1579 useless extension candidates. Maximal degree in co-relation 637. Up to 325 conditions per place. [2022-04-18 15:56:54,156 INFO L132 encePairwiseOnDemand]: 130/152 looper letters, 12 selfloop transitions, 0 changer transitions 0/121 dead transitions. [2022-04-18 15:56:54,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 298 flow [2022-04-18 15:56:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:56:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:56:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 262 transitions. [2022-04-18 15:56:54,158 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8618421052631579 [2022-04-18 15:56:54,158 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 262 transitions. [2022-04-18 15:56:54,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 262 transitions. [2022-04-18 15:56:54,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:54,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 262 transitions. [2022-04-18 15:56:54,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.0) internal successors, (262), 2 states have internal predecessors, (262), 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 15:56:54,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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 15:56:54,160 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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 15:56:54,160 INFO L186 Difference]: Start difference. First operand has 144 places, 152 transitions, 336 flow. Second operand 2 states and 262 transitions. [2022-04-18 15:56:54,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 298 flow [2022-04-18 15:56:54,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 286 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-04-18 15:56:54,177 INFO L242 Difference]: Finished difference. Result has 119 places, 121 transitions, 262 flow [2022-04-18 15:56:54,177 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=262, PETRI_PLACES=119, PETRI_TRANSITIONS=121} [2022-04-18 15:56:54,179 INFO L335 CegarLoopForPetriNet]: 144 programPoint places, -25 predicate places. [2022-04-18 15:56:54,179 INFO L478 AbstractCegarLoop]: Abstraction has has 119 places, 121 transitions, 262 flow [2022-04-18 15:56:54,179 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 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 15:56:54,180 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:54,180 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:54,180 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:56:54,180 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-04-18 15:56:54,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:54,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1691042515, now seen corresponding path program 1 times [2022-04-18 15:56:54,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:54,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700256263] [2022-04-18 15:56:54,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:54,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:54,206 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:56:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:54,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:56:54,220 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:56:54,220 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-04-18 15:56:54,221 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2022-04-18 15:56:54,221 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2022-04-18 15:56:54,221 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2022-04-18 15:56:54,221 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2022-04-18 15:56:54,221 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2022-04-18 15:56:54,221 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2022-04-18 15:56:54,222 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2022-04-18 15:56:54,222 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2022-04-18 15:56:54,222 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2022-04-18 15:56:54,222 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2022-04-18 15:56:54,222 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2022-04-18 15:56:54,222 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2022-04-18 15:56:54,223 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2022-04-18 15:56:54,223 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2022-04-18 15:56:54,223 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2022-04-18 15:56:54,224 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2022-04-18 15:56:54,224 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2022-04-18 15:56:54,224 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2022-04-18 15:56:54,224 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2022-04-18 15:56:54,224 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2022-04-18 15:56:54,224 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:56:54,225 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 15:56:54,225 WARN L232 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:56:54,225 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-04-18 15:56:54,253 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:56:54,255 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:56:54,256 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 15:56:54,257 INFO L341 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-04-18 15:56:54,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 173 places, 183 transitions, 411 flow [2022-04-18 15:56:54,288 INFO L129 PetriNetUnfolder]: 26/246 cut-off events. [2022-04-18 15:56:54,289 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-04-18 15:56:54,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 246 events. 26/246 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 700 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 215. Up to 12 conditions per place. [2022-04-18 15:56:54,290 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 183 transitions, 411 flow [2022-04-18 15:56:54,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 183 transitions, 411 flow [2022-04-18 15:56:54,298 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2022-04-18 15:56:54,298 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:56:54,298 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:54,302 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 15:56:54,302 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-04-18 15:56:54,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:54,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1181980098, now seen corresponding path program 1 times [2022-04-18 15:56:54,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:54,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534421731] [2022-04-18 15:56:54,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:54,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:54,333 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 15:56:54,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:54,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534421731] [2022-04-18 15:56:54,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534421731] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:54,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:54,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:56:54,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27749178] [2022-04-18 15:56:54,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:54,334 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:56:54,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:54,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:56:54,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:56:54,338 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 183 [2022-04-18 15:56:54,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 183 transitions, 411 flow. Second operand has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 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 15:56:54,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:54,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 183 [2022-04-18 15:56:54,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:54,903 INFO L129 PetriNetUnfolder]: 1215/4702 cut-off events. [2022-04-18 15:56:54,903 INFO L130 PetriNetUnfolder]: For 2359/2359 co-relation queries the response was YES. [2022-04-18 15:56:54,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6997 conditions, 4702 events. 1215/4702 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 43553 event pairs, 852 based on Foata normal form. 911/5089 useless extension candidates. Maximal degree in co-relation 2158. Up to 1216 conditions per place. [2022-04-18 15:56:54,963 INFO L132 encePairwiseOnDemand]: 156/183 looper letters, 15 selfloop transitions, 0 changer transitions 0/146 dead transitions. [2022-04-18 15:56:54,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 146 transitions, 367 flow [2022-04-18 15:56:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:56:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:56:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 314 transitions. [2022-04-18 15:56:54,964 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8579234972677595 [2022-04-18 15:56:54,965 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 314 transitions. [2022-04-18 15:56:54,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 314 transitions. [2022-04-18 15:56:54,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:54,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 314 transitions. [2022-04-18 15:56:54,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 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 15:56:54,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 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 15:56:54,968 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 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 15:56:54,968 INFO L186 Difference]: Start difference. First operand has 173 places, 183 transitions, 411 flow. Second operand 2 states and 314 transitions. [2022-04-18 15:56:54,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 146 transitions, 367 flow [2022-04-18 15:56:54,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 146 transitions, 347 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-04-18 15:56:54,977 INFO L242 Difference]: Finished difference. Result has 143 places, 146 transitions, 317 flow [2022-04-18 15:56:54,977 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=317, PETRI_PLACES=143, PETRI_TRANSITIONS=146} [2022-04-18 15:56:54,978 INFO L335 CegarLoopForPetriNet]: 173 programPoint places, -30 predicate places. [2022-04-18 15:56:54,978 INFO L478 AbstractCegarLoop]: Abstraction has has 143 places, 146 transitions, 317 flow [2022-04-18 15:56:54,978 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 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 15:56:54,978 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:54,978 INFO L255 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:54,979 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:56:54,979 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-04-18 15:56:54,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:54,979 INFO L85 PathProgramCache]: Analyzing trace with hash 149273690, now seen corresponding path program 1 times [2022-04-18 15:56:54,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:54,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363447876] [2022-04-18 15:56:54,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:54,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:55,014 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:56:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:55,034 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:56:55,036 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:56:55,036 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-04-18 15:56:55,036 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-04-18 15:56:55,036 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-04-18 15:56:55,036 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-04-18 15:56:55,036 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-04-18 15:56:55,036 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-04-18 15:56:55,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-04-18 15:56:55,038 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-04-18 15:56:55,038 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-04-18 15:56:55,038 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-04-18 15:56:55,038 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-04-18 15:56:55,038 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-04-18 15:56:55,038 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:56:55,038 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 15:56:55,038 WARN L232 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:56:55,038 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-04-18 15:56:55,067 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:56:55,069 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:56:55,069 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 15:56:55,069 INFO L341 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-04-18 15:56:55,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 202 places, 214 transitions, 488 flow [2022-04-18 15:56:55,094 INFO L129 PetriNetUnfolder]: 31/290 cut-off events. [2022-04-18 15:56:55,094 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-04-18 15:56:55,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 290 events. 31/290 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 849 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 265. Up to 14 conditions per place. [2022-04-18 15:56:55,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 214 transitions, 488 flow [2022-04-18 15:56:55,101 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 214 transitions, 488 flow [2022-04-18 15:56:55,105 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2022-04-18 15:56:55,105 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:56:55,106 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:55,106 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 15:56:55,106 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-04-18 15:56:55,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:55,106 INFO L85 PathProgramCache]: Analyzing trace with hash -174106587, now seen corresponding path program 1 times [2022-04-18 15:56:55,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:55,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236325780] [2022-04-18 15:56:55,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:55,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:55,126 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 15:56:55,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:55,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236325780] [2022-04-18 15:56:55,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236325780] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:55,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:55,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:56:55,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684665297] [2022-04-18 15:56:55,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:55,130 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:56:55,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:55,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:56:55,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:56:55,132 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 214 [2022-04-18 15:56:55,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 214 transitions, 488 flow. Second operand has 2 states, 2 states have (on average 159.0) internal successors, (318), 2 states have internal predecessors, (318), 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 15:56:55,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:55,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 214 [2022-04-18 15:56:55,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:57,272 INFO L129 PetriNetUnfolder]: 4374/14827 cut-off events. [2022-04-18 15:56:57,272 INFO L130 PetriNetUnfolder]: For 10297/10297 co-relation queries the response was YES. [2022-04-18 15:56:57,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23036 conditions, 14827 events. 4374/14827 cut-off events. For 10297/10297 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 163842 event pairs, 3282 based on Foata normal form. 3098/16348 useless extension candidates. Maximal degree in co-relation 7180. Up to 4375 conditions per place. [2022-04-18 15:56:57,492 INFO L132 encePairwiseOnDemand]: 182/214 looper letters, 18 selfloop transitions, 0 changer transitions 0/171 dead transitions. [2022-04-18 15:56:57,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 171 transitions, 438 flow [2022-04-18 15:56:57,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:56:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:56:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 366 transitions. [2022-04-18 15:56:57,494 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8551401869158879 [2022-04-18 15:56:57,494 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 366 transitions. [2022-04-18 15:56:57,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 366 transitions. [2022-04-18 15:56:57,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:57,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 366 transitions. [2022-04-18 15:56:57,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 183.0) internal successors, (366), 2 states have internal predecessors, (366), 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 15:56:57,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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 15:56:57,497 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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 15:56:57,497 INFO L186 Difference]: Start difference. First operand has 202 places, 214 transitions, 488 flow. Second operand 2 states and 366 transitions. [2022-04-18 15:56:57,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 171 transitions, 438 flow [2022-04-18 15:56:57,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 171 transitions, 408 flow, removed 15 selfloop flow, removed 0 redundant places. [2022-04-18 15:56:57,506 INFO L242 Difference]: Finished difference. Result has 167 places, 171 transitions, 372 flow [2022-04-18 15:56:57,507 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=372, PETRI_PLACES=167, PETRI_TRANSITIONS=171} [2022-04-18 15:56:57,508 INFO L335 CegarLoopForPetriNet]: 202 programPoint places, -35 predicate places. [2022-04-18 15:56:57,508 INFO L478 AbstractCegarLoop]: Abstraction has has 167 places, 171 transitions, 372 flow [2022-04-18 15:56:57,508 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 159.0) internal successors, (318), 2 states have internal predecessors, (318), 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 15:56:57,509 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:57,509 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:57,509 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:56:57,510 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-04-18 15:56:57,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:57,510 INFO L85 PathProgramCache]: Analyzing trace with hash -365789963, now seen corresponding path program 1 times [2022-04-18 15:56:57,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:57,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278103456] [2022-04-18 15:56:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:57,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:57,537 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:56:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:57,567 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:56:57,567 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:56:57,568 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-04-18 15:56:57,568 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2022-04-18 15:56:57,568 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2022-04-18 15:56:57,568 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2022-04-18 15:56:57,568 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2022-04-18 15:56:57,568 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2022-04-18 15:56:57,568 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2022-04-18 15:56:57,569 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2022-04-18 15:56:57,569 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2022-04-18 15:56:57,569 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2022-04-18 15:56:57,569 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2022-04-18 15:56:57,569 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2022-04-18 15:56:57,569 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2022-04-18 15:56:57,570 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2022-04-18 15:56:57,570 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2022-04-18 15:56:57,570 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2022-04-18 15:56:57,570 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2022-04-18 15:56:57,570 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2022-04-18 15:56:57,570 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2022-04-18 15:56:57,570 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2022-04-18 15:56:57,570 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2022-04-18 15:56:57,571 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2022-04-18 15:56:57,571 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2022-04-18 15:56:57,571 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2022-04-18 15:56:57,571 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2022-04-18 15:56:57,572 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2022-04-18 15:56:57,572 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2022-04-18 15:56:57,572 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2022-04-18 15:56:57,572 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2022-04-18 15:56:57,572 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 15:56:57,573 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 15:56:57,573 WARN L232 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:56:57,573 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-04-18 15:56:57,612 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:56:57,613 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:56:57,613 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 15:56:57,613 INFO L341 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-04-18 15:56:57,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 231 places, 245 transitions, 567 flow [2022-04-18 15:56:57,727 INFO L129 PetriNetUnfolder]: 36/334 cut-off events. [2022-04-18 15:56:57,727 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-04-18 15:56:57,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 334 events. 36/334 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1007 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 318. Up to 16 conditions per place. [2022-04-18 15:56:57,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 245 transitions, 567 flow [2022-04-18 15:56:57,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 245 transitions, 567 flow [2022-04-18 15:56:57,737 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2022-04-18 15:56:57,737 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:56:57,737 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:57,737 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 15:56:57,737 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:56:57,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:57,738 INFO L85 PathProgramCache]: Analyzing trace with hash 508038337, now seen corresponding path program 1 times [2022-04-18 15:56:57,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:57,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866586120] [2022-04-18 15:56:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:57,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:57,751 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 15:56:57,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:57,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866586120] [2022-04-18 15:56:57,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866586120] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:57,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:57,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:56:57,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184712142] [2022-04-18 15:56:57,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:57,752 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:56:57,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:57,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:56:57,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:56:57,753 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 245 [2022-04-18 15:56:57,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 245 transitions, 567 flow. Second operand has 2 states, 2 states have (on average 181.0) internal successors, (362), 2 states have internal predecessors, (362), 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 15:56:57,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:57,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 245 [2022-04-18 15:56:57,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:05,286 INFO L129 PetriNetUnfolder]: 15309/46660 cut-off events. [2022-04-18 15:57:05,286 INFO L130 PetriNetUnfolder]: For 42373/42373 co-relation queries the response was YES. [2022-04-18 15:57:05,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75282 conditions, 46660 events. 15309/46660 cut-off events. For 42373/42373 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 590289 event pairs, 12030 based on Foata normal form. 10388/52312 useless extension candidates. Maximal degree in co-relation 23623. Up to 15310 conditions per place. [2022-04-18 15:57:06,426 INFO L132 encePairwiseOnDemand]: 208/245 looper letters, 21 selfloop transitions, 0 changer transitions 0/196 dead transitions. [2022-04-18 15:57:06,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 196 transitions, 511 flow [2022-04-18 15:57:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:57:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:57:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 418 transitions. [2022-04-18 15:57:06,428 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8530612244897959 [2022-04-18 15:57:06,428 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 418 transitions. [2022-04-18 15:57:06,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 418 transitions. [2022-04-18 15:57:06,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:06,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 418 transitions. [2022-04-18 15:57:06,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 209.0) internal successors, (418), 2 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 15:57:06,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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 15:57:06,431 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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 15:57:06,431 INFO L186 Difference]: Start difference. First operand has 231 places, 245 transitions, 567 flow. Second operand 2 states and 418 transitions. [2022-04-18 15:57:06,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 196 transitions, 511 flow [2022-04-18 15:57:06,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 196 transitions, 469 flow, removed 21 selfloop flow, removed 0 redundant places. [2022-04-18 15:57:06,464 INFO L242 Difference]: Finished difference. Result has 191 places, 196 transitions, 427 flow [2022-04-18 15:57:06,464 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=427, PETRI_PLACES=191, PETRI_TRANSITIONS=196} [2022-04-18 15:57:06,465 INFO L335 CegarLoopForPetriNet]: 231 programPoint places, -40 predicate places. [2022-04-18 15:57:06,465 INFO L478 AbstractCegarLoop]: Abstraction has has 191 places, 196 transitions, 427 flow [2022-04-18 15:57:06,465 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 181.0) internal successors, (362), 2 states have internal predecessors, (362), 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 15:57:06,465 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:06,465 INFO L255 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 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 15:57:06,466 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 15:57:06,466 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:57:06,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:06,466 INFO L85 PathProgramCache]: Analyzing trace with hash 130646041, now seen corresponding path program 1 times [2022-04-18 15:57:06,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:06,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221645535] [2022-04-18 15:57:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:06,485 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:57:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:06,500 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:57:06,500 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:57:06,501 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-04-18 15:57:06,501 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2022-04-18 15:57:06,501 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2022-04-18 15:57:06,501 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2022-04-18 15:57:06,501 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2022-04-18 15:57:06,501 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2022-04-18 15:57:06,501 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2022-04-18 15:57:06,502 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2022-04-18 15:57:06,502 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2022-04-18 15:57:06,502 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2022-04-18 15:57:06,502 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2022-04-18 15:57:06,502 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2022-04-18 15:57:06,502 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2022-04-18 15:57:06,502 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2022-04-18 15:57:06,503 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2022-04-18 15:57:06,503 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2022-04-18 15:57:06,503 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2022-04-18 15:57:06,503 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2022-04-18 15:57:06,503 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2022-04-18 15:57:06,503 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2022-04-18 15:57:06,503 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2022-04-18 15:57:06,504 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2022-04-18 15:57:06,504 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2022-04-18 15:57:06,504 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2022-04-18 15:57:06,504 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2022-04-18 15:57:06,504 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2022-04-18 15:57:06,504 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2022-04-18 15:57:06,504 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2022-04-18 15:57:06,504 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2022-04-18 15:57:06,505 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2022-04-18 15:57:06,505 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2022-04-18 15:57:06,505 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2022-04-18 15:57:06,505 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2022-04-18 15:57:06,505 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-18 15:57:06,505 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 15:57:06,506 WARN L232 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:57:06,506 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2022-04-18 15:57:06,533 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:57:06,537 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:57:06,537 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 15:57:06,537 INFO L341 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-04-18 15:57:06,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 260 places, 276 transitions, 648 flow [2022-04-18 15:57:06,575 INFO L129 PetriNetUnfolder]: 41/378 cut-off events. [2022-04-18 15:57:06,576 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-04-18 15:57:06,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 378 events. 41/378 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1180 event pairs, 0 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 372. Up to 18 conditions per place. [2022-04-18 15:57:06,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 276 transitions, 648 flow [2022-04-18 15:57:06,586 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 276 transitions, 648 flow [2022-04-18 15:57:06,589 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2022-04-18 15:57:06,590 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:57:06,590 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:06,590 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 15:57:06,590 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:57:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2099214170, now seen corresponding path program 1 times [2022-04-18 15:57:06,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:06,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932077299] [2022-04-18 15:57:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:06,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:06,607 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 15:57:06,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:06,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932077299] [2022-04-18 15:57:06,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932077299] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:06,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:06,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:57:06,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60339972] [2022-04-18 15:57:06,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:06,608 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:57:06,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:06,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:57:06,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:57:06,609 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 276 [2022-04-18 15:57:06,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 276 transitions, 648 flow. Second operand has 2 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 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 15:57:06,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:06,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 276 [2022-04-18 15:57:06,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:34,545 INFO L129 PetriNetUnfolder]: 52488/146533 cut-off events. [2022-04-18 15:57:34,545 INFO L130 PetriNetUnfolder]: For 167032/167032 co-relation queries the response was YES. [2022-04-18 15:57:37,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 244411 conditions, 146533 events. 52488/146533 cut-off events. For 167032/167032 co-relation queries the response was YES. Maximal size of possible extension queue 3858. Compared 2065789 event pairs, 42648 based on Foata normal form. 34445/166765 useless extension candidates. Maximal degree in co-relation 77083. Up to 52489 conditions per place. [2022-04-18 15:57:39,453 INFO L132 encePairwiseOnDemand]: 234/276 looper letters, 24 selfloop transitions, 0 changer transitions 0/221 dead transitions. [2022-04-18 15:57:39,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 221 transitions, 586 flow [2022-04-18 15:57:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:57:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:57:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 470 transitions. [2022-04-18 15:57:39,455 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8514492753623188 [2022-04-18 15:57:39,455 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 470 transitions. [2022-04-18 15:57:39,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 470 transitions. [2022-04-18 15:57:39,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:39,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 470 transitions. [2022-04-18 15:57:39,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 235.0) internal successors, (470), 2 states have internal predecessors, (470), 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 15:57:39,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 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 15:57:39,458 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 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 15:57:39,458 INFO L186 Difference]: Start difference. First operand has 260 places, 276 transitions, 648 flow. Second operand 2 states and 470 transitions. [2022-04-18 15:57:39,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 221 transitions, 586 flow [2022-04-18 15:57:39,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 221 transitions, 530 flow, removed 28 selfloop flow, removed 0 redundant places. [2022-04-18 15:57:39,865 INFO L242 Difference]: Finished difference. Result has 215 places, 221 transitions, 482 flow [2022-04-18 15:57:39,865 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=482, PETRI_PLACES=215, PETRI_TRANSITIONS=221} [2022-04-18 15:57:39,866 INFO L335 CegarLoopForPetriNet]: 260 programPoint places, -45 predicate places. [2022-04-18 15:57:39,866 INFO L478 AbstractCegarLoop]: Abstraction has has 215 places, 221 transitions, 482 flow [2022-04-18 15:57:39,866 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 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 15:57:39,867 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:39,867 INFO L255 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 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 15:57:39,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 15:57:39,867 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:57:39,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:39,867 INFO L85 PathProgramCache]: Analyzing trace with hash 169257977, now seen corresponding path program 1 times [2022-04-18 15:57:39,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:39,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836149724] [2022-04-18 15:57:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:39,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:39,880 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:57:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:39,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:57:39,890 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:57:39,890 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2022-04-18 15:57:39,890 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2022-04-18 15:57:39,890 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2022-04-18 15:57:39,890 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2022-04-18 15:57:39,890 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2022-04-18 15:57:39,890 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2022-04-18 15:57:39,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2022-04-18 15:57:39,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2022-04-18 15:57:39,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2022-04-18 15:57:39,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2022-04-18 15:57:39,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2022-04-18 15:57:39,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2022-04-18 15:57:39,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2022-04-18 15:57:39,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2022-04-18 15:57:39,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2022-04-18 15:57:39,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2022-04-18 15:57:39,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2022-04-18 15:57:39,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2022-04-18 15:57:39,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2022-04-18 15:57:39,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2022-04-18 15:57:39,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2022-04-18 15:57:39,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2022-04-18 15:57:39,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2022-04-18 15:57:39,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2022-04-18 15:57:39,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2022-04-18 15:57:39,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2022-04-18 15:57:39,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2022-04-18 15:57:39,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2022-04-18 15:57:39,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2022-04-18 15:57:39,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2022-04-18 15:57:39,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2022-04-18 15:57:39,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2022-04-18 15:57:39,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2022-04-18 15:57:39,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2022-04-18 15:57:39,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2022-04-18 15:57:39,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2022-04-18 15:57:39,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2022-04-18 15:57:39,894 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-18 15:57:39,895 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 15:57:39,895 WARN L232 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:57:39,895 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2022-04-18 15:57:39,920 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:57:39,921 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:57:39,921 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 15:57:39,921 INFO L341 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-04-18 15:57:39,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 289 places, 307 transitions, 731 flow [2022-04-18 15:57:39,962 INFO L129 PetriNetUnfolder]: 46/422 cut-off events. [2022-04-18 15:57:39,962 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-04-18 15:57:39,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 422 events. 46/422 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1308 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 427. Up to 20 conditions per place. [2022-04-18 15:57:39,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 307 transitions, 731 flow [2022-04-18 15:57:39,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 307 transitions, 731 flow [2022-04-18 15:57:39,977 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2022-04-18 15:57:39,977 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:57:39,978 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:39,978 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 15:57:39,978 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-04-18 15:57:39,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:39,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2022821476, now seen corresponding path program 1 times [2022-04-18 15:57:39,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:39,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692637839] [2022-04-18 15:57:39,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:39,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:39,999 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 15:57:39,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:39,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692637839] [2022-04-18 15:57:39,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692637839] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:39,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:40,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:57:40,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753228458] [2022-04-18 15:57:40,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:40,000 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:57:40,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:40,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:57:40,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:57:40,001 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 307 [2022-04-18 15:57:40,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 307 transitions, 731 flow. Second operand has 2 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 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 15:57:40,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:40,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 307 [2022-04-18 15:57:40,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand