./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/07_rand.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/07_rand.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 205a9486f54af3fadf53566888e578b0d398a9ea9e18a2466103c3619a5ade13 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:55:26,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:55:26,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:55:26,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:55:26,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:55:26,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:55:26,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:55:26,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:55:26,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:55:26,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:55:26,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:55:26,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:55:26,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:55:26,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:55:26,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:55:26,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:55:26,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:55:26,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:55:26,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:55:26,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:55:26,348 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:55:26,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:55:26,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:55:26,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:55:26,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:55:26,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:55:26,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:55:26,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:55:26,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:55:26,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:55:26,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:55:26,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:55:26,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:55:26,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:55:26,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:55:26,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:55:26,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:55:26,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:55:26,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:55:26,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:55:26,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:55:26,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:55:26,365 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:55:26,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:55:26,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:55:26,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:55:26,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:55:26,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:55:26,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:55:26,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:55:26,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:55:26,389 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:55:26,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:55:26,390 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:55:26,390 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:55:26,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:55:26,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:55:26,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:55:26,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:55:26,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:55:26,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:55:26,392 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:55:26,392 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:55:26,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:55:26,396 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:55:26,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:55:26,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:55:26,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:55:26,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:55:26,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:55:26,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:55:26,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:55:26,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:55:26,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:55:26,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:55:26,398 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:55:26,399 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:55:26,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:55:26,400 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 205a9486f54af3fadf53566888e578b0d398a9ea9e18a2466103c3619a5ade13 [2022-04-18 15:55:26,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:55:26,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:55:26,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:55:26,577 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:55:26,579 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:55:26,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/07_rand.i [2022-04-18 15:55:26,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6044acc00/ee9f89be7f6f40108148213b358a3a1e/FLAGfba619996 [2022-04-18 15:55:27,017 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:55:27,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/07_rand.i [2022-04-18 15:55:27,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6044acc00/ee9f89be7f6f40108148213b358a3a1e/FLAGfba619996 [2022-04-18 15:55:27,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6044acc00/ee9f89be7f6f40108148213b358a3a1e [2022-04-18 15:55:27,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:55:27,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:55:27,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:55:27,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:55:27,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:55:27,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:55:27" (1/1) ... [2022-04-18 15:55:27,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465a669c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:27, skipping insertion in model container [2022-04-18 15:55:27,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:55:27" (1/1) ... [2022-04-18 15:55:27,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:55:27,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:55:27,260 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/07_rand.i[30402,30415] [2022-04-18 15:55:27,262 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/07_rand.i[30630,30643] [2022-04-18 15:55:27,263 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/07_rand.i[30891,30904] [2022-04-18 15:55:27,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:55:27,271 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:55:27,293 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/07_rand.i[30402,30415] [2022-04-18 15:55:27,294 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/07_rand.i[30630,30643] [2022-04-18 15:55:27,295 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/07_rand.i[30891,30904] [2022-04-18 15:55:27,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:55:27,324 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:55:27,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:27 WrapperNode [2022-04-18 15:55:27,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:55:27,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:55:27,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:55:27,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:55:27,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:27" (1/1) ... [2022-04-18 15:55:27,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:27" (1/1) ... [2022-04-18 15:55:27,377 INFO L137 Inliner]: procedures = 174, calls = 21, calls flagged for inlining = 13, calls inlined = 16, statements flattened = 162 [2022-04-18 15:55:27,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:55:27,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:55:27,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:55:27,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:55:27,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:27" (1/1) ... [2022-04-18 15:55:27,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:27" (1/1) ... [2022-04-18 15:55:27,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:27" (1/1) ... [2022-04-18 15:55:27,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:27" (1/1) ... [2022-04-18 15:55:27,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:27" (1/1) ... [2022-04-18 15:55:27,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:27" (1/1) ... [2022-04-18 15:55:27,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:27" (1/1) ... [2022-04-18 15:55:27,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:55:27,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:55:27,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:55:27,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:55:27,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:27" (1/1) ... [2022-04-18 15:55:27,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:55:27,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:55:27,441 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 15:55:27,443 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 15:55:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 15:55:27,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 15:55:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:55:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:55:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:55:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:55:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:55:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:55:27,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:55:27,483 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 15:55:27,557 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:55:27,558 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:55:27,806 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:55:27,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:55:27,859 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 15:55:27,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:55:27 BoogieIcfgContainer [2022-04-18 15:55:27,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:55:27,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:55:27,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:55:27,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:55:27,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:55:27" (1/3) ... [2022-04-18 15:55:27,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793610d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:55:27, skipping insertion in model container [2022-04-18 15:55:27,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:27" (2/3) ... [2022-04-18 15:55:27,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793610d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:55:27, skipping insertion in model container [2022-04-18 15:55:27,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:55:27" (3/3) ... [2022-04-18 15:55:27,867 INFO L111 eAbstractionObserver]: Analyzing ICFG 07_rand.i [2022-04-18 15:55:27,870 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:55:27,870 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:55:27,871 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-04-18 15:55:27,871 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:55:27,923 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:27,957 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:27,963 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 15:55:27,963 INFO L341 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-04-18 15:55:27,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 131 transitions, 267 flow [2022-04-18 15:55:28,039 INFO L129 PetriNetUnfolder]: 11/142 cut-off events. [2022-04-18 15:55:28,043 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:55:28,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 142 events. 11/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 219 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 113. Up to 4 conditions per place. [2022-04-18 15:55:28,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 131 transitions, 267 flow [2022-04-18 15:55:28,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 131 transitions, 267 flow [2022-04-18 15:55:28,061 INFO L129 PetriNetUnfolder]: 2/33 cut-off events. [2022-04-18 15:55:28,061 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:55:28,061 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:28,062 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] [2022-04-18 15:55:28,063 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:55:28,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:28,069 INFO L85 PathProgramCache]: Analyzing trace with hash -126800213, now seen corresponding path program 1 times [2022-04-18 15:55:28,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:28,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194149926] [2022-04-18 15:55:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:28,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:28,222 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 15:55:28,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:28,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194149926] [2022-04-18 15:55:28,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194149926] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:28,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:28,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:55:28,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899572784] [2022-04-18 15:55:28,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:28,231 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:55:28,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:28,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:55:28,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:55:28,263 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2022-04-18 15:55:28,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 131 transitions, 267 flow. Second operand has 2 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 15:55:28,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:28,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2022-04-18 15:55:28,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:28,367 INFO L129 PetriNetUnfolder]: 3/108 cut-off events. [2022-04-18 15:55:28,368 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:55:28,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 108 events. 3/108 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 100 event pairs, 0 based on Foata normal form. 12/108 useless extension candidates. Maximal degree in co-relation 91. Up to 7 conditions per place. [2022-04-18 15:55:28,370 INFO L132 encePairwiseOnDemand]: 113/131 looper letters, 6 selfloop transitions, 0 changer transitions 0/104 dead transitions. [2022-04-18 15:55:28,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 104 transitions, 225 flow [2022-04-18 15:55:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:55:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:55:28,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 232 transitions. [2022-04-18 15:55:28,381 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8854961832061069 [2022-04-18 15:55:28,381 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 232 transitions. [2022-04-18 15:55:28,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 232 transitions. [2022-04-18 15:55:28,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:28,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 232 transitions. [2022-04-18 15:55:28,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 116.0) internal successors, (232), 2 states have internal predecessors, (232), 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 15:55:28,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 15:55:28,394 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 15:55:28,395 INFO L186 Difference]: Start difference. First operand has 124 places, 131 transitions, 267 flow. Second operand 2 states and 232 transitions. [2022-04-18 15:55:28,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 104 transitions, 225 flow [2022-04-18 15:55:28,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 104 transitions, 225 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:55:28,402 INFO L242 Difference]: Finished difference. Result has 105 places, 104 transitions, 213 flow [2022-04-18 15:55:28,403 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=213, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2022-04-18 15:55:28,406 INFO L335 CegarLoopForPetriNet]: 124 programPoint places, -19 predicate places. [2022-04-18 15:55:28,406 INFO L478 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 213 flow [2022-04-18 15:55:28,407 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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 15:55:28,407 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:28,407 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] [2022-04-18 15:55:28,407 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:55:28,408 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:55:28,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:28,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1595901682, now seen corresponding path program 1 times [2022-04-18 15:55:28,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:28,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014840999] [2022-04-18 15:55:28,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:28,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:28,488 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 15:55:28,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:28,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014840999] [2022-04-18 15:55:28,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014840999] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:28,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:28,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:55:28,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013124779] [2022-04-18 15:55:28,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:28,491 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:55:28,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:28,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:55:28,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:55:28,492 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 131 [2022-04-18 15:55:28,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 15:55:28,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:28,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 131 [2022-04-18 15:55:28,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:28,529 INFO L129 PetriNetUnfolder]: 3/107 cut-off events. [2022-04-18 15:55:28,532 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:55:28,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 107 events. 3/107 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 97 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 121. Up to 7 conditions per place. [2022-04-18 15:55:28,534 INFO L132 encePairwiseOnDemand]: 128/131 looper letters, 9 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2022-04-18 15:55:28,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 103 transitions, 233 flow [2022-04-18 15:55:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:55:28,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:55:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2022-04-18 15:55:28,538 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7786259541984732 [2022-04-18 15:55:28,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2022-04-18 15:55:28,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2022-04-18 15:55:28,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:28,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2022-04-18 15:55:28,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 15:55:28,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 15:55:28,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 15:55:28,543 INFO L186 Difference]: Start difference. First operand has 105 places, 104 transitions, 213 flow. Second operand 3 states and 306 transitions. [2022-04-18 15:55:28,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 103 transitions, 233 flow [2022-04-18 15:55:28,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 103 transitions, 233 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:55:28,545 INFO L242 Difference]: Finished difference. Result has 106 places, 103 transitions, 215 flow [2022-04-18 15:55:28,546 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2022-04-18 15:55:28,546 INFO L335 CegarLoopForPetriNet]: 124 programPoint places, -18 predicate places. [2022-04-18 15:55:28,547 INFO L478 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 215 flow [2022-04-18 15:55:28,547 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 15:55:28,547 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:28,548 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:28,548 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:55:28,548 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:55:28,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:28,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1440175753, now seen corresponding path program 1 times [2022-04-18 15:55:28,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:28,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725312037] [2022-04-18 15:55:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:28,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:28,572 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:55:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:28,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:55:28,614 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:55:28,615 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-04-18 15:55:28,616 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2022-04-18 15:55:28,616 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2022-04-18 15:55:28,617 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2022-04-18 15:55:28,617 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2022-04-18 15:55:28,618 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2022-04-18 15:55:28,618 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2022-04-18 15:55:28,618 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2022-04-18 15:55:28,618 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2022-04-18 15:55:28,618 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2022-04-18 15:55:28,618 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2022-04-18 15:55:28,619 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2022-04-18 15:55:28,619 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2022-04-18 15:55:28,620 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2022-04-18 15:55:28,622 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2022-04-18 15:55:28,623 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2022-04-18 15:55:28,623 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2022-04-18 15:55:28,623 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2022-04-18 15:55:28,623 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2022-04-18 15:55:28,623 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2022-04-18 15:55:28,623 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2022-04-18 15:55:28,624 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2022-04-18 15:55:28,624 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2022-04-18 15:55:28,625 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2022-04-18 15:55:28,625 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2022-04-18 15:55:28,625 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2022-04-18 15:55:28,625 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2022-04-18 15:55:28,626 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2022-04-18 15:55:28,627 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2022-04-18 15:55:28,627 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2022-04-18 15:55:28,627 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2022-04-18 15:55:28,627 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2022-04-18 15:55:28,627 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2022-04-18 15:55:28,628 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:55:28,630 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 15:55:28,632 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:55:28,632 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:55:28,675 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:28,677 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:28,681 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 15:55:28,681 INFO L341 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-04-18 15:55:28,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 218 places, 232 transitions, 476 flow [2022-04-18 15:55:28,732 INFO L129 PetriNetUnfolder]: 21/256 cut-off events. [2022-04-18 15:55:28,732 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:55:28,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 256 events. 21/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 774 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 213. Up to 6 conditions per place. [2022-04-18 15:55:28,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 232 transitions, 476 flow [2022-04-18 15:55:28,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 232 transitions, 476 flow [2022-04-18 15:55:28,743 INFO L129 PetriNetUnfolder]: 1/30 cut-off events. [2022-04-18 15:55:28,743 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:55:28,743 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:28,743 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] [2022-04-18 15:55:28,743 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-04-18 15:55:28,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:28,744 INFO L85 PathProgramCache]: Analyzing trace with hash 500438136, now seen corresponding path program 1 times [2022-04-18 15:55:28,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:28,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943014437] [2022-04-18 15:55:28,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:28,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:28,780 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 15:55:28,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:28,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943014437] [2022-04-18 15:55:28,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943014437] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:28,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:28,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:55:28,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585133701] [2022-04-18 15:55:28,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:28,782 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:55:28,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:28,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:55:28,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:55:28,784 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 232 [2022-04-18 15:55:28,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 232 transitions, 476 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 15:55:28,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:28,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 232 [2022-04-18 15:55:28,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:28,862 INFO L129 PetriNetUnfolder]: 54/699 cut-off events. [2022-04-18 15:55:28,862 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-04-18 15:55:28,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 699 events. 54/699 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4052 event pairs, 30 based on Foata normal form. 104/699 useless extension candidates. Maximal degree in co-relation 646. Up to 73 conditions per place. [2022-04-18 15:55:28,867 INFO L132 encePairwiseOnDemand]: 198/232 looper letters, 12 selfloop transitions, 0 changer transitions 0/185 dead transitions. [2022-04-18 15:55:28,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 185 transitions, 406 flow [2022-04-18 15:55:28,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:55:28,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:55:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 406 transitions. [2022-04-18 15:55:28,869 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-04-18 15:55:28,869 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 406 transitions. [2022-04-18 15:55:28,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 406 transitions. [2022-04-18 15:55:28,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:28,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 406 transitions. [2022-04-18 15:55:28,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 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 15:55:28,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 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 15:55:28,872 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 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 15:55:28,872 INFO L186 Difference]: Start difference. First operand has 218 places, 232 transitions, 476 flow. Second operand 2 states and 406 transitions. [2022-04-18 15:55:28,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 185 transitions, 406 flow [2022-04-18 15:55:28,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 185 transitions, 404 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-04-18 15:55:28,875 INFO L242 Difference]: Finished difference. Result has 185 places, 185 transitions, 380 flow [2022-04-18 15:55:28,875 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=380, PETRI_PLACES=185, PETRI_TRANSITIONS=185} [2022-04-18 15:55:28,876 INFO L335 CegarLoopForPetriNet]: 218 programPoint places, -33 predicate places. [2022-04-18 15:55:28,876 INFO L478 AbstractCegarLoop]: Abstraction has has 185 places, 185 transitions, 380 flow [2022-04-18 15:55:28,876 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 15:55:28,877 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:28,877 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] [2022-04-18 15:55:28,877 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:55:28,877 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-04-18 15:55:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:28,877 INFO L85 PathProgramCache]: Analyzing trace with hash -115260070, now seen corresponding path program 1 times [2022-04-18 15:55:28,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:28,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018835433] [2022-04-18 15:55:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:28,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:28,895 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 15:55:28,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:28,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018835433] [2022-04-18 15:55:28,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018835433] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:28,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:28,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:55:28,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645372730] [2022-04-18 15:55:28,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:28,897 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:55:28,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:28,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:55:28,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:55:28,898 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 232 [2022-04-18 15:55:28,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 185 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 15:55:28,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:28,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 232 [2022-04-18 15:55:28,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:29,043 INFO L129 PetriNetUnfolder]: 202/1601 cut-off events. [2022-04-18 15:55:29,044 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-04-18 15:55:29,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1968 conditions, 1601 events. 202/1601 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 12696 event pairs, 56 based on Foata normal form. 0/1361 useless extension candidates. Maximal degree in co-relation 1963. Up to 168 conditions per place. [2022-04-18 15:55:29,053 INFO L132 encePairwiseOnDemand]: 224/232 looper letters, 39 selfloop transitions, 6 changer transitions 0/206 dead transitions. [2022-04-18 15:55:29,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 206 transitions, 517 flow [2022-04-18 15:55:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:55:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:55:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 551 transitions. [2022-04-18 15:55:29,055 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2022-04-18 15:55:29,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 551 transitions. [2022-04-18 15:55:29,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 551 transitions. [2022-04-18 15:55:29,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:29,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 551 transitions. [2022-04-18 15:55:29,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 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 15:55:29,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 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 15:55:29,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 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 15:55:29,058 INFO L186 Difference]: Start difference. First operand has 185 places, 185 transitions, 380 flow. Second operand 3 states and 551 transitions. [2022-04-18 15:55:29,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 206 transitions, 517 flow [2022-04-18 15:55:29,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 206 transitions, 517 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:55:29,062 INFO L242 Difference]: Finished difference. Result has 189 places, 191 transitions, 432 flow [2022-04-18 15:55:29,062 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=189, PETRI_TRANSITIONS=191} [2022-04-18 15:55:29,062 INFO L335 CegarLoopForPetriNet]: 218 programPoint places, -29 predicate places. [2022-04-18 15:55:29,063 INFO L478 AbstractCegarLoop]: Abstraction has has 189 places, 191 transitions, 432 flow [2022-04-18 15:55:29,063 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 15:55:29,063 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:29,063 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:29,063 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:55:29,064 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-04-18 15:55:29,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:29,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1238817268, now seen corresponding path program 1 times [2022-04-18 15:55:29,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:29,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705600522] [2022-04-18 15:55:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:29,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:29,074 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:55:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:29,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:55:29,082 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:55:29,082 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2022-04-18 15:55:29,082 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2022-04-18 15:55:29,082 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2022-04-18 15:55:29,082 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2022-04-18 15:55:29,083 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2022-04-18 15:55:29,083 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2022-04-18 15:55:29,083 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2022-04-18 15:55:29,083 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2022-04-18 15:55:29,083 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2022-04-18 15:55:29,083 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2022-04-18 15:55:29,084 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2022-04-18 15:55:29,084 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2022-04-18 15:55:29,084 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2022-04-18 15:55:29,084 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2022-04-18 15:55:29,084 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2022-04-18 15:55:29,084 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2022-04-18 15:55:29,084 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2022-04-18 15:55:29,085 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2022-04-18 15:55:29,085 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2022-04-18 15:55:29,085 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2022-04-18 15:55:29,085 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2022-04-18 15:55:29,085 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2022-04-18 15:55:29,085 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2022-04-18 15:55:29,085 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2022-04-18 15:55:29,086 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2022-04-18 15:55:29,086 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2022-04-18 15:55:29,086 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2022-04-18 15:55:29,086 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2022-04-18 15:55:29,087 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2022-04-18 15:55:29,087 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2022-04-18 15:55:29,087 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2022-04-18 15:55:29,087 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2022-04-18 15:55:29,087 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2022-04-18 15:55:29,087 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2022-04-18 15:55:29,088 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2022-04-18 15:55:29,088 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2022-04-18 15:55:29,088 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2022-04-18 15:55:29,088 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2022-04-18 15:55:29,088 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2022-04-18 15:55:29,089 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2022-04-18 15:55:29,089 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2022-04-18 15:55:29,089 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2022-04-18 15:55:29,089 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2022-04-18 15:55:29,089 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2022-04-18 15:55:29,089 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2022-04-18 15:55:29,090 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2022-04-18 15:55:29,090 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2022-04-18 15:55:29,090 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2022-04-18 15:55:29,090 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2022-04-18 15:55:29,090 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:55:29,091 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 15:55:29,091 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:55:29,091 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:55:29,116 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:29,117 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:29,117 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 15:55:29,118 INFO L341 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2022-04-18 15:55:29,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 312 places, 333 transitions, 687 flow [2022-04-18 15:55:29,158 INFO L129 PetriNetUnfolder]: 31/370 cut-off events. [2022-04-18 15:55:29,158 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 15:55:29,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 370 events. 31/370 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1415 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 313. Up to 8 conditions per place. [2022-04-18 15:55:29,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 333 transitions, 687 flow [2022-04-18 15:55:29,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 333 transitions, 687 flow [2022-04-18 15:55:29,170 INFO L129 PetriNetUnfolder]: 1/30 cut-off events. [2022-04-18 15:55:29,170 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:55:29,170 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:29,170 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] [2022-04-18 15:55:29,170 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-04-18 15:55:29,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:29,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1474746185, now seen corresponding path program 1 times [2022-04-18 15:55:29,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:29,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254787427] [2022-04-18 15:55:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:29,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:29,182 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 15:55:29,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:29,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254787427] [2022-04-18 15:55:29,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254787427] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:29,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:29,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:55:29,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264744244] [2022-04-18 15:55:29,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:29,183 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:55:29,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:29,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:55:29,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:55:29,185 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 333 [2022-04-18 15:55:29,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 333 transitions, 687 flow. Second operand has 2 states, 2 states have (on average 257.0) internal successors, (514), 2 states have internal predecessors, (514), 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 15:55:29,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:29,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 333 [2022-04-18 15:55:29,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:29,671 INFO L129 PetriNetUnfolder]: 543/4464 cut-off events. [2022-04-18 15:55:29,671 INFO L130 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2022-04-18 15:55:29,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5284 conditions, 4464 events. 543/4464 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 45241 event pairs, 390 based on Foata normal form. 825/4599 useless extension candidates. Maximal degree in co-relation 4271. Up to 649 conditions per place. [2022-04-18 15:55:29,712 INFO L132 encePairwiseOnDemand]: 283/333 looper letters, 18 selfloop transitions, 0 changer transitions 0/266 dead transitions. [2022-04-18 15:55:29,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 266 transitions, 589 flow [2022-04-18 15:55:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:55:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:55:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 580 transitions. [2022-04-18 15:55:29,714 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8708708708708709 [2022-04-18 15:55:29,714 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 580 transitions. [2022-04-18 15:55:29,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 580 transitions. [2022-04-18 15:55:29,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:29,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 580 transitions. [2022-04-18 15:55:29,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 290.0) internal successors, (580), 2 states have internal predecessors, (580), 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 15:55:29,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 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 15:55:29,717 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 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 15:55:29,717 INFO L186 Difference]: Start difference. First operand has 312 places, 333 transitions, 687 flow. Second operand 2 states and 580 transitions. [2022-04-18 15:55:29,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 266 transitions, 589 flow [2022-04-18 15:55:29,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 266 transitions, 583 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-04-18 15:55:29,722 INFO L242 Difference]: Finished difference. Result has 265 places, 266 transitions, 547 flow [2022-04-18 15:55:29,722 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=547, PETRI_PLACES=265, PETRI_TRANSITIONS=266} [2022-04-18 15:55:29,724 INFO L335 CegarLoopForPetriNet]: 312 programPoint places, -47 predicate places. [2022-04-18 15:55:29,724 INFO L478 AbstractCegarLoop]: Abstraction has has 265 places, 266 transitions, 547 flow [2022-04-18 15:55:29,725 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 257.0) internal successors, (514), 2 states have internal predecessors, (514), 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 15:55:29,725 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:29,725 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] [2022-04-18 15:55:29,725 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:55:29,725 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-04-18 15:55:29,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:29,726 INFO L85 PathProgramCache]: Analyzing trace with hash -108084853, now seen corresponding path program 1 times [2022-04-18 15:55:29,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:29,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094609950] [2022-04-18 15:55:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:29,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:29,805 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 15:55:29,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:29,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094609950] [2022-04-18 15:55:29,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094609950] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:29,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:29,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:55:29,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065826884] [2022-04-18 15:55:29,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:29,807 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:55:29,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:29,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:55:29,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:55:29,808 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 333 [2022-04-18 15:55:29,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 266 transitions, 547 flow. Second operand has 3 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 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 15:55:29,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:29,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 333 [2022-04-18 15:55:29,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:32,096 INFO L129 PetriNetUnfolder]: 5238/25416 cut-off events. [2022-04-18 15:55:32,096 INFO L130 PetriNetUnfolder]: For 541/541 co-relation queries the response was YES. [2022-04-18 15:55:32,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33003 conditions, 25416 events. 5238/25416 cut-off events. For 541/541 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 348375 event pairs, 1607 based on Foata normal form. 0/21454 useless extension candidates. Maximal degree in co-relation 32997. Up to 3658 conditions per place. [2022-04-18 15:55:32,445 INFO L132 encePairwiseOnDemand]: 321/333 looper letters, 59 selfloop transitions, 9 changer transitions 0/298 dead transitions. [2022-04-18 15:55:32,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 298 transitions, 757 flow [2022-04-18 15:55:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:55:32,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:55:32,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 785 transitions. [2022-04-18 15:55:32,448 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7857857857857858 [2022-04-18 15:55:32,448 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 785 transitions. [2022-04-18 15:55:32,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 785 transitions. [2022-04-18 15:55:32,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:32,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 785 transitions. [2022-04-18 15:55:32,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 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 15:55:32,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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 15:55:32,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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 15:55:32,452 INFO L186 Difference]: Start difference. First operand has 265 places, 266 transitions, 547 flow. Second operand 3 states and 785 transitions. [2022-04-18 15:55:32,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 298 transitions, 757 flow [2022-04-18 15:55:32,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 298 transitions, 757 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:55:32,456 INFO L242 Difference]: Finished difference. Result has 269 places, 275 transitions, 625 flow [2022-04-18 15:55:32,457 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=625, PETRI_PLACES=269, PETRI_TRANSITIONS=275} [2022-04-18 15:55:32,457 INFO L335 CegarLoopForPetriNet]: 312 programPoint places, -43 predicate places. [2022-04-18 15:55:32,457 INFO L478 AbstractCegarLoop]: Abstraction has has 269 places, 275 transitions, 625 flow [2022-04-18 15:55:32,458 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 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 15:55:32,458 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:32,458 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:32,458 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:55:32,458 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-04-18 15:55:32,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:32,459 INFO L85 PathProgramCache]: Analyzing trace with hash -859897735, now seen corresponding path program 1 times [2022-04-18 15:55:32,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:32,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980231795] [2022-04-18 15:55:32,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:32,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:32,475 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 15:55:32,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:32,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980231795] [2022-04-18 15:55:32,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980231795] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:32,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:32,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:55:32,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204507669] [2022-04-18 15:55:32,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:32,476 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:55:32,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:32,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:55:32,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:55:32,478 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 333 [2022-04-18 15:55:32,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 275 transitions, 625 flow. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 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 15:55:32,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:32,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 333 [2022-04-18 15:55:32,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:39,847 INFO L129 PetriNetUnfolder]: 28710/83753 cut-off events. [2022-04-18 15:55:39,848 INFO L130 PetriNetUnfolder]: For 2246/2250 co-relation queries the response was YES. [2022-04-18 15:55:40,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128861 conditions, 83753 events. 28710/83753 cut-off events. For 2246/2250 co-relation queries the response was YES. Maximal size of possible extension queue 2294. Compared 1146052 event pairs, 22160 based on Foata normal form. 0/66842 useless extension candidates. Maximal degree in co-relation 128853. Up to 38458 conditions per place. [2022-04-18 15:55:40,802 INFO L132 encePairwiseOnDemand]: 321/333 looper letters, 84 selfloop transitions, 11 changer transitions 0/313 dead transitions. [2022-04-18 15:55:40,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 313 transitions, 901 flow [2022-04-18 15:55:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:55:40,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:55:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 747 transitions. [2022-04-18 15:55:40,804 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2022-04-18 15:55:40,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 747 transitions. [2022-04-18 15:55:40,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 747 transitions. [2022-04-18 15:55:40,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:40,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 747 transitions. [2022-04-18 15:55:40,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 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 15:55:40,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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 15:55:40,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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 15:55:40,809 INFO L186 Difference]: Start difference. First operand has 269 places, 275 transitions, 625 flow. Second operand 3 states and 747 transitions. [2022-04-18 15:55:40,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 313 transitions, 901 flow [2022-04-18 15:55:40,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 313 transitions, 883 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:55:40,822 INFO L242 Difference]: Finished difference. Result has 271 places, 285 transitions, 693 flow [2022-04-18 15:55:40,822 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=693, PETRI_PLACES=271, PETRI_TRANSITIONS=285} [2022-04-18 15:55:40,823 INFO L335 CegarLoopForPetriNet]: 312 programPoint places, -41 predicate places. [2022-04-18 15:55:40,823 INFO L478 AbstractCegarLoop]: Abstraction has has 271 places, 285 transitions, 693 flow [2022-04-18 15:55:40,824 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 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 15:55:40,824 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:40,824 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:40,824 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:55:40,824 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-04-18 15:55:40,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:40,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1664133600, now seen corresponding path program 1 times [2022-04-18 15:55:40,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:40,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118855492] [2022-04-18 15:55:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:40,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:40,851 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 15:55:40,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:40,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118855492] [2022-04-18 15:55:40,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118855492] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:40,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:40,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:55:40,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211500044] [2022-04-18 15:55:40,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:40,852 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:55:40,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:40,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:55:40,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:55:40,855 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 333 [2022-04-18 15:55:40,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 285 transitions, 693 flow. Second operand has 3 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 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 15:55:40,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:40,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 333 [2022-04-18 15:55:40,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:43,904 INFO L129 PetriNetUnfolder]: 9055/34923 cut-off events. [2022-04-18 15:55:43,905 INFO L130 PetriNetUnfolder]: For 2992/3933 co-relation queries the response was YES. [2022-04-18 15:55:44,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52976 conditions, 34923 events. 9055/34923 cut-off events. For 2992/3933 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 468596 event pairs, 4977 based on Foata normal form. 15/27734 useless extension candidates. Maximal degree in co-relation 52967. Up to 9181 conditions per place. [2022-04-18 15:55:44,342 INFO L132 encePairwiseOnDemand]: 325/333 looper letters, 67 selfloop transitions, 12 changer transitions 0/317 dead transitions. [2022-04-18 15:55:44,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 317 transitions, 953 flow [2022-04-18 15:55:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:55:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:55:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2022-04-18 15:55:44,350 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7737737737737738 [2022-04-18 15:55:44,350 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2022-04-18 15:55:44,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2022-04-18 15:55:44,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:44,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2022-04-18 15:55:44,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:55:44,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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 15:55:44,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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 15:55:44,353 INFO L186 Difference]: Start difference. First operand has 271 places, 285 transitions, 693 flow. Second operand 3 states and 773 transitions. [2022-04-18 15:55:44,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 317 transitions, 953 flow [2022-04-18 15:55:44,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 317 transitions, 931 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:55:44,377 INFO L242 Difference]: Finished difference. Result has 273 places, 295 transitions, 777 flow [2022-04-18 15:55:44,377 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=777, PETRI_PLACES=273, PETRI_TRANSITIONS=295} [2022-04-18 15:55:44,378 INFO L335 CegarLoopForPetriNet]: 312 programPoint places, -39 predicate places. [2022-04-18 15:55:44,378 INFO L478 AbstractCegarLoop]: Abstraction has has 273 places, 295 transitions, 777 flow [2022-04-18 15:55:44,379 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 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 15:55:44,379 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:44,379 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, 1, 1] [2022-04-18 15:55:44,379 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:55:44,379 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-04-18 15:55:44,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:44,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1376605782, now seen corresponding path program 1 times [2022-04-18 15:55:44,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:44,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882933661] [2022-04-18 15:55:44,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:44,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:44,400 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:55:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:44,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:55:44,420 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:55:44,420 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2022-04-18 15:55:44,421 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (63 of 65 remaining) [2022-04-18 15:55:44,421 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (62 of 65 remaining) [2022-04-18 15:55:44,421 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (61 of 65 remaining) [2022-04-18 15:55:44,421 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (60 of 65 remaining) [2022-04-18 15:55:44,421 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (59 of 65 remaining) [2022-04-18 15:55:44,421 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (58 of 65 remaining) [2022-04-18 15:55:44,421 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (57 of 65 remaining) [2022-04-18 15:55:44,422 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (56 of 65 remaining) [2022-04-18 15:55:44,422 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (55 of 65 remaining) [2022-04-18 15:55:44,422 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (54 of 65 remaining) [2022-04-18 15:55:44,422 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (53 of 65 remaining) [2022-04-18 15:55:44,422 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (52 of 65 remaining) [2022-04-18 15:55:44,422 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (51 of 65 remaining) [2022-04-18 15:55:44,422 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (50 of 65 remaining) [2022-04-18 15:55:44,423 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (49 of 65 remaining) [2022-04-18 15:55:44,423 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (48 of 65 remaining) [2022-04-18 15:55:44,423 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 65 remaining) [2022-04-18 15:55:44,423 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 65 remaining) [2022-04-18 15:55:44,423 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 65 remaining) [2022-04-18 15:55:44,423 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (44 of 65 remaining) [2022-04-18 15:55:44,423 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (43 of 65 remaining) [2022-04-18 15:55:44,423 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 65 remaining) [2022-04-18 15:55:44,424 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (41 of 65 remaining) [2022-04-18 15:55:44,424 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (40 of 65 remaining) [2022-04-18 15:55:44,424 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (39 of 65 remaining) [2022-04-18 15:55:44,424 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (38 of 65 remaining) [2022-04-18 15:55:44,424 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (37 of 65 remaining) [2022-04-18 15:55:44,424 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (36 of 65 remaining) [2022-04-18 15:55:44,424 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (35 of 65 remaining) [2022-04-18 15:55:44,425 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 65 remaining) [2022-04-18 15:55:44,425 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 65 remaining) [2022-04-18 15:55:44,425 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (32 of 65 remaining) [2022-04-18 15:55:44,425 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 65 remaining) [2022-04-18 15:55:44,425 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 65 remaining) [2022-04-18 15:55:44,425 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 65 remaining) [2022-04-18 15:55:44,425 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 65 remaining) [2022-04-18 15:55:44,426 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 65 remaining) [2022-04-18 15:55:44,426 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 65 remaining) [2022-04-18 15:55:44,426 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 65 remaining) [2022-04-18 15:55:44,426 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 65 remaining) [2022-04-18 15:55:44,426 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (23 of 65 remaining) [2022-04-18 15:55:44,426 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 65 remaining) [2022-04-18 15:55:44,426 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 65 remaining) [2022-04-18 15:55:44,426 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (20 of 65 remaining) [2022-04-18 15:55:44,427 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (19 of 65 remaining) [2022-04-18 15:55:44,427 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 65 remaining) [2022-04-18 15:55:44,427 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 65 remaining) [2022-04-18 15:55:44,427 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 65 remaining) [2022-04-18 15:55:44,427 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 65 remaining) [2022-04-18 15:55:44,428 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 65 remaining) [2022-04-18 15:55:44,428 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 65 remaining) [2022-04-18 15:55:44,428 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 65 remaining) [2022-04-18 15:55:44,428 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 65 remaining) [2022-04-18 15:55:44,428 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 65 remaining) [2022-04-18 15:55:44,428 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 65 remaining) [2022-04-18 15:55:44,428 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (8 of 65 remaining) [2022-04-18 15:55:44,429 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (7 of 65 remaining) [2022-04-18 15:55:44,429 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 65 remaining) [2022-04-18 15:55:44,429 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 65 remaining) [2022-04-18 15:55:44,429 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (4 of 65 remaining) [2022-04-18 15:55:44,429 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (3 of 65 remaining) [2022-04-18 15:55:44,429 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 65 remaining) [2022-04-18 15:55:44,429 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 65 remaining) [2022-04-18 15:55:44,429 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 65 remaining) [2022-04-18 15:55:44,430 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 15:55:44,430 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-18 15:55:44,430 WARN L232 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:55:44,430 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-04-18 15:55:44,476 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:44,479 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:44,479 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 15:55:44,479 INFO L341 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2022-04-18 15:55:44,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 406 places, 434 transitions, 900 flow [2022-04-18 15:55:44,533 INFO L129 PetriNetUnfolder]: 41/484 cut-off events. [2022-04-18 15:55:44,534 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-04-18 15:55:44,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 484 events. 41/484 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2141 event pairs, 0 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 413. Up to 10 conditions per place. [2022-04-18 15:55:44,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 406 places, 434 transitions, 900 flow [2022-04-18 15:55:44,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 406 places, 434 transitions, 900 flow [2022-04-18 15:55:44,553 INFO L129 PetriNetUnfolder]: 2/32 cut-off events. [2022-04-18 15:55:44,553 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:55:44,553 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:44,553 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] [2022-04-18 15:55:44,554 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 77 more)] === [2022-04-18 15:55:44,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:44,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1498836961, now seen corresponding path program 1 times [2022-04-18 15:55:44,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:44,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347673570] [2022-04-18 15:55:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:44,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:44,567 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 15:55:44,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:44,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347673570] [2022-04-18 15:55:44,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347673570] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:44,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:44,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 15:55:44,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362853060] [2022-04-18 15:55:44,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:44,568 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:55:44,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:44,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:55:44,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:55:44,569 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 434 [2022-04-18 15:55:44,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 434 transitions, 900 flow. Second operand has 2 states, 2 states have (on average 333.0) internal successors, (666), 2 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:55:44,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:44,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 434 [2022-04-18 15:55:44,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:47,949 INFO L129 PetriNetUnfolder]: 4560/28173 cut-off events. [2022-04-18 15:55:47,950 INFO L130 PetriNetUnfolder]: For 2401/2401 co-relation queries the response was YES. [2022-04-18 15:55:48,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34611 conditions, 28173 events. 4560/28173 cut-off events. For 2401/2401 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 396425 event pairs, 3630 based on Foata normal form. 6208/30111 useless extension candidates. Maximal degree in co-relation 27816. Up to 5185 conditions per place. [2022-04-18 15:55:48,304 INFO L132 encePairwiseOnDemand]: 368/434 looper letters, 24 selfloop transitions, 0 changer transitions 0/347 dead transitions. [2022-04-18 15:55:48,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 347 transitions, 774 flow [2022-04-18 15:55:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:55:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:55:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 754 transitions. [2022-04-18 15:55:48,312 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.868663594470046 [2022-04-18 15:55:48,312 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 754 transitions. [2022-04-18 15:55:48,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 754 transitions. [2022-04-18 15:55:48,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:48,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 754 transitions. [2022-04-18 15:55:48,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 377.0) internal successors, (754), 2 states have internal predecessors, (754), 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 15:55:48,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 434.0) internal successors, (1302), 3 states have internal predecessors, (1302), 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 15:55:48,315 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 434.0) internal successors, (1302), 3 states have internal predecessors, (1302), 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 15:55:48,315 INFO L186 Difference]: Start difference. First operand has 406 places, 434 transitions, 900 flow. Second operand 2 states and 754 transitions. [2022-04-18 15:55:48,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 347 transitions, 774 flow [2022-04-18 15:55:48,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 347 transitions, 762 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-04-18 15:55:48,320 INFO L242 Difference]: Finished difference. Result has 345 places, 347 transitions, 714 flow [2022-04-18 15:55:48,320 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=714, PETRI_PLACES=345, PETRI_TRANSITIONS=347} [2022-04-18 15:55:48,321 INFO L335 CegarLoopForPetriNet]: 406 programPoint places, -61 predicate places. [2022-04-18 15:55:48,321 INFO L478 AbstractCegarLoop]: Abstraction has has 345 places, 347 transitions, 714 flow [2022-04-18 15:55:48,321 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 333.0) internal successors, (666), 2 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:55:48,321 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:48,322 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] [2022-04-18 15:55:48,322 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 15:55:48,322 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 77 more)] === [2022-04-18 15:55:48,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:48,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1568219231, now seen corresponding path program 1 times [2022-04-18 15:55:48,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:48,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316743373] [2022-04-18 15:55:48,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:48,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:48,335 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 15:55:48,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:48,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316743373] [2022-04-18 15:55:48,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316743373] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:48,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:48,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:55:48,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001716095] [2022-04-18 15:55:48,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:48,336 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:55:48,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:48,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:55:48,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:55:48,338 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 434 [2022-04-18 15:55:48,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 347 transitions, 714 flow. Second operand has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 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 15:55:48,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:48,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 434 [2022-04-18 15:55:48,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand