./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.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/goblint-regression/28-race_reach_61-invariant_racing.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 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:50:21,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:50:21,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:50:21,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:50:21,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:50:21,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:50:21,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:50:21,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:50:21,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:50:21,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:50:21,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:50:21,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:50:21,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:50:21,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:50:21,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:50:21,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:50:21,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:50:21,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:50:21,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:50:21,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:50:21,412 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:50:21,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:50:21,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:50:21,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:50:21,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:50:21,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:50:21,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:50:21,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:50:21,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:50:21,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:50:21,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:50:21,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:50:21,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:50:21,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:50:21,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:50:21,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:50:21,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:50:21,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:50:21,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:50:21,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:50:21,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:50:21,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:50:21,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:50:21,463 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:50:21,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:50:21,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:50:21,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:50:21,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:50:21,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:50:21,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:50:21,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:50:21,466 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:50:21,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:50:21,467 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:50:21,467 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:50:21,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:50:21,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:50:21,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:50:21,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:50:21,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:50:21,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:50:21,469 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:50:21,470 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:50:21,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:50:21,471 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:50:21,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:50:21,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:50:21,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:50:21,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:50:21,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:50:21,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:50:21,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:50:21,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:50:21,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:50:21,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:50:21,473 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:50:21,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:50:21,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:50:21,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 [2022-04-18 15:50:21,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:50:21,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:50:21,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:50:21,732 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:50:21,733 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:50:21,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2022-04-18 15:50:21,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/064c4b40b/3dd8303a2a3c4838a1b953301b88b547/FLAG671d29e82 [2022-04-18 15:50:22,331 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:50:22,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2022-04-18 15:50:22,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/064c4b40b/3dd8303a2a3c4838a1b953301b88b547/FLAG671d29e82 [2022-04-18 15:50:22,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/064c4b40b/3dd8303a2a3c4838a1b953301b88b547 [2022-04-18 15:50:22,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:50:22,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:50:22,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:50:22,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:50:22,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:50:22,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:50:22" (1/1) ... [2022-04-18 15:50:22,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c77bca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:22, skipping insertion in model container [2022-04-18 15:50:22,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:50:22" (1/1) ... [2022-04-18 15:50:22,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:50:22,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:50:23,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2022-04-18 15:50:23,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:50:23,155 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:50:23,188 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2022-04-18 15:50:23,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:50:23,232 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:50:23,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:23 WrapperNode [2022-04-18 15:50:23,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:50:23,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:50:23,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:50:23,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:50:23,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:23" (1/1) ... [2022-04-18 15:50:23,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:23" (1/1) ... [2022-04-18 15:50:23,289 INFO L137 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2022-04-18 15:50:23,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:50:23,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:50:23,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:50:23,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:50:23,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:23" (1/1) ... [2022-04-18 15:50:23,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:23" (1/1) ... [2022-04-18 15:50:23,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:23" (1/1) ... [2022-04-18 15:50:23,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:23" (1/1) ... [2022-04-18 15:50:23,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:23" (1/1) ... [2022-04-18 15:50:23,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:23" (1/1) ... [2022-04-18 15:50:23,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:23" (1/1) ... [2022-04-18 15:50:23,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:50:23,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:50:23,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:50:23,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:50:23,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:23" (1/1) ... [2022-04-18 15:50:23,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:50:23,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:23,343 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 15:50:23,355 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 15:50:23,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:50:23,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:50:23,396 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:50:23,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:50:23,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:50:23,396 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 15:50:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 15:50:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:50:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:50:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:50:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:50:23,398 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 15:50:23,515 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:50:23,517 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:50:23,753 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:50:23,761 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:50:23,761 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-04-18 15:50:23,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:50:23 BoogieIcfgContainer [2022-04-18 15:50:23,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:50:23,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:50:23,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:50:23,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:50:23,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:50:22" (1/3) ... [2022-04-18 15:50:23,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676e783c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:50:23, skipping insertion in model container [2022-04-18 15:50:23,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:23" (2/3) ... [2022-04-18 15:50:23,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676e783c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:50:23, skipping insertion in model container [2022-04-18 15:50:23,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:50:23" (3/3) ... [2022-04-18 15:50:23,770 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2022-04-18 15:50:23,774 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:50:23,775 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:50:23,775 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-04-18 15:50:23,775 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:50:23,830 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 15:50:23,868 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:23,873 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 15:50:23,874 INFO L341 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-04-18 15:50:23,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 157 places, 173 transitions, 354 flow [2022-04-18 15:50:23,981 INFO L129 PetriNetUnfolder]: 30/255 cut-off events. [2022-04-18 15:50:23,982 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:50:23,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 255 events. 30/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1029 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 137. Up to 6 conditions per place. [2022-04-18 15:50:23,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 173 transitions, 354 flow [2022-04-18 15:50:24,002 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 173 transitions, 354 flow [2022-04-18 15:50:24,026 INFO L129 PetriNetUnfolder]: 3/54 cut-off events. [2022-04-18 15:50:24,027 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:50:24,027 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:24,028 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 15:50:24,028 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-04-18 15:50:24,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:24,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1916847943, now seen corresponding path program 1 times [2022-04-18 15:50:24,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:24,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524671099] [2022-04-18 15:50:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:24,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:24,316 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 15:50:24,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:24,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524671099] [2022-04-18 15:50:24,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524671099] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:24,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:24,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:24,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936262512] [2022-04-18 15:50:24,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:24,330 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:24,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:24,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:24,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:24,371 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 173 [2022-04-18 15:50:24,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 173 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 15:50:24,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:24,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 173 [2022-04-18 15:50:24,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:24,450 INFO L129 PetriNetUnfolder]: 1/174 cut-off events. [2022-04-18 15:50:24,451 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 15:50:24,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 174 events. 1/174 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 181 event pairs, 0 based on Foata normal form. 25/182 useless extension candidates. Maximal degree in co-relation 124. Up to 7 conditions per place. [2022-04-18 15:50:24,455 INFO L132 encePairwiseOnDemand]: 153/173 looper letters, 9 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2022-04-18 15:50:24,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 157 transitions, 344 flow [2022-04-18 15:50:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2022-04-18 15:50:24,476 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9132947976878613 [2022-04-18 15:50:24,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2022-04-18 15:50:24,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2022-04-18 15:50:24,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:24,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2022-04-18 15:50:24,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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 15:50:24,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 15:50:24,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 15:50:24,496 INFO L186 Difference]: Start difference. First operand has 157 places, 173 transitions, 354 flow. Second operand 3 states and 474 transitions. [2022-04-18 15:50:24,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 157 transitions, 344 flow [2022-04-18 15:50:24,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 157 transitions, 344 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:24,509 INFO L242 Difference]: Finished difference. Result has 159 places, 155 transitions, 326 flow [2022-04-18 15:50:24,511 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=159, PETRI_TRANSITIONS=155} [2022-04-18 15:50:24,515 INFO L335 CegarLoopForPetriNet]: 157 programPoint places, 2 predicate places. [2022-04-18 15:50:24,515 INFO L478 AbstractCegarLoop]: Abstraction has has 159 places, 155 transitions, 326 flow [2022-04-18 15:50:24,516 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 15:50:24,517 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:24,517 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] [2022-04-18 15:50:24,517 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:50:24,517 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-04-18 15:50:24,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:24,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1786471726, now seen corresponding path program 1 times [2022-04-18 15:50:24,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:24,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895128181] [2022-04-18 15:50:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:24,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:24,617 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 15:50:24,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:24,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895128181] [2022-04-18 15:50:24,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895128181] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:24,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:24,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:24,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834204440] [2022-04-18 15:50:24,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:24,623 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:24,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:24,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:24,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:24,627 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 173 [2022-04-18 15:50:24,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 155 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 15:50:24,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:24,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 173 [2022-04-18 15:50:24,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:24,893 INFO L129 PetriNetUnfolder]: 235/1608 cut-off events. [2022-04-18 15:50:24,894 INFO L130 PetriNetUnfolder]: For 14/17 co-relation queries the response was YES. [2022-04-18 15:50:24,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 1608 events. 235/1608 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11078 event pairs, 90 based on Foata normal form. 1/1398 useless extension candidates. Maximal degree in co-relation 2106. Up to 284 conditions per place. [2022-04-18 15:50:24,905 INFO L132 encePairwiseOnDemand]: 151/173 looper letters, 41 selfloop transitions, 16 changer transitions 0/180 dead transitions. [2022-04-18 15:50:24,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 180 transitions, 493 flow [2022-04-18 15:50:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2022-04-18 15:50:24,908 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8323699421965318 [2022-04-18 15:50:24,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2022-04-18 15:50:24,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2022-04-18 15:50:24,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:24,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2022-04-18 15:50:24,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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 15:50:24,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 15:50:24,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 15:50:24,912 INFO L186 Difference]: Start difference. First operand has 159 places, 155 transitions, 326 flow. Second operand 3 states and 432 transitions. [2022-04-18 15:50:24,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 180 transitions, 493 flow [2022-04-18 15:50:24,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 180 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:50:24,920 INFO L242 Difference]: Finished difference. Result has 161 places, 171 transitions, 462 flow [2022-04-18 15:50:24,920 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=462, PETRI_PLACES=161, PETRI_TRANSITIONS=171} [2022-04-18 15:50:24,922 INFO L335 CegarLoopForPetriNet]: 157 programPoint places, 4 predicate places. [2022-04-18 15:50:24,922 INFO L478 AbstractCegarLoop]: Abstraction has has 161 places, 171 transitions, 462 flow [2022-04-18 15:50:24,922 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 15:50:24,923 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:24,923 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:24,924 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:50:24,924 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-04-18 15:50:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash -364949622, now seen corresponding path program 1 times [2022-04-18 15:50:24,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:24,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942423661] [2022-04-18 15:50:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:24,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:24,975 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:50:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:25,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:50:25,033 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:50:25,034 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-04-18 15:50:25,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-04-18 15:50:25,037 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-04-18 15:50:25,038 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-04-18 15:50:25,038 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-04-18 15:50:25,039 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-04-18 15:50:25,039 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-04-18 15:50:25,039 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-04-18 15:50:25,040 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-04-18 15:50:25,040 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-04-18 15:50:25,040 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-04-18 15:50:25,040 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-04-18 15:50:25,040 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-04-18 15:50:25,041 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-04-18 15:50:25,041 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-04-18 15:50:25,045 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-04-18 15:50:25,045 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-04-18 15:50:25,045 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:50:25,049 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 15:50:25,051 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:50:25,051 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:50:25,076 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 15:50:25,079 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:25,079 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 15:50:25,080 INFO L341 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-04-18 15:50:25,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 203 places, 225 transitions, 468 flow [2022-04-18 15:50:25,124 INFO L129 PetriNetUnfolder]: 51/420 cut-off events. [2022-04-18 15:50:25,124 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 15:50:25,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 420 events. 51/420 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1906 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 257. Up to 9 conditions per place. [2022-04-18 15:50:25,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 225 transitions, 468 flow [2022-04-18 15:50:25,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 225 transitions, 468 flow [2022-04-18 15:50:25,137 INFO L129 PetriNetUnfolder]: 3/56 cut-off events. [2022-04-18 15:50:25,137 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:50:25,138 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:25,138 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 15:50:25,138 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1511714312, now seen corresponding path program 1 times [2022-04-18 15:50:25,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:25,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545302074] [2022-04-18 15:50:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:25,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:25,169 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 15:50:25,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:25,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545302074] [2022-04-18 15:50:25,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545302074] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:25,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:25,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:25,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087627647] [2022-04-18 15:50:25,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:25,171 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:25,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:25,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:25,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:25,173 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 225 [2022-04-18 15:50:25,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 225 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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 15:50:25,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:25,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 225 [2022-04-18 15:50:25,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:25,271 INFO L129 PetriNetUnfolder]: 4/320 cut-off events. [2022-04-18 15:50:25,271 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-04-18 15:50:25,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 320 events. 4/320 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 803 event pairs, 0 based on Foata normal form. 68/354 useless extension candidates. Maximal degree in co-relation 219. Up to 16 conditions per place. [2022-04-18 15:50:25,277 INFO L132 encePairwiseOnDemand]: 199/225 looper letters, 13 selfloop transitions, 2 changer transitions 0/205 dead transitions. [2022-04-18 15:50:25,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 205 transitions, 458 flow [2022-04-18 15:50:25,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:25,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:25,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 616 transitions. [2022-04-18 15:50:25,279 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9125925925925926 [2022-04-18 15:50:25,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 616 transitions. [2022-04-18 15:50:25,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 616 transitions. [2022-04-18 15:50:25,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:25,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 616 transitions. [2022-04-18 15:50:25,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 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 15:50:25,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 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 15:50:25,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 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 15:50:25,284 INFO L186 Difference]: Start difference. First operand has 203 places, 225 transitions, 468 flow. Second operand 3 states and 616 transitions. [2022-04-18 15:50:25,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 205 transitions, 458 flow [2022-04-18 15:50:25,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 205 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:25,289 INFO L242 Difference]: Finished difference. Result has 205 places, 202 transitions, 432 flow [2022-04-18 15:50:25,289 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=205, PETRI_TRANSITIONS=202} [2022-04-18 15:50:25,290 INFO L335 CegarLoopForPetriNet]: 203 programPoint places, 2 predicate places. [2022-04-18 15:50:25,290 INFO L478 AbstractCegarLoop]: Abstraction has has 205 places, 202 transitions, 432 flow [2022-04-18 15:50:25,291 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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 15:50:25,291 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:25,291 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] [2022-04-18 15:50:25,292 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:50:25,292 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:25,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:25,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2016901217, now seen corresponding path program 1 times [2022-04-18 15:50:25,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:25,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344507035] [2022-04-18 15:50:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:25,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:25,347 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 15:50:25,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:25,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344507035] [2022-04-18 15:50:25,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344507035] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:25,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:25,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:25,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092257657] [2022-04-18 15:50:25,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:25,348 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:25,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:25,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:25,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:25,350 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 225 [2022-04-18 15:50:25,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 202 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:25,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:25,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 225 [2022-04-18 15:50:25,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:29,208 INFO L129 PetriNetUnfolder]: 9957/36270 cut-off events. [2022-04-18 15:50:29,208 INFO L130 PetriNetUnfolder]: For 491/633 co-relation queries the response was YES. [2022-04-18 15:50:29,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52690 conditions, 36270 events. 9957/36270 cut-off events. For 491/633 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 453049 event pairs, 4034 based on Foata normal form. 23/30251 useless extension candidates. Maximal degree in co-relation 52640. Up to 9082 conditions per place. [2022-04-18 15:50:29,499 INFO L132 encePairwiseOnDemand]: 192/225 looper letters, 64 selfloop transitions, 24 changer transitions 0/241 dead transitions. [2022-04-18 15:50:29,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 241 transitions, 697 flow [2022-04-18 15:50:29,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:29,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2022-04-18 15:50:29,502 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8192592592592592 [2022-04-18 15:50:29,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2022-04-18 15:50:29,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2022-04-18 15:50:29,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:29,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2022-04-18 15:50:29,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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 15:50:29,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 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 15:50:29,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 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 15:50:29,507 INFO L186 Difference]: Start difference. First operand has 205 places, 202 transitions, 432 flow. Second operand 3 states and 553 transitions. [2022-04-18 15:50:29,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 241 transitions, 697 flow [2022-04-18 15:50:29,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 241 transitions, 695 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:29,515 INFO L242 Difference]: Finished difference. Result has 208 places, 226 transitions, 640 flow [2022-04-18 15:50:29,515 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=640, PETRI_PLACES=208, PETRI_TRANSITIONS=226} [2022-04-18 15:50:29,516 INFO L335 CegarLoopForPetriNet]: 203 programPoint places, 5 predicate places. [2022-04-18 15:50:29,516 INFO L478 AbstractCegarLoop]: Abstraction has has 208 places, 226 transitions, 640 flow [2022-04-18 15:50:29,517 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:29,517 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:29,517 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:29,517 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:50:29,518 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:29,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:29,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1621131938, now seen corresponding path program 1 times [2022-04-18 15:50:29,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:29,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968678427] [2022-04-18 15:50:29,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:29,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:29,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:29,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:29,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968678427] [2022-04-18 15:50:29,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968678427] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:29,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372514259] [2022-04-18 15:50:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:29,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:29,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:29,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:50:29,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-18 15:50:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:29,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 15:50:29,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:50:29,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:50:29,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372514259] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:29,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:50:29,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-04-18 15:50:29,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857205650] [2022-04-18 15:50:29,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:29,834 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:29,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:29,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:29,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:50:29,836 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 225 [2022-04-18 15:50:29,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 226 transitions, 640 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:29,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:29,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 225 [2022-04-18 15:50:29,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:33,465 INFO L129 PetriNetUnfolder]: 12218/42983 cut-off events. [2022-04-18 15:50:33,465 INFO L130 PetriNetUnfolder]: For 16810/19059 co-relation queries the response was YES. [2022-04-18 15:50:33,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80741 conditions, 42983 events. 12218/42983 cut-off events. For 16810/19059 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 543544 event pairs, 5899 based on Foata normal form. 107/37983 useless extension candidates. Maximal degree in co-relation 77650. Up to 17812 conditions per place. [2022-04-18 15:50:33,736 INFO L132 encePairwiseOnDemand]: 211/225 looper letters, 100 selfloop transitions, 24 changer transitions 0/274 dead transitions. [2022-04-18 15:50:33,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 274 transitions, 1092 flow [2022-04-18 15:50:33,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2022-04-18 15:50:33,739 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7881481481481482 [2022-04-18 15:50:33,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2022-04-18 15:50:33,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2022-04-18 15:50:33,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:33,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2022-04-18 15:50:33,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 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 15:50:33,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 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 15:50:33,743 INFO L186 Difference]: Start difference. First operand has 208 places, 226 transitions, 640 flow. Second operand 3 states and 532 transitions. [2022-04-18 15:50:33,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 274 transitions, 1092 flow [2022-04-18 15:50:33,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 274 transitions, 1012 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:50:33,776 INFO L242 Difference]: Finished difference. Result has 210 places, 248 transitions, 818 flow [2022-04-18 15:50:33,777 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=818, PETRI_PLACES=210, PETRI_TRANSITIONS=248} [2022-04-18 15:50:33,780 INFO L335 CegarLoopForPetriNet]: 203 programPoint places, 7 predicate places. [2022-04-18 15:50:33,780 INFO L478 AbstractCegarLoop]: Abstraction has has 210 places, 248 transitions, 818 flow [2022-04-18 15:50:33,781 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,781 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:33,781 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:33,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-18 15:50:33,995 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-04-18 15:50:33,996 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:33,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:33,996 INFO L85 PathProgramCache]: Analyzing trace with hash 83973040, now seen corresponding path program 1 times [2022-04-18 15:50:33,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:33,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859113759] [2022-04-18 15:50:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:33,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:34,046 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 15:50:34,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:34,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859113759] [2022-04-18 15:50:34,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859113759] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:34,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:34,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:34,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573382358] [2022-04-18 15:50:34,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:34,051 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:34,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:34,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:34,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:34,053 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 225 [2022-04-18 15:50:34,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 248 transitions, 818 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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 15:50:34,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:34,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 225 [2022-04-18 15:50:34,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:36,214 INFO L129 PetriNetUnfolder]: 5558/27370 cut-off events. [2022-04-18 15:50:36,214 INFO L130 PetriNetUnfolder]: For 5546/6487 co-relation queries the response was YES. [2022-04-18 15:50:36,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44435 conditions, 27370 events. 5558/27370 cut-off events. For 5546/6487 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 356528 event pairs, 2543 based on Foata normal form. 133/24138 useless extension candidates. Maximal degree in co-relation 42500. Up to 4842 conditions per place. [2022-04-18 15:50:36,438 INFO L132 encePairwiseOnDemand]: 214/225 looper letters, 28 selfloop transitions, 9 changer transitions 0/261 dead transitions. [2022-04-18 15:50:36,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 261 transitions, 920 flow [2022-04-18 15:50:36,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 576 transitions. [2022-04-18 15:50:36,441 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8533333333333334 [2022-04-18 15:50:36,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 576 transitions. [2022-04-18 15:50:36,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 576 transitions. [2022-04-18 15:50:36,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:36,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 576 transitions. [2022-04-18 15:50:36,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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 15:50:36,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 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 15:50:36,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 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 15:50:36,448 INFO L186 Difference]: Start difference. First operand has 210 places, 248 transitions, 818 flow. Second operand 3 states and 576 transitions. [2022-04-18 15:50:36,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 261 transitions, 920 flow [2022-04-18 15:50:36,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 261 transitions, 872 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:50:36,472 INFO L242 Difference]: Finished difference. Result has 211 places, 253 transitions, 830 flow [2022-04-18 15:50:36,473 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=830, PETRI_PLACES=211, PETRI_TRANSITIONS=253} [2022-04-18 15:50:36,474 INFO L335 CegarLoopForPetriNet]: 203 programPoint places, 8 predicate places. [2022-04-18 15:50:36,474 INFO L478 AbstractCegarLoop]: Abstraction has has 211 places, 253 transitions, 830 flow [2022-04-18 15:50:36,475 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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 15:50:36,475 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:36,475 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:36,476 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:50:36,477 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:36,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:36,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1644990423, now seen corresponding path program 1 times [2022-04-18 15:50:36,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:36,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407354028] [2022-04-18 15:50:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:36,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:36,497 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:50:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:36,526 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:50:36,526 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:50:36,526 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-04-18 15:50:36,527 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-04-18 15:50:36,527 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-04-18 15:50:36,527 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-04-18 15:50:36,527 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-04-18 15:50:36,529 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-04-18 15:50:36,529 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-04-18 15:50:36,529 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-04-18 15:50:36,529 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-04-18 15:50:36,530 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-04-18 15:50:36,530 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-04-18 15:50:36,530 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-04-18 15:50:36,530 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-04-18 15:50:36,530 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-04-18 15:50:36,531 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-04-18 15:50:36,531 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-04-18 15:50:36,531 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-04-18 15:50:36,531 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-04-18 15:50:36,531 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-04-18 15:50:36,531 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-04-18 15:50:36,532 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-04-18 15:50:36,532 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-04-18 15:50:36,532 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:50:36,533 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-18 15:50:36,533 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:50:36,533 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:50:36,570 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 15:50:36,572 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:36,573 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:50:36,573 INFO L341 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-04-18 15:50:36,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 249 places, 277 transitions, 584 flow [2022-04-18 15:50:36,729 INFO L129 PetriNetUnfolder]: 77/630 cut-off events. [2022-04-18 15:50:36,729 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 15:50:36,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 630 events. 77/630 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3017 event pairs, 1 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 428. Up to 16 conditions per place. [2022-04-18 15:50:36,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 277 transitions, 584 flow [2022-04-18 15:50:36,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 277 transitions, 584 flow [2022-04-18 15:50:36,752 INFO L129 PetriNetUnfolder]: 3/54 cut-off events. [2022-04-18 15:50:36,752 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:50:36,752 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:36,753 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 15:50:36,753 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:36,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:36,753 INFO L85 PathProgramCache]: Analyzing trace with hash -981819938, now seen corresponding path program 1 times [2022-04-18 15:50:36,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:36,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498705170] [2022-04-18 15:50:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:36,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:36,778 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 15:50:36,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:36,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498705170] [2022-04-18 15:50:36,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498705170] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:36,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:36,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:36,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345041827] [2022-04-18 15:50:36,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:36,781 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:50:36,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:36,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:50:36,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:50:36,782 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 277 [2022-04-18 15:50:36,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 277 transitions, 584 flow. Second operand has 2 states, 2 states have (on average 241.5) internal successors, (483), 2 states have internal predecessors, (483), 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 15:50:36,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:36,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 277 [2022-04-18 15:50:36,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:36,858 INFO L129 PetriNetUnfolder]: 11/560 cut-off events. [2022-04-18 15:50:36,858 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-04-18 15:50:36,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 560 events. 11/560 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2144 event pairs, 1 based on Foata normal form. 126/624 useless extension candidates. Maximal degree in co-relation 385. Up to 16 conditions per place. [2022-04-18 15:50:36,867 INFO L132 encePairwiseOnDemand]: 248/277 looper letters, 6 selfloop transitions, 0 changer transitions 0/247 dead transitions. [2022-04-18 15:50:36,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 247 transitions, 536 flow [2022-04-18 15:50:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:50:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:50:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 517 transitions. [2022-04-18 15:50:36,869 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9332129963898917 [2022-04-18 15:50:36,870 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 517 transitions. [2022-04-18 15:50:36,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 517 transitions. [2022-04-18 15:50:36,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:36,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 517 transitions. [2022-04-18 15:50:36,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 258.5) internal successors, (517), 2 states have internal predecessors, (517), 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 15:50:36,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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 15:50:36,874 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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 15:50:36,874 INFO L186 Difference]: Start difference. First operand has 249 places, 277 transitions, 584 flow. Second operand 2 states and 517 transitions. [2022-04-18 15:50:36,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 247 transitions, 536 flow [2022-04-18 15:50:36,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 247 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:36,879 INFO L242 Difference]: Finished difference. Result has 249 places, 247 transitions, 524 flow [2022-04-18 15:50:36,879 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=524, PETRI_PLACES=249, PETRI_TRANSITIONS=247} [2022-04-18 15:50:36,881 INFO L335 CegarLoopForPetriNet]: 249 programPoint places, 0 predicate places. [2022-04-18 15:50:36,881 INFO L478 AbstractCegarLoop]: Abstraction has has 249 places, 247 transitions, 524 flow [2022-04-18 15:50:36,881 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 241.5) internal successors, (483), 2 states have internal predecessors, (483), 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 15:50:36,881 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:36,882 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 15:50:36,882 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:50:36,882 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:36,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:36,883 INFO L85 PathProgramCache]: Analyzing trace with hash -953190787, now seen corresponding path program 1 times [2022-04-18 15:50:36,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:36,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740996084] [2022-04-18 15:50:36,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:36,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:36,915 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 15:50:36,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:36,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740996084] [2022-04-18 15:50:36,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740996084] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:36,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:36,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:36,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100351700] [2022-04-18 15:50:36,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:36,916 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:36,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:36,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:36,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:36,918 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 277 [2022-04-18 15:50:36,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 247 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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 15:50:36,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:36,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 277 [2022-04-18 15:50:36,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:36,999 INFO L129 PetriNetUnfolder]: 10/509 cut-off events. [2022-04-18 15:50:37,000 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-04-18 15:50:37,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 509 events. 10/509 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1781 event pairs, 1 based on Foata normal form. 0/454 useless extension candidates. Maximal degree in co-relation 567. Up to 30 conditions per place. [2022-04-18 15:50:37,008 INFO L132 encePairwiseOnDemand]: 274/277 looper letters, 15 selfloop transitions, 2 changer transitions 0/251 dead transitions. [2022-04-18 15:50:37,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 251 transitions, 566 flow [2022-04-18 15:50:37,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 720 transitions. [2022-04-18 15:50:37,011 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8664259927797834 [2022-04-18 15:50:37,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 720 transitions. [2022-04-18 15:50:37,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 720 transitions. [2022-04-18 15:50:37,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:37,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 720 transitions. [2022-04-18 15:50:37,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 15:50:37,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 15:50:37,015 INFO L186 Difference]: Start difference. First operand has 249 places, 247 transitions, 524 flow. Second operand 3 states and 720 transitions. [2022-04-18 15:50:37,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 251 transitions, 566 flow [2022-04-18 15:50:37,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 251 transitions, 566 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:37,020 INFO L242 Difference]: Finished difference. Result has 252 places, 248 transitions, 536 flow [2022-04-18 15:50:37,020 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=536, PETRI_PLACES=252, PETRI_TRANSITIONS=248} [2022-04-18 15:50:37,022 INFO L335 CegarLoopForPetriNet]: 249 programPoint places, 3 predicate places. [2022-04-18 15:50:37,022 INFO L478 AbstractCegarLoop]: Abstraction has has 252 places, 248 transitions, 536 flow [2022-04-18 15:50:37,022 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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 15:50:37,022 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:37,023 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] [2022-04-18 15:50:37,023 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:50:37,023 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:37,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:37,023 INFO L85 PathProgramCache]: Analyzing trace with hash 431837704, now seen corresponding path program 1 times [2022-04-18 15:50:37,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:37,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949881896] [2022-04-18 15:50:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:37,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:37,046 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 15:50:37,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:37,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949881896] [2022-04-18 15:50:37,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949881896] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:37,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:37,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:37,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214838791] [2022-04-18 15:50:37,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:37,047 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:37,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:37,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:37,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:37,050 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 277 [2022-04-18 15:50:37,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 248 transitions, 536 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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 15:50:37,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:37,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 277 [2022-04-18 15:50:37,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand