./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_04-munge_racefree.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_04-munge_racefree.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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:48:59,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:48:59,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:48:59,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:48:59,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:48:59,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:48:59,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:48:59,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:48:59,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:48:59,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:48:59,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:48:59,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:48:59,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:48:59,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:48:59,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:48:59,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:48:59,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:48:59,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:48:59,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:48:59,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:48:59,265 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:48:59,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:48:59,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:48:59,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:48:59,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:48:59,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:48:59,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:48:59,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:48:59,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:48:59,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:48:59,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:48:59,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:48:59,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:48:59,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:48:59,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:48:59,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:48:59,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:48:59,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:48:59,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:48:59,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:48:59,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:48:59,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:48:59,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:48:59,307 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:48:59,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:48:59,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:48:59,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:48:59,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:48:59,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:48:59,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:48:59,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:48:59,309 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:48:59,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:48:59,310 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:48:59,310 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:48:59,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:48:59,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:48:59,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:48:59,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:48:59,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:48:59,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:48:59,311 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:48:59,312 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:48:59,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:48:59,313 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:48:59,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:48:59,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:48:59,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:48:59,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:48:59,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:48:59,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:48:59,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:48:59,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:48:59,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:48:59,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:48:59,314 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:48:59,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:48:59,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:48:59,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2022-04-18 15:48:59,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:48:59,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:48:59,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:48:59,528 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:48:59,530 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:48:59,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2022-04-18 15:48:59,574 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3b8203f5/003af5fbafd34cdab403c91d6446aadf/FLAGd7e44163c [2022-04-18 15:48:59,982 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:48:59,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2022-04-18 15:49:00,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3b8203f5/003af5fbafd34cdab403c91d6446aadf/FLAGd7e44163c [2022-04-18 15:49:00,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3b8203f5/003af5fbafd34cdab403c91d6446aadf [2022-04-18 15:49:00,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:49:00,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:49:00,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:49:00,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:49:00,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:49:00,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:49:00" (1/1) ... [2022-04-18 15:49:00,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516016ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:00, skipping insertion in model container [2022-04-18 15:49:00,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:49:00" (1/1) ... [2022-04-18 15:49:00,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:49:00,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:49:00,288 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_04-munge_racefree.i[30176,30189] [2022-04-18 15:49:00,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:49:00,328 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:49:00,355 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_04-munge_racefree.i[30176,30189] [2022-04-18 15:49:00,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:49:00,394 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:49:00,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:00 WrapperNode [2022-04-18 15:49:00,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:49:00,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:49:00,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:49:00,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:49:00,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:00" (1/1) ... [2022-04-18 15:49:00,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:00" (1/1) ... [2022-04-18 15:49:00,439 INFO L137 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 238 [2022-04-18 15:49:00,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:49:00,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:49:00,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:49:00,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:49:00,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:00" (1/1) ... [2022-04-18 15:49:00,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:00" (1/1) ... [2022-04-18 15:49:00,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:00" (1/1) ... [2022-04-18 15:49:00,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:00" (1/1) ... [2022-04-18 15:49:00,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:00" (1/1) ... [2022-04-18 15:49:00,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:00" (1/1) ... [2022-04-18 15:49:00,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:00" (1/1) ... [2022-04-18 15:49:00,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:49:00,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:49:00,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:49:00,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:49:00,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:00" (1/1) ... [2022-04-18 15:49:00,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:49:00,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:49:00,498 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 15:49:00,506 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 15:49:00,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:49:00,528 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-04-18 15:49:00,528 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-04-18 15:49:00,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:49:00,531 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:49:00,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:49:00,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:49:00,531 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-04-18 15:49:00,531 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-04-18 15:49:00,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:49:00,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:49:00,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:49:00,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:49:00,532 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 15:49:00,612 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:49:00,613 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:49:00,879 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:49:00,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:49:00,898 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2022-04-18 15:49:00,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:49:00 BoogieIcfgContainer [2022-04-18 15:49:00,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:49:00,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:49:00,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:49:00,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:49:00,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:49:00" (1/3) ... [2022-04-18 15:49:00,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23620763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:49:00, skipping insertion in model container [2022-04-18 15:49:00,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:00" (2/3) ... [2022-04-18 15:49:00,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23620763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:49:00, skipping insertion in model container [2022-04-18 15:49:00,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:49:00" (3/3) ... [2022-04-18 15:49:00,907 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2022-04-18 15:49:00,910 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:49:00,911 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:49:00,911 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-04-18 15:49:00,911 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:49:00,995 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-04-18 15:49:01,030 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:01,039 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 15:49:01,040 INFO L341 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-04-18 15:49:01,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 231 places, 258 transitions, 538 flow [2022-04-18 15:49:01,143 INFO L129 PetriNetUnfolder]: 58/476 cut-off events. [2022-04-18 15:49:01,143 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-04-18 15:49:01,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 476 events. 58/476 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2340 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 257. Up to 8 conditions per place. [2022-04-18 15:49:01,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 258 transitions, 538 flow [2022-04-18 15:49:01,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 258 transitions, 538 flow [2022-04-18 15:49:01,185 INFO L129 PetriNetUnfolder]: 5/98 cut-off events. [2022-04-18 15:49:01,185 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:01,186 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:01,186 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 15:49:01,187 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-04-18 15:49:01,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:01,193 INFO L85 PathProgramCache]: Analyzing trace with hash -206665521, now seen corresponding path program 1 times [2022-04-18 15:49:01,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:01,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255901571] [2022-04-18 15:49:01,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:01,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:01,424 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 15:49:01,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:01,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255901571] [2022-04-18 15:49:01,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255901571] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:01,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:01,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:01,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686950908] [2022-04-18 15:49:01,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:01,433 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:01,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:01,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:01,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:01,461 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 258 [2022-04-18 15:49:01,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 258 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 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 15:49:01,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:01,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 258 [2022-04-18 15:49:01,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:01,544 INFO L129 PetriNetUnfolder]: 8/341 cut-off events. [2022-04-18 15:49:01,544 INFO L130 PetriNetUnfolder]: For 27/50 co-relation queries the response was YES. [2022-04-18 15:49:01,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 341 events. 8/341 cut-off events. For 27/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1229 event pairs, 0 based on Foata normal form. 94/401 useless extension candidates. Maximal degree in co-relation 234. Up to 15 conditions per place. [2022-04-18 15:49:01,550 INFO L132 encePairwiseOnDemand]: 229/258 looper letters, 13 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2022-04-18 15:49:01,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 232 transitions, 516 flow [2022-04-18 15:49:01,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2022-04-18 15:49:01,567 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9108527131782945 [2022-04-18 15:49:01,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2022-04-18 15:49:01,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2022-04-18 15:49:01,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:01,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2022-04-18 15:49:01,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 15:49:01,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 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 15:49:01,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 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 15:49:01,595 INFO L186 Difference]: Start difference. First operand has 231 places, 258 transitions, 538 flow. Second operand 3 states and 705 transitions. [2022-04-18 15:49:01,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 232 transitions, 516 flow [2022-04-18 15:49:01,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 232 transitions, 516 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:01,604 INFO L242 Difference]: Finished difference. Result has 232 places, 230 transitions, 490 flow [2022-04-18 15:49:01,606 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=232, PETRI_TRANSITIONS=230} [2022-04-18 15:49:01,610 INFO L335 CegarLoopForPetriNet]: 231 programPoint places, 1 predicate places. [2022-04-18 15:49:01,611 INFO L478 AbstractCegarLoop]: Abstraction has has 232 places, 230 transitions, 490 flow [2022-04-18 15:49:01,612 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 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 15:49:01,612 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:01,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:01,613 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:49:01,614 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-04-18 15:49:01,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:01,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1504860397, now seen corresponding path program 1 times [2022-04-18 15:49:01,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:01,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740537737] [2022-04-18 15:49:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:01,676 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:49:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:01,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:49:01,730 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:49:01,731 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-04-18 15:49:01,733 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2022-04-18 15:49:01,735 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2022-04-18 15:49:01,736 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2022-04-18 15:49:01,736 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2022-04-18 15:49:01,736 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2022-04-18 15:49:01,736 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2022-04-18 15:49:01,737 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2022-04-18 15:49:01,737 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 24 remaining) [2022-04-18 15:49:01,738 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2022-04-18 15:49:01,739 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2022-04-18 15:49:01,742 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2022-04-18 15:49:01,743 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2022-04-18 15:49:01,743 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2022-04-18 15:49:01,744 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2022-04-18 15:49:01,744 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2022-04-18 15:49:01,744 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2022-04-18 15:49:01,744 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2022-04-18 15:49:01,744 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2022-04-18 15:49:01,745 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2022-04-18 15:49:01,745 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2022-04-18 15:49:01,745 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2022-04-18 15:49:01,745 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2022-04-18 15:49:01,746 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2022-04-18 15:49:01,746 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:49:01,752 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 15:49:01,754 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:49:01,754 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:49:01,821 INFO L135 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-04-18 15:49:01,826 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:01,827 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 15:49:01,827 INFO L341 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-04-18 15:49:01,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 363 places, 414 transitions, 876 flow [2022-04-18 15:49:02,064 INFO L129 PetriNetUnfolder]: 197/1425 cut-off events. [2022-04-18 15:49:02,065 INFO L130 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-04-18 15:49:02,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1522 conditions, 1425 events. 197/1425 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9433 event pairs, 1 based on Foata normal form. 0/1169 useless extension candidates. Maximal degree in co-relation 859. Up to 32 conditions per place. [2022-04-18 15:49:02,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 414 transitions, 876 flow [2022-04-18 15:49:02,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 414 transitions, 876 flow [2022-04-18 15:49:02,110 INFO L129 PetriNetUnfolder]: 5/98 cut-off events. [2022-04-18 15:49:02,111 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:02,111 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:02,111 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 15:49:02,111 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-04-18 15:49:02,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:02,112 INFO L85 PathProgramCache]: Analyzing trace with hash -589258418, now seen corresponding path program 1 times [2022-04-18 15:49:02,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:02,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175941157] [2022-04-18 15:49:02,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:02,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:02,172 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 15:49:02,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:02,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175941157] [2022-04-18 15:49:02,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175941157] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:02,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:02,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:02,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653067923] [2022-04-18 15:49:02,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:02,174 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:49:02,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:02,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:49:02,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:49:02,195 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 414 [2022-04-18 15:49:02,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 414 transitions, 876 flow. Second operand has 2 states, 2 states have (on average 350.5) internal successors, (701), 2 states have internal predecessors, (701), 0 states have call successors, (0), 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 15:49:02,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:02,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 414 [2022-04-18 15:49:02,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:02,471 INFO L129 PetriNetUnfolder]: 65/1285 cut-off events. [2022-04-18 15:49:02,472 INFO L130 PetriNetUnfolder]: For 249/342 co-relation queries the response was YES. [2022-04-18 15:49:02,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 1285 events. 65/1285 cut-off events. For 249/342 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8856 event pairs, 1 based on Foata normal form. 790/1934 useless extension candidates. Maximal degree in co-relation 803. Up to 73 conditions per place. [2022-04-18 15:49:02,490 INFO L132 encePairwiseOnDemand]: 366/414 looper letters, 12 selfloop transitions, 0 changer transitions 0/362 dead transitions. [2022-04-18 15:49:02,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 362 transitions, 796 flow [2022-04-18 15:49:02,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:49:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:49:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 760 transitions. [2022-04-18 15:49:02,492 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9178743961352657 [2022-04-18 15:49:02,492 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 760 transitions. [2022-04-18 15:49:02,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 760 transitions. [2022-04-18 15:49:02,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:02,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 760 transitions. [2022-04-18 15:49:02,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 380.0) internal successors, (760), 2 states have internal predecessors, (760), 0 states have call successors, (0), 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 15:49:02,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 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 15:49:02,497 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 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 15:49:02,498 INFO L186 Difference]: Start difference. First operand has 363 places, 414 transitions, 876 flow. Second operand 2 states and 760 transitions. [2022-04-18 15:49:02,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 362 transitions, 796 flow [2022-04-18 15:49:02,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 362 transitions, 796 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:02,505 INFO L242 Difference]: Finished difference. Result has 360 places, 362 transitions, 772 flow [2022-04-18 15:49:02,505 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=772, PETRI_PLACES=360, PETRI_TRANSITIONS=362} [2022-04-18 15:49:02,507 INFO L335 CegarLoopForPetriNet]: 363 programPoint places, -3 predicate places. [2022-04-18 15:49:02,507 INFO L478 AbstractCegarLoop]: Abstraction has has 360 places, 362 transitions, 772 flow [2022-04-18 15:49:02,508 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 350.5) internal successors, (701), 2 states have internal predecessors, (701), 0 states have call successors, (0), 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 15:49:02,508 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:02,508 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 15:49:02,508 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:49:02,508 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-04-18 15:49:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:02,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1898254415, now seen corresponding path program 1 times [2022-04-18 15:49:02,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:02,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785522401] [2022-04-18 15:49:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:02,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:02,558 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 15:49:02,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:02,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785522401] [2022-04-18 15:49:02,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785522401] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:02,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:02,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:02,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540234694] [2022-04-18 15:49:02,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:02,560 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:02,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:02,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:02,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:02,562 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 414 [2022-04-18 15:49:02,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 362 transitions, 772 flow. Second operand has 3 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 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 15:49:02,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:02,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 414 [2022-04-18 15:49:02,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:02,787 INFO L129 PetriNetUnfolder]: 60/1125 cut-off events. [2022-04-18 15:49:02,788 INFO L130 PetriNetUnfolder]: For 250/396 co-relation queries the response was YES. [2022-04-18 15:49:02,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 1125 events. 60/1125 cut-off events. For 250/396 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7249 event pairs, 2 based on Foata normal form. 2/1007 useless extension candidates. Maximal degree in co-relation 1294. Up to 80 conditions per place. [2022-04-18 15:49:02,808 INFO L132 encePairwiseOnDemand]: 411/414 looper letters, 21 selfloop transitions, 2 changer transitions 0/366 dead transitions. [2022-04-18 15:49:02,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 366 transitions, 826 flow [2022-04-18 15:49:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1053 transitions. [2022-04-18 15:49:02,811 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2022-04-18 15:49:02,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1053 transitions. [2022-04-18 15:49:02,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1053 transitions. [2022-04-18 15:49:02,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:02,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1053 transitions. [2022-04-18 15:49:02,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 351.0) internal successors, (1053), 3 states have internal predecessors, (1053), 0 states have call successors, (0), 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 15:49:02,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 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 15:49:02,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 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 15:49:02,819 INFO L186 Difference]: Start difference. First operand has 360 places, 362 transitions, 772 flow. Second operand 3 states and 1053 transitions. [2022-04-18 15:49:02,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 366 transitions, 826 flow [2022-04-18 15:49:02,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 366 transitions, 826 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:02,826 INFO L242 Difference]: Finished difference. Result has 363 places, 363 transitions, 784 flow [2022-04-18 15:49:02,826 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=784, PETRI_PLACES=363, PETRI_TRANSITIONS=363} [2022-04-18 15:49:02,828 INFO L335 CegarLoopForPetriNet]: 363 programPoint places, 0 predicate places. [2022-04-18 15:49:02,828 INFO L478 AbstractCegarLoop]: Abstraction has has 363 places, 363 transitions, 784 flow [2022-04-18 15:49:02,829 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 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 15:49:02,829 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:02,829 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, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:02,829 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:49:02,829 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr4ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-04-18 15:49:02,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:02,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1811770177, now seen corresponding path program 1 times [2022-04-18 15:49:02,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:02,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610240593] [2022-04-18 15:49:02,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:02,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:02,879 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 15:49:02,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:02,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610240593] [2022-04-18 15:49:02,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610240593] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:02,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:02,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:02,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378385738] [2022-04-18 15:49:02,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:02,882 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:02,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:02,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:02,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:02,884 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 414 [2022-04-18 15:49:02,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 363 transitions, 784 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 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 15:49:02,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:02,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 414 [2022-04-18 15:49:02,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand