./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_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 db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:33:07,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:33:07,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:33:07,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:33:07,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:33:07,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:33:07,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:33:07,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:33:07,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:33:07,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:33:07,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:33:07,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:33:07,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:33:07,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:33:07,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:33:07,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:33:07,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:33:07,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:33:07,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:33:07,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:33:07,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:33:07,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:33:07,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:33:07,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:33:07,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:33:07,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:33:07,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:33:07,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:33:07,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:33:07,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:33:07,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:33:07,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:33:07,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:33:07,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:33:07,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:33:07,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:33:07,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:33:07,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:33:07,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:33:07,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:33:07,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:33:07,559 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:33:07,593 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:33:07,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:33:07,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:33:07,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:33:07,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:33:07,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:33:07,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:33:07,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:33:07,597 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:33:07,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:33:07,598 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:33:07,598 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:33:07,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:33:07,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:33:07,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:33:07,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:33:07,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:33:07,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:33:07,600 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:33:07,600 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:33:07,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:33:07,600 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:33:07,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:33:07,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:33:07,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:33:07,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:33:07,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:33:07,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:33:07,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:33:07,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:33:07,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:33:07,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:33:07,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:33:07,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:33:07,603 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:33:07,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:33:07,603 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:33:07,603 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:33:07,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:33:07,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:33:07,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:33:07,931 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:33:07,932 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:33:07,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-29 18:33:09,099 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:33:09,378 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:33:09,379 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-29 18:33:09,405 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda8e7e3c/8107e28974ad447e96c12e1549a817fc/FLAG3c04a316f [2023-08-29 18:33:09,417 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda8e7e3c/8107e28974ad447e96c12e1549a817fc [2023-08-29 18:33:09,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:33:09,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:33:09,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:33:09,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:33:09,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:33:09,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:33:09" (1/1) ... [2023-08-29 18:33:09,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6653d649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:09, skipping insertion in model container [2023-08-29 18:33:09,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:33:09" (1/1) ... [2023-08-29 18:33:09,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:33:09,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:33:09,837 WARN L247 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_86-lists_racing.i[47038,47051] [2023-08-29 18:33:09,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:33:09,978 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:33:10,017 WARN L247 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_86-lists_racing.i[47038,47051] [2023-08-29 18:33:10,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:33:10,114 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:33:10,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:10 WrapperNode [2023-08-29 18:33:10,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:33:10,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:33:10,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:33:10,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:33:10,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:10" (1/1) ... [2023-08-29 18:33:10,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:10" (1/1) ... [2023-08-29 18:33:10,203 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 345 [2023-08-29 18:33:10,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:33:10,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:33:10,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:33:10,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:33:10,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:10" (1/1) ... [2023-08-29 18:33:10,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:10" (1/1) ... [2023-08-29 18:33:10,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:10" (1/1) ... [2023-08-29 18:33:10,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:10" (1/1) ... [2023-08-29 18:33:10,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:10" (1/1) ... [2023-08-29 18:33:10,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:10" (1/1) ... [2023-08-29 18:33:10,247 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:10" (1/1) ... [2023-08-29 18:33:10,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:10" (1/1) ... [2023-08-29 18:33:10,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:33:10,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:33:10,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:33:10,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:33:10,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:10" (1/1) ... [2023-08-29 18:33:10,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:33:10,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:33:10,305 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) [2023-08-29 18:33:10,335 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 [2023-08-29 18:33:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:33:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 18:33:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 18:33:10,345 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 18:33:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:33:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:33:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 18:33:10,346 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 18:33:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:33:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:33:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 18:33:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:33:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 18:33:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:33:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:33:10,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:33:10,348 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:33:10,573 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:33:10,574 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:33:11,006 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:33:11,014 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:33:11,014 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-29 18:33:11,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:33:11 BoogieIcfgContainer [2023-08-29 18:33:11,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:33:11,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:33:11,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:33:11,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:33:11,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:33:09" (1/3) ... [2023-08-29 18:33:11,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:33:11, skipping insertion in model container [2023-08-29 18:33:11,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:33:10" (2/3) ... [2023-08-29 18:33:11,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:33:11, skipping insertion in model container [2023-08-29 18:33:11,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:33:11" (3/3) ... [2023-08-29 18:33:11,023 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-08-29 18:33:11,031 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:33:11,040 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:33:11,040 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-08-29 18:33:11,040 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:33:11,186 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 18:33:11,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 364 transitions, 750 flow [2023-08-29 18:33:11,439 INFO L130 PetriNetUnfolder]: 54/653 cut-off events. [2023-08-29 18:33:11,439 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 18:33:11,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 653 events. 54/653 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3054 event pairs, 0 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 327. Up to 8 conditions per place. [2023-08-29 18:33:11,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 364 transitions, 750 flow [2023-08-29 18:33:11,465 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 344 places, 364 transitions, 750 flow [2023-08-29 18:33:11,469 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:33:11,486 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 364 transitions, 750 flow [2023-08-29 18:33:11,493 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 364 transitions, 750 flow [2023-08-29 18:33:11,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 364 transitions, 750 flow [2023-08-29 18:33:11,590 INFO L130 PetriNetUnfolder]: 54/653 cut-off events. [2023-08-29 18:33:11,590 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 18:33:11,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 653 events. 54/653 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3054 event pairs, 0 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 327. Up to 8 conditions per place. [2023-08-29 18:33:11,627 INFO L119 LiptonReduction]: Number of co-enabled transitions 46588 [2023-08-29 18:33:30,064 WARN L222 SmtUtils]: Spent 9.57s on a formula simplification. DAG size of input: 148 DAG size of output: 142 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:33:41,500 WARN L222 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 148 DAG size of output: 142 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:33:44,826 INFO L134 LiptonReduction]: Checked pairs total: 204807 [2023-08-29 18:33:44,826 INFO L136 LiptonReduction]: Total number of compositions: 227 [2023-08-29 18:33:44,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:33:44,849 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66dd945b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:33:44,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-29 18:33:44,852 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-29 18:33:44,852 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:33:44,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:33:44,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 18:33:44,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-29 18:33:44,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:33:44,858 INFO L85 PathProgramCache]: Analyzing trace with hash 41952, now seen corresponding path program 1 times [2023-08-29 18:33:44,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:33:44,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894918827] [2023-08-29 18:33:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:33:44,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:33:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:33:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:33:45,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:33:45,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894918827] [2023-08-29 18:33:45,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894918827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:33:45,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:33:45,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 18:33:45,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912295208] [2023-08-29 18:33:45,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:33:45,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:33:45,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:33:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:33:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:33:45,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 591 [2023-08-29 18:33:45,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 167 transitions, 356 flow. Second operand has 2 states, 2 states have (on average 341.0) internal successors, (682), 2 states have internal predecessors, (682), 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) [2023-08-29 18:33:45,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:33:45,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 591 [2023-08-29 18:33:45,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:33:47,769 INFO L130 PetriNetUnfolder]: 6989/18235 cut-off events. [2023-08-29 18:33:47,769 INFO L131 PetriNetUnfolder]: For 140/140 co-relation queries the response was YES. [2023-08-29 18:33:47,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29143 conditions, 18235 events. 6989/18235 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 175521 event pairs, 6594 based on Foata normal form. 620/16605 useless extension candidates. Maximal degree in co-relation 27444. Up to 10776 conditions per place. [2023-08-29 18:33:47,895 INFO L137 encePairwiseOnDemand]: 577/591 looper letters, 61 selfloop transitions, 0 changer transitions 0/153 dead transitions. [2023-08-29 18:33:47,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 450 flow [2023-08-29 18:33:47,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:33:47,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:33:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 755 transitions. [2023-08-29 18:33:47,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6387478849407784 [2023-08-29 18:33:47,921 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 755 transitions. [2023-08-29 18:33:47,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 755 transitions. [2023-08-29 18:33:47,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:33:47,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 755 transitions. [2023-08-29 18:33:47,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 377.5) internal successors, (755), 2 states have internal predecessors, (755), 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) [2023-08-29 18:33:47,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 591.0) internal successors, (1773), 3 states have internal predecessors, (1773), 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) [2023-08-29 18:33:47,946 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 591.0) internal successors, (1773), 3 states have internal predecessors, (1773), 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) [2023-08-29 18:33:47,948 INFO L175 Difference]: Start difference. First operand has 154 places, 167 transitions, 356 flow. Second operand 2 states and 755 transitions. [2023-08-29 18:33:47,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 450 flow [2023-08-29 18:33:47,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 450 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:33:47,966 INFO L231 Difference]: Finished difference. Result has 152 places, 153 transitions, 328 flow [2023-08-29 18:33:47,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=591, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=152, PETRI_TRANSITIONS=153} [2023-08-29 18:33:47,973 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, -2 predicate places. [2023-08-29 18:33:47,974 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 153 transitions, 328 flow [2023-08-29 18:33:47,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 341.0) internal successors, (682), 2 states have internal predecessors, (682), 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) [2023-08-29 18:33:47,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:33:47,978 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-29 18:33:47,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:33:47,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-29 18:33:47,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:33:47,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1516407197, now seen corresponding path program 1 times [2023-08-29 18:33:47,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:33:47,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040236702] [2023-08-29 18:33:47,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:33:47,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:33:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:33:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:33:48,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:33:48,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040236702] [2023-08-29 18:33:48,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040236702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:33:48,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:33:48,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:33:48,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777877816] [2023-08-29 18:33:48,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:33:48,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:33:48,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:33:48,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:33:48,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:33:48,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 591 [2023-08-29 18:33:48,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 153 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 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) [2023-08-29 18:33:48,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:33:48,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 591 [2023-08-29 18:33:48,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:33:50,019 INFO L130 PetriNetUnfolder]: 6989/18236 cut-off events. [2023-08-29 18:33:50,019 INFO L131 PetriNetUnfolder]: For 140/140 co-relation queries the response was YES. [2023-08-29 18:33:50,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29146 conditions, 18236 events. 6989/18236 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 175566 event pairs, 6594 based on Foata normal form. 0/15986 useless extension candidates. Maximal degree in co-relation 29141. Up to 10776 conditions per place. [2023-08-29 18:33:50,125 INFO L137 encePairwiseOnDemand]: 588/591 looper letters, 60 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-08-29 18:33:50,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 454 flow [2023-08-29 18:33:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:33:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:33:50,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1071 transitions. [2023-08-29 18:33:50,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6040609137055838 [2023-08-29 18:33:50,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1071 transitions. [2023-08-29 18:33:50,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1071 transitions. [2023-08-29 18:33:50,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:33:50,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1071 transitions. [2023-08-29 18:33:50,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 357.0) internal successors, (1071), 3 states have internal predecessors, (1071), 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) [2023-08-29 18:33:50,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 591.0) internal successors, (2364), 4 states have internal predecessors, (2364), 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) [2023-08-29 18:33:50,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 591.0) internal successors, (2364), 4 states have internal predecessors, (2364), 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) [2023-08-29 18:33:50,139 INFO L175 Difference]: Start difference. First operand has 152 places, 153 transitions, 328 flow. Second operand 3 states and 1071 transitions. [2023-08-29 18:33:50,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 454 flow [2023-08-29 18:33:50,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:33:50,150 INFO L231 Difference]: Finished difference. Result has 155 places, 154 transitions, 340 flow [2023-08-29 18:33:50,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=591, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=155, PETRI_TRANSITIONS=154} [2023-08-29 18:33:50,152 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 1 predicate places. [2023-08-29 18:33:50,152 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 154 transitions, 340 flow [2023-08-29 18:33:50,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 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) [2023-08-29 18:33:50,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:33:50,153 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:33:50,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:33:50,153 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-29 18:33:50,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:33:50,154 INFO L85 PathProgramCache]: Analyzing trace with hash 160347878, now seen corresponding path program 1 times [2023-08-29 18:33:50,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:33:50,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147753096] [2023-08-29 18:33:50,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:33:50,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:33:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:33:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:33:50,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:33:50,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147753096] [2023-08-29 18:33:50,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147753096] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:33:50,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299445300] [2023-08-29 18:33:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:33:50,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:33:50,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:33:50,271 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) [2023-08-29 18:33:50,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 18:33:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:33:50,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:33:50,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:33:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:33:50,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:33:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:33:50,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299445300] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:33:50,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:33:50,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:33:50,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259641408] [2023-08-29 18:33:50,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:33:50,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:33:50,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:33:50,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:33:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:33:50,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 591 [2023-08-29 18:33:50,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 154 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 336.57142857142856) internal successors, (2356), 7 states have internal predecessors, (2356), 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) [2023-08-29 18:33:50,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:33:50,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 591 [2023-08-29 18:33:50,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:33:52,533 INFO L130 PetriNetUnfolder]: 6989/18239 cut-off events. [2023-08-29 18:33:52,533 INFO L131 PetriNetUnfolder]: For 140/140 co-relation queries the response was YES. [2023-08-29 18:33:52,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29162 conditions, 18239 events. 6989/18239 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 175651 event pairs, 6594 based on Foata normal form. 0/15989 useless extension candidates. Maximal degree in co-relation 29155. Up to 10776 conditions per place. [2023-08-29 18:33:52,622 INFO L137 encePairwiseOnDemand]: 588/591 looper letters, 60 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2023-08-29 18:33:52,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 157 transitions, 482 flow [2023-08-29 18:33:52,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:33:52,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:33:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2078 transitions. [2023-08-29 18:33:52,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5860124083474337 [2023-08-29 18:33:52,628 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2078 transitions. [2023-08-29 18:33:52,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2078 transitions. [2023-08-29 18:33:52,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:33:52,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2078 transitions. [2023-08-29 18:33:52,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 346.3333333333333) internal successors, (2078), 6 states have internal predecessors, (2078), 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) [2023-08-29 18:33:52,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 591.0) internal successors, (4137), 7 states have internal predecessors, (4137), 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) [2023-08-29 18:33:52,643 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 591.0) internal successors, (4137), 7 states have internal predecessors, (4137), 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) [2023-08-29 18:33:52,643 INFO L175 Difference]: Start difference. First operand has 155 places, 154 transitions, 340 flow. Second operand 6 states and 2078 transitions. [2023-08-29 18:33:52,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 157 transitions, 482 flow [2023-08-29 18:33:52,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 157 transitions, 478 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:33:52,649 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 372 flow [2023-08-29 18:33:52,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=591, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=162, PETRI_TRANSITIONS=157} [2023-08-29 18:33:52,650 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 8 predicate places. [2023-08-29 18:33:52,651 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 372 flow [2023-08-29 18:33:52,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 336.57142857142856) internal successors, (2356), 7 states have internal predecessors, (2356), 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) [2023-08-29 18:33:52,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:33:52,652 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-29 18:33:52,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-29 18:33:52,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:33:52,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-29 18:33:52,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:33:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1205141725, now seen corresponding path program 2 times [2023-08-29 18:33:52,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:33:52,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227608677] [2023-08-29 18:33:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:33:52,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:33:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:33:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:33:53,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:33:53,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227608677] [2023-08-29 18:33:53,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227608677] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:33:53,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389063773] [2023-08-29 18:33:53,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:33:53,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:33:53,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:33:53,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:33:53,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 18:33:53,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:33:53,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:33:53,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:33:53,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:33:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:33:53,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:33:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:33:53,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389063773] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:33:53,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:33:53,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:33:53,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077360771] [2023-08-29 18:33:53,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:33:53,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:33:53,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:33:53,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:33:53,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:33:53,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 591 [2023-08-29 18:33:53,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 372 flow. Second operand has 13 states, 13 states have (on average 336.3076923076923) internal successors, (4372), 13 states have internal predecessors, (4372), 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) [2023-08-29 18:33:53,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:33:53,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 591 [2023-08-29 18:33:53,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:33:55,712 INFO L130 PetriNetUnfolder]: 6989/18245 cut-off events. [2023-08-29 18:33:55,713 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2023-08-29 18:33:55,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29199 conditions, 18245 events. 6989/18245 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 175600 event pairs, 6594 based on Foata normal form. 6/16002 useless extension candidates. Maximal degree in co-relation 29189. Up to 10776 conditions per place. [2023-08-29 18:33:55,797 INFO L137 encePairwiseOnDemand]: 588/591 looper letters, 60 selfloop transitions, 11 changer transitions 0/163 dead transitions. [2023-08-29 18:33:55,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 163 transitions, 550 flow [2023-08-29 18:33:55,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:33:55,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:33:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4097 transitions. [2023-08-29 18:33:55,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5776931754089114 [2023-08-29 18:33:55,808 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4097 transitions. [2023-08-29 18:33:55,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4097 transitions. [2023-08-29 18:33:55,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:33:55,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4097 transitions. [2023-08-29 18:33:55,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 341.4166666666667) internal successors, (4097), 12 states have internal predecessors, (4097), 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) [2023-08-29 18:33:55,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 591.0) internal successors, (7683), 13 states have internal predecessors, (7683), 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) [2023-08-29 18:33:55,839 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 591.0) internal successors, (7683), 13 states have internal predecessors, (7683), 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) [2023-08-29 18:33:55,840 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 372 flow. Second operand 12 states and 4097 transitions. [2023-08-29 18:33:55,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 163 transitions, 550 flow [2023-08-29 18:33:55,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 163 transitions, 536 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:33:55,846 INFO L231 Difference]: Finished difference. Result has 178 places, 163 transitions, 442 flow [2023-08-29 18:33:55,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=591, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=442, PETRI_PLACES=178, PETRI_TRANSITIONS=163} [2023-08-29 18:33:55,848 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 24 predicate places. [2023-08-29 18:33:55,848 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 442 flow [2023-08-29 18:33:55,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 336.3076923076923) internal successors, (4372), 13 states have internal predecessors, (4372), 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) [2023-08-29 18:33:55,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:33:55,850 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-29 18:33:55,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 18:33:56,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-29 18:33:56,057 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-29 18:33:56,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:33:56,057 INFO L85 PathProgramCache]: Analyzing trace with hash -100149181, now seen corresponding path program 3 times [2023-08-29 18:33:56,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:33:56,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419238131] [2023-08-29 18:33:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:33:56,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:33:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:33:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:33:56,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:33:56,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419238131] [2023-08-29 18:33:56,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419238131] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:33:56,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569074730] [2023-08-29 18:33:56,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 18:33:56,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:33:56,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:33:56,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:33:56,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process Killed by 15