./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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_03-munge_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 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 02:40:18,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:40:18,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:40:18,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:40:18,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:40:18,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:40:18,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:40:18,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:40:18,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:40:18,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:40:18,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:40:18,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:40:18,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:40:18,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:40:18,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:40:18,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:40:18,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:40:18,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:40:18,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:40:18,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:40:18,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:40:18,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:40:18,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:40:18,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:40:18,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:40:18,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:40:18,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:40:18,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:40:18,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:40:18,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:40:18,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:40:18,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:40:18,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:40:18,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:40:18,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:40:18,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:40:18,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:40:18,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:40:18,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:40:18,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:40:18,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:40:18,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:40:18,584 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:40:18,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:40:18,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:40:18,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:40:18,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:40:18,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:40:18,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:40:18,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:40:18,588 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:40:18,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:40:18,589 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:40:18,589 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:40:18,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:40:18,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:40:18,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:40:18,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:40:18,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:40:18,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:40:18,591 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:40:18,591 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:40:18,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:40:18,591 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:40:18,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:40:18,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:40:18,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:40:18,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:40:18,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:40:18,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:40:18,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:40:18,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:40:18,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:40:18,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:40:18,593 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:40:18,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:40:18,594 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:40:18,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:40:18,594 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:40:18,594 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:40:18,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:40:18,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:40:18,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:40:18,916 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:40:18,916 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:40:18,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-08-29 02:40:20,157 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:40:20,410 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:40:20,410 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-08-29 02:40:20,424 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99e54d3e9/e1dda0af4903480a9a04d5255f17f92e/FLAG61635fbd0 [2023-08-29 02:40:20,440 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99e54d3e9/e1dda0af4903480a9a04d5255f17f92e [2023-08-29 02:40:20,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:40:20,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:40:20,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:40:20,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:40:20,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:40:20,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:40:20" (1/1) ... [2023-08-29 02:40:20,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a4ba51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20, skipping insertion in model container [2023-08-29 02:40:20,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:40:20" (1/1) ... [2023-08-29 02:40:20,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:40:20,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:40:20,839 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_03-munge_racing.i[30176,30189] [2023-08-29 02:40:20,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:40:20,889 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:40:20,924 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_03-munge_racing.i[30176,30189] [2023-08-29 02:40:20,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:40:20,996 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:40:20,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20 WrapperNode [2023-08-29 02:40:20,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:40:20,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:40:20,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:40:20,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:40:21,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20" (1/1) ... [2023-08-29 02:40:21,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20" (1/1) ... [2023-08-29 02:40:21,070 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 239 [2023-08-29 02:40:21,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:40:21,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:40:21,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:40:21,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:40:21,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20" (1/1) ... [2023-08-29 02:40:21,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20" (1/1) ... [2023-08-29 02:40:21,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20" (1/1) ... [2023-08-29 02:40:21,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20" (1/1) ... [2023-08-29 02:40:21,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20" (1/1) ... [2023-08-29 02:40:21,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20" (1/1) ... [2023-08-29 02:40:21,124 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20" (1/1) ... [2023-08-29 02:40:21,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20" (1/1) ... [2023-08-29 02:40:21,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:40:21,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:40:21,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:40:21,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:40:21,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20" (1/1) ... [2023-08-29 02:40:21,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:40:21,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:40:21,178 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 02:40:21,202 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 02:40:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:40:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 02:40:21,221 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 02:40:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:40:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:40:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:40:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:40:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 02:40:21,222 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 02:40:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:40:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 02:40:21,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:40:21,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:40:21,224 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 02:40:21,395 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:40:21,397 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:40:21,748 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:40:21,764 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:40:21,765 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-29 02:40:21,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:40:21 BoogieIcfgContainer [2023-08-29 02:40:21,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:40:21,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:40:21,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:40:21,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:40:21,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:40:20" (1/3) ... [2023-08-29 02:40:21,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a1b4fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:40:21, skipping insertion in model container [2023-08-29 02:40:21,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:20" (2/3) ... [2023-08-29 02:40:21,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a1b4fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:40:21, skipping insertion in model container [2023-08-29 02:40:21,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:40:21" (3/3) ... [2023-08-29 02:40:21,774 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2023-08-29 02:40:21,780 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:40:21,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:40:21,787 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-29 02:40:21,787 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:40:21,893 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 02:40:21,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 246 transitions, 514 flow [2023-08-29 02:40:22,073 INFO L130 PetriNetUnfolder]: 58/458 cut-off events. [2023-08-29 02:40:22,074 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:40:22,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 458 events. 58/458 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2203 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2023-08-29 02:40:22,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 246 transitions, 514 flow [2023-08-29 02:40:22,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 246 transitions, 514 flow [2023-08-29 02:40:22,100 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:40:22,109 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 246 transitions, 514 flow [2023-08-29 02:40:22,111 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 246 transitions, 514 flow [2023-08-29 02:40:22,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 246 transitions, 514 flow [2023-08-29 02:40:22,198 INFO L130 PetriNetUnfolder]: 58/458 cut-off events. [2023-08-29 02:40:22,199 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:40:22,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 458 events. 58/458 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2203 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2023-08-29 02:40:22,222 INFO L119 LiptonReduction]: Number of co-enabled transitions 27216 [2023-08-29 02:40:26,300 INFO L134 LiptonReduction]: Checked pairs total: 73093 [2023-08-29 02:40:26,300 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-29 02:40:26,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:40:26,319 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;@3c9479d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:40:26,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 02:40:26,323 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-29 02:40:26,323 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:40:26,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:40:26,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 02:40:26,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t1_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:40:26,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:40:26,329 INFO L85 PathProgramCache]: Analyzing trace with hash 29369598, now seen corresponding path program 1 times [2023-08-29 02:40:26,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:40:26,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755887323] [2023-08-29 02:40:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:40:26,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:40:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:40:26,598 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 02:40:26,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:40:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755887323] [2023-08-29 02:40:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755887323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:40:26,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:40:26,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:40:26,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798133681] [2023-08-29 02:40:26,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:40:26,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:40:26,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:40:26,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:40:26,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:40:26,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 408 [2023-08-29 02:40:26,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 109 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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 02:40:26,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:40:26,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 408 [2023-08-29 02:40:26,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:40:27,496 INFO L130 PetriNetUnfolder]: 4057/8628 cut-off events. [2023-08-29 02:40:27,496 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2023-08-29 02:40:27,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15064 conditions, 8628 events. 4057/8628 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 71722 event pairs, 1785 based on Foata normal form. 960/8035 useless extension candidates. Maximal degree in co-relation 14425. Up to 6265 conditions per place. [2023-08-29 02:40:27,545 INFO L137 encePairwiseOnDemand]: 383/408 looper letters, 63 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-08-29 02:40:27,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 103 transitions, 358 flow [2023-08-29 02:40:27,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:40:27,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:40:27,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2023-08-29 02:40:27,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5898692810457516 [2023-08-29 02:40:27,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2023-08-29 02:40:27,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2023-08-29 02:40:27,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:40:27,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2023-08-29 02:40:27,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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 02:40:27,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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 02:40:27,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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 02:40:27,576 INFO L175 Difference]: Start difference. First operand has 88 places, 109 transitions, 240 flow. Second operand 3 states and 722 transitions. [2023-08-29 02:40:27,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 103 transitions, 358 flow [2023-08-29 02:40:27,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 103 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:40:27,584 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 204 flow [2023-08-29 02:40:27,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2023-08-29 02:40:27,589 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2023-08-29 02:40:27,589 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 204 flow [2023-08-29 02:40:27,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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 02:40:27,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:40:27,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:40:27,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:40:27,590 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr4ASSERT_VIOLATIONDATA_RACE === [t1_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:40:27,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:40:27,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2126342469, now seen corresponding path program 1 times [2023-08-29 02:40:27,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:40:27,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392249666] [2023-08-29 02:40:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:40:27,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:40:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:40:27,643 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 02:40:27,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:40:27,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392249666] [2023-08-29 02:40:27,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392249666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:40:27,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:40:27,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:40:27,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168777725] [2023-08-29 02:40:27,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:40:27,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:40:27,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:40:27,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:40:27,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:40:27,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 408 [2023-08-29 02:40:27,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 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 02:40:27,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:40:27,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 408 [2023-08-29 02:40:27,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:40:29,205 INFO L130 PetriNetUnfolder]: 10991/19498 cut-off events. [2023-08-29 02:40:29,205 INFO L131 PetriNetUnfolder]: For 372/372 co-relation queries the response was YES. [2023-08-29 02:40:29,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37193 conditions, 19498 events. 10991/19498 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 145373 event pairs, 4565 based on Foata normal form. 0/16309 useless extension candidates. Maximal degree in co-relation 37034. Up to 9378 conditions per place. [2023-08-29 02:40:29,306 INFO L137 encePairwiseOnDemand]: 386/408 looper letters, 110 selfloop transitions, 16 changer transitions 0/146 dead transitions. [2023-08-29 02:40:29,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 146 transitions, 594 flow [2023-08-29 02:40:29,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:40:29,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:40:29,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2023-08-29 02:40:29,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5735294117647058 [2023-08-29 02:40:29,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2023-08-29 02:40:29,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2023-08-29 02:40:29,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:40:29,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2023-08-29 02:40:29,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 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 02:40:29,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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 02:40:29,315 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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 02:40:29,315 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 204 flow. Second operand 3 states and 702 transitions. [2023-08-29 02:40:29,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 146 transitions, 594 flow [2023-08-29 02:40:29,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 146 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:40:29,327 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 340 flow [2023-08-29 02:40:29,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2023-08-29 02:40:29,328 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2023-08-29 02:40:29,328 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 340 flow [2023-08-29 02:40:29,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 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 02:40:29,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:40:29,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:40:29,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 02:40:29,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr1ASSERT_VIOLATIONDATA_RACE === [t1_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:40:29,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:40:29,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1538313972, now seen corresponding path program 1 times [2023-08-29 02:40:29,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:40:29,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235335680] [2023-08-29 02:40:29,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:40:29,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:40:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:40:29,390 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 02:40:29,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:40:29,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235335680] [2023-08-29 02:40:29,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235335680] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:40:29,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:40:29,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:40:29,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483269293] [2023-08-29 02:40:29,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:40:29,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:40:29,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:40:29,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:40:29,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:40:29,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 408 [2023-08-29 02:40:29,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 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 02:40:29,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:40:29,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 408 [2023-08-29 02:40:29,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:40:30,807 INFO L130 PetriNetUnfolder]: 9266/17457 cut-off events. [2023-08-29 02:40:30,807 INFO L131 PetriNetUnfolder]: For 4355/4355 co-relation queries the response was YES. [2023-08-29 02:40:30,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37451 conditions, 17457 events. 9266/17457 cut-off events. For 4355/4355 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 138736 event pairs, 6905 based on Foata normal form. 0/14629 useless extension candidates. Maximal degree in co-relation 35936. Up to 13013 conditions per place. [2023-08-29 02:40:30,919 INFO L137 encePairwiseOnDemand]: 399/408 looper letters, 92 selfloop transitions, 11 changer transitions 0/140 dead transitions. [2023-08-29 02:40:30,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 140 transitions, 656 flow [2023-08-29 02:40:30,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:40:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:40:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-08-29 02:40:30,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5580065359477124 [2023-08-29 02:40:30,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-08-29 02:40:30,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-08-29 02:40:30,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:40:30,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-08-29 02:40:30,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 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 02:40:30,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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 02:40:30,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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 02:40:30,927 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 340 flow. Second operand 3 states and 683 transitions. [2023-08-29 02:40:30,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 140 transitions, 656 flow [2023-08-29 02:40:30,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 140 transitions, 614 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:40:30,945 INFO L231 Difference]: Finished difference. Result has 93 places, 112 transitions, 404 flow [2023-08-29 02:40:30,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=93, PETRI_TRANSITIONS=112} [2023-08-29 02:40:30,946 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2023-08-29 02:40:30,946 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 112 transitions, 404 flow [2023-08-29 02:40:30,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 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 02:40:30,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:40:30,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:40:30,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 02:40:30,948 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr1ASSERT_VIOLATIONDATA_RACE === [t1_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:40:30,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:40:30,948 INFO L85 PathProgramCache]: Analyzing trace with hash 881123163, now seen corresponding path program 1 times [2023-08-29 02:40:30,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:40:30,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684802936] [2023-08-29 02:40:30,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:40:30,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:40:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:40:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:40:31,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:40:31,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684802936] [2023-08-29 02:40:31,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684802936] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:40:31,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227226294] [2023-08-29 02:40:31,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:40:31,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:40:31,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:40:31,049 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 02:40:31,058 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 02:40:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:40:31,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:40:31,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:40:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:40:31,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:40:31,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227226294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:40:31,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:40:31,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:40:31,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146784020] [2023-08-29 02:40:31,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:40:31,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:40:31,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:40:31,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:40:31,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:40:31,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 408 [2023-08-29 02:40:31,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 112 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 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 02:40:31,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:40:31,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 408 [2023-08-29 02:40:31,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:40:32,505 INFO L130 PetriNetUnfolder]: 9535/17856 cut-off events. [2023-08-29 02:40:32,505 INFO L131 PetriNetUnfolder]: For 5631/5733 co-relation queries the response was YES. [2023-08-29 02:40:32,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39493 conditions, 17856 events. 9535/17856 cut-off events. For 5631/5733 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 141300 event pairs, 7281 based on Foata normal form. 0/14858 useless extension candidates. Maximal degree in co-relation 37960. Up to 14148 conditions per place. [2023-08-29 02:40:32,584 INFO L137 encePairwiseOnDemand]: 400/408 looper letters, 96 selfloop transitions, 12 changer transitions 0/145 dead transitions. [2023-08-29 02:40:32,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 145 transitions, 724 flow [2023-08-29 02:40:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:40:32,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:40:32,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 678 transitions. [2023-08-29 02:40:32,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553921568627451 [2023-08-29 02:40:32,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 678 transitions. [2023-08-29 02:40:32,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 678 transitions. [2023-08-29 02:40:32,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:40:32,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 678 transitions. [2023-08-29 02:40:32,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 02:40:32,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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 02:40:32,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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 02:40:32,592 INFO L175 Difference]: Start difference. First operand has 93 places, 112 transitions, 404 flow. Second operand 3 states and 678 transitions. [2023-08-29 02:40:32,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 145 transitions, 724 flow [2023-08-29 02:40:32,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 145 transitions, 694 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:40:32,627 INFO L231 Difference]: Finished difference. Result has 94 places, 120 transitions, 470 flow [2023-08-29 02:40:32,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=94, PETRI_TRANSITIONS=120} [2023-08-29 02:40:32,629 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 6 predicate places. [2023-08-29 02:40:32,629 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 120 transitions, 470 flow [2023-08-29 02:40:32,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 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 02:40:32,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:40:32,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:40:32,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 02:40:32,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:40:32,844 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr4ASSERT_VIOLATIONDATA_RACE === [t1_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:40:32,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:40:32,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2039865216, now seen corresponding path program 1 times [2023-08-29 02:40:32,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:40:32,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645481355] [2023-08-29 02:40:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:40:32,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:40:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:40:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:40:32,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:40:32,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645481355] [2023-08-29 02:40:32,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645481355] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:40:32,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542057200] [2023-08-29 02:40:32,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:40:32,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:40:32,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:40:32,911 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 02:40:32,914 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 02:40:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:40:33,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:40:33,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:40:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:40:33,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:40:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:40:33,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542057200] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:40:33,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:40:33,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:40:33,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304659958] [2023-08-29 02:40:33,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:40:33,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:40:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:40:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:40:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:40:33,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 408 [2023-08-29 02:40:33,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 120 transitions, 470 flow. Second operand has 7 states, 7 states have (on average 210.42857142857142) internal successors, (1473), 7 states have internal predecessors, (1473), 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 02:40:33,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:40:33,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 408 [2023-08-29 02:40:33,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:40:33,115 INFO L130 PetriNetUnfolder]: 32/124 cut-off events. [2023-08-29 02:40:33,115 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-08-29 02:40:33,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 124 events. 32/124 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 331 event pairs, 13 based on Foata normal form. 17/138 useless extension candidates. Maximal degree in co-relation 280. Up to 66 conditions per place. [2023-08-29 02:40:33,116 INFO L137 encePairwiseOnDemand]: 405/408 looper letters, 19 selfloop transitions, 2 changer transitions 17/49 dead transitions. [2023-08-29 02:40:33,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 221 flow [2023-08-29 02:40:33,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:40:33,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:40:33,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 864 transitions. [2023-08-29 02:40:33,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2023-08-29 02:40:33,119 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 864 transitions. [2023-08-29 02:40:33,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 864 transitions. [2023-08-29 02:40:33,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:40:33,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 864 transitions. [2023-08-29 02:40:33,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 02:40:33,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 408.0) internal successors, (2040), 5 states have internal predecessors, (2040), 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 02:40:33,125 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 408.0) internal successors, (2040), 5 states have internal predecessors, (2040), 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 02:40:33,125 INFO L175 Difference]: Start difference. First operand has 94 places, 120 transitions, 470 flow. Second operand 4 states and 864 transitions. [2023-08-29 02:40:33,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 221 flow [2023-08-29 02:40:33,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 173 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-29 02:40:33,127 INFO L231 Difference]: Finished difference. Result has 40 places, 23 transitions, 55 flow [2023-08-29 02:40:33,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=55, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2023-08-29 02:40:33,128 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -48 predicate places. [2023-08-29 02:40:33,128 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 55 flow [2023-08-29 02:40:33,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 210.42857142857142) internal successors, (1473), 7 states have internal predecessors, (1473), 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 02:40:33,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:40:33,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:40:33,145 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 02:40:33,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:40:33,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr3ASSERT_VIOLATIONDATA_RACE === [t1_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:40:33,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:40:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1972476203, now seen corresponding path program 1 times [2023-08-29 02:40:33,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:40:33,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279707366] [2023-08-29 02:40:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:40:33,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:40:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:40:33,366 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 02:40:33,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:40:33,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279707366] [2023-08-29 02:40:33,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279707366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:40:33,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:40:33,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:40:33,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472404506] [2023-08-29 02:40:33,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:40:33,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:40:33,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:40:33,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:40:33,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:40:33,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 408 [2023-08-29 02:40:33,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 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 02:40:33,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:40:33,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 408 [2023-08-29 02:40:33,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:40:33,437 INFO L130 PetriNetUnfolder]: 22/79 cut-off events. [2023-08-29 02:40:33,438 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-29 02:40:33,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 79 events. 22/79 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 20 based on Foata normal form. 3/82 useless extension candidates. Maximal degree in co-relation 155. Up to 56 conditions per place. [2023-08-29 02:40:33,438 INFO L137 encePairwiseOnDemand]: 406/408 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-08-29 02:40:33,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 93 flow [2023-08-29 02:40:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:40:33,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:40:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2023-08-29 02:40:33,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49754901960784315 [2023-08-29 02:40:33,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2023-08-29 02:40:33,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2023-08-29 02:40:33,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:40:33,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2023-08-29 02:40:33,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 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 02:40:33,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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 02:40:33,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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 02:40:33,446 INFO L175 Difference]: Start difference. First operand has 40 places, 23 transitions, 55 flow. Second operand 3 states and 609 transitions. [2023-08-29 02:40:33,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 93 flow [2023-08-29 02:40:33,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 89 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:40:33,447 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-29 02:40:33,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-29 02:40:33,447 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -58 predicate places. [2023-08-29 02:40:33,448 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-29 02:40:33,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 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 02:40:33,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (21 of 22 remaining) [2023-08-29 02:40:33,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 02:40:33,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 02:40:33,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 02:40:33,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 02:40:33,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 02:40:33,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 02:40:33,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 02:40:33,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 02:40:33,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 02:40:33,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 02:40:33,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 02:40:33,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 02:40:33,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 02:40:33,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 02:40:33,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 02:40:33,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 02:40:33,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 02:40:33,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 02:40:33,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 02:40:33,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 02:40:33,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 02:40:33,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 02:40:33,461 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-29 02:40:33,475 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:40:33,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 246 transitions, 514 flow [2023-08-29 02:40:33,523 INFO L130 PetriNetUnfolder]: 58/458 cut-off events. [2023-08-29 02:40:33,524 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:40:33,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 458 events. 58/458 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2203 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2023-08-29 02:40:33,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 246 transitions, 514 flow [2023-08-29 02:40:33,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 246 transitions, 514 flow [2023-08-29 02:40:33,529 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:40:33,529 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 246 transitions, 514 flow [2023-08-29 02:40:33,530 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 246 transitions, 514 flow [2023-08-29 02:40:33,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 246 transitions, 514 flow [2023-08-29 02:40:33,572 INFO L130 PetriNetUnfolder]: 58/458 cut-off events. [2023-08-29 02:40:33,572 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:40:33,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 458 events. 58/458 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2203 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2023-08-29 02:40:33,588 INFO L119 LiptonReduction]: Number of co-enabled transitions 27216 [2023-08-29 02:40:37,380 INFO L134 LiptonReduction]: Checked pairs total: 65911 [2023-08-29 02:40:37,381 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-29 02:40:37,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:40:37,383 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;@3c9479d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:40:37,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-29 02:40:37,388 INFO L130 PetriNetUnfolder]: 4/36 cut-off events. [2023-08-29 02:40:37,388 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:40:37,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:40:37,389 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 02:40:37,389 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:40:37,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:40:37,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1369190443, now seen corresponding path program 1 times [2023-08-29 02:40:37,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:40:37,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745040759] [2023-08-29 02:40:37,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:40:37,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:40:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:40:37,404 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:40:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:40:37,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:40:37,427 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:40:37,428 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-29 02:40:37,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-29 02:40:37,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 02:40:37,428 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:40:37,429 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-29 02:40:37,430 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:40:37,430 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 02:40:37,480 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-29 02:40:37,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 396 transitions, 840 flow [2023-08-29 02:40:37,719 INFO L130 PetriNetUnfolder]: 197/1380 cut-off events. [2023-08-29 02:40:37,719 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-29 02:40:37,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1477 conditions, 1380 events. 197/1380 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9002 event pairs, 1 based on Foata normal form. 0/1124 useless extension candidates. Maximal degree in co-relation 831. Up to 32 conditions per place. [2023-08-29 02:40:37,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 396 transitions, 840 flow [2023-08-29 02:40:37,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 396 transitions, 840 flow [2023-08-29 02:40:37,759 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:40:37,759 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 396 transitions, 840 flow [2023-08-29 02:40:37,760 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 396 transitions, 840 flow [2023-08-29 02:40:37,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 396 transitions, 840 flow [2023-08-29 02:40:37,977 INFO L130 PetriNetUnfolder]: 197/1380 cut-off events. [2023-08-29 02:40:37,978 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-29 02:40:38,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1477 conditions, 1380 events. 197/1380 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9002 event pairs, 1 based on Foata normal form. 0/1124 useless extension candidates. Maximal degree in co-relation 831. Up to 32 conditions per place. [2023-08-29 02:40:38,075 INFO L119 LiptonReduction]: Number of co-enabled transitions 98784 [2023-08-29 02:40:42,114 INFO L134 LiptonReduction]: Checked pairs total: 314002 [2023-08-29 02:40:42,114 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-08-29 02:40:42,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:40:42,116 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;@3c9479d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:40:42,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-29 02:40:42,118 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-29 02:40:42,118 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:40:42,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:40:42,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 02:40:42,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr3ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 02:40:42,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:40:42,119 INFO L85 PathProgramCache]: Analyzing trace with hash 58185527, now seen corresponding path program 1 times [2023-08-29 02:40:42,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:40:42,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716935003] [2023-08-29 02:40:42,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:40:42,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:40:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:40:42,161 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 02:40:42,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:40:42,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716935003] [2023-08-29 02:40:42,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716935003] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:40:42,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:40:42,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:40:42,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006263203] [2023-08-29 02:40:42,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:40:42,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:40:42,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:40:42,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:40:42,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:40:42,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 626 [2023-08-29 02:40:42,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 210 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 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 02:40:42,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:40:42,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 626 [2023-08-29 02:40:42,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand