./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs-b.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/pthread-ext/39_rand_lock_p0_vs-b.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 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 --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 [2023-08-28 18:04:16,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-28 18:04:16,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-28 18:04:16,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-28 18:04:16,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-28 18:04:16,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-28 18:04:16,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-28 18:04:16,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-28 18:04:16,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-28 18:04:16,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-28 18:04:16,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-28 18:04:16,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-28 18:04:16,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-28 18:04:16,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-28 18:04:16,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-28 18:04:16,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-28 18:04:16,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-28 18:04:16,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-28 18:04:16,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-28 18:04:16,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-28 18:04:16,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-28 18:04:16,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-28 18:04:16,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-28 18:04:16,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-28 18:04:16,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-28 18:04:16,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-28 18:04:16,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-28 18:04:16,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-28 18:04:16,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-28 18:04:16,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-28 18:04:16,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-28 18:04:16,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-28 18:04:16,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-28 18:04:16,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-28 18:04:16,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-28 18:04:16,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-28 18:04:16,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-28 18:04:16,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-28 18:04:16,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-28 18:04:16,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-28 18:04:16,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-28 18:04:16,511 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-28 18:04:16,537 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-28 18:04:16,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-28 18:04:16,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-28 18:04:16,539 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-28 18:04:16,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-28 18:04:16,540 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-28 18:04:16,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-28 18:04:16,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-28 18:04:16,542 INFO L138 SettingsManager]: * Use SBE=true [2023-08-28 18:04:16,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-28 18:04:16,543 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-28 18:04:16,543 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-28 18:04:16,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-28 18:04:16,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-28 18:04:16,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-28 18:04:16,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-28 18:04:16,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-28 18:04:16,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-28 18:04:16,544 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-28 18:04:16,544 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-28 18:04:16,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-28 18:04:16,545 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-28 18:04:16,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-28 18:04:16,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-28 18:04:16,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-28 18:04:16,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-28 18:04:16,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 18:04:16,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-28 18:04:16,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-28 18:04:16,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-28 18:04:16,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-28 18:04:16,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-28 18:04:16,547 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-28 18:04:16,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-28 18:04:16,548 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-28 18:04:16,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-28 18:04:16,548 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-28 18:04:16,548 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-28 18:04:16,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-28 18:04:16,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-28 18:04:16,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-28 18:04:16,894 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-28 18:04:16,894 INFO L275 PluginConnector]: CDTParser initialized [2023-08-28 18:04:16,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs-b.i [2023-08-28 18:04:18,056 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-28 18:04:18,284 INFO L351 CDTParser]: Found 1 translation units. [2023-08-28 18:04:18,289 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs-b.i [2023-08-28 18:04:18,303 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8c184902/4321da64dff54cbea1e324dca90dde88/FLAG50762acfb [2023-08-28 18:04:18,315 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8c184902/4321da64dff54cbea1e324dca90dde88 [2023-08-28 18:04:18,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-28 18:04:18,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-28 18:04:18,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-28 18:04:18,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-28 18:04:18,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-28 18:04:18,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:04:18" (1/1) ... [2023-08-28 18:04:18,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2347a07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18, skipping insertion in model container [2023-08-28 18:04:18,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:04:18" (1/1) ... [2023-08-28 18:04:18,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-28 18:04:18,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-28 18:04:18,657 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs-b.i[30403,30416] [2023-08-28 18:04:18,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 18:04:18,676 INFO L203 MainTranslator]: Completed pre-run [2023-08-28 18:04:18,707 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs-b.i[30403,30416] [2023-08-28 18:04:18,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 18:04:18,744 INFO L208 MainTranslator]: Completed translation [2023-08-28 18:04:18,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18 WrapperNode [2023-08-28 18:04:18,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-28 18:04:18,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-28 18:04:18,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-28 18:04:18,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-28 18:04:18,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18" (1/1) ... [2023-08-28 18:04:18,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18" (1/1) ... [2023-08-28 18:04:18,808 INFO L138 Inliner]: procedures = 172, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 92 [2023-08-28 18:04:18,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-28 18:04:18,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-28 18:04:18,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-28 18:04:18,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-28 18:04:18,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18" (1/1) ... [2023-08-28 18:04:18,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18" (1/1) ... [2023-08-28 18:04:18,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18" (1/1) ... [2023-08-28 18:04:18,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18" (1/1) ... [2023-08-28 18:04:18,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18" (1/1) ... [2023-08-28 18:04:18,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18" (1/1) ... [2023-08-28 18:04:18,848 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18" (1/1) ... [2023-08-28 18:04:18,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18" (1/1) ... [2023-08-28 18:04:18,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-28 18:04:18,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-28 18:04:18,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-28 18:04:18,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-28 18:04:18,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18" (1/1) ... [2023-08-28 18:04:18,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 18:04:18,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 18:04:18,894 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) [2023-08-28 18:04:18,925 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 [2023-08-28 18:04:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-28 18:04:18,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-28 18:04:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-28 18:04:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-28 18:04:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-28 18:04:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-28 18:04:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-28 18:04:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-28 18:04:18,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-28 18:04:18,942 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-28 18:04:19,138 INFO L236 CfgBuilder]: Building ICFG [2023-08-28 18:04:19,139 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-28 18:04:19,354 INFO L277 CfgBuilder]: Performing block encoding [2023-08-28 18:04:19,434 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-28 18:04:19,434 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-28 18:04:19,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:04:19 BoogieIcfgContainer [2023-08-28 18:04:19,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-28 18:04:19,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-28 18:04:19,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-28 18:04:19,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-28 18:04:19,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 06:04:18" (1/3) ... [2023-08-28 18:04:19,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf73555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:04:19, skipping insertion in model container [2023-08-28 18:04:19,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:18" (2/3) ... [2023-08-28 18:04:19,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf73555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:04:19, skipping insertion in model container [2023-08-28 18:04:19,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:04:19" (3/3) ... [2023-08-28 18:04:19,445 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs-b.i [2023-08-28 18:04:19,452 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-28 18:04:19,460 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-28 18:04:19,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-28 18:04:19,461 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-28 18:04:19,517 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:04:19,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 79 transitions, 163 flow [2023-08-28 18:04:19,582 INFO L130 PetriNetUnfolder]: 5/89 cut-off events. [2023-08-28 18:04:19,582 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:19,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 5/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-08-28 18:04:19,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 79 transitions, 163 flow [2023-08-28 18:04:19,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 79 transitions, 163 flow [2023-08-28 18:04:19,595 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:19,603 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 79 transitions, 163 flow [2023-08-28 18:04:19,606 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 79 transitions, 163 flow [2023-08-28 18:04:19,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 79 transitions, 163 flow [2023-08-28 18:04:19,623 INFO L130 PetriNetUnfolder]: 5/89 cut-off events. [2023-08-28 18:04:19,624 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:19,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 5/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-08-28 18:04:19,626 INFO L119 LiptonReduction]: Number of co-enabled transitions 1378 [2023-08-28 18:04:21,511 INFO L134 LiptonReduction]: Checked pairs total: 1247 [2023-08-28 18:04:21,512 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-28 18:04:21,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:04:21,530 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;@70c419c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:21,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-28 18:04:21,534 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:04:21,534 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:21,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:21,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:04:21,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-08-28 18:04:21,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:21,540 INFO L85 PathProgramCache]: Analyzing trace with hash 12427968, now seen corresponding path program 1 times [2023-08-28 18:04:21,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:21,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909235207] [2023-08-28 18:04:21,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:21,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:21,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:21,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909235207] [2023-08-28 18:04:21,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909235207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:21,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:21,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:04:21,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061053734] [2023-08-28 18:04:21,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:21,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:04:21,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:21,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:04:21,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:04:21,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 164 [2023-08-28 18:04:21,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 37 flow. Second operand has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 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) [2023-08-28 18:04:21,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:21,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 164 [2023-08-28 18:04:21,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:21,776 INFO L130 PetriNetUnfolder]: 7/19 cut-off events. [2023-08-28 18:04:21,776 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:21,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 19 events. 7/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 4 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2023-08-28 18:04:21,777 INFO L137 encePairwiseOnDemand]: 156/164 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-28 18:04:21,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 35 flow [2023-08-28 18:04:21,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:04:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:04:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 149 transitions. [2023-08-28 18:04:21,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2023-08-28 18:04:21,790 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 149 transitions. [2023-08-28 18:04:21,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 149 transitions. [2023-08-28 18:04:21,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:21,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 149 transitions. [2023-08-28 18:04:21,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 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) [2023-08-28 18:04:21,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 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) [2023-08-28 18:04:21,799 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 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) [2023-08-28 18:04:21,800 INFO L175 Difference]: Start difference. First operand has 18 places, 16 transitions, 37 flow. Second operand 2 states and 149 transitions. [2023-08-28 18:04:21,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 35 flow [2023-08-28 18:04:21,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 35 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:21,803 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2023-08-28 18:04:21,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2023-08-28 18:04:21,808 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -7 predicate places. [2023-08-28 18:04:21,808 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2023-08-28 18:04:21,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 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) [2023-08-28 18:04:21,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 14 remaining) [2023-08-28 18:04:21,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2023-08-28 18:04:21,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2023-08-28 18:04:21,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2023-08-28 18:04:21,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2023-08-28 18:04:21,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2023-08-28 18:04:21,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2023-08-28 18:04:21,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2023-08-28 18:04:21,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2023-08-28 18:04:21,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2023-08-28 18:04:21,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2023-08-28 18:04:21,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2023-08-28 18:04:21,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2023-08-28 18:04:21,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2023-08-28 18:04:21,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-28 18:04:21,815 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:04:21,817 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:04:21,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 79 transitions, 163 flow [2023-08-28 18:04:21,835 INFO L130 PetriNetUnfolder]: 5/89 cut-off events. [2023-08-28 18:04:21,835 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:21,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 5/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-08-28 18:04:21,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 79 transitions, 163 flow [2023-08-28 18:04:21,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 79 transitions, 163 flow [2023-08-28 18:04:21,837 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:21,837 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 79 transitions, 163 flow [2023-08-28 18:04:21,838 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 79 transitions, 163 flow [2023-08-28 18:04:21,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 79 transitions, 163 flow [2023-08-28 18:04:21,849 INFO L130 PetriNetUnfolder]: 5/89 cut-off events. [2023-08-28 18:04:21,850 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:21,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 5/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-08-28 18:04:21,851 INFO L119 LiptonReduction]: Number of co-enabled transitions 1378 [2023-08-28 18:04:23,558 INFO L134 LiptonReduction]: Checked pairs total: 1251 [2023-08-28 18:04:23,558 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-28 18:04:23,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:04:23,561 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;@70c419c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:23,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:04:23,565 INFO L130 PetriNetUnfolder]: 1/17 cut-off events. [2023-08-28 18:04:23,565 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:23,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:23,565 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-28 18:04:23,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:04:23,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:23,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1631351022, now seen corresponding path program 1 times [2023-08-28 18:04:23,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:23,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876607047] [2023-08-28 18:04:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:23,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:23,592 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:04:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:23,619 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:04:23,619 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:04:23,620 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:04:23,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-28 18:04:23,620 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:04:23,621 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:04:23,621 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:04:23,621 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-28 18:04:23,643 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:04:23,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 133 transitions, 278 flow [2023-08-28 18:04:23,668 INFO L130 PetriNetUnfolder]: 9/155 cut-off events. [2023-08-28 18:04:23,668 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:04:23,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 155 events. 9/155 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 284 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-08-28 18:04:23,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 133 transitions, 278 flow [2023-08-28 18:04:23,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 133 transitions, 278 flow [2023-08-28 18:04:23,671 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:23,671 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 133 transitions, 278 flow [2023-08-28 18:04:23,672 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 133 transitions, 278 flow [2023-08-28 18:04:23,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 133 transitions, 278 flow [2023-08-28 18:04:23,691 INFO L130 PetriNetUnfolder]: 9/155 cut-off events. [2023-08-28 18:04:23,691 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:04:23,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 155 events. 9/155 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 284 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-08-28 18:04:23,698 INFO L119 LiptonReduction]: Number of co-enabled transitions 8480 [2023-08-28 18:04:25,340 INFO L134 LiptonReduction]: Checked pairs total: 16549 [2023-08-28 18:04:25,340 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-28 18:04:25,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:04:25,344 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;@70c419c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:25,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-28 18:04:25,346 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-28 18:04:25,346 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:25,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:25,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-28 18:04:25,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 18:04:25,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:25,347 INFO L85 PathProgramCache]: Analyzing trace with hash 756370640, now seen corresponding path program 1 times [2023-08-28 18:04:25,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:25,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986973708] [2023-08-28 18:04:25,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:25,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:25,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:25,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986973708] [2023-08-28 18:04:25,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986973708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:25,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:25,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:04:25,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538908681] [2023-08-28 18:04:25,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:25,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:04:25,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:25,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:04:25,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:04:25,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 240 [2023-08-28 18:04:25,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2023-08-28 18:04:25,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:25,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 240 [2023-08-28 18:04:25,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:25,558 INFO L130 PetriNetUnfolder]: 564/1020 cut-off events. [2023-08-28 18:04:25,558 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-28 18:04:25,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 1020 events. 564/1020 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5566 event pairs, 208 based on Foata normal form. 0/931 useless extension candidates. Maximal degree in co-relation 1568. Up to 632 conditions per place. [2023-08-28 18:04:25,566 INFO L137 encePairwiseOnDemand]: 216/240 looper letters, 46 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2023-08-28 18:04:25,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 253 flow [2023-08-28 18:04:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:04:25,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:04:25,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-08-28 18:04:25,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5152777777777777 [2023-08-28 18:04:25,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-08-28 18:04:25,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-08-28 18:04:25,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:25,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-08-28 18:04:25,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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) [2023-08-28 18:04:25,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 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) [2023-08-28 18:04:25,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 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) [2023-08-28 18:04:25,575 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 106 flow. Second operand 3 states and 371 transitions. [2023-08-28 18:04:25,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 253 flow [2023-08-28 18:04:25,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 251 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:25,578 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 172 flow [2023-08-28 18:04:25,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-08-28 18:04:25,580 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2023-08-28 18:04:25,580 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 172 flow [2023-08-28 18:04:25,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2023-08-28 18:04:25,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:25,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:25,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-28 18:04:25,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 18:04:25,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:25,582 INFO L85 PathProgramCache]: Analyzing trace with hash 2073852205, now seen corresponding path program 1 times [2023-08-28 18:04:25,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:25,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998371491] [2023-08-28 18:04:25,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:25,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:25,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:25,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998371491] [2023-08-28 18:04:25,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998371491] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:25,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:25,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:04:25,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481820767] [2023-08-28 18:04:25,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:25,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:04:25,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:25,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:04:25,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:04:25,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 240 [2023-08-28 18:04:25,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2023-08-28 18:04:25,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:25,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 240 [2023-08-28 18:04:25,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:25,819 INFO L130 PetriNetUnfolder]: 493/936 cut-off events. [2023-08-28 18:04:25,820 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2023-08-28 18:04:25,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2137 conditions, 936 events. 493/936 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5111 event pairs, 315 based on Foata normal form. 0/844 useless extension candidates. Maximal degree in co-relation 1418. Up to 746 conditions per place. [2023-08-28 18:04:25,825 INFO L137 encePairwiseOnDemand]: 234/240 looper letters, 35 selfloop transitions, 8 changer transitions 2/62 dead transitions. [2023-08-28 18:04:25,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 62 transitions, 313 flow [2023-08-28 18:04:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:04:25,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:04:25,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2023-08-28 18:04:25,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2023-08-28 18:04:25,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 338 transitions. [2023-08-28 18:04:25,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 338 transitions. [2023-08-28 18:04:25,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:25,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 338 transitions. [2023-08-28 18:04:25,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2023-08-28 18:04:25,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 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) [2023-08-28 18:04:25,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 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) [2023-08-28 18:04:25,832 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 172 flow. Second operand 3 states and 338 transitions. [2023-08-28 18:04:25,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 62 transitions, 313 flow [2023-08-28 18:04:25,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:04:25,836 INFO L231 Difference]: Finished difference. Result has 45 places, 53 transitions, 212 flow [2023-08-28 18:04:25,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=45, PETRI_TRANSITIONS=53} [2023-08-28 18:04:25,837 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2023-08-28 18:04:25,837 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 53 transitions, 212 flow [2023-08-28 18:04:25,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2023-08-28 18:04:25,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:25,838 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:25,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-28 18:04:25,838 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 18:04:25,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:25,839 INFO L85 PathProgramCache]: Analyzing trace with hash -529548157, now seen corresponding path program 1 times [2023-08-28 18:04:25,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:25,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955538867] [2023-08-28 18:04:25,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:25,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:04:25,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:25,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955538867] [2023-08-28 18:04:25,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955538867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:25,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:25,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:04:25,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721159871] [2023-08-28 18:04:25,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:25,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:04:25,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:04:25,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:04:25,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 240 [2023-08-28 18:04:25,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 53 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2023-08-28 18:04:25,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:25,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 240 [2023-08-28 18:04:25,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:26,038 INFO L130 PetriNetUnfolder]: 517/964 cut-off events. [2023-08-28 18:04:26,038 INFO L131 PetriNetUnfolder]: For 331/341 co-relation queries the response was YES. [2023-08-28 18:04:26,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2338 conditions, 964 events. 517/964 cut-off events. For 331/341 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5178 event pairs, 311 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 1612. Up to 790 conditions per place. [2023-08-28 18:04:26,043 INFO L137 encePairwiseOnDemand]: 234/240 looper letters, 32 selfloop transitions, 9 changer transitions 8/66 dead transitions. [2023-08-28 18:04:26,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 354 flow [2023-08-28 18:04:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:04:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:04:26,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2023-08-28 18:04:26,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-28 18:04:26,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2023-08-28 18:04:26,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2023-08-28 18:04:26,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:26,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2023-08-28 18:04:26,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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) [2023-08-28 18:04:26,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 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) [2023-08-28 18:04:26,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 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) [2023-08-28 18:04:26,048 INFO L175 Difference]: Start difference. First operand has 45 places, 53 transitions, 212 flow. Second operand 3 states and 336 transitions. [2023-08-28 18:04:26,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 354 flow [2023-08-28 18:04:26,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 18:04:26,052 INFO L231 Difference]: Finished difference. Result has 47 places, 53 transitions, 237 flow [2023-08-28 18:04:26,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=47, PETRI_TRANSITIONS=53} [2023-08-28 18:04:26,053 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2023-08-28 18:04:26,053 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 53 transitions, 237 flow [2023-08-28 18:04:26,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2023-08-28 18:04:26,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:26,053 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:26,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-28 18:04:26,054 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 18:04:26,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:26,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1723212228, now seen corresponding path program 1 times [2023-08-28 18:04:26,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:26,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051670572] [2023-08-28 18:04:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:26,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:26,068 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:04:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:26,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:04:26,101 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:04:26,101 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 21 remaining) [2023-08-28 18:04:26,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-08-28 18:04:26,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-08-28 18:04:26,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-08-28 18:04:26,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-08-28 18:04:26,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2023-08-28 18:04:26,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2023-08-28 18:04:26,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-08-28 18:04:26,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-08-28 18:04:26,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-08-28 18:04:26,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2023-08-28 18:04:26,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2023-08-28 18:04:26,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2023-08-28 18:04:26,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2023-08-28 18:04:26,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-08-28 18:04:26,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2023-08-28 18:04:26,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-08-28 18:04:26,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-08-28 18:04:26,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-08-28 18:04:26,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-08-28 18:04:26,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2023-08-28 18:04:26,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-28 18:04:26,104 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-28 18:04:26,105 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-28 18:04:26,107 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-28 18:04:26,107 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-28 18:04:26,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.08 06:04:26 BasicIcfg [2023-08-28 18:04:26,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-28 18:04:26,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-28 18:04:26,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-28 18:04:26,139 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-28 18:04:26,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:04:19" (3/4) ... [2023-08-28 18:04:26,141 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-28 18:04:26,141 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-28 18:04:26,142 INFO L158 Benchmark]: Toolchain (without parser) took 7823.01ms. Allocated memory was 73.4MB in the beginning and 130.0MB in the end (delta: 56.6MB). Free memory was 41.1MB in the beginning and 96.8MB in the end (delta: -55.8MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. [2023-08-28 18:04:26,142 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory is still 32.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-28 18:04:26,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.94ms. Allocated memory is still 73.4MB. Free memory was 40.9MB in the beginning and 38.6MB in the end (delta: 2.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-08-28 18:04:26,143 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.02ms. Allocated memory is still 73.4MB. Free memory was 38.3MB in the beginning and 36.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-28 18:04:26,143 INFO L158 Benchmark]: Boogie Preprocessor took 47.03ms. Allocated memory is still 73.4MB. Free memory was 36.4MB in the beginning and 35.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-28 18:04:26,143 INFO L158 Benchmark]: RCFGBuilder took 579.72ms. Allocated memory is still 73.4MB. Free memory was 35.0MB in the beginning and 39.1MB in the end (delta: -4.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-08-28 18:04:26,143 INFO L158 Benchmark]: TraceAbstraction took 6699.52ms. Allocated memory was 73.4MB in the beginning and 130.0MB in the end (delta: 56.6MB). Free memory was 38.4MB in the beginning and 96.8MB in the end (delta: -58.5MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. [2023-08-28 18:04:26,143 INFO L158 Benchmark]: Witness Printer took 3.02ms. Allocated memory is still 130.0MB. Free memory is still 96.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-28 18:04:26,145 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory is still 32.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.94ms. Allocated memory is still 73.4MB. Free memory was 40.9MB in the beginning and 38.6MB in the end (delta: 2.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.02ms. Allocated memory is still 73.4MB. Free memory was 38.3MB in the beginning and 36.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.03ms. Allocated memory is still 73.4MB. Free memory was 36.4MB in the beginning and 35.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 579.72ms. Allocated memory is still 73.4MB. Free memory was 35.0MB in the beginning and 39.1MB in the end (delta: -4.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 6699.52ms. Allocated memory was 73.4MB in the beginning and 130.0MB in the end (delta: 56.6MB). Free memory was 38.4MB in the beginning and 96.8MB in the end (delta: -58.5MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. * Witness Printer took 3.02ms. Allocated memory is still 130.0MB. Free memory is still 96.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 78 PlacesBefore, 18 PlacesAfterwards, 79 TransitionsBefore, 16 TransitionsAfterwards, 1378 CoEnabledTransitionPairs, 6 FixpointIterations, 11 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 85 TotalNumberOfCompositions, 1247 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1247, independent: 1247, independent conditional: 0, independent unconditional: 1247, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 694, independent: 694, independent conditional: 0, independent unconditional: 694, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1247, independent: 553, independent conditional: 0, independent unconditional: 553, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 694, unknown conditional: 0, unknown unconditional: 694] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 78 PlacesBefore, 18 PlacesAfterwards, 79 TransitionsBefore, 16 TransitionsAfterwards, 1378 CoEnabledTransitionPairs, 6 FixpointIterations, 11 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 85 TotalNumberOfCompositions, 1251 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1251, independent: 1251, independent conditional: 0, independent unconditional: 1251, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 697, independent: 697, independent conditional: 0, independent unconditional: 697, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1251, independent: 554, independent conditional: 0, independent unconditional: 554, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 697, unknown conditional: 0, unknown unconditional: 697] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 131 PlacesBefore, 49 PlacesAfterwards, 133 TransitionsBefore, 47 TransitionsAfterwards, 8480 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 80 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 107 TotalNumberOfCompositions, 16549 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8440, independent: 8144, independent conditional: 0, independent unconditional: 8144, dependent: 296, dependent conditional: 0, dependent unconditional: 296, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4526, independent: 4439, independent conditional: 0, independent unconditional: 4439, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8440, independent: 3705, independent conditional: 0, independent unconditional: 3705, dependent: 209, dependent conditional: 0, dependent unconditional: 209, unknown: 4526, unknown conditional: 0, unknown unconditional: 4526] , Statistics on independence cache: Total cache size (in pairs): 338, Positive cache size: 292, Positive conditional cache size: 0, Positive unconditional cache size: 292, Negative cache size: 46, Negative conditional cache size: 0, Negative unconditional cache size: 46, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 709]: Data race detected Data race detected The following path leads to a data race: [L689] 0 int m = 0; [L706] 0 int seed = 1; [L724] 0 pthread_t t; VAL [m=0, seed=1, t={3:0}] [L725] COND TRUE 0 1 [L725] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m=0, pthread_create(&t, 0, thr1, 0)=-2, seed=1, t={3:0}] [L725] COND TRUE 0 1 [L719] CALL 1 PseudoRandomUsingAtomic_nextInt() [L708] 1 int read, nexts, nextInt_return; [L709] EXPR 1 seed != 0 VAL [m=0, seed=1] [L709] COND FALSE 1 !(!(seed != 0)) VAL [m=0, seed=1] [L710] CALL 1 __VERIFIER_atomic_acquire() [L692] EXPR 1 m==0 [L692] CALL 1 assume_abort_if_not(m==0) [L3] COND FALSE 1 !(!cond) [L692] RET 1 assume_abort_if_not(m==0) [L693] 1 m = 1 [L710] RET 1 __VERIFIER_atomic_acquire() [L725] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m=1, pthread_create(&t, 0, thr1, 0)=-1, seed=1, t={3:0}] [L711] 1 read = seed VAL [m=1, seed=1] [L719] CALL 2 PseudoRandomUsingAtomic_nextInt() [L708] 2 int read, nexts, nextInt_return; [L709] 2 seed != 0 VAL [m=1, seed=1] [L711] 1 read = seed [L712] CALL, EXPR 1 calculateNext(read) [L701] 1 int cnex; VAL [\old(s2)=1, m=1, s2=1, seed=1] [L702] 1 cnex = __VERIFIER_nondet_int() [L703] COND FALSE 1 !(cnex == s2 || cnex == 0) [L704] 1 return cnex; [L712] RET, EXPR 1 calculateNext(read) [L712] 1 nexts = calculateNext(read) [L713] 1 seed = nexts VAL [m=1, nexts=5, read=1, seed = nexts=49, seed=5] [L709] 2 seed != 0 VAL [m=1, nexts=5, read=1, seed = nexts=49, seed=5] Now there is a data race on ~seed~0 between C: seed = nexts [713] and C: seed != 0 [709] - UnprovableResult [Line: 697]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 127 locations, 15 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 178 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 152 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 233 IncrementalHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 30 mSDtfsCounter, 233 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=3, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 127 locations, 15 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-28 18:04:26,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE