./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:29:28,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:29:28,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:29:28,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:29:28,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:29:28,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:29:28,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:29:28,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:29:28,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:29:28,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:29:28,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:29:28,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:29:28,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:29:28,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:29:28,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:29:28,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:29:28,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:29:28,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:29:28,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:29:28,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:29:28,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:29:28,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:29:28,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:29:28,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:29:28,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:29:28,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:29:28,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:29:28,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:29:28,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:29:28,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:29:28,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:29:28,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:29:28,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:29:28,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:29:28,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:29:28,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:29:28,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:29:28,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:29:28,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:29:28,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:29:28,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:29:28,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:29:28,858 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:29:28,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:29:28,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:29:28,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:29:28,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:29:28,860 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:29:28,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:29:28,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:29:28,861 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:29:28,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:29:28,862 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:29:28,863 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:29:28,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:29:28,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:29:28,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:29:28,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:29:28,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:29:28,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:29:28,864 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:29:28,864 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:29:28,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:29:28,865 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:29:28,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:29:28,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:29:28,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:29:28,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:29:28,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:29:28,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:29:28,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:29:28,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:29:28,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:29:28,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:29:28,867 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:29:28,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:29:28,867 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:29:28,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:29:28,868 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:29:28,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:29:29,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:29:29,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:29:29,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:29:29,171 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:29:29,172 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:29:29,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-29 18:29:30,368 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:29:30,644 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:29:30,645 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-29 18:29:30,660 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cea06159/4809a1470cca45c89126d8c03933c43c/FLAG18b392780 [2023-08-29 18:29:30,673 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cea06159/4809a1470cca45c89126d8c03933c43c [2023-08-29 18:29:30,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:29:30,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:29:30,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:29:30,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:29:30,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:29:30,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:29:30" (1/1) ... [2023-08-29 18:29:30,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a349ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:30, skipping insertion in model container [2023-08-29 18:29:30,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:29:30" (1/1) ... [2023-08-29 18:29:30,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:29:30,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:29:31,134 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-08-29 18:29:31,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:29:31,214 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:29:31,249 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-08-29 18:29:31,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:29:31,345 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:29:31,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:31 WrapperNode [2023-08-29 18:29:31,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:29:31,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:29:31,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:29:31,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:29:31,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:31" (1/1) ... [2023-08-29 18:29:31,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:31" (1/1) ... [2023-08-29 18:29:31,453 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 312 [2023-08-29 18:29:31,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:29:31,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:29:31,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:29:31,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:29:31,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:31" (1/1) ... [2023-08-29 18:29:31,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:31" (1/1) ... [2023-08-29 18:29:31,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:31" (1/1) ... [2023-08-29 18:29:31,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:31" (1/1) ... [2023-08-29 18:29:31,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:31" (1/1) ... [2023-08-29 18:29:31,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:31" (1/1) ... [2023-08-29 18:29:31,525 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:31" (1/1) ... [2023-08-29 18:29:31,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:31" (1/1) ... [2023-08-29 18:29:31,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:29:31,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:29:31,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:29:31,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:29:31,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:31" (1/1) ... [2023-08-29 18:29:31,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:29:31,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:29:31,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 18:29:31,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 18:29:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:29:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 18:29:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 18:29:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 18:29:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:29:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:29:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 18:29:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 18:29:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:29:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:29:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 18:29:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:29:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 18:29:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:29:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:29:31,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:29:31,599 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:29:31,797 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:29:31,799 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:29:32,268 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:29:32,276 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:29:32,277 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-08-29 18:29:32,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:29:32 BoogieIcfgContainer [2023-08-29 18:29:32,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:29:32,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:29:32,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:29:32,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:29:32,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:29:30" (1/3) ... [2023-08-29 18:29:32,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c60a290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:29:32, skipping insertion in model container [2023-08-29 18:29:32,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:29:31" (2/3) ... [2023-08-29 18:29:32,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c60a290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:29:32, skipping insertion in model container [2023-08-29 18:29:32,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:29:32" (3/3) ... [2023-08-29 18:29:32,286 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-08-29 18:29:32,293 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:29:32,302 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:29:32,302 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-08-29 18:29:32,302 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:29:32,430 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 18:29:32,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 334 transitions, 690 flow [2023-08-29 18:29:32,716 INFO L130 PetriNetUnfolder]: 52/607 cut-off events. [2023-08-29 18:29:32,717 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 18:29:32,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 607 events. 52/607 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2727 event pairs, 0 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 302. Up to 8 conditions per place. [2023-08-29 18:29:32,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 334 transitions, 690 flow [2023-08-29 18:29:32,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 316 places, 334 transitions, 690 flow [2023-08-29 18:29:32,745 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:29:32,759 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 316 places, 334 transitions, 690 flow [2023-08-29 18:29:32,763 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 316 places, 334 transitions, 690 flow [2023-08-29 18:29:32,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 334 transitions, 690 flow [2023-08-29 18:29:32,881 INFO L130 PetriNetUnfolder]: 52/607 cut-off events. [2023-08-29 18:29:32,881 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 18:29:32,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 607 events. 52/607 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2727 event pairs, 0 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 302. Up to 8 conditions per place. [2023-08-29 18:29:32,924 INFO L119 LiptonReduction]: Number of co-enabled transitions 39038 [2023-08-29 18:29:57,391 INFO L134 LiptonReduction]: Checked pairs total: 239954 [2023-08-29 18:29:57,392 INFO L136 LiptonReduction]: Total number of compositions: 214 [2023-08-29 18:29:57,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:29:57,410 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;@4367aeea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:29:57,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-29 18:29:57,412 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 18:29:57,412 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:29:57,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:29:57,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 18:29:57,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-29 18:29:57,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:29:57,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1202, now seen corresponding path program 1 times [2023-08-29 18:29:57,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:29:57,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687541795] [2023-08-29 18:29:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:29:57,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:29:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:29:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:29:57,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:29:57,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687541795] [2023-08-29 18:29:57,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687541795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:29:57,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:29:57,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 18:29:57,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913596961] [2023-08-29 18:29:57,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:29:57,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:29:57,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:29:57,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:29:57,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:29:57,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 548 [2023-08-29 18:29:57,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 157 transitions, 336 flow. Second operand has 2 states, 2 states have (on average 311.5) internal successors, (623), 2 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:57,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:29:57,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 548 [2023-08-29 18:29:57,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:29:59,822 INFO L130 PetriNetUnfolder]: 5883/15372 cut-off events. [2023-08-29 18:29:59,822 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2023-08-29 18:29:59,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24584 conditions, 15372 events. 5883/15372 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 145035 event pairs, 5531 based on Foata normal form. 685/14325 useless extension candidates. Maximal degree in co-relation 22972. Up to 9092 conditions per place. [2023-08-29 18:29:59,927 INFO L137 encePairwiseOnDemand]: 533/548 looper letters, 56 selfloop transitions, 0 changer transitions 0/142 dead transitions. [2023-08-29 18:29:59,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 142 transitions, 418 flow [2023-08-29 18:29:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:29:59,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:29:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 693 transitions. [2023-08-29 18:29:59,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6322992700729927 [2023-08-29 18:29:59,943 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 693 transitions. [2023-08-29 18:29:59,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 693 transitions. [2023-08-29 18:29:59,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:29:59,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 693 transitions. [2023-08-29 18:29:59,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 346.5) internal successors, (693), 2 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:59,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 548.0) internal successors, (1644), 3 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:59,958 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 548.0) internal successors, (1644), 3 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:59,959 INFO L175 Difference]: Start difference. First operand has 145 places, 157 transitions, 336 flow. Second operand 2 states and 693 transitions. [2023-08-29 18:29:59,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 142 transitions, 418 flow [2023-08-29 18:29:59,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 142 transitions, 418 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:29:59,981 INFO L231 Difference]: Finished difference. Result has 142 places, 142 transitions, 306 flow [2023-08-29 18:29:59,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=306, PETRI_PLACES=142, PETRI_TRANSITIONS=142} [2023-08-29 18:29:59,987 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -3 predicate places. [2023-08-29 18:29:59,987 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 142 transitions, 306 flow [2023-08-29 18:29:59,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 311.5) internal successors, (623), 2 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:59,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:29:59,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 18:29:59,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:29:59,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-29 18:29:59,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:29:59,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1301906210, now seen corresponding path program 1 times [2023-08-29 18:29:59,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:29:59,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680087043] [2023-08-29 18:29:59,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:29:59,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:30:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:30:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:30:00,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:30:00,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680087043] [2023-08-29 18:30:00,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680087043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:30:00,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:30:00,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:30:00,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855522198] [2023-08-29 18:30:00,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:30:00,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:30:00,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:30:00,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:30:00,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:30:00,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 548 [2023-08-29 18:30:00,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 142 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:00,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:30:00,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 548 [2023-08-29 18:30:00,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:30:01,698 INFO L130 PetriNetUnfolder]: 5809/15086 cut-off events. [2023-08-29 18:30:01,699 INFO L131 PetriNetUnfolder]: For 108/108 co-relation queries the response was YES. [2023-08-29 18:30:01,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24160 conditions, 15086 events. 5809/15086 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 141716 event pairs, 5038 based on Foata normal form. 0/13367 useless extension candidates. Maximal degree in co-relation 24155. Up to 8934 conditions per place. [2023-08-29 18:30:01,788 INFO L137 encePairwiseOnDemand]: 545/548 looper letters, 68 selfloop transitions, 2 changer transitions 0/156 dead transitions. [2023-08-29 18:30:01,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 156 transitions, 474 flow [2023-08-29 18:30:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:30:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:30:01,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 992 transitions. [2023-08-29 18:30:01,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6034063260340633 [2023-08-29 18:30:01,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 992 transitions. [2023-08-29 18:30:01,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 992 transitions. [2023-08-29 18:30:01,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:30:01,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 992 transitions. [2023-08-29 18:30:01,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:01,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:01,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:01,801 INFO L175 Difference]: Start difference. First operand has 142 places, 142 transitions, 306 flow. Second operand 3 states and 992 transitions. [2023-08-29 18:30:01,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 156 transitions, 474 flow [2023-08-29 18:30:01,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 156 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:30:01,809 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 314 flow [2023-08-29 18:30:01,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2023-08-29 18:30:01,810 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 0 predicate places. [2023-08-29 18:30:01,810 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 314 flow [2023-08-29 18:30:01,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:01,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:30:01,811 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 18:30:01,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:30:01,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-29 18:30:01,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:30:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1292884289, now seen corresponding path program 1 times [2023-08-29 18:30:01,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:30:01,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590379873] [2023-08-29 18:30:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:30:01,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:30:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:30:01,844 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:30:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:30:01,880 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:30:01,881 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:30:01,882 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2023-08-29 18:30:01,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-08-29 18:30:01,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-08-29 18:30:01,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-08-29 18:30:01,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-08-29 18:30:01,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-08-29 18:30:01,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-08-29 18:30:01,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-08-29 18:30:01,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-08-29 18:30:01,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-08-29 18:30:01,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-08-29 18:30:01,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-08-29 18:30:01,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-08-29 18:30:01,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-08-29 18:30:01,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-08-29 18:30:01,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 36 remaining) [2023-08-29 18:30:01,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-08-29 18:30:01,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-08-29 18:30:01,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-08-29 18:30:01,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-08-29 18:30:01,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2023-08-29 18:30:01,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-08-29 18:30:01,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-08-29 18:30:01,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-08-29 18:30:01,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-08-29 18:30:01,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-08-29 18:30:01,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-08-29 18:30:01,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-08-29 18:30:01,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-08-29 18:30:01,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-08-29 18:30:01,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-08-29 18:30:01,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-08-29 18:30:01,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-08-29 18:30:01,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-08-29 18:30:01,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-08-29 18:30:01,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-08-29 18:30:01,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 18:30:01,891 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 18:30:01,893 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:30:01,893 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:30:02,073 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-29 18:30:02,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 504 places, 537 transitions, 1122 flow [2023-08-29 18:30:02,556 INFO L130 PetriNetUnfolder]: 191/1765 cut-off events. [2023-08-29 18:30:02,557 INFO L131 PetriNetUnfolder]: For 72/114 co-relation queries the response was YES. [2023-08-29 18:30:02,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1862 conditions, 1765 events. 191/1765 cut-off events. For 72/114 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 12225 event pairs, 2 based on Foata normal form. 0/1477 useless extension candidates. Maximal degree in co-relation 1098. Up to 32 conditions per place. [2023-08-29 18:30:02,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 504 places, 537 transitions, 1122 flow [2023-08-29 18:30:02,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 504 places, 537 transitions, 1122 flow [2023-08-29 18:30:02,635 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:30:02,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 504 places, 537 transitions, 1122 flow [2023-08-29 18:30:02,636 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 504 places, 537 transitions, 1122 flow [2023-08-29 18:30:02,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 504 places, 537 transitions, 1122 flow [2023-08-29 18:30:03,037 INFO L130 PetriNetUnfolder]: 191/1765 cut-off events. [2023-08-29 18:30:03,038 INFO L131 PetriNetUnfolder]: For 72/114 co-relation queries the response was YES. [2023-08-29 18:30:03,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1862 conditions, 1765 events. 191/1765 cut-off events. For 72/114 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 12225 event pairs, 2 based on Foata normal form. 0/1477 useless extension candidates. Maximal degree in co-relation 1098. Up to 32 conditions per place. [2023-08-29 18:30:03,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 159496 [2023-08-29 18:30:16,719 INFO L134 LiptonReduction]: Checked pairs total: 875648 [2023-08-29 18:30:16,720 INFO L136 LiptonReduction]: Total number of compositions: 302 [2023-08-29 18:30:16,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:30:16,724 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;@4367aeea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:30:16,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-08-29 18:30:16,726 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 18:30:16,732 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:30:16,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:30:16,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 18:30:16,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-29 18:30:16,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:30:16,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2245, now seen corresponding path program 1 times [2023-08-29 18:30:16,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:30:16,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220883231] [2023-08-29 18:30:16,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:30:16,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:30:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:30:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:30:16,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:30:16,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220883231] [2023-08-29 18:30:16,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220883231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:30:16,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:30:16,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 18:30:16,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45368488] [2023-08-29 18:30:16,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:30:16,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:30:16,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:30:16,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:30:16,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:30:16,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 495 out of 839 [2023-08-29 18:30:16,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 283 transitions, 614 flow. Second operand has 2 states, 2 states have (on average 495.5) internal successors, (991), 2 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:16,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:30:16,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 495 of 839 [2023-08-29 18:30:16,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand