./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_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_37-indirect_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 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --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 18:21:54,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:21:54,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:21:54,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:21:54,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:21:54,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:21:54,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:21:54,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:21:54,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:21:54,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:21:54,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:21:54,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:21:54,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:21:54,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:21:54,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:21:54,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:21:54,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:21:54,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:21:54,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:21:54,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:21:54,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:21:54,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:21:54,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:21:54,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:21:54,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:21:54,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:21:54,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:21:54,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:21:54,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:21:54,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:21:54,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:21:54,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:21:54,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:21:54,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:21:54,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:21:54,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:21:54,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:21:54,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:21:54,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:21:54,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:21:54,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:21:54,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:21:54,126 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:21:54,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:21:54,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:21:54,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:21:54,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:21:54,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:21:54,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:21:54,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:21:54,129 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:21:54,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:21:54,129 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:21:54,129 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:21:54,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:21:54,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:21:54,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:21:54,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:21:54,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:21:54,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:21:54,130 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:21:54,131 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:21:54,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:21:54,131 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:21:54,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:21:54,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:21:54,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:21:54,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:21:54,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:21:54,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:21:54,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:21:54,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:21:54,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:21:54,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:21:54,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:21:54,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:21:54,133 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:21:54,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:21:54,133 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:21:54,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:21:54,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:21:54,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:21:54,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:21:54,404 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:21:54,404 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:21:54,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-29 18:21:55,207 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:21:55,410 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:21:55,411 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-29 18:21:55,426 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75f77fda5/3516f332b47b4628a878e08ff96c1537/FLAG9ddbae7e4 [2023-08-29 18:21:55,443 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75f77fda5/3516f332b47b4628a878e08ff96c1537 [2023-08-29 18:21:55,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:21:55,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:21:55,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:21:55,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:21:55,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:21:55,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:21:55" (1/1) ... [2023-08-29 18:21:55,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c5a033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55, skipping insertion in model container [2023-08-29 18:21:55,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:21:55" (1/1) ... [2023-08-29 18:21:55,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:21:55,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:21:55,717 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_37-indirect_racing.i[30176,30189] [2023-08-29 18:21:55,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:21:55,743 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:21:55,768 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_37-indirect_racing.i[30176,30189] [2023-08-29 18:21:55,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:21:55,798 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:21:55,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55 WrapperNode [2023-08-29 18:21:55,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:21:55,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:21:55,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:21:55,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:21:55,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55" (1/1) ... [2023-08-29 18:21:55,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55" (1/1) ... [2023-08-29 18:21:55,829 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2023-08-29 18:21:55,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:21:55,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:21:55,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:21:55,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:21:55,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55" (1/1) ... [2023-08-29 18:21:55,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55" (1/1) ... [2023-08-29 18:21:55,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55" (1/1) ... [2023-08-29 18:21:55,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55" (1/1) ... [2023-08-29 18:21:55,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55" (1/1) ... [2023-08-29 18:21:55,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55" (1/1) ... [2023-08-29 18:21:55,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55" (1/1) ... [2023-08-29 18:21:55,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55" (1/1) ... [2023-08-29 18:21:55,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:21:55,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:21:55,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:21:55,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:21:55,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55" (1/1) ... [2023-08-29 18:21:55,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:21:55,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:21:55,894 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) [2023-08-29 18:21:55,896 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 18:21:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:21:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:21:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:21:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:21:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:21:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:21:55,922 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:21:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:21:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:21:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:21:55,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:21:55,923 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 18:21:56,011 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:21:56,012 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:21:56,301 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:21:56,305 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:21:56,306 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-29 18:21:56,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:21:56 BoogieIcfgContainer [2023-08-29 18:21:56,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:21:56,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:21:56,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:21:56,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:21:56,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:21:55" (1/3) ... [2023-08-29 18:21:56,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bc183e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:21:56, skipping insertion in model container [2023-08-29 18:21:56,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:21:55" (2/3) ... [2023-08-29 18:21:56,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bc183e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:21:56, skipping insertion in model container [2023-08-29 18:21:56,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:21:56" (3/3) ... [2023-08-29 18:21:56,312 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-08-29 18:21:56,318 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:21:56,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:21:56,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-29 18:21:56,325 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:21:56,420 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:21:56,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 169 transitions, 346 flow [2023-08-29 18:21:56,543 INFO L130 PetriNetUnfolder]: 17/215 cut-off events. [2023-08-29 18:21:56,543 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:21:56,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 215 events. 17/215 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 612 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2023-08-29 18:21:56,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 169 transitions, 346 flow [2023-08-29 18:21:56,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 169 transitions, 346 flow [2023-08-29 18:21:56,557 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:21:56,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 169 transitions, 346 flow [2023-08-29 18:21:56,569 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 169 transitions, 346 flow [2023-08-29 18:21:56,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 169 transitions, 346 flow [2023-08-29 18:21:56,615 INFO L130 PetriNetUnfolder]: 17/215 cut-off events. [2023-08-29 18:21:56,615 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:21:56,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 215 events. 17/215 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 612 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2023-08-29 18:21:56,620 INFO L119 LiptonReduction]: Number of co-enabled transitions 6864 [2023-08-29 18:21:59,583 INFO L134 LiptonReduction]: Checked pairs total: 38790 [2023-08-29 18:21:59,583 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-29 18:21:59,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:21:59,596 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;@2b2e6353, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:21:59,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-29 18:21:59,597 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 18:21:59,597 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:21:59,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:21:59,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 18:21:59,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-08-29 18:21:59,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:21:59,601 INFO L85 PathProgramCache]: Analyzing trace with hash 610, now seen corresponding path program 1 times [2023-08-29 18:21:59,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:21:59,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385857357] [2023-08-29 18:21:59,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:21:59,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:21:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:21:59,669 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 18:21:59,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:21:59,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385857357] [2023-08-29 18:21:59,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385857357] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:21:59,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:21:59,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 18:21:59,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821593024] [2023-08-29 18:21:59,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:21:59,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:21:59,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:21:59,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:21:59,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:21:59,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 298 [2023-08-29 18:21:59,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 156 flow. Second operand has 2 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 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 18:21:59,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:21:59,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 298 [2023-08-29 18:21:59,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:21:59,779 INFO L130 PetriNetUnfolder]: 118/505 cut-off events. [2023-08-29 18:21:59,779 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:21:59,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 505 events. 118/505 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2468 event pairs, 117 based on Foata normal form. 10/468 useless extension candidates. Maximal degree in co-relation 737. Up to 269 conditions per place. [2023-08-29 18:21:59,784 INFO L137 encePairwiseOnDemand]: 284/298 looper letters, 26 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2023-08-29 18:21:59,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 180 flow [2023-08-29 18:21:59,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:21:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:21:59,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 350 transitions. [2023-08-29 18:21:59,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.587248322147651 [2023-08-29 18:21:59,799 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 350 transitions. [2023-08-29 18:21:59,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 350 transitions. [2023-08-29 18:21:59,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:21:59,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 350 transitions. [2023-08-29 18:21:59,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 175.0) internal successors, (350), 2 states have internal predecessors, (350), 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 18:21:59,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 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 18:21:59,811 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 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 18:21:59,812 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 156 flow. Second operand 2 states and 350 transitions. [2023-08-29 18:21:59,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 180 flow [2023-08-29 18:21:59,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:21:59,817 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 128 flow [2023-08-29 18:21:59,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=128, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-29 18:21:59,822 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2023-08-29 18:21:59,822 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 128 flow [2023-08-29 18:21:59,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 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 18:21:59,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:21:59,823 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 18:21:59,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:21:59,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-08-29 18:21:59,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:21:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash 992541575, now seen corresponding path program 1 times [2023-08-29 18:21:59,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:21:59,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992591889] [2023-08-29 18:21:59,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:21:59,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:21:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:21:59,882 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:21:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:21:59,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:21:59,930 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:21:59,931 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-08-29 18:21:59,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-08-29 18:21:59,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-08-29 18:21:59,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-08-29 18:21:59,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-08-29 18:21:59,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-08-29 18:21:59,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-08-29 18:21:59,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-08-29 18:21:59,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-08-29 18:21:59,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-08-29 18:21:59,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-08-29 18:21:59,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-08-29 18:21:59,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-08-29 18:21:59,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-08-29 18:21:59,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-08-29 18:21:59,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-08-29 18:21:59,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-08-29 18:21:59,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-08-29 18:21:59,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-08-29 18:21:59,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:21:59,941 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 18:21:59,943 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:21:59,943 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:21:59,971 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:21:59,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 237 transitions, 492 flow [2023-08-29 18:22:00,014 INFO L130 PetriNetUnfolder]: 31/359 cut-off events. [2023-08-29 18:22:00,014 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:22:00,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 359 events. 31/359 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1331 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 217. Up to 9 conditions per place. [2023-08-29 18:22:00,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 237 transitions, 492 flow [2023-08-29 18:22:00,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 237 transitions, 492 flow [2023-08-29 18:22:00,019 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:22:00,019 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 237 transitions, 492 flow [2023-08-29 18:22:00,019 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 237 transitions, 492 flow [2023-08-29 18:22:00,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 237 transitions, 492 flow [2023-08-29 18:22:00,053 INFO L130 PetriNetUnfolder]: 31/359 cut-off events. [2023-08-29 18:22:00,053 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:22:00,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 359 events. 31/359 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1331 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 217. Up to 9 conditions per place. [2023-08-29 18:22:00,064 INFO L119 LiptonReduction]: Number of co-enabled transitions 23892 [2023-08-29 18:22:02,532 INFO L134 LiptonReduction]: Checked pairs total: 152721 [2023-08-29 18:22:02,533 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-29 18:22:02,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:22:02,535 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;@2b2e6353, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:22:02,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-29 18:22:02,535 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 18:22:02,535 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:22:02,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:22:02,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 18:22:02,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-29 18:22:02,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:22:02,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1057, now seen corresponding path program 1 times [2023-08-29 18:22:02,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:22:02,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286949572] [2023-08-29 18:22:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:22:02,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:22:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:22:02,543 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 18:22:02,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:22:02,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286949572] [2023-08-29 18:22:02,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286949572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:22:02,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:22:02,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 18:22:02,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515529725] [2023-08-29 18:22:02,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:22:02,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:22:02,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:22:02,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:22:02,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:22:02,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 376 [2023-08-29 18:22:02,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 129 transitions, 276 flow. Second operand has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 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 18:22:02,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:22:02,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 376 [2023-08-29 18:22:02,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:22:03,201 INFO L130 PetriNetUnfolder]: 3147/8660 cut-off events. [2023-08-29 18:22:03,201 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-29 18:22:03,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13783 conditions, 8660 events. 3147/8660 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 78921 event pairs, 3132 based on Foata normal form. 550/8333 useless extension candidates. Maximal degree in co-relation 9731. Up to 5043 conditions per place. [2023-08-29 18:22:03,237 INFO L137 encePairwiseOnDemand]: 358/376 looper letters, 39 selfloop transitions, 0 changer transitions 0/111 dead transitions. [2023-08-29 18:22:03,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 318 flow [2023-08-29 18:22:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:22:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:22:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 487 transitions. [2023-08-29 18:22:03,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6476063829787234 [2023-08-29 18:22:03,239 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 487 transitions. [2023-08-29 18:22:03,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 487 transitions. [2023-08-29 18:22:03,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:22:03,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 487 transitions. [2023-08-29 18:22:03,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 243.5) internal successors, (487), 2 states have internal predecessors, (487), 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 18:22:03,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 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 18:22:03,244 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 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 18:22:03,244 INFO L175 Difference]: Start difference. First operand has 118 places, 129 transitions, 276 flow. Second operand 2 states and 487 transitions. [2023-08-29 18:22:03,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 318 flow [2023-08-29 18:22:03,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 111 transitions, 318 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:22:03,248 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 240 flow [2023-08-29 18:22:03,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2023-08-29 18:22:03,249 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2023-08-29 18:22:03,249 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 240 flow [2023-08-29 18:22:03,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 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 18:22:03,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:22:03,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:22:03,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 18:22:03,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-29 18:22:03,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:22:03,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1053585025, now seen corresponding path program 1 times [2023-08-29 18:22:03,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:22:03,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549401395] [2023-08-29 18:22:03,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:22:03,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:22:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:22:03,311 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 18:22:03,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:22:03,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549401395] [2023-08-29 18:22:03,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549401395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:22:03,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:22:03,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:22:03,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798962252] [2023-08-29 18:22:03,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:22:03,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:22:03,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:22:03,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:22:03,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:22:03,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 376 [2023-08-29 18:22:03,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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 18:22:03,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:22:03,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 376 [2023-08-29 18:22:03,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:22:04,103 INFO L130 PetriNetUnfolder]: 4793/11771 cut-off events. [2023-08-29 18:22:04,103 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2023-08-29 18:22:04,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19481 conditions, 11771 events. 4793/11771 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 103655 event pairs, 1833 based on Foata normal form. 0/10923 useless extension candidates. Maximal degree in co-relation 19476. Up to 7431 conditions per place. [2023-08-29 18:22:04,182 INFO L137 encePairwiseOnDemand]: 370/376 looper letters, 58 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2023-08-29 18:22:04,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 122 transitions, 387 flow [2023-08-29 18:22:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:22:04,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:22:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2023-08-29 18:22:04,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5939716312056738 [2023-08-29 18:22:04,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2023-08-29 18:22:04,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2023-08-29 18:22:04,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:22:04,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2023-08-29 18:22:04,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 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 18:22:04,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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 18:22:04,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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 18:22:04,188 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 240 flow. Second operand 3 states and 670 transitions. [2023-08-29 18:22:04,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 122 transitions, 387 flow [2023-08-29 18:22:04,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 122 transitions, 387 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:22:04,190 INFO L231 Difference]: Finished difference. Result has 114 places, 109 transitions, 246 flow [2023-08-29 18:22:04,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=114, PETRI_TRANSITIONS=109} [2023-08-29 18:22:04,191 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -4 predicate places. [2023-08-29 18:22:04,191 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 109 transitions, 246 flow [2023-08-29 18:22:04,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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 18:22:04,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:22:04,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:22:04,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:22:04,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-29 18:22:04,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:22:04,192 INFO L85 PathProgramCache]: Analyzing trace with hash 905345641, now seen corresponding path program 1 times [2023-08-29 18:22:04,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:22:04,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910239280] [2023-08-29 18:22:04,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:22:04,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:22:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:22:04,223 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 18:22:04,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:22:04,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910239280] [2023-08-29 18:22:04,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910239280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:22:04,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:22:04,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:22:04,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976653997] [2023-08-29 18:22:04,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:22:04,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:22:04,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:22:04,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:22:04,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:22:04,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 376 [2023-08-29 18:22:04,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 109 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 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 18:22:04,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:22:04,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 376 [2023-08-29 18:22:04,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:22:04,821 INFO L130 PetriNetUnfolder]: 3258/9343 cut-off events. [2023-08-29 18:22:04,822 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2023-08-29 18:22:04,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14893 conditions, 9343 events. 3258/9343 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 88525 event pairs, 1551 based on Foata normal form. 0/8665 useless extension candidates. Maximal degree in co-relation 14887. Up to 5251 conditions per place. [2023-08-29 18:22:04,852 INFO L137 encePairwiseOnDemand]: 373/376 looper letters, 52 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-08-29 18:22:04,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 123 transitions, 382 flow [2023-08-29 18:22:04,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:22:04,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:22:04,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 687 transitions. [2023-08-29 18:22:04,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090425531914894 [2023-08-29 18:22:04,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 687 transitions. [2023-08-29 18:22:04,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 687 transitions. [2023-08-29 18:22:04,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:22:04,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 687 transitions. [2023-08-29 18:22:04,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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 18:22:04,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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 18:22:04,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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 18:22:04,858 INFO L175 Difference]: Start difference. First operand has 114 places, 109 transitions, 246 flow. Second operand 3 states and 687 transitions. [2023-08-29 18:22:04,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 123 transitions, 382 flow [2023-08-29 18:22:04,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 123 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:22:04,861 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 258 flow [2023-08-29 18:22:04,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2023-08-29 18:22:04,861 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2023-08-29 18:22:04,861 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 258 flow [2023-08-29 18:22:04,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 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 18:22:04,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:22:04,862 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 18:22:04,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:22:04,862 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-29 18:22:04,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:22:04,863 INFO L85 PathProgramCache]: Analyzing trace with hash 910954014, now seen corresponding path program 1 times [2023-08-29 18:22:04,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:22:04,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011440341] [2023-08-29 18:22:04,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:22:04,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:22:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:22:04,873 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:22:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:22:04,883 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:22:04,884 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:22:04,884 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-29 18:22:04,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-08-29 18:22:04,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-08-29 18:22:04,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-08-29 18:22:04,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-08-29 18:22:04,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-08-29 18:22:04,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-08-29 18:22:04,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-08-29 18:22:04,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-08-29 18:22:04,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-08-29 18:22:04,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-08-29 18:22:04,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-08-29 18:22:04,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-08-29 18:22:04,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-08-29 18:22:04,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-08-29 18:22:04,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-08-29 18:22:04,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-08-29 18:22:04,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-08-29 18:22:04,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-08-29 18:22:04,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-08-29 18:22:04,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-08-29 18:22:04,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-08-29 18:22:04,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-08-29 18:22:04,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-08-29 18:22:04,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-08-29 18:22:04,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 18:22:04,887 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 18:22:04,887 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:22:04,887 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:22:04,906 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:22:04,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 305 transitions, 640 flow [2023-08-29 18:22:04,955 INFO L130 PetriNetUnfolder]: 50/546 cut-off events. [2023-08-29 18:22:04,955 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:22:04,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 546 events. 50/546 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2334 event pairs, 1 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 367. Up to 16 conditions per place. [2023-08-29 18:22:04,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 305 transitions, 640 flow [2023-08-29 18:22:04,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 286 places, 305 transitions, 640 flow [2023-08-29 18:22:04,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:22:04,964 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 286 places, 305 transitions, 640 flow [2023-08-29 18:22:04,964 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 286 places, 305 transitions, 640 flow [2023-08-29 18:22:04,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 305 transitions, 640 flow [2023-08-29 18:22:05,011 INFO L130 PetriNetUnfolder]: 50/546 cut-off events. [2023-08-29 18:22:05,012 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:22:05,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 546 events. 50/546 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2334 event pairs, 1 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 367. Up to 16 conditions per place. [2023-08-29 18:22:05,034 INFO L119 LiptonReduction]: Number of co-enabled transitions 49500 [2023-08-29 18:22:07,776 INFO L134 LiptonReduction]: Checked pairs total: 340631 [2023-08-29 18:22:07,776 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-29 18:22:07,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:22:07,778 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;@2b2e6353, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:22:07,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-29 18:22:07,778 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 18:22:07,778 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:22:07,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:22:07,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 18:22:07,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 18:22:07,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:22:07,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1593, now seen corresponding path program 1 times [2023-08-29 18:22:07,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:22:07,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608077765] [2023-08-29 18:22:07,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:22:07,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:22:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:22:07,783 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 18:22:07,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:22:07,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608077765] [2023-08-29 18:22:07,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608077765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:22:07,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:22:07,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 18:22:07,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066021161] [2023-08-29 18:22:07,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:22:07,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:22:07,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:22:07,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:22:07,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:22:07,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 467 [2023-08-29 18:22:07,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 178 transitions, 386 flow. Second operand has 2 states, 2 states have (on average 275.5) internal successors, (551), 2 states have internal predecessors, (551), 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 18:22:07,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:22:07,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 467 [2023-08-29 18:22:07,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:22:17,016 INFO L130 PetriNetUnfolder]: 65024/131180 cut-off events. [2023-08-29 18:22:17,016 INFO L131 PetriNetUnfolder]: For 1935/1935 co-relation queries the response was YES. [2023-08-29 18:22:17,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223000 conditions, 131180 events. 65024/131180 cut-off events. For 1935/1935 co-relation queries the response was YES. Maximal size of possible extension queue 2690. Compared 1485045 event pairs, 64813 based on Foata normal form. 13055/133293 useless extension candidates. Maximal degree in co-relation 120537. Up to 90463 conditions per place. [2023-08-29 18:22:17,768 INFO L137 encePairwiseOnDemand]: 443/467 looper letters, 53 selfloop transitions, 0 changer transitions 0/154 dead transitions. [2023-08-29 18:22:17,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 154 transitions, 444 flow [2023-08-29 18:22:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:22:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:22:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 627 transitions. [2023-08-29 18:22:17,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.671306209850107 [2023-08-29 18:22:17,771 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 627 transitions. [2023-08-29 18:22:17,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 627 transitions. [2023-08-29 18:22:17,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:22:17,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 627 transitions. [2023-08-29 18:22:17,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 313.5) internal successors, (627), 2 states have internal predecessors, (627), 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 18:22:17,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 467.0) internal successors, (1401), 3 states have internal predecessors, (1401), 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 18:22:17,774 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 467.0) internal successors, (1401), 3 states have internal predecessors, (1401), 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 18:22:17,774 INFO L175 Difference]: Start difference. First operand has 162 places, 178 transitions, 386 flow. Second operand 2 states and 627 transitions. [2023-08-29 18:22:17,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 154 transitions, 444 flow [2023-08-29 18:22:17,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 154 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:22:17,778 INFO L231 Difference]: Finished difference. Result has 159 places, 154 transitions, 338 flow [2023-08-29 18:22:17,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=338, PETRI_PLACES=159, PETRI_TRANSITIONS=154} [2023-08-29 18:22:17,780 INFO L281 CegarLoopForPetriNet]: 162 programPoint places, -3 predicate places. [2023-08-29 18:22:17,780 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 154 transitions, 338 flow [2023-08-29 18:22:17,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 275.5) internal successors, (551), 2 states have internal predecessors, (551), 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 18:22:17,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:22:17,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:22:17,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 18:22:17,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 18:22:17,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:22:17,781 INFO L85 PathProgramCache]: Analyzing trace with hash 369368444, now seen corresponding path program 1 times [2023-08-29 18:22:17,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:22:17,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921897312] [2023-08-29 18:22:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:22:17,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:22:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:22:17,816 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 18:22:17,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:22:17,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921897312] [2023-08-29 18:22:17,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921897312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:22:17,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:22:17,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:22:17,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158499514] [2023-08-29 18:22:17,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:22:17,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:22:17,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:22:17,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:22:17,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:22:17,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 467 [2023-08-29 18:22:17,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 154 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 18:22:17,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:22:17,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 467 [2023-08-29 18:22:17,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:22:32,003 INFO L130 PetriNetUnfolder]: 113278/217596 cut-off events. [2023-08-29 18:22:32,003 INFO L131 PetriNetUnfolder]: For 2642/2642 co-relation queries the response was YES. [2023-08-29 18:22:32,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376105 conditions, 217596 events. 113278/217596 cut-off events. For 2642/2642 co-relation queries the response was YES. Maximal size of possible extension queue 3862. Compared 2445555 event pairs, 60422 based on Foata normal form. 0/202996 useless extension candidates. Maximal degree in co-relation 376099. Up to 155960 conditions per place. [2023-08-29 18:22:33,290 INFO L137 encePairwiseOnDemand]: 458/467 looper letters, 77 selfloop transitions, 3 changer transitions 0/167 dead transitions. [2023-08-29 18:22:33,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 167 transitions, 536 flow [2023-08-29 18:22:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:22:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:22:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 854 transitions. [2023-08-29 18:22:33,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609564596716631 [2023-08-29 18:22:33,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 854 transitions. [2023-08-29 18:22:33,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 854 transitions. [2023-08-29 18:22:33,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:22:33,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 854 transitions. [2023-08-29 18:22:33,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 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 18:22:33,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 18:22:33,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 18:22:33,298 INFO L175 Difference]: Start difference. First operand has 159 places, 154 transitions, 338 flow. Second operand 3 states and 854 transitions. [2023-08-29 18:22:33,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 167 transitions, 536 flow [2023-08-29 18:22:33,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 167 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:22:33,303 INFO L231 Difference]: Finished difference. Result has 156 places, 151 transitions, 347 flow [2023-08-29 18:22:33,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=156, PETRI_TRANSITIONS=151} [2023-08-29 18:22:33,304 INFO L281 CegarLoopForPetriNet]: 162 programPoint places, -6 predicate places. [2023-08-29 18:22:33,304 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 151 transitions, 347 flow [2023-08-29 18:22:33,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 18:22:33,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:22:33,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:22:33,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 18:22:33,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 18:22:33,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:22:33,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1914895153, now seen corresponding path program 1 times [2023-08-29 18:22:33,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:22:33,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471284325] [2023-08-29 18:22:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:22:33,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:22:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:22:33,321 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 18:22:33,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:22:33,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471284325] [2023-08-29 18:22:33,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471284325] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:22:33,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:22:33,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:22:33,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160648516] [2023-08-29 18:22:33,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:22:33,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:22:33,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:22:33,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:22:33,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:22:33,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 467 [2023-08-29 18:22:33,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 151 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 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 18:22:33,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:22:33,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 467 [2023-08-29 18:22:33,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:22:43,509 INFO L130 PetriNetUnfolder]: 71570/144146 cut-off events. [2023-08-29 18:22:43,513 INFO L131 PetriNetUnfolder]: For 4256/4256 co-relation queries the response was YES. [2023-08-29 18:22:43,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248206 conditions, 144146 events. 71570/144146 cut-off events. For 4256/4256 co-relation queries the response was YES. Maximal size of possible extension queue 2913. Compared 1649397 event pairs, 66976 based on Foata normal form. 0/133901 useless extension candidates. Maximal degree in co-relation 248199. Up to 100055 conditions per place. [2023-08-29 18:22:44,327 INFO L137 encePairwiseOnDemand]: 464/467 looper letters, 66 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2023-08-29 18:22:44,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 165 transitions, 511 flow [2023-08-29 18:22:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:22:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:22:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-08-29 18:22:44,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6288365453247681 [2023-08-29 18:22:44,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-08-29 18:22:44,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-08-29 18:22:44,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:22:44,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-08-29 18:22:44,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 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 18:22:44,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 18:22:44,337 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 18:22:44,337 INFO L175 Difference]: Start difference. First operand has 156 places, 151 transitions, 347 flow. Second operand 3 states and 881 transitions. [2023-08-29 18:22:44,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 165 transitions, 511 flow [2023-08-29 18:22:44,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 165 transitions, 511 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:22:44,341 INFO L231 Difference]: Finished difference. Result has 159 places, 152 transitions, 359 flow [2023-08-29 18:22:44,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=159, PETRI_TRANSITIONS=152} [2023-08-29 18:22:44,342 INFO L281 CegarLoopForPetriNet]: 162 programPoint places, -3 predicate places. [2023-08-29 18:22:44,342 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 152 transitions, 359 flow [2023-08-29 18:22:44,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 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 18:22:44,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:22:44,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:22:44,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 18:22:44,343 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 18:22:44,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:22:44,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1442150716, now seen corresponding path program 1 times [2023-08-29 18:22:44,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:22:44,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405095286] [2023-08-29 18:22:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:22:44,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:22:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:22:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:22:44,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:22:44,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405095286] [2023-08-29 18:22:44,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405095286] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:22:44,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640669717] [2023-08-29 18:22:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:22:44,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:22:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:22:44,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:22:44,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 18:22:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:22:44,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:22:44,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:22:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:22:44,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:22:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:22:44,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640669717] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:22:44,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:22:44,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:22:44,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38313196] [2023-08-29 18:22:44,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:22:44,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:22:44,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:22:44,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:22:44,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:22:44,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 467 [2023-08-29 18:22:44,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 152 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 272.2857142857143) internal successors, (1906), 7 states have internal predecessors, (1906), 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 18:22:44,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:22:44,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 467 [2023-08-29 18:22:44,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:22:47,238 INFO L130 PetriNetUnfolder]: 18561/38221 cut-off events. [2023-08-29 18:22:47,238 INFO L131 PetriNetUnfolder]: For 8884/8884 co-relation queries the response was YES. [2023-08-29 18:22:47,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71824 conditions, 38221 events. 18561/38221 cut-off events. For 8884/8884 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 377617 event pairs, 3747 based on Foata normal form. 2707/40022 useless extension candidates. Maximal degree in co-relation 71815. Up to 18532 conditions per place. [2023-08-29 18:22:47,395 INFO L137 encePairwiseOnDemand]: 464/467 looper letters, 118 selfloop transitions, 4 changer transitions 0/207 dead transitions. [2023-08-29 18:22:47,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 207 transitions, 714 flow [2023-08-29 18:22:47,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:22:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:22:47,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1742 transitions. [2023-08-29 18:22:47,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216987865810135 [2023-08-29 18:22:47,399 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1742 transitions. [2023-08-29 18:22:47,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1742 transitions. [2023-08-29 18:22:47,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:22:47,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1742 transitions. [2023-08-29 18:22:47,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 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 18:22:47,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 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 18:22:47,405 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 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 18:22:47,405 INFO L175 Difference]: Start difference. First operand has 159 places, 152 transitions, 359 flow. Second operand 6 states and 1742 transitions. [2023-08-29 18:22:47,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 207 transitions, 714 flow [2023-08-29 18:22:47,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 207 transitions, 706 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-29 18:22:47,414 INFO L231 Difference]: Finished difference. Result has 143 places, 130 transitions, 306 flow [2023-08-29 18:22:47,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=143, PETRI_TRANSITIONS=130} [2023-08-29 18:22:47,415 INFO L281 CegarLoopForPetriNet]: 162 programPoint places, -19 predicate places. [2023-08-29 18:22:47,415 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 130 transitions, 306 flow [2023-08-29 18:22:47,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.2857142857143) internal successors, (1906), 7 states have internal predecessors, (1906), 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 18:22:47,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:22:47,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:22:47,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 18:22:47,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-29 18:22:47,620 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 18:22:47,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:22:47,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1106901213, now seen corresponding path program 1 times [2023-08-29 18:22:47,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:22:47,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791273584] [2023-08-29 18:22:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:22:47,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:22:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:22:48,012 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 18:22:48,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:22:48,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791273584] [2023-08-29 18:22:48,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791273584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:22:48,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:22:48,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 18:22:48,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627197920] [2023-08-29 18:22:48,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:22:48,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:22:48,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:22:48,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:22:48,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:22:48,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 467 [2023-08-29 18:22:48,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 130 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 208.66666666666666) internal successors, (1252), 6 states have internal predecessors, (1252), 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 18:22:48,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:22:48,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 467 [2023-08-29 18:22:48,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand