./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c 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 /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_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 a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:49:34,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:49:34,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:49:34,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:49:34,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:49:34,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:49:34,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:49:34,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:49:34,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:49:34,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:49:34,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:49:34,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:49:34,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:49:34,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:49:34,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:49:34,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:49:34,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:49:34,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:49:34,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:49:34,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:49:34,980 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:49:34,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:49:34,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:49:34,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:49:34,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:49:34,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:49:34,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:49:34,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:49:34,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:49:34,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:49:34,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:49:34,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:49:34,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:49:34,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:49:34,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:49:34,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:49:34,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:49:34,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:49:34,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:49:34,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:49:34,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:49:35,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:49:35,002 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:49:35,036 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:49:35,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:49:35,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:49:35,039 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:49:35,040 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:49:35,040 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:49:35,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:49:35,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:49:35,041 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:49:35,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:49:35,042 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:49:35,042 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:49:35,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:49:35,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:49:35,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:49:35,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:49:35,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:49:35,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:49:35,044 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:49:35,045 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:49:35,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:49:35,045 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:49:35,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:49:35,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:49:35,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:49:35,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:49:35,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:49:35,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:49:35,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:49:35,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:49:35,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:49:35,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:49:35,048 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:49:35,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:49:35,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:49:35,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 [2022-04-18 15:49:35,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:49:35,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:49:35,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:49:35,281 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:49:35,283 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:49:35,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2022-04-18 15:49:35,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c355db6ad/76807540672248f8860cfc16764f672d/FLAGb7a616644 [2022-04-18 15:49:35,811 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:49:35,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2022-04-18 15:49:35,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c355db6ad/76807540672248f8860cfc16764f672d/FLAGb7a616644 [2022-04-18 15:49:36,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c355db6ad/76807540672248f8860cfc16764f672d [2022-04-18 15:49:36,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:49:36,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:49:36,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:49:36,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:49:36,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:49:36,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:49:36" (1/1) ... [2022-04-18 15:49:36,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46c5709a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:36, skipping insertion in model container [2022-04-18 15:49:36,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:49:36" (1/1) ... [2022-04-18 15:49:36,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:49:36,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:49:36,680 WARN L230 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_19-callback_racing.i[30212,30225] [2022-04-18 15:49:36,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:49:36,723 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:49:36,762 WARN L230 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_19-callback_racing.i[30212,30225] [2022-04-18 15:49:36,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:49:36,819 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:49:36,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:36 WrapperNode [2022-04-18 15:49:36,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:49:36,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:49:36,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:49:36,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:49:36,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:36" (1/1) ... [2022-04-18 15:49:36,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:36" (1/1) ... [2022-04-18 15:49:36,880 INFO L137 Inliner]: procedures = 173, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 152 [2022-04-18 15:49:36,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:49:36,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:49:36,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:49:36,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:49:36,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:36" (1/1) ... [2022-04-18 15:49:36,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:36" (1/1) ... [2022-04-18 15:49:36,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:36" (1/1) ... [2022-04-18 15:49:36,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:36" (1/1) ... [2022-04-18 15:49:36,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:36" (1/1) ... [2022-04-18 15:49:36,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:36" (1/1) ... [2022-04-18 15:49:36,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:36" (1/1) ... [2022-04-18 15:49:36,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:49:36,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:49:36,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:49:36,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:49:36,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:36" (1/1) ... [2022-04-18 15:49:36,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:49:36,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:49:36,973 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) [2022-04-18 15:49:36,995 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 [2022-04-18 15:49:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:49:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:49:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:49:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:49:37,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:49:37,011 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 15:49:37,011 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 15:49:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:49:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:49:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:49:37,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:49:37,013 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:49:37,163 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:49:37,165 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:49:37,472 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:49:37,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:49:37,481 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-04-18 15:49:37,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:49:37 BoogieIcfgContainer [2022-04-18 15:49:37,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:49:37,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:49:37,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:49:37,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:49:37,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:49:36" (1/3) ... [2022-04-18 15:49:37,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715a8fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:49:37, skipping insertion in model container [2022-04-18 15:49:37,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:36" (2/3) ... [2022-04-18 15:49:37,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715a8fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:49:37, skipping insertion in model container [2022-04-18 15:49:37,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:49:37" (3/3) ... [2022-04-18 15:49:37,491 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2022-04-18 15:49:37,495 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:49:37,498 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:49:37,498 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-04-18 15:49:37,498 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:49:37,545 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 15:49:37,599 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:37,610 INFO L340 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 [2022-04-18 15:49:37,611 INFO L341 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-04-18 15:49:37,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 158 places, 170 transitions, 348 flow [2022-04-18 15:49:37,735 INFO L129 PetriNetUnfolder]: 26/268 cut-off events. [2022-04-18 15:49:37,735 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:49:37,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 268 events. 26/268 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 835 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2022-04-18 15:49:37,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 170 transitions, 348 flow [2022-04-18 15:49:37,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 170 transitions, 348 flow [2022-04-18 15:49:37,770 INFO L129 PetriNetUnfolder]: 5/90 cut-off events. [2022-04-18 15:49:37,771 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:37,771 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:37,772 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:37,772 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 15:49:37,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:37,779 INFO L85 PathProgramCache]: Analyzing trace with hash 452270645, now seen corresponding path program 1 times [2022-04-18 15:49:37,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:37,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563786078] [2022-04-18 15:49:37,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:37,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:38,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:38,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563786078] [2022-04-18 15:49:38,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563786078] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:38,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:38,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:38,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766196194] [2022-04-18 15:49:38,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:38,060 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:38,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:38,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:38,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:38,097 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 170 [2022-04-18 15:49:38,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 170 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2022-04-18 15:49:38,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:38,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 170 [2022-04-18 15:49:38,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:38,241 INFO L129 PetriNetUnfolder]: 39/571 cut-off events. [2022-04-18 15:49:38,241 INFO L130 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2022-04-18 15:49:38,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 571 events. 39/571 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2368 event pairs, 8 based on Foata normal form. 87/606 useless extension candidates. Maximal degree in co-relation 507. Up to 61 conditions per place. [2022-04-18 15:49:38,249 INFO L132 encePairwiseOnDemand]: 149/170 looper letters, 18 selfloop transitions, 6 changer transitions 0/164 dead transitions. [2022-04-18 15:49:38,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 164 transitions, 387 flow [2022-04-18 15:49:38,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2022-04-18 15:49:38,271 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9235294117647059 [2022-04-18 15:49:38,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2022-04-18 15:49:38,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2022-04-18 15:49:38,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:38,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2022-04-18 15:49:38,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2022-04-18 15:49:38,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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) [2022-04-18 15:49:38,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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) [2022-04-18 15:49:38,292 INFO L186 Difference]: Start difference. First operand has 158 places, 170 transitions, 348 flow. Second operand 3 states and 471 transitions. [2022-04-18 15:49:38,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 164 transitions, 387 flow [2022-04-18 15:49:38,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 164 transitions, 387 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:38,302 INFO L242 Difference]: Finished difference. Result has 159 places, 159 transitions, 360 flow [2022-04-18 15:49:38,304 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=159, PETRI_TRANSITIONS=159} [2022-04-18 15:49:38,308 INFO L335 CegarLoopForPetriNet]: 158 programPoint places, 1 predicate places. [2022-04-18 15:49:38,309 INFO L478 AbstractCegarLoop]: Abstraction has has 159 places, 159 transitions, 360 flow [2022-04-18 15:49:38,309 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2022-04-18 15:49:38,310 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:38,311 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:38,311 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:49:38,311 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 15:49:38,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:38,312 INFO L85 PathProgramCache]: Analyzing trace with hash -670256798, now seen corresponding path program 1 times [2022-04-18 15:49:38,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:38,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528391426] [2022-04-18 15:49:38,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:38,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:38,366 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:49:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:38,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:49:38,439 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:49:38,441 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-04-18 15:49:38,442 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2022-04-18 15:49:38,443 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2022-04-18 15:49:38,443 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2022-04-18 15:49:38,443 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2022-04-18 15:49:38,443 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2022-04-18 15:49:38,444 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2022-04-18 15:49:38,444 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2022-04-18 15:49:38,444 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:49:38,448 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 15:49:38,449 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:49:38,449 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:49:38,480 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 15:49:38,485 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:38,491 INFO L340 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 [2022-04-18 15:49:38,492 INFO L341 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-04-18 15:49:38,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 182 places, 196 transitions, 410 flow [2022-04-18 15:49:38,545 INFO L129 PetriNetUnfolder]: 43/423 cut-off events. [2022-04-18 15:49:38,545 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 15:49:38,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 423 events. 43/423 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1696 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 270. Up to 9 conditions per place. [2022-04-18 15:49:38,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 196 transitions, 410 flow [2022-04-18 15:49:38,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 196 transitions, 410 flow [2022-04-18 15:49:38,559 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2022-04-18 15:49:38,559 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:38,559 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:38,559 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:38,563 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 15:49:38,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:38,563 INFO L85 PathProgramCache]: Analyzing trace with hash 711007005, now seen corresponding path program 1 times [2022-04-18 15:49:38,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:38,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219474406] [2022-04-18 15:49:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:38,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:38,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:38,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219474406] [2022-04-18 15:49:38,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219474406] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:38,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:38,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:38,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470733858] [2022-04-18 15:49:38,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:38,637 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:38,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:38,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:38,639 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 196 [2022-04-18 15:49:38,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 196 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2022-04-18 15:49:38,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:38,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 196 [2022-04-18 15:49:38,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:39,063 INFO L129 PetriNetUnfolder]: 359/2650 cut-off events. [2022-04-18 15:49:39,063 INFO L130 PetriNetUnfolder]: For 104/141 co-relation queries the response was YES. [2022-04-18 15:49:39,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3355 conditions, 2650 events. 359/2650 cut-off events. For 104/141 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 20786 event pairs, 117 based on Foata normal form. 597/2945 useless extension candidates. Maximal degree in co-relation 2528. Up to 469 conditions per place. [2022-04-18 15:49:39,083 INFO L132 encePairwiseOnDemand]: 169/196 looper letters, 25 selfloop transitions, 8 changer transitions 0/190 dead transitions. [2022-04-18 15:49:39,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 190 transitions, 475 flow [2022-04-18 15:49:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:39,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:39,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2022-04-18 15:49:39,085 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9149659863945578 [2022-04-18 15:49:39,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2022-04-18 15:49:39,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2022-04-18 15:49:39,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:39,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2022-04-18 15:49:39,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 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) [2022-04-18 15:49:39,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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) [2022-04-18 15:49:39,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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) [2022-04-18 15:49:39,090 INFO L186 Difference]: Start difference. First operand has 182 places, 196 transitions, 410 flow. Second operand 3 states and 538 transitions. [2022-04-18 15:49:39,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 190 transitions, 475 flow [2022-04-18 15:49:39,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 190 transitions, 475 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:39,098 INFO L242 Difference]: Finished difference. Result has 182 places, 183 transitions, 432 flow [2022-04-18 15:49:39,099 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=182, PETRI_TRANSITIONS=183} [2022-04-18 15:49:39,100 INFO L335 CegarLoopForPetriNet]: 182 programPoint places, 0 predicate places. [2022-04-18 15:49:39,100 INFO L478 AbstractCegarLoop]: Abstraction has has 182 places, 183 transitions, 432 flow [2022-04-18 15:49:39,100 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2022-04-18 15:49:39,100 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:39,101 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:39,102 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:49:39,102 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 15:49:39,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:39,103 INFO L85 PathProgramCache]: Analyzing trace with hash 549744593, now seen corresponding path program 1 times [2022-04-18 15:49:39,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:39,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294179270] [2022-04-18 15:49:39,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:39,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:39,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:39,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:39,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294179270] [2022-04-18 15:49:39,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294179270] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:39,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:39,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:39,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200917100] [2022-04-18 15:49:39,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:39,152 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:39,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:39,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:39,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:39,154 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 196 [2022-04-18 15:49:39,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 183 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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) [2022-04-18 15:49:39,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:39,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 196 [2022-04-18 15:49:39,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:39,447 INFO L129 PetriNetUnfolder]: 142/1819 cut-off events. [2022-04-18 15:49:39,447 INFO L130 PetriNetUnfolder]: For 149/167 co-relation queries the response was YES. [2022-04-18 15:49:39,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2241 conditions, 1819 events. 142/1819 cut-off events. For 149/167 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 13215 event pairs, 39 based on Foata normal form. 0/1653 useless extension candidates. Maximal degree in co-relation 1643. Up to 179 conditions per place. [2022-04-18 15:49:39,460 INFO L132 encePairwiseOnDemand]: 193/196 looper letters, 13 selfloop transitions, 2 changer transitions 0/187 dead transitions. [2022-04-18 15:49:39,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 187 transitions, 470 flow [2022-04-18 15:49:39,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:39,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-04-18 15:49:39,462 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8843537414965986 [2022-04-18 15:49:39,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-04-18 15:49:39,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-04-18 15:49:39,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:39,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-04-18 15:49:39,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2022-04-18 15:49:39,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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) [2022-04-18 15:49:39,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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) [2022-04-18 15:49:39,466 INFO L186 Difference]: Start difference. First operand has 182 places, 183 transitions, 432 flow. Second operand 3 states and 520 transitions. [2022-04-18 15:49:39,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 187 transitions, 470 flow [2022-04-18 15:49:39,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 187 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:49:39,474 INFO L242 Difference]: Finished difference. Result has 183 places, 184 transitions, 428 flow [2022-04-18 15:49:39,475 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=183, PETRI_TRANSITIONS=184} [2022-04-18 15:49:39,477 INFO L335 CegarLoopForPetriNet]: 182 programPoint places, 1 predicate places. [2022-04-18 15:49:39,477 INFO L478 AbstractCegarLoop]: Abstraction has has 183 places, 184 transitions, 428 flow [2022-04-18 15:49:39,477 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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) [2022-04-18 15:49:39,478 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:39,478 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:39,478 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:49:39,478 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 15:49:39,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:39,481 INFO L85 PathProgramCache]: Analyzing trace with hash -892155764, now seen corresponding path program 1 times [2022-04-18 15:49:39,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:39,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453134980] [2022-04-18 15:49:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:39,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:39,519 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:49:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:39,558 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:49:39,560 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:49:39,560 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-04-18 15:49:39,560 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-04-18 15:49:39,560 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-04-18 15:49:39,561 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-04-18 15:49:39,561 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-04-18 15:49:39,561 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-04-18 15:49:39,565 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-04-18 15:49:39,565 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-04-18 15:49:39,565 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-04-18 15:49:39,565 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:49:39,566 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 15:49:39,566 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:49:39,566 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:49:39,605 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 15:49:39,612 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:39,616 INFO L340 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 [2022-04-18 15:49:39,617 INFO L341 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-04-18 15:49:39,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 206 places, 222 transitions, 474 flow [2022-04-18 15:49:39,686 INFO L129 PetriNetUnfolder]: 65/623 cut-off events. [2022-04-18 15:49:39,686 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 15:49:39,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 623 events. 65/623 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2829 event pairs, 1 based on Foata normal form. 0/527 useless extension candidates. Maximal degree in co-relation 431. Up to 16 conditions per place. [2022-04-18 15:49:39,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 222 transitions, 474 flow [2022-04-18 15:49:39,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 222 transitions, 474 flow [2022-04-18 15:49:39,703 INFO L129 PetriNetUnfolder]: 5/90 cut-off events. [2022-04-18 15:49:39,703 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:39,704 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:39,704 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:39,704 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-04-18 15:49:39,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:39,705 INFO L85 PathProgramCache]: Analyzing trace with hash 601872437, now seen corresponding path program 1 times [2022-04-18 15:49:39,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:39,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700921601] [2022-04-18 15:49:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:39,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:39,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:39,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700921601] [2022-04-18 15:49:39,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700921601] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:39,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:39,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:39,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593475471] [2022-04-18 15:49:39,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:39,758 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:39,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:39,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:39,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:39,762 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 222 [2022-04-18 15:49:39,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 222 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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) [2022-04-18 15:49:39,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:39,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 222 [2022-04-18 15:49:39,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:41,375 INFO L129 PetriNetUnfolder]: 2391/12114 cut-off events. [2022-04-18 15:49:41,375 INFO L130 PetriNetUnfolder]: For 737/1064 co-relation queries the response was YES. [2022-04-18 15:49:41,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16123 conditions, 12114 events. 2391/12114 cut-off events. For 737/1064 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 132206 event pairs, 842 based on Foata normal form. 3499/14042 useless extension candidates. Maximal degree in co-relation 8385. Up to 2804 conditions per place. [2022-04-18 15:49:41,488 INFO L132 encePairwiseOnDemand]: 189/222 looper letters, 32 selfloop transitions, 10 changer transitions 0/216 dead transitions. [2022-04-18 15:49:41,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 216 transitions, 567 flow [2022-04-18 15:49:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:41,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2022-04-18 15:49:41,491 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9084084084084084 [2022-04-18 15:49:41,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2022-04-18 15:49:41,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2022-04-18 15:49:41,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:41,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2022-04-18 15:49:41,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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) [2022-04-18 15:49:41,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2022-04-18 15:49:41,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2022-04-18 15:49:41,496 INFO L186 Difference]: Start difference. First operand has 206 places, 222 transitions, 474 flow. Second operand 3 states and 605 transitions. [2022-04-18 15:49:41,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 216 transitions, 567 flow [2022-04-18 15:49:41,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 216 transitions, 567 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:41,503 INFO L242 Difference]: Finished difference. Result has 205 places, 207 transitions, 506 flow [2022-04-18 15:49:41,503 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=205, PETRI_TRANSITIONS=207} [2022-04-18 15:49:41,504 INFO L335 CegarLoopForPetriNet]: 206 programPoint places, -1 predicate places. [2022-04-18 15:49:41,504 INFO L478 AbstractCegarLoop]: Abstraction has has 205 places, 207 transitions, 506 flow [2022-04-18 15:49:41,505 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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) [2022-04-18 15:49:41,505 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:41,505 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:41,506 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:49:41,506 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-04-18 15:49:41,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:41,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1673293487, now seen corresponding path program 1 times [2022-04-18 15:49:41,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:41,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668649894] [2022-04-18 15:49:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:41,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:41,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:41,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668649894] [2022-04-18 15:49:41,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668649894] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:41,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:41,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:41,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696728321] [2022-04-18 15:49:41,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:41,589 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:41,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:41,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:41,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:41,590 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 222 [2022-04-18 15:49:41,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 207 transitions, 506 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2022-04-18 15:49:41,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:41,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 222 [2022-04-18 15:49:41,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:42,580 INFO L129 PetriNetUnfolder]: 904/7791 cut-off events. [2022-04-18 15:49:42,580 INFO L130 PetriNetUnfolder]: For 873/1070 co-relation queries the response was YES. [2022-04-18 15:49:42,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9961 conditions, 7791 events. 904/7791 cut-off events. For 873/1070 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 84361 event pairs, 341 based on Foata normal form. 0/7009 useless extension candidates. Maximal degree in co-relation 7281. Up to 1026 conditions per place. [2022-04-18 15:49:42,643 INFO L132 encePairwiseOnDemand]: 219/222 looper letters, 15 selfloop transitions, 2 changer transitions 0/211 dead transitions. [2022-04-18 15:49:42,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 211 transitions, 548 flow [2022-04-18 15:49:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:42,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 582 transitions. [2022-04-18 15:49:42,646 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8738738738738738 [2022-04-18 15:49:42,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 582 transitions. [2022-04-18 15:49:42,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 582 transitions. [2022-04-18 15:49:42,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:42,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 582 transitions. [2022-04-18 15:49:42,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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) [2022-04-18 15:49:42,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2022-04-18 15:49:42,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2022-04-18 15:49:42,653 INFO L186 Difference]: Start difference. First operand has 205 places, 207 transitions, 506 flow. Second operand 3 states and 582 transitions. [2022-04-18 15:49:42,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 211 transitions, 548 flow [2022-04-18 15:49:42,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 211 transitions, 528 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:49:42,663 INFO L242 Difference]: Finished difference. Result has 206 places, 208 transitions, 498 flow [2022-04-18 15:49:42,664 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=206, PETRI_TRANSITIONS=208} [2022-04-18 15:49:42,666 INFO L335 CegarLoopForPetriNet]: 206 programPoint places, 0 predicate places. [2022-04-18 15:49:42,667 INFO L478 AbstractCegarLoop]: Abstraction has has 206 places, 208 transitions, 498 flow [2022-04-18 15:49:42,668 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2022-04-18 15:49:42,668 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:42,668 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:42,668 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:49:42,668 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-04-18 15:49:42,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash -761781340, now seen corresponding path program 1 times [2022-04-18 15:49:42,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:42,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118570710] [2022-04-18 15:49:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:42,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:42,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:42,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:42,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118570710] [2022-04-18 15:49:42,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118570710] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:49:42,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103147392] [2022-04-18 15:49:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:42,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:49:42,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:49:42,718 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) [2022-04-18 15:49:42,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-18 15:49:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:42,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-18 15:49:42,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:49:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:49:42,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:49:42,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103147392] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:42,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:49:42,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-04-18 15:49:42,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281443324] [2022-04-18 15:49:42,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:42,916 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:42,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:42,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:42,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:49:42,918 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 222 [2022-04-18 15:49:42,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 208 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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) [2022-04-18 15:49:42,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:42,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 222 [2022-04-18 15:49:42,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:44,396 INFO L129 PetriNetUnfolder]: 1566/12039 cut-off events. [2022-04-18 15:49:44,397 INFO L130 PetriNetUnfolder]: For 431/501 co-relation queries the response was YES. [2022-04-18 15:49:44,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14945 conditions, 12039 events. 1566/12039 cut-off events. For 431/501 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 145507 event pairs, 614 based on Foata normal form. 6/10596 useless extension candidates. Maximal degree in co-relation 14886. Up to 1833 conditions per place. [2022-04-18 15:49:44,478 INFO L132 encePairwiseOnDemand]: 219/222 looper letters, 13 selfloop transitions, 2 changer transitions 0/211 dead transitions. [2022-04-18 15:49:44,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 211 transitions, 534 flow [2022-04-18 15:49:44,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:44,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:44,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2022-04-18 15:49:44,480 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8753753753753754 [2022-04-18 15:49:44,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2022-04-18 15:49:44,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2022-04-18 15:49:44,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:44,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2022-04-18 15:49:44,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 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) [2022-04-18 15:49:44,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2022-04-18 15:49:44,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2022-04-18 15:49:44,484 INFO L186 Difference]: Start difference. First operand has 206 places, 208 transitions, 498 flow. Second operand 3 states and 583 transitions. [2022-04-18 15:49:44,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 211 transitions, 534 flow [2022-04-18 15:49:44,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 211 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:49:44,489 INFO L242 Difference]: Finished difference. Result has 208 places, 209 transitions, 508 flow [2022-04-18 15:49:44,490 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=208, PETRI_TRANSITIONS=209} [2022-04-18 15:49:44,491 INFO L335 CegarLoopForPetriNet]: 206 programPoint places, 2 predicate places. [2022-04-18 15:49:44,491 INFO L478 AbstractCegarLoop]: Abstraction has has 208 places, 209 transitions, 508 flow [2022-04-18 15:49:44,492 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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) [2022-04-18 15:49:44,492 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:44,492 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:44,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-18 15:49:44,705 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:49:44,706 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-04-18 15:49:44,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1132686749, now seen corresponding path program 1 times [2022-04-18 15:49:44,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:44,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895680038] [2022-04-18 15:49:44,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:44,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:49:44,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:44,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895680038] [2022-04-18 15:49:44,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895680038] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:49:44,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115536246] [2022-04-18 15:49:44,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:44,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:49:44,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:49:44,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:49:44,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-18 15:49:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:44,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:49:44,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:49:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:49:45,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:49:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:49:45,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115536246] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:49:45,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:49:45,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 15:49:45,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439975836] [2022-04-18 15:49:45,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:49:45,117 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 15:49:45,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:45,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 15:49:45,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:49:45,120 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 222 [2022-04-18 15:49:45,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 209 transitions, 508 flow. Second operand has 10 states, 10 states have (on average 189.3) internal successors, (1893), 10 states have internal predecessors, (1893), 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) [2022-04-18 15:49:45,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:45,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 222 [2022-04-18 15:49:45,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:46,504 INFO L129 PetriNetUnfolder]: 1306/9745 cut-off events. [2022-04-18 15:49:46,504 INFO L130 PetriNetUnfolder]: For 391/445 co-relation queries the response was YES. [2022-04-18 15:49:46,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12093 conditions, 9745 events. 1306/9745 cut-off events. For 391/445 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 112298 event pairs, 549 based on Foata normal form. 8/8590 useless extension candidates. Maximal degree in co-relation 11972. Up to 1523 conditions per place. [2022-04-18 15:49:46,583 INFO L132 encePairwiseOnDemand]: 216/222 looper letters, 16 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2022-04-18 15:49:46,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 219 transitions, 580 flow [2022-04-18 15:49:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:49:46,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:49:46,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1710 transitions. [2022-04-18 15:49:46,589 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8558558558558559 [2022-04-18 15:49:46,589 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1710 transitions. [2022-04-18 15:49:46,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1710 transitions. [2022-04-18 15:49:46,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:46,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1710 transitions. [2022-04-18 15:49:46,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 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) [2022-04-18 15:49:46,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 222.0) internal successors, (2220), 10 states have internal predecessors, (2220), 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) [2022-04-18 15:49:46,598 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 222.0) internal successors, (2220), 10 states have internal predecessors, (2220), 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) [2022-04-18 15:49:46,598 INFO L186 Difference]: Start difference. First operand has 208 places, 209 transitions, 508 flow. Second operand 9 states and 1710 transitions. [2022-04-18 15:49:46,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 219 transitions, 580 flow [2022-04-18 15:49:46,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 219 transitions, 578 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:49:46,604 INFO L242 Difference]: Finished difference. Result has 218 places, 215 transitions, 556 flow [2022-04-18 15:49:46,604 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=556, PETRI_PLACES=218, PETRI_TRANSITIONS=215} [2022-04-18 15:49:46,606 INFO L335 CegarLoopForPetriNet]: 206 programPoint places, 12 predicate places. [2022-04-18 15:49:46,606 INFO L478 AbstractCegarLoop]: Abstraction has has 218 places, 215 transitions, 556 flow [2022-04-18 15:49:46,607 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 189.3) internal successors, (1893), 10 states have internal predecessors, (1893), 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) [2022-04-18 15:49:46,607 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:46,608 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:46,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-18 15:49:46,823 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-18 15:49:46,823 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-04-18 15:49:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash -33607039, now seen corresponding path program 1 times [2022-04-18 15:49:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:46,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409510717] [2022-04-18 15:49:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:46,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:46,850 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:49:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:46,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:49:46,889 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:49:46,889 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-04-18 15:49:46,889 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2022-04-18 15:49:46,889 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2022-04-18 15:49:46,890 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2022-04-18 15:49:46,890 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2022-04-18 15:49:46,890 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2022-04-18 15:49:46,890 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2022-04-18 15:49:46,890 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2022-04-18 15:49:46,890 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2022-04-18 15:49:46,890 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2022-04-18 15:49:46,891 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:49:46,891 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-18 15:49:46,891 WARN L232 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:49:46,891 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-04-18 15:49:46,911 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-04-18 15:49:46,913 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:46,913 INFO L340 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 [2022-04-18 15:49:46,913 INFO L341 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-04-18 15:49:46,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 230 places, 248 transitions, 540 flow [2022-04-18 15:49:47,000 INFO L129 PetriNetUnfolder]: 99/915 cut-off events. [2022-04-18 15:49:47,000 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-04-18 15:49:47,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 915 events. 99/915 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4483 event pairs, 6 based on Foata normal form. 0/776 useless extension candidates. Maximal degree in co-relation 643. Up to 32 conditions per place. [2022-04-18 15:49:47,008 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 248 transitions, 540 flow [2022-04-18 15:49:47,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 248 transitions, 540 flow [2022-04-18 15:49:47,018 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2022-04-18 15:49:47,018 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:47,018 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:47,018 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:47,018 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-04-18 15:49:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:47,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1480897483, now seen corresponding path program 1 times [2022-04-18 15:49:47,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:47,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686784244] [2022-04-18 15:49:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:47,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:47,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:47,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686784244] [2022-04-18 15:49:47,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686784244] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:47,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:47,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:47,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875909148] [2022-04-18 15:49:47,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:47,042 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:47,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:47,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:47,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:47,043 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 248 [2022-04-18 15:49:47,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 248 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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) [2022-04-18 15:49:47,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:47,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 248 [2022-04-18 15:49:47,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:52,771 INFO L129 PetriNetUnfolder]: 13730/53632 cut-off events. [2022-04-18 15:49:52,773 INFO L130 PetriNetUnfolder]: For 4013/6642 co-relation queries the response was YES. [2022-04-18 15:49:52,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74700 conditions, 53632 events. 13730/53632 cut-off events. For 4013/6642 co-relation queries the response was YES. Maximal size of possible extension queue 1249. Compared 716261 event pairs, 5685 based on Foata normal form. 18595/64676 useless extension candidates. Maximal degree in co-relation 40209. Up to 15011 conditions per place. [2022-04-18 15:49:53,236 INFO L132 encePairwiseOnDemand]: 209/248 looper letters, 39 selfloop transitions, 12 changer transitions 0/242 dead transitions. [2022-04-18 15:49:53,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 242 transitions, 663 flow [2022-04-18 15:49:53,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2022-04-18 15:49:53,240 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9032258064516129 [2022-04-18 15:49:53,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2022-04-18 15:49:53,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2022-04-18 15:49:53,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:53,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2022-04-18 15:49:53,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 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) [2022-04-18 15:49:53,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:53,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:53,244 INFO L186 Difference]: Start difference. First operand has 230 places, 248 transitions, 540 flow. Second operand 3 states and 672 transitions. [2022-04-18 15:49:53,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 242 transitions, 663 flow [2022-04-18 15:49:53,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 242 transitions, 663 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:53,253 INFO L242 Difference]: Finished difference. Result has 228 places, 231 transitions, 582 flow [2022-04-18 15:49:53,253 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=582, PETRI_PLACES=228, PETRI_TRANSITIONS=231} [2022-04-18 15:49:53,254 INFO L335 CegarLoopForPetriNet]: 230 programPoint places, -2 predicate places. [2022-04-18 15:49:53,255 INFO L478 AbstractCegarLoop]: Abstraction has has 228 places, 231 transitions, 582 flow [2022-04-18 15:49:53,257 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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) [2022-04-18 15:49:53,257 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:53,257 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:53,257 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 15:49:53,257 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-04-18 15:49:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:53,258 INFO L85 PathProgramCache]: Analyzing trace with hash -983828655, now seen corresponding path program 1 times [2022-04-18 15:49:53,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:53,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947562048] [2022-04-18 15:49:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:53,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:53,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:53,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947562048] [2022-04-18 15:49:53,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947562048] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:53,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:53,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:53,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523224409] [2022-04-18 15:49:53,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:53,289 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:53,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:53,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:53,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:53,290 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 248 [2022-04-18 15:49:53,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 231 transitions, 582 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 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) [2022-04-18 15:49:53,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:53,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 248 [2022-04-18 15:49:53,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:56,720 INFO L129 PetriNetUnfolder]: 4977/32438 cut-off events. [2022-04-18 15:49:56,720 INFO L130 PetriNetUnfolder]: For 4697/5726 co-relation queries the response was YES. [2022-04-18 15:49:56,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43147 conditions, 32438 events. 4977/32438 cut-off events. For 4697/5726 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 448498 event pairs, 2075 based on Foata normal form. 0/29019 useless extension candidates. Maximal degree in co-relation 31186. Up to 5255 conditions per place. [2022-04-18 15:49:57,133 INFO L132 encePairwiseOnDemand]: 245/248 looper letters, 17 selfloop transitions, 2 changer transitions 0/235 dead transitions. [2022-04-18 15:49:57,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 235 transitions, 628 flow [2022-04-18 15:49:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:57,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:57,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2022-04-18 15:49:57,137 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8655913978494624 [2022-04-18 15:49:57,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2022-04-18 15:49:57,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2022-04-18 15:49:57,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:57,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2022-04-18 15:49:57,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 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) [2022-04-18 15:49:57,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:57,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:57,142 INFO L186 Difference]: Start difference. First operand has 228 places, 231 transitions, 582 flow. Second operand 3 states and 644 transitions. [2022-04-18 15:49:57,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 235 transitions, 628 flow [2022-04-18 15:49:57,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 235 transitions, 604 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:49:57,157 INFO L242 Difference]: Finished difference. Result has 229 places, 232 transitions, 570 flow [2022-04-18 15:49:57,157 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=570, PETRI_PLACES=229, PETRI_TRANSITIONS=232} [2022-04-18 15:49:57,159 INFO L335 CegarLoopForPetriNet]: 230 programPoint places, -1 predicate places. [2022-04-18 15:49:57,159 INFO L478 AbstractCegarLoop]: Abstraction has has 229 places, 232 transitions, 570 flow [2022-04-18 15:49:57,159 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 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) [2022-04-18 15:49:57,159 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:57,160 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:57,160 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 15:49:57,160 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-04-18 15:49:57,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:57,160 INFO L85 PathProgramCache]: Analyzing trace with hash 425567116, now seen corresponding path program 1 times [2022-04-18 15:49:57,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:57,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205887924] [2022-04-18 15:49:57,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:57,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:57,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:57,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205887924] [2022-04-18 15:49:57,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205887924] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:49:57,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356978088] [2022-04-18 15:49:57,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:57,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:49:57,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:49:57,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:49:57,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-18 15:49:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:57,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-18 15:49:57,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:49:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:49:57,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:49:57,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356978088] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:57,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:49:57,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-04-18 15:49:57,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034433719] [2022-04-18 15:49:57,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:57,380 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:57,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:57,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:57,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:49:57,383 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 248 [2022-04-18 15:49:57,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 232 transitions, 570 flow. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 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) [2022-04-18 15:49:57,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:57,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 248 [2022-04-18 15:49:57,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:02,644 INFO L129 PetriNetUnfolder]: 8486/46959 cut-off events. [2022-04-18 15:50:02,644 INFO L130 PetriNetUnfolder]: For 2562/3432 co-relation queries the response was YES. [2022-04-18 15:50:02,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60864 conditions, 46959 events. 8486/46959 cut-off events. For 2562/3432 co-relation queries the response was YES. Maximal size of possible extension queue 1243. Compared 684629 event pairs, 3938 based on Foata normal form. 51/41275 useless extension candidates. Maximal degree in co-relation 60804. Up to 9338 conditions per place. [2022-04-18 15:50:03,070 INFO L132 encePairwiseOnDemand]: 245/248 looper letters, 15 selfloop transitions, 2 changer transitions 0/235 dead transitions. [2022-04-18 15:50:03,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 235 transitions, 610 flow [2022-04-18 15:50:03,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2022-04-18 15:50:03,072 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8669354838709677 [2022-04-18 15:50:03,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 645 transitions. [2022-04-18 15:50:03,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 645 transitions. [2022-04-18 15:50:03,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:03,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 645 transitions. [2022-04-18 15:50:03,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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) [2022-04-18 15:50:03,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:03,076 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:03,076 INFO L186 Difference]: Start difference. First operand has 229 places, 232 transitions, 570 flow. Second operand 3 states and 645 transitions. [2022-04-18 15:50:03,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 235 transitions, 610 flow [2022-04-18 15:50:03,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 235 transitions, 608 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:03,087 INFO L242 Difference]: Finished difference. Result has 231 places, 233 transitions, 580 flow [2022-04-18 15:50:03,088 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=231, PETRI_TRANSITIONS=233} [2022-04-18 15:50:03,088 INFO L335 CegarLoopForPetriNet]: 230 programPoint places, 1 predicate places. [2022-04-18 15:50:03,089 INFO L478 AbstractCegarLoop]: Abstraction has has 231 places, 233 transitions, 580 flow [2022-04-18 15:50:03,089 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 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) [2022-04-18 15:50:03,089 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:03,089 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:03,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-18 15:50:03,303 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:03,304 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-04-18 15:50:03,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:03,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1832371027, now seen corresponding path program 1 times [2022-04-18 15:50:03,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:03,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856315828] [2022-04-18 15:50:03,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:03,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:50:03,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:03,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856315828] [2022-04-18 15:50:03,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856315828] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:03,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361484244] [2022-04-18 15:50:03,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:03,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:03,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:03,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:50:03,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-18 15:50:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:03,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:50:03,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:50:03,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:50:03,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361484244] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:03,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:03,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 15:50:03,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319069394] [2022-04-18 15:50:03,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:03,684 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 15:50:03,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:03,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 15:50:03,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:50:03,688 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 248 [2022-04-18 15:50:03,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 233 transitions, 580 flow. Second operand has 10 states, 10 states have (on average 209.3) internal successors, (2093), 10 states have internal predecessors, (2093), 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) [2022-04-18 15:50:03,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:03,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 248 [2022-04-18 15:50:03,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:09,075 INFO L129 PetriNetUnfolder]: 8244/46091 cut-off events. [2022-04-18 15:50:09,075 INFO L130 PetriNetUnfolder]: For 2479/3115 co-relation queries the response was YES. [2022-04-18 15:50:09,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59346 conditions, 46091 events. 8244/46091 cut-off events. For 2479/3115 co-relation queries the response was YES. Maximal size of possible extension queue 1242. Compared 675232 event pairs, 3816 based on Foata normal form. 38/40544 useless extension candidates. Maximal degree in co-relation 48109. Up to 9028 conditions per place. [2022-04-18 15:50:09,508 INFO L132 encePairwiseOnDemand]: 242/248 looper letters, 18 selfloop transitions, 9 changer transitions 0/243 dead transitions. [2022-04-18 15:50:09,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 243 transitions, 656 flow [2022-04-18 15:50:09,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:50:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:50:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1892 transitions. [2022-04-18 15:50:09,523 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8476702508960573 [2022-04-18 15:50:09,523 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1892 transitions. [2022-04-18 15:50:09,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1892 transitions. [2022-04-18 15:50:09,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:09,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1892 transitions. [2022-04-18 15:50:09,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 210.22222222222223) internal successors, (1892), 9 states have internal predecessors, (1892), 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) [2022-04-18 15:50:09,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 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) [2022-04-18 15:50:09,534 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 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) [2022-04-18 15:50:09,534 INFO L186 Difference]: Start difference. First operand has 231 places, 233 transitions, 580 flow. Second operand 9 states and 1892 transitions. [2022-04-18 15:50:09,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 243 transitions, 656 flow [2022-04-18 15:50:09,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 243 transitions, 654 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:09,551 INFO L242 Difference]: Finished difference. Result has 241 places, 239 transitions, 628 flow [2022-04-18 15:50:09,552 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=628, PETRI_PLACES=241, PETRI_TRANSITIONS=239} [2022-04-18 15:50:09,553 INFO L335 CegarLoopForPetriNet]: 230 programPoint places, 11 predicate places. [2022-04-18 15:50:09,553 INFO L478 AbstractCegarLoop]: Abstraction has has 241 places, 239 transitions, 628 flow [2022-04-18 15:50:09,554 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 209.3) internal successors, (2093), 10 states have internal predecessors, (2093), 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) [2022-04-18 15:50:09,554 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:09,554 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:09,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-18 15:50:09,763 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:09,763 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-04-18 15:50:09,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:09,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1976692927, now seen corresponding path program 1 times [2022-04-18 15:50:09,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:09,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391389300] [2022-04-18 15:50:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:09,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:09,790 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:50:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:09,818 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:50:09,818 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:50:09,819 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-04-18 15:50:09,819 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-04-18 15:50:09,819 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-04-18 15:50:09,819 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-04-18 15:50:09,819 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-04-18 15:50:09,819 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-04-18 15:50:09,820 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-04-18 15:50:09,820 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-04-18 15:50:09,820 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-04-18 15:50:09,820 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-04-18 15:50:09,820 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-04-18 15:50:09,820 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-18 15:50:09,821 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-18 15:50:09,821 WARN L232 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:50:09,821 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-04-18 15:50:09,847 INFO L135 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-04-18 15:50:09,848 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:09,849 INFO L340 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 [2022-04-18 15:50:09,849 INFO L341 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-04-18 15:50:09,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 254 places, 274 transitions, 608 flow [2022-04-18 15:50:09,978 INFO L129 PetriNetUnfolder]: 161/1395 cut-off events. [2022-04-18 15:50:09,979 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-04-18 15:50:09,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 1395 events. 161/1395 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 7580 event pairs, 23 based on Foata normal form. 0/1189 useless extension candidates. Maximal degree in co-relation 960. Up to 80 conditions per place. [2022-04-18 15:50:09,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 274 transitions, 608 flow [2022-04-18 15:50:10,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 274 transitions, 608 flow [2022-04-18 15:50:10,004 INFO L129 PetriNetUnfolder]: 5/88 cut-off events. [2022-04-18 15:50:10,004 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:50:10,004 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:10,005 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:10,005 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-04-18 15:50:10,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:10,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1777590267, now seen corresponding path program 1 times [2022-04-18 15:50:10,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:10,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501807543] [2022-04-18 15:50:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:10,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:10,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:10,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501807543] [2022-04-18 15:50:10,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501807543] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:10,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:10,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:10,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139798119] [2022-04-18 15:50:10,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:10,038 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:10,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:10,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:10,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:10,040 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 274 [2022-04-18 15:50:10,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 274 transitions, 608 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 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) [2022-04-18 15:50:10,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:10,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 274 [2022-04-18 15:50:10,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand