./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_18-nested_rc.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_18-nested_rc.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 bf117fc0bf8ae8b9ef4bb89156c7168763fcd2ba3d8567cd686924f85ad04dca --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 17:52:53,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 17:52:53,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 17:52:53,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 17:52:53,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 17:52:53,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 17:52:53,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 17:52:53,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 17:52:53,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 17:52:53,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 17:52:53,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 17:52:53,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 17:52:53,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 17:52:53,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 17:52:53,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 17:52:53,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 17:52:53,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 17:52:53,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 17:52:53,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 17:52:54,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 17:52:54,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 17:52:54,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 17:52:54,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 17:52:54,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 17:52:54,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 17:52:54,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 17:52:54,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 17:52:54,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 17:52:54,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 17:52:54,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 17:52:54,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 17:52:54,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 17:52:54,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 17:52:54,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 17:52:54,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 17:52:54,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 17:52:54,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 17:52:54,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 17:52:54,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 17:52:54,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 17:52:54,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 17:52:54,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 17:52:54,063 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 17:52:54,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 17:52:54,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 17:52:54,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 17:52:54,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 17:52:54,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 17:52:54,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 17:52:54,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 17:52:54,067 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 17:52:54,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 17:52:54,068 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 17:52:54,068 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 17:52:54,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 17:52:54,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 17:52:54,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 17:52:54,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 17:52:54,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 17:52:54,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 17:52:54,069 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 17:52:54,069 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 17:52:54,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 17:52:54,070 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 17:52:54,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 17:52:54,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 17:52:54,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 17:52:54,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 17:52:54,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 17:52:54,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 17:52:54,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 17:52:54,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 17:52:54,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 17:52:54,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 17:52:54,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 17:52:54,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 17:52:54,073 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 17:52:54,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 17:52:54,073 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 17:52:54,073 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf117fc0bf8ae8b9ef4bb89156c7168763fcd2ba3d8567cd686924f85ad04dca Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 17:52:54,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 17:52:54,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 17:52:54,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 17:52:54,388 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 17:52:54,389 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 17:52:54,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_18-nested_rc.i [2023-08-29 17:52:55,629 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 17:52:55,889 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 17:52:55,889 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_18-nested_rc.i [2023-08-29 17:52:55,905 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ed72bf1/a75ba913fe5742e698a99d3bb448bf02/FLAGd175c8015 [2023-08-29 17:52:55,917 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ed72bf1/a75ba913fe5742e698a99d3bb448bf02 [2023-08-29 17:52:55,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 17:52:55,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 17:52:55,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 17:52:55,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 17:52:55,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 17:52:55,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:52:55" (1/1) ... [2023-08-29 17:52:55,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f16b219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:55, skipping insertion in model container [2023-08-29 17:52:55,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:52:55" (1/1) ... [2023-08-29 17:52:55,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 17:52:55,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 17:52:56,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 17:52:56,439 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 17:52:56,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 17:52:56,606 INFO L208 MainTranslator]: Completed translation [2023-08-29 17:52:56,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:56 WrapperNode [2023-08-29 17:52:56,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 17:52:56,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 17:52:56,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 17:52:56,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 17:52:56,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:56" (1/1) ... [2023-08-29 17:52:56,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:56" (1/1) ... [2023-08-29 17:52:56,680 INFO L138 Inliner]: procedures = 370, calls = 29, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 228 [2023-08-29 17:52:56,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 17:52:56,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 17:52:56,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 17:52:56,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 17:52:56,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:56" (1/1) ... [2023-08-29 17:52:56,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:56" (1/1) ... [2023-08-29 17:52:56,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:56" (1/1) ... [2023-08-29 17:52:56,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:56" (1/1) ... [2023-08-29 17:52:56,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:56" (1/1) ... [2023-08-29 17:52:56,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:56" (1/1) ... [2023-08-29 17:52:56,739 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:56" (1/1) ... [2023-08-29 17:52:56,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:56" (1/1) ... [2023-08-29 17:52:56,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 17:52:56,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 17:52:56,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 17:52:56,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 17:52:56,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:56" (1/1) ... [2023-08-29 17:52:56,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 17:52:56,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:52:56,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 17:52:56,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 17:52:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 17:52:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 17:52:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 17:52:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 17:52:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 17:52:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 17:52:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 17:52:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 17:52:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 17:52:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 17:52:56,843 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 17:52:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 17:52:56,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 17:52:56,845 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 17:52:57,015 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 17:52:57,017 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 17:52:57,425 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 17:52:57,433 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 17:52:57,439 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-29 17:52:57,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:52:57 BoogieIcfgContainer [2023-08-29 17:52:57,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 17:52:57,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 17:52:57,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 17:52:57,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 17:52:57,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 05:52:55" (1/3) ... [2023-08-29 17:52:57,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f93dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:52:57, skipping insertion in model container [2023-08-29 17:52:57,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:52:56" (2/3) ... [2023-08-29 17:52:57,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f93dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:52:57, skipping insertion in model container [2023-08-29 17:52:57,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:52:57" (3/3) ... [2023-08-29 17:52:57,452 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_18-nested_rc.i [2023-08-29 17:52:57,460 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 17:52:57,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 17:52:57,468 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-29 17:52:57,469 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 17:52:57,616 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 17:52:57,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 258 transitions, 521 flow [2023-08-29 17:52:57,792 INFO L130 PetriNetUnfolder]: 4/257 cut-off events. [2023-08-29 17:52:57,793 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:52:57,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 257 events. 4/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 111 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2023-08-29 17:52:57,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 258 transitions, 521 flow [2023-08-29 17:52:57,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 257 transitions, 517 flow [2023-08-29 17:52:57,811 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 17:52:57,833 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 257 transitions, 517 flow [2023-08-29 17:52:57,837 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 257 transitions, 517 flow [2023-08-29 17:52:57,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 257 transitions, 517 flow [2023-08-29 17:52:57,891 INFO L130 PetriNetUnfolder]: 4/257 cut-off events. [2023-08-29 17:52:57,891 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:52:57,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 257 events. 4/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 111 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2023-08-29 17:52:57,896 INFO L119 LiptonReduction]: Number of co-enabled transitions 6048 [2023-08-29 17:54:05,398 WARN L222 SmtUtils]: Spent 15.57s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 17:54:16,086 WARN L222 SmtUtils]: Spent 10.68s on a formula simplification that was a NOOP. DAG size: 164 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 17:54:30,055 WARN L222 SmtUtils]: Spent 13.97s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 17:54:40,020 WARN L222 SmtUtils]: Spent 9.96s on a formula simplification that was a NOOP. DAG size: 164 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 17:55:09,370 WARN L222 SmtUtils]: Spent 29.34s on a formula simplification that was a NOOP. DAG size: 223 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 17:55:26,507 WARN L222 SmtUtils]: Spent 17.13s on a formula simplification that was a NOOP. DAG size: 215 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 17:56:03,445 WARN L222 SmtUtils]: Spent 36.94s on a formula simplification that was a NOOP. DAG size: 223 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 17:56:40,518 WARN L222 SmtUtils]: Spent 37.07s on a formula simplification that was a NOOP. DAG size: 215 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:00:11,260 WARN L222 SmtUtils]: Spent 3.51m on a formula simplification. DAG size of input: 332 DAG size of output: 323 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:01:07,039 WARN L222 SmtUtils]: Spent 55.77s on a formula simplification that was a NOOP. DAG size: 292 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:06:00,319 WARN L222 SmtUtils]: Spent 4.89m on a formula simplification. DAG size of input: 338 DAG size of output: 329 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:07:19,597 WARN L222 SmtUtils]: Spent 1.32m on a formula simplification that was a NOOP. DAG size: 298 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:07:19,601 INFO L134 LiptonReduction]: Checked pairs total: 44730 [2023-08-29 18:07:19,602 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-08-29 18:07:19,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:07:19,618 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56bb2b6b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:07:19,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-29 18:07:19,620 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-29 18:07:19,620 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:07:19,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:07:19,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 18:07:19,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-29 18:07:19,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:07:19,626 INFO L85 PathProgramCache]: Analyzing trace with hash 26932, now seen corresponding path program 1 times [2023-08-29 18:07:19,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:07:19,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501427115] [2023-08-29 18:07:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:07:19,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:07:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:07:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:07:19,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:07:19,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501427115] [2023-08-29 18:07:19,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501427115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:07:19,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:07:19,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 18:07:19,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668191509] [2023-08-29 18:07:19,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:07:19,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:07:19,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:07:19,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:07:19,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:07:19,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 486 [2023-08-29 18:07:19,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 163 flow. Second operand has 2 states, 2 states have (on average 255.0) internal successors, (510), 2 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:19,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:07:19,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 486 [2023-08-29 18:07:19,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:07:20,528 INFO L130 PetriNetUnfolder]: 65/309 cut-off events. [2023-08-29 18:07:20,529 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:07:20,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 309 events. 65/309 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1410 event pairs, 64 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 453. Up to 153 conditions per place. [2023-08-29 18:07:20,534 INFO L137 encePairwiseOnDemand]: 477/486 looper letters, 24 selfloop transitions, 0 changer transitions 0/71 dead transitions. [2023-08-29 18:07:20,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 193 flow [2023-08-29 18:07:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:07:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:07:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 541 transitions. [2023-08-29 18:07:20,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565843621399177 [2023-08-29 18:07:20,556 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 541 transitions. [2023-08-29 18:07:20,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 541 transitions. [2023-08-29 18:07:20,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:07:20,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 541 transitions. [2023-08-29 18:07:20,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 270.5) internal successors, (541), 2 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:20,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 486.0) internal successors, (1458), 3 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:20,574 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 486.0) internal successors, (1458), 3 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:20,576 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 163 flow. Second operand 2 states and 541 transitions. [2023-08-29 18:07:20,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 193 flow [2023-08-29 18:07:20,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:07:20,584 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 144 flow [2023-08-29 18:07:20,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=144, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2023-08-29 18:07:20,589 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -9 predicate places. [2023-08-29 18:07:20,589 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 144 flow [2023-08-29 18:07:20,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 255.0) internal successors, (510), 2 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:20,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:07:20,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:07:20,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:07:20,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-29 18:07:20,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:07:20,604 INFO L85 PathProgramCache]: Analyzing trace with hash -782854688, now seen corresponding path program 1 times [2023-08-29 18:07:20,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:07:20,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51274580] [2023-08-29 18:07:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:07:20,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:07:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:07:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:07:21,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:07:21,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51274580] [2023-08-29 18:07:21,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51274580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:07:21,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:07:21,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:07:21,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836056213] [2023-08-29 18:07:21,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:07:21,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:07:21,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:07:21,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:07:21,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:07:21,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 486 [2023-08-29 18:07:21,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:21,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:07:21,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 486 [2023-08-29 18:07:21,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:07:22,115 INFO L130 PetriNetUnfolder]: 65/310 cut-off events. [2023-08-29 18:07:22,115 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:07:22,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 310 events. 65/310 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1406 event pairs, 64 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 465. Up to 153 conditions per place. [2023-08-29 18:07:22,118 INFO L137 encePairwiseOnDemand]: 483/486 looper letters, 23 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-29 18:07:22,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 196 flow [2023-08-29 18:07:22,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:07:22,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:07:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2023-08-29 18:07:22,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532235939643347 [2023-08-29 18:07:22,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2023-08-29 18:07:22,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2023-08-29 18:07:22,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:07:22,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2023-08-29 18:07:22,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:22,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:22,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:22,129 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 144 flow. Second operand 3 states and 776 transitions. [2023-08-29 18:07:22,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 196 flow [2023-08-29 18:07:22,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:07:22,131 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 156 flow [2023-08-29 18:07:22,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-08-29 18:07:22,132 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -6 predicate places. [2023-08-29 18:07:22,133 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 156 flow [2023-08-29 18:07:22,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:22,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:07:22,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:07:22,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:07:22,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-29 18:07:22,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:07:22,135 INFO L85 PathProgramCache]: Analyzing trace with hash -948183621, now seen corresponding path program 1 times [2023-08-29 18:07:22,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:07:22,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980009841] [2023-08-29 18:07:22,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:07:22,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:07:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:07:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:07:22,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:07:22,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980009841] [2023-08-29 18:07:22,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980009841] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:07:22,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63974405] [2023-08-29 18:07:22,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:07:22,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:07:22,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:07:22,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:07:22,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 18:07:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:07:22,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:07:22,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:07:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:07:22,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:07:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:07:22,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63974405] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:07:22,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:07:22,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:07:22,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915379741] [2023-08-29 18:07:22,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:07:22,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:07:22,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:07:22,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:07:22,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:07:22,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 486 [2023-08-29 18:07:22,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 250.42857142857142) internal successors, (1753), 7 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:22,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:07:22,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 486 [2023-08-29 18:07:22,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:07:25,921 INFO L130 PetriNetUnfolder]: 65/313 cut-off events. [2023-08-29 18:07:25,921 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:07:25,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 313 events. 65/313 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1410 event pairs, 64 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 479. Up to 153 conditions per place. [2023-08-29 18:07:25,923 INFO L137 encePairwiseOnDemand]: 483/486 looper letters, 23 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2023-08-29 18:07:25,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 75 transitions, 224 flow [2023-08-29 18:07:25,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:07:25,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:07:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1525 transitions. [2023-08-29 18:07:25,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229766803840878 [2023-08-29 18:07:25,927 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1525 transitions. [2023-08-29 18:07:25,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1525 transitions. [2023-08-29 18:07:25,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:07:25,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1525 transitions. [2023-08-29 18:07:25,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.16666666666666) internal successors, (1525), 6 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:25,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:25,939 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:25,940 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 156 flow. Second operand 6 states and 1525 transitions. [2023-08-29 18:07:25,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 75 transitions, 224 flow [2023-08-29 18:07:25,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 220 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:07:25,942 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 188 flow [2023-08-29 18:07:25,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2023-08-29 18:07:25,943 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2023-08-29 18:07:25,943 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 188 flow [2023-08-29 18:07:25,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 250.42857142857142) internal successors, (1753), 7 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:25,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:07:25,945 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:07:25,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 18:07:26,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:07:26,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-29 18:07:26,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:07:26,153 INFO L85 PathProgramCache]: Analyzing trace with hash -732482400, now seen corresponding path program 2 times [2023-08-29 18:07:26,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:07:26,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474062457] [2023-08-29 18:07:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:07:26,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:07:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:07:27,426 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 18:07:27,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:07:27,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474062457] [2023-08-29 18:07:27,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474062457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:07:27,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:07:27,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 18:07:27,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307419328] [2023-08-29 18:07:27,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:07:27,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:07:27,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:07:27,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:07:27,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:07:28,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 486 [2023-08-29 18:07:28,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:28,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:07:28,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 486 [2023-08-29 18:07:28,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:07:30,314 INFO L130 PetriNetUnfolder]: 444/1503 cut-off events. [2023-08-29 18:07:30,314 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 18:07:30,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 1503 events. 444/1503 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9475 event pairs, 37 based on Foata normal form. 0/1417 useless extension candidates. Maximal degree in co-relation 2488. Up to 613 conditions per place. [2023-08-29 18:07:30,322 INFO L137 encePairwiseOnDemand]: 464/486 looper letters, 96 selfloop transitions, 69 changer transitions 0/194 dead transitions. [2023-08-29 18:07:30,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 194 transitions, 756 flow [2023-08-29 18:07:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:07:30,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:07:30,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1326 transitions. [2023-08-29 18:07:30,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547325102880658 [2023-08-29 18:07:30,327 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1326 transitions. [2023-08-29 18:07:30,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1326 transitions. [2023-08-29 18:07:30,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:07:30,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1326 transitions. [2023-08-29 18:07:30,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:30,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:30,338 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:30,338 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 188 flow. Second operand 6 states and 1326 transitions. [2023-08-29 18:07:30,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 194 transitions, 756 flow [2023-08-29 18:07:30,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 194 transitions, 742 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:07:30,345 INFO L231 Difference]: Finished difference. Result has 93 places, 143 transitions, 628 flow [2023-08-29 18:07:30,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=628, PETRI_PLACES=93, PETRI_TRANSITIONS=143} [2023-08-29 18:07:30,347 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 10 predicate places. [2023-08-29 18:07:30,347 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 143 transitions, 628 flow [2023-08-29 18:07:30,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:30,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:07:30,349 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:07:30,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:07:30,349 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-29 18:07:30,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:07:30,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1402759309, now seen corresponding path program 1 times [2023-08-29 18:07:30,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:07:30,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291957468] [2023-08-29 18:07:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:07:30,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:07:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:07:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:07:30,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:07:30,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291957468] [2023-08-29 18:07:30,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291957468] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:07:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639259938] [2023-08-29 18:07:30,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:07:30,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:07:30,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:07:30,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:07:30,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 18:07:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:07:31,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:07:31,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:07:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:07:31,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:07:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:07:31,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639259938] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:07:31,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:07:31,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:07:31,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484837464] [2023-08-29 18:07:31,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:07:31,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:07:31,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:07:31,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:07:31,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:07:31,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 486 [2023-08-29 18:07:31,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 143 transitions, 628 flow. Second operand has 13 states, 13 states have (on average 250.46153846153845) internal successors, (3256), 13 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:31,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:07:31,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 486 [2023-08-29 18:07:31,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:07:33,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 18:07:34,622 INFO L130 PetriNetUnfolder]: 252/1101 cut-off events. [2023-08-29 18:07:34,623 INFO L131 PetriNetUnfolder]: For 168/189 co-relation queries the response was YES. [2023-08-29 18:07:34,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2092 conditions, 1101 events. 252/1101 cut-off events. For 168/189 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6964 event pairs, 91 based on Foata normal form. 6/1030 useless extension candidates. Maximal degree in co-relation 2079. Up to 356 conditions per place. [2023-08-29 18:07:34,630 INFO L137 encePairwiseOnDemand]: 483/486 looper letters, 39 selfloop transitions, 11 changer transitions 0/149 dead transitions. [2023-08-29 18:07:34,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 149 transitions, 764 flow [2023-08-29 18:07:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:07:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:07:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3028 transitions. [2023-08-29 18:07:34,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192043895747599 [2023-08-29 18:07:34,638 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3028 transitions. [2023-08-29 18:07:34,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3028 transitions. [2023-08-29 18:07:34,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:07:34,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3028 transitions. [2023-08-29 18:07:34,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 252.33333333333334) internal successors, (3028), 12 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:34,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 486.0) internal successors, (6318), 13 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:34,658 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 486.0) internal successors, (6318), 13 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:34,659 INFO L175 Difference]: Start difference. First operand has 93 places, 143 transitions, 628 flow. Second operand 12 states and 3028 transitions. [2023-08-29 18:07:34,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 149 transitions, 764 flow [2023-08-29 18:07:34,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 149 transitions, 764 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:07:34,673 INFO L231 Difference]: Finished difference. Result has 110 places, 149 transitions, 712 flow [2023-08-29 18:07:34,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=712, PETRI_PLACES=110, PETRI_TRANSITIONS=149} [2023-08-29 18:07:34,675 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 27 predicate places. [2023-08-29 18:07:34,676 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 149 transitions, 712 flow [2023-08-29 18:07:34,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 250.46153846153845) internal successors, (3256), 13 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:07:34,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:07:34,677 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:07:34,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 Killed by 15