./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread/queue_longer.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/queue_longer.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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 11:16:22,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 11:16:22,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 11:16:22,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 11:16:22,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 11:16:22,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 11:16:22,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 11:16:22,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 11:16:22,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 11:16:22,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 11:16:22,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 11:16:22,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 11:16:22,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 11:16:22,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 11:16:22,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 11:16:22,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 11:16:22,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 11:16:22,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 11:16:22,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 11:16:22,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 11:16:22,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 11:16:22,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 11:16:22,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 11:16:22,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 11:16:22,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 11:16:22,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 11:16:22,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 11:16:22,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 11:16:22,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 11:16:22,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 11:16:22,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 11:16:22,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 11:16:22,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 11:16:22,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 11:16:22,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 11:16:22,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 11:16:22,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 11:16:22,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 11:16:22,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 11:16:22,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 11:16:22,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 11:16:22,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 11:16:22,187 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 11:16:22,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 11:16:22,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 11:16:22,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 11:16:22,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 11:16:22,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 11:16:22,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 11:16:22,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 11:16:22,190 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 11:16:22,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 11:16:22,191 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 11:16:22,192 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 11:16:22,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 11:16:22,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 11:16:22,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 11:16:22,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 11:16:22,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 11:16:22,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 11:16:22,193 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 11:16:22,193 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 11:16:22,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 11:16:22,193 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 11:16:22,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 11:16:22,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 11:16:22,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 11:16:22,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 11:16:22,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 11:16:22,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 11:16:22,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 11:16:22,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 11:16:22,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 11:16:22,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 11:16:22,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 11:16:22,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 11:16:22,196 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 11:16:22,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 11:16:22,197 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 11:16:22,197 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 11:16:22,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 11:16:22,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 11:16:22,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 11:16:22,534 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 11:16:22,534 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 11:16:22,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longer.i [2023-08-31 11:16:23,644 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 11:16:23,951 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 11:16:23,952 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i [2023-08-31 11:16:23,971 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14a4e51c4/80ee8f4c1f8e4b7b9c357f0bf4a450a5/FLAGef51223d1 [2023-08-31 11:16:23,991 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14a4e51c4/80ee8f4c1f8e4b7b9c357f0bf4a450a5 [2023-08-31 11:16:23,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 11:16:23,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 11:16:23,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 11:16:23,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 11:16:23,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 11:16:24,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:16:23" (1/1) ... [2023-08-31 11:16:24,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a13494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24, skipping insertion in model container [2023-08-31 11:16:24,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:16:23" (1/1) ... [2023-08-31 11:16:24,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 11:16:24,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 11:16:24,531 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43296,43309] [2023-08-31 11:16:24,536 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43503,43516] [2023-08-31 11:16:24,541 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43783,43796] [2023-08-31 11:16:24,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 11:16:24,563 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 11:16:24,640 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43296,43309] [2023-08-31 11:16:24,644 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43503,43516] [2023-08-31 11:16:24,647 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43783,43796] [2023-08-31 11:16:24,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 11:16:24,707 INFO L208 MainTranslator]: Completed translation [2023-08-31 11:16:24,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24 WrapperNode [2023-08-31 11:16:24,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 11:16:24,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 11:16:24,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 11:16:24,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 11:16:24,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24" (1/1) ... [2023-08-31 11:16:24,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24" (1/1) ... [2023-08-31 11:16:24,801 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 483 [2023-08-31 11:16:24,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 11:16:24,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 11:16:24,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 11:16:24,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 11:16:24,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24" (1/1) ... [2023-08-31 11:16:24,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24" (1/1) ... [2023-08-31 11:16:24,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24" (1/1) ... [2023-08-31 11:16:24,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24" (1/1) ... [2023-08-31 11:16:24,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24" (1/1) ... [2023-08-31 11:16:24,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24" (1/1) ... [2023-08-31 11:16:24,881 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24" (1/1) ... [2023-08-31 11:16:24,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24" (1/1) ... [2023-08-31 11:16:24,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 11:16:24,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 11:16:24,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 11:16:24,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 11:16:24,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24" (1/1) ... [2023-08-31 11:16:24,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 11:16:24,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 11:16:24,938 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) [2023-08-31 11:16:24,964 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 [2023-08-31 11:16:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-31 11:16:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-31 11:16:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-31 11:16:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-31 11:16:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 11:16:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 11:16:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 11:16:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 11:16:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 11:16:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 11:16:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 11:16:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 11:16:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 11:16:24,980 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 11:16:25,200 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 11:16:25,202 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 11:16:25,919 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 11:16:25,928 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 11:16:25,928 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-31 11:16:25,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:16:25 BoogieIcfgContainer [2023-08-31 11:16:25,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 11:16:25,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 11:16:25,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 11:16:25,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 11:16:25,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:16:23" (1/3) ... [2023-08-31 11:16:25,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246b2b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:16:25, skipping insertion in model container [2023-08-31 11:16:25,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:16:24" (2/3) ... [2023-08-31 11:16:25,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246b2b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:16:25, skipping insertion in model container [2023-08-31 11:16:25,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:16:25" (3/3) ... [2023-08-31 11:16:25,937 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-08-31 11:16:25,943 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 11:16:25,963 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 11:16:25,963 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-08-31 11:16:25,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 11:16:26,162 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 11:16:26,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 531 places, 539 transitions, 1094 flow [2023-08-31 11:16:26,433 INFO L130 PetriNetUnfolder]: 15/537 cut-off events. [2023-08-31 11:16:26,433 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 11:16:26,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 537 events. 15/537 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 780 event pairs, 0 based on Foata normal form. 0/478 useless extension candidates. Maximal degree in co-relation 415. Up to 2 conditions per place. [2023-08-31 11:16:26,447 INFO L82 GeneralOperation]: Start removeDead. Operand has 531 places, 539 transitions, 1094 flow [2023-08-31 11:16:26,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 520 places, 528 transitions, 1065 flow [2023-08-31 11:16:26,462 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:16:26,474 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 520 places, 528 transitions, 1065 flow [2023-08-31 11:16:26,477 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 520 places, 528 transitions, 1065 flow [2023-08-31 11:16:26,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 520 places, 528 transitions, 1065 flow [2023-08-31 11:16:26,591 INFO L130 PetriNetUnfolder]: 15/528 cut-off events. [2023-08-31 11:16:26,592 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 11:16:26,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 528 events. 15/528 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 745 event pairs, 0 based on Foata normal form. 0/469 useless extension candidates. Maximal degree in co-relation 415. Up to 2 conditions per place. [2023-08-31 11:16:26,642 INFO L119 LiptonReduction]: Number of co-enabled transitions 81540 [2023-08-31 11:16:52,130 WARN L222 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 120 DAG size of output: 115 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 11:17:02,726 WARN L222 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 130 DAG size of output: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 11:17:19,978 WARN L222 SmtUtils]: Spent 9.56s on a formula simplification. DAG size of input: 235 DAG size of output: 218 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 11:17:28,722 WARN L222 SmtUtils]: Spent 8.74s on a formula simplification that was a NOOP. DAG size: 207 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 11:18:03,464 WARN L222 SmtUtils]: Spent 34.74s on a formula simplification. DAG size of input: 242 DAG size of output: 225 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 11:18:15,786 WARN L222 SmtUtils]: Spent 12.32s on a formula simplification that was a NOOP. DAG size: 213 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 11:18:15,841 INFO L134 LiptonReduction]: Checked pairs total: 682961 [2023-08-31 11:18:15,841 INFO L136 LiptonReduction]: Total number of compositions: 319 [2023-08-31 11:18:15,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 11:18:15,855 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;@283e2afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:18:15,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2023-08-31 11:18:15,857 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 11:18:15,857 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 11:18:15,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:18:15,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 11:18:15,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-31 11:18:15,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:18:15,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1884, now seen corresponding path program 1 times [2023-08-31 11:18:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:18:15,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189394490] [2023-08-31 11:18:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:18:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:18:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 11:18:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 11:18:15,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 11:18:15,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189394490] [2023-08-31 11:18:15,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189394490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 11:18:15,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 11:18:15,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 11:18:15,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406901262] [2023-08-31 11:18:15,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 11:18:15,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 11:18:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 11:18:15,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 11:18:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 11:18:15,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 526 out of 858 [2023-08-31 11:18:16,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 275 transitions, 559 flow. Second operand has 2 states, 2 states have (on average 526.5) internal successors, (1053), 2 states have internal predecessors, (1053), 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) [2023-08-31 11:18:16,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 11:18:16,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 526 of 858 [2023-08-31 11:18:16,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 11:18:17,905 INFO L130 PetriNetUnfolder]: 4142/12585 cut-off events. [2023-08-31 11:18:17,906 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-08-31 11:18:17,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19425 conditions, 12585 events. 4142/12585 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 109026 event pairs, 3642 based on Foata normal form. 128/11760 useless extension candidates. Maximal degree in co-relation 19002. Up to 6718 conditions per place. [2023-08-31 11:18:18,009 INFO L137 encePairwiseOnDemand]: 848/858 looper letters, 84 selfloop transitions, 0 changer transitions 0/264 dead transitions. [2023-08-31 11:18:18,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 264 transitions, 705 flow [2023-08-31 11:18:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 11:18:18,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 11:18:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1146 transitions. [2023-08-31 11:18:18,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6678321678321678 [2023-08-31 11:18:18,026 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1146 transitions. [2023-08-31 11:18:18,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1146 transitions. [2023-08-31 11:18:18,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 11:18:18,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1146 transitions. [2023-08-31 11:18:18,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 573.0) internal successors, (1146), 2 states have internal predecessors, (1146), 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) [2023-08-31 11:18:18,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 858.0) internal successors, (2574), 3 states have internal predecessors, (2574), 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) [2023-08-31 11:18:18,043 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 858.0) internal successors, (2574), 3 states have internal predecessors, (2574), 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) [2023-08-31 11:18:18,045 INFO L175 Difference]: Start difference. First operand has 272 places, 275 transitions, 559 flow. Second operand 2 states and 1146 transitions. [2023-08-31 11:18:18,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 264 transitions, 705 flow [2023-08-31 11:18:18,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 264 transitions, 700 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 11:18:18,059 INFO L231 Difference]: Finished difference. Result has 262 places, 264 transitions, 532 flow [2023-08-31 11:18:18,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=858, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=532, PETRI_PLACES=262, PETRI_TRANSITIONS=264} [2023-08-31 11:18:18,064 INFO L281 CegarLoopForPetriNet]: 272 programPoint places, -10 predicate places. [2023-08-31 11:18:18,065 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 264 transitions, 532 flow [2023-08-31 11:18:18,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 526.5) internal successors, (1053), 2 states have internal predecessors, (1053), 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) [2023-08-31 11:18:18,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:18:18,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:18:18,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 11:18:18,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-31 11:18:18,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:18:18,078 INFO L85 PathProgramCache]: Analyzing trace with hash -103841326, now seen corresponding path program 1 times [2023-08-31 11:18:18,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:18:18,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147572410] [2023-08-31 11:18:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:18:18,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:18:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 11:18:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 11:18:18,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 11:18:18,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147572410] [2023-08-31 11:18:18,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147572410] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 11:18:18,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 11:18:18,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 11:18:18,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542183501] [2023-08-31 11:18:18,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 11:18:18,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 11:18:18,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 11:18:18,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 11:18:18,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 11:18:18,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 520 out of 858 [2023-08-31 11:18:18,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 264 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 522.6666666666666) internal successors, (1568), 3 states have internal predecessors, (1568), 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) [2023-08-31 11:18:18,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 11:18:18,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 520 of 858 [2023-08-31 11:18:18,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 11:18:20,907 INFO L130 PetriNetUnfolder]: 6999/19846 cut-off events. [2023-08-31 11:18:20,907 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-31 11:18:20,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31284 conditions, 19846 events. 6999/19846 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 174567 event pairs, 1613 based on Foata normal form. 0/18303 useless extension candidates. Maximal degree in co-relation 31281. Up to 6192 conditions per place. [2023-08-31 11:18:21,022 INFO L137 encePairwiseOnDemand]: 853/858 looper letters, 163 selfloop transitions, 4 changer transitions 0/343 dead transitions. [2023-08-31 11:18:21,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 343 transitions, 1025 flow [2023-08-31 11:18:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 11:18:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 11:18:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1728 transitions. [2023-08-31 11:18:21,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6713286713286714 [2023-08-31 11:18:21,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1728 transitions. [2023-08-31 11:18:21,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1728 transitions. [2023-08-31 11:18:21,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 11:18:21,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1728 transitions. [2023-08-31 11:18:21,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 576.0) internal successors, (1728), 3 states have internal predecessors, (1728), 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) [2023-08-31 11:18:21,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 858.0) internal successors, (3432), 4 states have internal predecessors, (3432), 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) [2023-08-31 11:18:21,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 858.0) internal successors, (3432), 4 states have internal predecessors, (3432), 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) [2023-08-31 11:18:21,049 INFO L175 Difference]: Start difference. First operand has 262 places, 264 transitions, 532 flow. Second operand 3 states and 1728 transitions. [2023-08-31 11:18:21,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 343 transitions, 1025 flow [2023-08-31 11:18:21,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 343 transitions, 1025 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 11:18:21,060 INFO L231 Difference]: Finished difference. Result has 266 places, 268 transitions, 566 flow [2023-08-31 11:18:21,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=858, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=266, PETRI_TRANSITIONS=268} [2023-08-31 11:18:21,062 INFO L281 CegarLoopForPetriNet]: 272 programPoint places, -6 predicate places. [2023-08-31 11:18:21,062 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 268 transitions, 566 flow [2023-08-31 11:18:21,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 522.6666666666666) internal successors, (1568), 3 states have internal predecessors, (1568), 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) [2023-08-31 11:18:21,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:18:21,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:18:21,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 11:18:21,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-31 11:18:21,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:18:21,069 INFO L85 PathProgramCache]: Analyzing trace with hash 696512687, now seen corresponding path program 1 times [2023-08-31 11:18:21,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:18:21,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117062384] [2023-08-31 11:18:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:18:21,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:18:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 11:18:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 11:18:21,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 11:18:21,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117062384] [2023-08-31 11:18:21,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117062384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 11:18:21,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 11:18:21,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 11:18:21,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746900183] [2023-08-31 11:18:21,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 11:18:21,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 11:18:21,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 11:18:21,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 11:18:21,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 11:18:22,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 858 [2023-08-31 11:18:22,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 268 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 427.5) internal successors, (2565), 6 states have internal predecessors, (2565), 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) [2023-08-31 11:18:22,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 11:18:22,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 858 [2023-08-31 11:18:22,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 11:18:28,058 INFO L130 PetriNetUnfolder]: 25403/51176 cut-off events. [2023-08-31 11:18:28,058 INFO L131 PetriNetUnfolder]: For 910/910 co-relation queries the response was YES. [2023-08-31 11:18:28,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94190 conditions, 51176 events. 25403/51176 cut-off events. For 910/910 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 407476 event pairs, 13934 based on Foata normal form. 0/47784 useless extension candidates. Maximal degree in co-relation 94185. Up to 30658 conditions per place. [2023-08-31 11:18:28,349 INFO L137 encePairwiseOnDemand]: 802/858 looper letters, 282 selfloop transitions, 86 changer transitions 0/482 dead transitions. [2023-08-31 11:18:28,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 482 transitions, 1762 flow [2023-08-31 11:18:28,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 11:18:28,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 11:18:28,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2925 transitions. [2023-08-31 11:18:28,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-08-31 11:18:28,357 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2925 transitions. [2023-08-31 11:18:28,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2925 transitions. [2023-08-31 11:18:28,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 11:18:28,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2925 transitions. [2023-08-31 11:18:28,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 487.5) internal successors, (2925), 6 states have internal predecessors, (2925), 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) [2023-08-31 11:18:28,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 858.0) internal successors, (6006), 7 states have internal predecessors, (6006), 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) [2023-08-31 11:18:28,376 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 858.0) internal successors, (6006), 7 states have internal predecessors, (6006), 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) [2023-08-31 11:18:28,376 INFO L175 Difference]: Start difference. First operand has 266 places, 268 transitions, 566 flow. Second operand 6 states and 2925 transitions. [2023-08-31 11:18:28,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 482 transitions, 1762 flow [2023-08-31 11:18:28,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 482 transitions, 1746 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 11:18:28,391 INFO L231 Difference]: Finished difference. Result has 274 places, 350 transitions, 1170 flow [2023-08-31 11:18:28,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=858, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1170, PETRI_PLACES=274, PETRI_TRANSITIONS=350} [2023-08-31 11:18:28,393 INFO L281 CegarLoopForPetriNet]: 272 programPoint places, 2 predicate places. [2023-08-31 11:18:28,393 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 350 transitions, 1170 flow [2023-08-31 11:18:28,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 427.5) internal successors, (2565), 6 states have internal predecessors, (2565), 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) [2023-08-31 11:18:28,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:18:28,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:18:28,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 11:18:28,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-31 11:18:28,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:18:28,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1976914453, now seen corresponding path program 1 times [2023-08-31 11:18:28,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:18:28,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709139361] [2023-08-31 11:18:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:18:28,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:18:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 11:18:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 11:18:28,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 11:18:28,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709139361] [2023-08-31 11:18:28,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709139361] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 11:18:28,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 11:18:28,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 11:18:28,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700693675] [2023-08-31 11:18:28,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 11:18:28,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 11:18:28,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 11:18:28,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 11:18:28,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 11:18:29,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 858 [2023-08-31 11:18:29,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 350 transitions, 1170 flow. Second operand has 6 states, 6 states have (on average 454.6666666666667) internal successors, (2728), 6 states have internal predecessors, (2728), 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) [2023-08-31 11:18:29,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 11:18:29,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 858 [2023-08-31 11:18:29,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 11:18:57,316 INFO L130 PetriNetUnfolder]: 141595/261054 cut-off events. [2023-08-31 11:18:57,316 INFO L131 PetriNetUnfolder]: For 64798/68417 co-relation queries the response was YES. [2023-08-31 11:18:57,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561745 conditions, 261054 events. 141595/261054 cut-off events. For 64798/68417 co-relation queries the response was YES. Maximal size of possible extension queue 1596. Compared 2535521 event pairs, 43343 based on Foata normal form. 675/242650 useless extension candidates. Maximal degree in co-relation 561736. Up to 145490 conditions per place. [2023-08-31 11:18:59,015 INFO L137 encePairwiseOnDemand]: 800/858 looper letters, 485 selfloop transitions, 429 changer transitions 0/1072 dead transitions. [2023-08-31 11:18:59,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1072 transitions, 5587 flow [2023-08-31 11:18:59,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 11:18:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 11:18:59,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3333 transitions. [2023-08-31 11:18:59,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2023-08-31 11:18:59,023 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3333 transitions. [2023-08-31 11:18:59,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3333 transitions. [2023-08-31 11:18:59,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 11:18:59,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3333 transitions. [2023-08-31 11:18:59,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 555.5) internal successors, (3333), 6 states have internal predecessors, (3333), 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) [2023-08-31 11:18:59,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 858.0) internal successors, (6006), 7 states have internal predecessors, (6006), 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) [2023-08-31 11:18:59,042 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 858.0) internal successors, (6006), 7 states have internal predecessors, (6006), 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) [2023-08-31 11:18:59,043 INFO L175 Difference]: Start difference. First operand has 274 places, 350 transitions, 1170 flow. Second operand 6 states and 3333 transitions. [2023-08-31 11:18:59,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1072 transitions, 5587 flow [2023-08-31 11:18:59,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 1072 transitions, 5587 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 11:18:59,224 INFO L231 Difference]: Finished difference. Result has 284 places, 778 transitions, 4972 flow [2023-08-31 11:18:59,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=858, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4972, PETRI_PLACES=284, PETRI_TRANSITIONS=778} [2023-08-31 11:18:59,225 INFO L281 CegarLoopForPetriNet]: 272 programPoint places, 12 predicate places. [2023-08-31 11:18:59,226 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 778 transitions, 4972 flow [2023-08-31 11:18:59,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 454.6666666666667) internal successors, (2728), 6 states have internal predecessors, (2728), 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) [2023-08-31 11:18:59,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:18:59,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:18:59,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 11:18:59,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-31 11:18:59,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:18:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash 212381141, now seen corresponding path program 1 times [2023-08-31 11:18:59,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:18:59,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896036054] [2023-08-31 11:18:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:18:59,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:18:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 11:18:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 11:18:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 11:18:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896036054] [2023-08-31 11:18:59,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896036054] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 11:18:59,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 11:18:59,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 11:18:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580451878] [2023-08-31 11:18:59,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 11:18:59,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 11:18:59,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 11:18:59,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 11:18:59,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 11:19:00,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 858 [2023-08-31 11:19:00,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 778 transitions, 4972 flow. Second operand has 6 states, 6 states have (on average 368.1666666666667) internal successors, (2209), 6 states have internal predecessors, (2209), 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) [2023-08-31 11:19:00,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 11:19:00,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 858 [2023-08-31 11:19:00,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 11:20:13,961 INFO L130 PetriNetUnfolder]: 300112/511577 cut-off events. [2023-08-31 11:20:13,961 INFO L131 PetriNetUnfolder]: For 415267/420779 co-relation queries the response was YES. [2023-08-31 11:20:16,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435432 conditions, 511577 events. 300112/511577 cut-off events. For 415267/420779 co-relation queries the response was YES. Maximal size of possible extension queue 1867. Compared 4552154 event pairs, 169100 based on Foata normal form. 84/487341 useless extension candidates. Maximal degree in co-relation 1435418. Up to 444352 conditions per place. [2023-08-31 11:20:18,101 INFO L137 encePairwiseOnDemand]: 806/858 looper letters, 811 selfloop transitions, 242 changer transitions 0/1124 dead transitions. [2023-08-31 11:20:18,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1124 transitions, 8350 flow [2023-08-31 11:20:18,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 11:20:18,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 11:20:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2686 transitions. [2023-08-31 11:20:18,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217560217560218 [2023-08-31 11:20:18,108 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2686 transitions. [2023-08-31 11:20:18,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2686 transitions. [2023-08-31 11:20:18,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 11:20:18,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2686 transitions. [2023-08-31 11:20:18,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 447.6666666666667) internal successors, (2686), 6 states have internal predecessors, (2686), 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) [2023-08-31 11:20:18,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 858.0) internal successors, (6006), 7 states have internal predecessors, (6006), 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) [2023-08-31 11:20:18,122 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 858.0) internal successors, (6006), 7 states have internal predecessors, (6006), 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) [2023-08-31 11:20:18,122 INFO L175 Difference]: Start difference. First operand has 284 places, 778 transitions, 4972 flow. Second operand 6 states and 2686 transitions. [2023-08-31 11:20:18,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 1124 transitions, 8350 flow [2023-08-31 11:21:58,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1124 transitions, 8350 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 11:21:58,746 INFO L231 Difference]: Finished difference. Result has 293 places, 1000 transitions, 6846 flow [2023-08-31 11:21:58,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=858, PETRI_DIFFERENCE_MINUEND_FLOW=4972, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6846, PETRI_PLACES=293, PETRI_TRANSITIONS=1000} [2023-08-31 11:21:58,748 INFO L281 CegarLoopForPetriNet]: 272 programPoint places, 21 predicate places. [2023-08-31 11:21:58,748 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 1000 transitions, 6846 flow [2023-08-31 11:21:58,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 368.1666666666667) internal successors, (2209), 6 states have internal predecessors, (2209), 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) [2023-08-31 11:21:58,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:21:58,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:21:58,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 11:21:58,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-31 11:21:58,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:21:58,750 INFO L85 PathProgramCache]: Analyzing trace with hash 761149045, now seen corresponding path program 1 times [2023-08-31 11:21:58,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:21:58,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720685611] [2023-08-31 11:21:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:21:58,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:21:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 11:21:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 11:21:58,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 11:21:58,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720685611] [2023-08-31 11:21:58,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720685611] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 11:21:58,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 11:21:58,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 11:21:58,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694347238] [2023-08-31 11:21:58,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 11:21:58,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 11:21:58,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 11:21:58,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 11:21:58,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 11:21:58,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 521 out of 858 [2023-08-31 11:21:58,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 1000 transitions, 6846 flow. Second operand has 3 states, 3 states have (on average 523.6666666666666) internal successors, (1571), 3 states have internal predecessors, (1571), 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) [2023-08-31 11:21:58,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 11:21:58,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 521 of 858 [2023-08-31 11:21:58,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand