./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash adb74bb4036ab42451aee4c4c2c855416fb34747e80c1114ce822e44c6b19376 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:03:42,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:03:42,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:03:42,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:03:42,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:03:42,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:03:42,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:03:42,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:03:42,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:03:42,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:03:42,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:03:42,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:03:42,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:03:42,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:03:42,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:03:42,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:03:42,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:03:42,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:03:42,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:03:42,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:03:42,478 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:03:42,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:03:42,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:03:42,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:03:42,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:03:42,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:03:42,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:03:42,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:03:42,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:03:42,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:03:42,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:03:42,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:03:42,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:03:42,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:03:42,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:03:42,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:03:42,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:03:42,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:03:42,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:03:42,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:03:42,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:03:42,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:03:42,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:03:42,505 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:03:42,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:03:42,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:03:42,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:03:42,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:03:42,507 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:03:42,507 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:03:42,507 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:03:42,507 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:03:42,507 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:03:42,508 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:03:42,508 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:03:42,508 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:03:42,508 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:03:42,508 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:03:42,508 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:03:42,508 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:03:42,509 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:03:42,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:03:42,509 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:03:42,509 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:03:42,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:03:42,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:03:42,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:03:42,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:03:42,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:03:42,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:03:42,510 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:03:42,511 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:03:42,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:03:42,511 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:03:42,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:03:42,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:03:42,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:03:42,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:03:42,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:03:42,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:03:42,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:03:42,512 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:03:42,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:03:42,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:03:42,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:03:42,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:03:42,513 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/UTaipan-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adb74bb4036ab42451aee4c4c2c855416fb34747e80c1114ce822e44c6b19376 [2022-04-18 19:03:42,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:03:42,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:03:42,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:03:42,670 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:03:42,670 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:03:42,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i [2022-04-18 19:03:42,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5e1222c5/6e34f693a36548b7b79a3caf4016d2ed/FLAG0fc2f9a7e [2022-04-18 19:03:43,093 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:03:43,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i [2022-04-18 19:03:43,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5e1222c5/6e34f693a36548b7b79a3caf4016d2ed/FLAG0fc2f9a7e [2022-04-18 19:03:43,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5e1222c5/6e34f693a36548b7b79a3caf4016d2ed [2022-04-18 19:03:43,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:03:43,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:03:43,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:03:43,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:03:43,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:03:43,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:03:43" (1/1) ... [2022-04-18 19:03:43,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f38f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:43, skipping insertion in model container [2022-04-18 19:03:43,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:03:43" (1/1) ... [2022-04-18 19:03:43,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:03:43,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:03:43,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[30697,30710] [2022-04-18 19:03:43,830 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[30970,30983] [2022-04-18 19:03:43,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[31233,31246] [2022-04-18 19:03:43,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:03:43,841 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:03:43,870 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[30697,30710] [2022-04-18 19:03:43,872 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[30970,30983] [2022-04-18 19:03:43,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[31233,31246] [2022-04-18 19:03:43,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:03:43,907 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:03:43,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:43 WrapperNode [2022-04-18 19:03:43,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:03:43,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:03:43,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:03:43,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:03:43,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:43" (1/1) ... [2022-04-18 19:03:43,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:43" (1/1) ... [2022-04-18 19:03:43,946 INFO L137 Inliner]: procedures = 176, calls = 34, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 213 [2022-04-18 19:03:43,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:03:43,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:03:43,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:03:43,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:03:43,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:43" (1/1) ... [2022-04-18 19:03:43,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:43" (1/1) ... [2022-04-18 19:03:43,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:43" (1/1) ... [2022-04-18 19:03:43,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:43" (1/1) ... [2022-04-18 19:03:43,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:43" (1/1) ... [2022-04-18 19:03:43,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:43" (1/1) ... [2022-04-18 19:03:43,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:43" (1/1) ... [2022-04-18 19:03:43,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:03:43,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:03:43,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:03:43,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:03:43,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:43" (1/1) ... [2022-04-18 19:03:44,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:03:44,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:03:44,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 19:03:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 19:03:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 19:03:44,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 19:03:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:03:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:03:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:03:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:03:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:03:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:03:44,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:03:44,043 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 19:03:44,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 19:03:44,118 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:03:44,119 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:03:44,361 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:03:44,511 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:03:44,511 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-04-18 19:03:44,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:03:44 BoogieIcfgContainer [2022-04-18 19:03:44,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:03:44,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:03:44,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:03:44,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:03:44,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:03:43" (1/3) ... [2022-04-18 19:03:44,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6b9ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:03:44, skipping insertion in model container [2022-04-18 19:03:44,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:43" (2/3) ... [2022-04-18 19:03:44,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6b9ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:03:44, skipping insertion in model container [2022-04-18 19:03:44,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:03:44" (3/3) ... [2022-04-18 19:03:44,520 INFO L111 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2022-04-18 19:03:44,524 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:03:44,524 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:03:44,524 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-04-18 19:03:44,524 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:03:44,589 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:03:44,630 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:03:44,634 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 19:03:44,634 INFO L341 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-04-18 19:03:44,642 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:03:44,649 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 170 transitions, 345 flow [2022-04-18 19:03:44,650 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 170 transitions, 345 flow [2022-04-18 19:03:44,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 160 places, 170 transitions, 345 flow [2022-04-18 19:03:44,685 INFO L129 PetriNetUnfolder]: 14/181 cut-off events. [2022-04-18 19:03:44,685 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:03:44,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 181 events. 14/181 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 301 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 150. Up to 4 conditions per place. [2022-04-18 19:03:44,694 INFO L116 LiptonReduction]: Number of co-enabled transitions 3836 [2022-04-18 19:04:03,800 INFO L131 LiptonReduction]: Checked pairs total: 4125 [2022-04-18 19:04:03,800 INFO L133 LiptonReduction]: Total number of compositions: 205 [2022-04-18 19:04:03,806 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 33 transitions, 71 flow [2022-04-18 19:04:03,831 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 112 states, 79 states have (on average 2.7974683544303796) internal successors, (221), 111 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:04:03,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 79 states have (on average 2.7974683544303796) internal successors, (221), 111 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:04:03,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:04:03,844 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:04:03,845 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:04:03,845 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 19:04:03,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:04:03,849 INFO L85 PathProgramCache]: Analyzing trace with hash 30148089, now seen corresponding path program 1 times [2022-04-18 19:04:03,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:04:03,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903182219] [2022-04-18 19:04:03,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:04:03,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:04:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:04:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:04:04,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:04:04,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903182219] [2022-04-18 19:04:04,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903182219] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:04:04,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:04:04,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:04:04,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272430189] [2022-04-18 19:04:04,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:04:04,018 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:04:04,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:04:04,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:04:04,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:04:04,038 INFO L87 Difference]: Start difference. First operand has 112 states, 79 states have (on average 2.7974683544303796) internal successors, (221), 111 states have internal predecessors, (221), 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) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:04:04,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:04:04,098 INFO L93 Difference]: Finished difference Result 27 states and 57 transitions. [2022-04-18 19:04:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:04:04,099 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2022-04-18 19:04:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:04:04,104 INFO L225 Difference]: With dead ends: 27 [2022-04-18 19:04:04,104 INFO L226 Difference]: Without dead ends: 27 [2022-04-18 19:04:04,105 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:04:04,107 INFO L913 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:04:04,107 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:04:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-18 19:04:04,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-18 19:04:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:04:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 57 transitions. [2022-04-18 19:04:04,127 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 57 transitions. Word has length 4 [2022-04-18 19:04:04,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:04:04,127 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 57 transitions. [2022-04-18 19:04:04,128 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:04:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 57 transitions. [2022-04-18 19:04:04,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:04:04,128 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:04:04,128 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 19:04:04,129 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:04:04,129 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 19:04:04,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:04:04,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1092577713, now seen corresponding path program 1 times [2022-04-18 19:04:04,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:04:04,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825802292] [2022-04-18 19:04:04,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:04:04,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:04:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:04:04,161 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:04:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:04:04,190 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:04:04,191 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:04:04,192 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-04-18 19:04:04,193 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2022-04-18 19:04:04,193 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2022-04-18 19:04:04,193 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2022-04-18 19:04:04,193 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2022-04-18 19:04:04,194 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2022-04-18 19:04:04,194 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2022-04-18 19:04:04,194 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2022-04-18 19:04:04,194 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2022-04-18 19:04:04,194 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2022-04-18 19:04:04,195 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2022-04-18 19:04:04,195 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2022-04-18 19:04:04,195 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2022-04-18 19:04:04,195 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2022-04-18 19:04:04,195 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2022-04-18 19:04:04,195 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2022-04-18 19:04:04,196 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2022-04-18 19:04:04,196 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2022-04-18 19:04:04,196 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2022-04-18 19:04:04,196 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2022-04-18 19:04:04,196 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2022-04-18 19:04:04,197 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2022-04-18 19:04:04,197 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2022-04-18 19:04:04,197 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2022-04-18 19:04:04,197 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2022-04-18 19:04:04,197 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2022-04-18 19:04:04,197 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2022-04-18 19:04:04,198 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2022-04-18 19:04:04,198 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2022-04-18 19:04:04,198 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2022-04-18 19:04:04,198 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2022-04-18 19:04:04,198 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2022-04-18 19:04:04,199 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2022-04-18 19:04:04,199 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:04:04,200 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 19:04:04,201 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:04:04,201 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:04:04,230 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:04:04,232 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:04:04,232 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 19:04:04,232 INFO L341 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-04-18 19:04:04,234 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:04:04,235 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 288 places, 308 transitions, 628 flow [2022-04-18 19:04:04,235 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 288 places, 308 transitions, 628 flow [2022-04-18 19:04:04,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 288 places, 308 transitions, 628 flow [2022-04-18 19:04:04,279 INFO L129 PetriNetUnfolder]: 27/332 cut-off events. [2022-04-18 19:04:04,282 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:04:04,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 332 events. 27/332 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1068 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 287. Up to 6 conditions per place. [2022-04-18 19:04:04,304 INFO L116 LiptonReduction]: Number of co-enabled transitions 45484 [2022-04-18 19:04:27,156 WARN L232 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 118 DAG size of output: 103 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:04:48,469 WARN L232 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 126 DAG size of output: 111 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:05:05,865 WARN L232 SmtUtils]: Spent 5.43s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:05:18,435 WARN L232 SmtUtils]: Spent 12.57s on a formula simplification. DAG size of input: 125 DAG size of output: 123 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:05:26,682 WARN L232 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:05:57,323 WARN L232 SmtUtils]: Spent 9.58s on a formula simplification. DAG size of input: 114 DAG size of output: 111 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:06:04,050 WARN L232 SmtUtils]: Spent 6.73s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:06:20,337 WARN L232 SmtUtils]: Spent 16.29s on a formula simplification. DAG size of input: 130 DAG size of output: 125 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:06:28,677 WARN L232 SmtUtils]: Spent 8.34s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:06:59,921 INFO L131 LiptonReduction]: Checked pairs total: 203903 [2022-04-18 19:06:59,922 INFO L133 LiptonReduction]: Total number of compositions: 327 [2022-04-18 19:06:59,923 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 116 places, 123 transitions, 258 flow [2022-04-18 19:07:00,273 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 16793 states, 16200 states have (on average 3.118456790123457) internal successors, (50519), 16792 states have internal predecessors, (50519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:07:00,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 16793 states, 16200 states have (on average 3.118456790123457) internal successors, (50519), 16792 states have internal predecessors, (50519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:07:00,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:07:00,354 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:07:00,354 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:07:00,354 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-04-18 19:07:00,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:07:00,356 INFO L85 PathProgramCache]: Analyzing trace with hash 52869757, now seen corresponding path program 1 times [2022-04-18 19:07:00,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:07:00,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242328223] [2022-04-18 19:07:00,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:07:00,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:07:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:07:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:07:00,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:07:00,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242328223] [2022-04-18 19:07:00,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242328223] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:07:00,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:07:00,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:07:00,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918691759] [2022-04-18 19:07:00,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:07:00,406 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:07:00,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:07:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:07:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:07:00,436 INFO L87 Difference]: Start difference. First operand has 16793 states, 16200 states have (on average 3.118456790123457) internal successors, (50519), 16792 states have internal predecessors, (50519), 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) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:07:00,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:07:00,850 INFO L93 Difference]: Finished difference Result 9201 states and 26910 transitions. [2022-04-18 19:07:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:07:00,851 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2022-04-18 19:07:00,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:07:00,900 INFO L225 Difference]: With dead ends: 9201 [2022-04-18 19:07:00,900 INFO L226 Difference]: Without dead ends: 9201 [2022-04-18 19:07:00,900 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:07:00,901 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-18 19:07:00,901 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-18 19:07:00,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9201 states. [2022-04-18 19:07:01,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9201 to 9201. [2022-04-18 19:07:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9201 states, 9152 states have (on average 2.940340909090909) internal successors, (26910), 9200 states have internal predecessors, (26910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:07:01,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9201 states to 9201 states and 26910 transitions. [2022-04-18 19:07:01,355 INFO L78 Accepts]: Start accepts. Automaton has 9201 states and 26910 transitions. Word has length 4 [2022-04-18 19:07:01,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:07:01,356 INFO L478 AbstractCegarLoop]: Abstraction has 9201 states and 26910 transitions. [2022-04-18 19:07:01,356 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:07:01,356 INFO L276 IsEmpty]: Start isEmpty. Operand 9201 states and 26910 transitions. [2022-04-18 19:07:01,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:07:01,357 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:07:01,357 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 19:07:01,357 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:07:01,357 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-04-18 19:07:01,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:07:01,358 INFO L85 PathProgramCache]: Analyzing trace with hash -731940637, now seen corresponding path program 1 times [2022-04-18 19:07:01,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:07:01,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513156591] [2022-04-18 19:07:01,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:07:01,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:07:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:07:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:07:01,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:07:01,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513156591] [2022-04-18 19:07:01,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513156591] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:07:01,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:07:01,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:07:01,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488679341] [2022-04-18 19:07:01,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:07:01,400 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:07:01,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:07:01,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:07:01,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:07:01,401 INFO L87 Difference]: Start difference. First operand 9201 states and 26910 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:07:02,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:07:02,019 INFO L93 Difference]: Finished difference Result 11827 states and 34536 transitions. [2022-04-18 19:07:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:07:02,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2022-04-18 19:07:02,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:07:02,064 INFO L225 Difference]: With dead ends: 11827 [2022-04-18 19:07:02,064 INFO L226 Difference]: Without dead ends: 11827 [2022-04-18 19:07:02,065 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:07:02,065 INFO L913 BasicCegarLoop]: 65 mSDtfsCounter, 90 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-18 19:07:02,066 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 109 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-18 19:07:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11827 states. [2022-04-18 19:07:02,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11827 to 8977. [2022-04-18 19:07:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8977 states, 8937 states have (on average 2.9602774980418487) internal successors, (26456), 8976 states have internal predecessors, (26456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:07:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8977 states to 8977 states and 26456 transitions. [2022-04-18 19:07:02,338 INFO L78 Accepts]: Start accepts. Automaton has 8977 states and 26456 transitions. Word has length 6 [2022-04-18 19:07:02,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:07:02,339 INFO L478 AbstractCegarLoop]: Abstraction has 8977 states and 26456 transitions. [2022-04-18 19:07:02,339 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:07:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 8977 states and 26456 transitions. [2022-04-18 19:07:02,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 19:07:02,340 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:07:02,340 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-04-18 19:07:02,340 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 19:07:02,340 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-04-18 19:07:02,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:07:02,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1687331542, now seen corresponding path program 1 times [2022-04-18 19:07:02,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:07:02,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64975048] [2022-04-18 19:07:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:07:02,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:07:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:07:02,351 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:07:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:07:02,361 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:07:02,361 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:07:02,361 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2022-04-18 19:07:02,362 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2022-04-18 19:07:02,362 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2022-04-18 19:07:02,362 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2022-04-18 19:07:02,362 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2022-04-18 19:07:02,362 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2022-04-18 19:07:02,362 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2022-04-18 19:07:02,362 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2022-04-18 19:07:02,363 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2022-04-18 19:07:02,363 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2022-04-18 19:07:02,363 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2022-04-18 19:07:02,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2022-04-18 19:07:02,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2022-04-18 19:07:02,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2022-04-18 19:07:02,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2022-04-18 19:07:02,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2022-04-18 19:07:02,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2022-04-18 19:07:02,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2022-04-18 19:07:02,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2022-04-18 19:07:02,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2022-04-18 19:07:02,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2022-04-18 19:07:02,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2022-04-18 19:07:02,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2022-04-18 19:07:02,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2022-04-18 19:07:02,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2022-04-18 19:07:02,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2022-04-18 19:07:02,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2022-04-18 19:07:02,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2022-04-18 19:07:02,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2022-04-18 19:07:02,370 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2022-04-18 19:07:02,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2022-04-18 19:07:02,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2022-04-18 19:07:02,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2022-04-18 19:07:02,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2022-04-18 19:07:02,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2022-04-18 19:07:02,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2022-04-18 19:07:02,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2022-04-18 19:07:02,372 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2022-04-18 19:07:02,372 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2022-04-18 19:07:02,372 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2022-04-18 19:07:02,372 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2022-04-18 19:07:02,372 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2022-04-18 19:07:02,372 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2022-04-18 19:07:02,372 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2022-04-18 19:07:02,372 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2022-04-18 19:07:02,373 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2022-04-18 19:07:02,373 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2022-04-18 19:07:02,373 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2022-04-18 19:07:02,373 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2022-04-18 19:07:02,373 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 19:07:02,374 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 19:07:02,374 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:07:02,374 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 19:07:02,412 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:07:02,413 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:07:02,413 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 19:07:02,413 INFO L341 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2022-04-18 19:07:02,415 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:07:02,416 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 416 places, 446 transitions, 913 flow [2022-04-18 19:07:02,416 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 416 places, 446 transitions, 913 flow [2022-04-18 19:07:02,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 416 places, 446 transitions, 913 flow [2022-04-18 19:07:02,547 INFO L129 PetriNetUnfolder]: 40/483 cut-off events. [2022-04-18 19:07:02,554 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 19:07:02,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 483 events. 40/483 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1979 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 424. Up to 8 conditions per place. [2022-04-18 19:07:02,599 INFO L116 LiptonReduction]: Number of co-enabled transitions 124944 [2022-04-18 19:07:31,765 WARN L232 SmtUtils]: Spent 12.72s on a formula simplification. DAG size of input: 107 DAG size of output: 100 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:07:54,603 WARN L232 SmtUtils]: Spent 19.88s on a formula simplification. DAG size of input: 126 DAG size of output: 111 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:08:06,249 WARN L232 SmtUtils]: Spent 11.65s on a formula simplification that was a NOOP. DAG size: 110 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:08:19,163 WARN L232 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 114 DAG size of output: 111 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:08:26,360 WARN L232 SmtUtils]: Spent 7.20s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:08:35,657 WARN L232 SmtUtils]: Spent 9.30s on a formula simplification. DAG size of input: 130 DAG size of output: 125 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:08:46,969 WARN L232 SmtUtils]: Spent 11.31s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:09:08,260 WARN L232 SmtUtils]: Spent 21.20s on a formula simplification. DAG size of input: 116 DAG size of output: 109 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:09:14,085 WARN L232 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:09:38,322 WARN L232 SmtUtils]: Spent 24.24s on a formula simplification. DAG size of input: 138 DAG size of output: 123 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:09:45,171 WARN L232 SmtUtils]: Spent 6.85s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:10:23,508 WARN L232 SmtUtils]: Spent 35.10s on a formula simplification. DAG size of input: 116 DAG size of output: 109 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:10:42,483 WARN L232 SmtUtils]: Spent 18.97s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:11:08,840 WARN L232 SmtUtils]: Spent 26.36s on a formula simplification. DAG size of input: 138 DAG size of output: 123 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:11:34,307 WARN L232 SmtUtils]: Spent 25.47s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:11:35,387 INFO L131 LiptonReduction]: Checked pairs total: 584490 [2022-04-18 19:11:35,388 INFO L133 LiptonReduction]: Total number of compositions: 472 [2022-04-18 19:11:35,389 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 171 places, 182 transitions, 385 flow [2022-04-18 19:11:57,481 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 890437 states, 880308 states have (on average 4.150374641602712) internal successors, (3653608), 890436 states have internal predecessors, (3653608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:11:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 890437 states, 880308 states have (on average 4.150374641602712) internal successors, (3653608), 890436 states have internal predecessors, (3653608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:11:58,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:11:58,887 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:11:58,887 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:11:58,888 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-04-18 19:11:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:11:58,897 INFO L85 PathProgramCache]: Analyzing trace with hash 85188221, now seen corresponding path program 1 times [2022-04-18 19:11:58,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:11:58,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585208316] [2022-04-18 19:11:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:11:58,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:11:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:11:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:11:58,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:11:58,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585208316] [2022-04-18 19:11:58,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585208316] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:11:58,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:11:58,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:11:58,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393640571] [2022-04-18 19:11:58,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:11:58,909 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:11:58,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:11:58,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:11:58,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:12:00,285 INFO L87 Difference]: Start difference. First operand has 890437 states, 880308 states have (on average 4.150374641602712) internal successors, (3653608), 890436 states have internal predecessors, (3653608), 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) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:12:09,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:12:09,128 INFO L93 Difference]: Finished difference Result 395685 states and 1580460 transitions. [2022-04-18 19:12:09,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:12:09,128 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2022-04-18 19:12:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:12:13,343 INFO L225 Difference]: With dead ends: 395685 [2022-04-18 19:12:13,344 INFO L226 Difference]: Without dead ends: 395685 [2022-04-18 19:12:13,344 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:12:13,345 INFO L913 BasicCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:12:13,346 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-18 19:12:14,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395685 states.