./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c --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/weaver/chl-word-trans.wvr.c -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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 20:18:11,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 20:18:11,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 20:18:11,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 20:18:11,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 20:18:11,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 20:18:11,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 20:18:11,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 20:18:11,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 20:18:11,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 20:18:11,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 20:18:11,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 20:18:11,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 20:18:11,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 20:18:11,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 20:18:11,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 20:18:11,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 20:18:11,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 20:18:11,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 20:18:11,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 20:18:11,409 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 20:18:11,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 20:18:11,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 20:18:11,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 20:18:11,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 20:18:11,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 20:18:11,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 20:18:11,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 20:18:11,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 20:18:11,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 20:18:11,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 20:18:11,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 20:18:11,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 20:18:11,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 20:18:11,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 20:18:11,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 20:18:11,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 20:18:11,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 20:18:11,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 20:18:11,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 20:18:11,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 20:18:11,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 20:18:11,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 20:18:11,437 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 20:18:11,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 20:18:11,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 20:18:11,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 20:18:11,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 20:18:11,439 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 20:18:11,439 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 20:18:11,439 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 20:18:11,439 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 20:18:11,440 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 20:18:11,440 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 20:18:11,440 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 20:18:11,440 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 20:18:11,440 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 20:18:11,440 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 20:18:11,440 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 20:18:11,441 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 20:18:11,441 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 20:18:11,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 20:18:11,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 20:18:11,441 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 20:18:11,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 20:18:11,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 20:18:11,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 20:18:11,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 20:18:11,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 20:18:11,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 20:18:11,443 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 20:18:11,443 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 20:18:11,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 20:18:11,443 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 20:18:11,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 20:18:11,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 20:18:11,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 20:18:11,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:18:11,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 20:18:11,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 20:18:11,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 20:18:11,444 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 20:18:11,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 20:18:11,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 20:18:11,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 20:18:11,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 20:18:11,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 [2022-04-18 20:18:11,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 20:18:11,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 20:18:11,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 20:18:11,650 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 20:18:11,651 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 20:18:11,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2022-04-18 20:18:11,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d7fddb6f3/105c28134a6148d0b0d23bee965c05f6/FLAGaa8c182fd [2022-04-18 20:18:12,097 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 20:18:12,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2022-04-18 20:18:12,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d7fddb6f3/105c28134a6148d0b0d23bee965c05f6/FLAGaa8c182fd [2022-04-18 20:18:12,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d7fddb6f3/105c28134a6148d0b0d23bee965c05f6 [2022-04-18 20:18:12,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 20:18:12,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 20:18:12,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 20:18:12,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 20:18:12,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 20:18:12,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:18:12" (1/1) ... [2022-04-18 20:18:12,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c17c18f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:12, skipping insertion in model container [2022-04-18 20:18:12,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:18:12" (1/1) ... [2022-04-18 20:18:12,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 20:18:12,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 20:18:12,708 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3292,3305] [2022-04-18 20:18:12,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:18:12,721 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 20:18:12,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3292,3305] [2022-04-18 20:18:12,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:18:12,772 INFO L208 MainTranslator]: Completed translation [2022-04-18 20:18:12,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:12 WrapperNode [2022-04-18 20:18:12,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 20:18:12,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 20:18:12,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 20:18:12,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 20:18:12,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:12" (1/1) ... [2022-04-18 20:18:12,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:12" (1/1) ... [2022-04-18 20:18:12,842 INFO L137 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 264 [2022-04-18 20:18:12,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 20:18:12,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 20:18:12,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 20:18:12,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 20:18:12,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:12" (1/1) ... [2022-04-18 20:18:12,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:12" (1/1) ... [2022-04-18 20:18:12,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:12" (1/1) ... [2022-04-18 20:18:12,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:12" (1/1) ... [2022-04-18 20:18:12,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:12" (1/1) ... [2022-04-18 20:18:12,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:12" (1/1) ... [2022-04-18 20:18:12,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:12" (1/1) ... [2022-04-18 20:18:12,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 20:18:12,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 20:18:12,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 20:18:12,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 20:18:12,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:12" (1/1) ... [2022-04-18 20:18:12,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:18:12,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 20:18:12,984 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 20:18:12,990 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 20:18:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 20:18:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 20:18:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 20:18:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 20:18:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 20:18:13,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 20:18:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 20:18:13,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 20:18:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-04-18 20:18:13,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-04-18 20:18:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 20:18:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 20:18:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 20:18:13,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 20:18:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 20:18:13,030 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 20:18:13,110 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 20:18:13,111 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 20:18:13,688 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 20:18:13,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 20:18:13,709 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-04-18 20:18:13,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:18:13 BoogieIcfgContainer [2022-04-18 20:18:13,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 20:18:13,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 20:18:13,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 20:18:13,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 20:18:13,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:18:12" (1/3) ... [2022-04-18 20:18:13,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8846ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:18:13, skipping insertion in model container [2022-04-18 20:18:13,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:12" (2/3) ... [2022-04-18 20:18:13,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8846ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:18:13, skipping insertion in model container [2022-04-18 20:18:13,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:18:13" (3/3) ... [2022-04-18 20:18:13,717 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2022-04-18 20:18:13,720 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 20:18:13,720 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 20:18:13,721 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 78 error locations. [2022-04-18 20:18:13,721 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 20:18:13,796 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 20:18:13,825 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 20:18:13,829 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 20:18:13,829 INFO L341 AbstractCegarLoop]: Starting to check reachability of 138 error locations. [2022-04-18 20:18:13,843 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 20:18:13,851 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 660 places, 689 transitions, 1402 flow [2022-04-18 20:18:13,852 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 660 places, 689 transitions, 1402 flow [2022-04-18 20:18:13,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 660 places, 689 transitions, 1402 flow [2022-04-18 20:18:14,073 INFO L129 PetriNetUnfolder]: 39/686 cut-off events. [2022-04-18 20:18:14,073 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 20:18:14,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 686 events. 39/686 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1915 event pairs, 0 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 501. Up to 3 conditions per place. [2022-04-18 20:18:14,128 INFO L116 LiptonReduction]: Number of co-enabled transitions 105270 [2022-04-18 20:18:35,207 INFO L131 LiptonReduction]: Checked pairs total: 1182435 [2022-04-18 20:18:35,208 INFO L133 LiptonReduction]: Total number of compositions: 904 [2022-04-18 20:18:35,214 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 223 places, 234 transitions, 492 flow [2022-04-18 20:19:04,450 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1168660 states, 1152223 states have (on average 4.167974428561138) internal successors, (4802436), 1168659 states have internal predecessors, (4802436), 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 20:19:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 1168660 states, 1152223 states have (on average 4.167974428561138) internal successors, (4802436), 1168659 states have internal predecessors, (4802436), 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 20:19:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 20:19:09,075 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:19:09,076 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 20:19:09,076 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 134 more)] === [2022-04-18 20:19:09,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:19:09,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2703, now seen corresponding path program 1 times [2022-04-18 20:19:09,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:19:09,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568859424] [2022-04-18 20:19:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:19:09,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:19:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:19:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 20:19:09,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:19:09,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568859424] [2022-04-18 20:19:09,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568859424] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:19:09,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:19:09,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 20:19:09,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344248886] [2022-04-18 20:19:09,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:19:09,156 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 20:19:09,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:19:09,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 20:19:09,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 20:19:11,474 INFO L87 Difference]: Start difference. First operand has 1168660 states, 1152223 states have (on average 4.167974428561138) internal successors, (4802436), 1168659 states have internal predecessors, (4802436), 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 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 20:19:18,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:19:18,289 INFO L93 Difference]: Finished difference Result 449707 states and 1856849 transitions. [2022-04-18 20:19:18,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 20:19:18,292 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-04-18 20:19:18,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted.