./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.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/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-DataRace-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:28:20,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:28:20,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:28:20,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:28:20,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:28:20,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:28:20,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:28:20,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:28:20,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:28:20,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:28:20,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:28:20,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:28:20,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:28:20,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:28:20,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:28:20,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:28:20,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:28:20,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:28:20,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:28:20,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:28:20,448 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:28:20,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:28:20,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:28:20,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:28:20,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:28:20,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:28:20,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:28:20,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:28:20,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:28:20,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:28:20,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:28:20,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:28:20,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:28:20,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:28:20,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:28:20,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:28:20,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:28:20,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:28:20,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:28:20,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:28:20,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:28:20,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:28:20,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-DataRace-32bit-GemCutter_Default.epf [2022-04-18 18:28:20,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:28:20,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:28:20,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:28:20,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:28:20,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:28:20,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:28:20,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 18:28:20,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 18:28:20,498 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 18:28:20,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:28:20,499 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:28:20,499 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:28:20,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:28:20,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:28:20,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:28:20,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:28:20,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:28:20,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:28:20,500 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:28:20,500 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:28:20,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:28:20,500 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:28:20,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:28:20,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:28:20,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 18:28:20,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-18 18:28:20,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:28:20,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:28:20,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:28:20,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:28:20,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:28:20,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 18:28:20,502 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2022-04-18 18:28:20,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:28:20,502 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 18:28:20,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-04-18 18:28:20,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:28:20,503 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-04-18 18:28:20,503 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-04-18 18:28:20,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad [2022-04-18 18:28:20,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:28:20,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:28:20,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:28:20,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:28:20,711 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:28:20,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2022-04-18 18:28:20,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/9a2a10cdf/daf740bde9e446c6a5f6615c3c7e7dda/FLAGe1d416036 [2022-04-18 18:28:21,078 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:28:21,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2022-04-18 18:28:21,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/9a2a10cdf/daf740bde9e446c6a5f6615c3c7e7dda/FLAGe1d416036 [2022-04-18 18:28:21,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/9a2a10cdf/daf740bde9e446c6a5f6615c3c7e7dda [2022-04-18 18:28:21,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:28:21,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:28:21,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:28:21,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:28:21,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:28:21,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:28:21" (1/1) ... [2022-04-18 18:28:21,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa19be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:28:21, skipping insertion in model container [2022-04-18 18:28:21,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:28:21" (1/1) ... [2022-04-18 18:28:21,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:28:21,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:28:21,691 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/popl20-three-array-max.wvr.c[2823,2836] [2022-04-18 18:28:21,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:28:21,702 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:28:21,739 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/popl20-three-array-max.wvr.c[2823,2836] [2022-04-18 18:28:21,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:28:21,765 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:28:21,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:28:21 WrapperNode [2022-04-18 18:28:21,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:28:21,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:28:21,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:28:21,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:28:21,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:28:21" (1/1) ... [2022-04-18 18:28:21,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:28:21" (1/1) ... [2022-04-18 18:28:21,826 INFO L137 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 371 [2022-04-18 18:28:21,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:28:21,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:28:21,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:28:21,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:28:21,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:28:21" (1/1) ... [2022-04-18 18:28:21,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:28:21" (1/1) ... [2022-04-18 18:28:21,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:28:21" (1/1) ... [2022-04-18 18:28:21,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:28:21" (1/1) ... [2022-04-18 18:28:21,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:28:21" (1/1) ... [2022-04-18 18:28:21,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:28:21" (1/1) ... [2022-04-18 18:28:21,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:28:21" (1/1) ... [2022-04-18 18:28:21,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:28:21,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:28:21,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:28:21,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:28:21,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:28:21" (1/1) ... [2022-04-18 18:28:21,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:28:21,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 18:28:21,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 18:28:21,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 18:28:21,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:28:21,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:28:21,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:28:21,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:28:21,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 18:28:21,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 18:28:21,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 18:28:21,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 18:28:21,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-04-18 18:28:21,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-04-18 18:28:21,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:28:21,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 18:28:21,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 18:28:21,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 18:28:21,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:28:21,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:28:21,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:28:21,967 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 18:28:22,066 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:28:22,067 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:28:22,584 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:28:22,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:28:22,750 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-04-18 18:28:22,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:28:22 BoogieIcfgContainer [2022-04-18 18:28:22,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:28:22,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:28:22,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:28:22,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:28:22,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:28:21" (1/3) ... [2022-04-18 18:28:22,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5906bc1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:28:22, skipping insertion in model container [2022-04-18 18:28:22,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:28:21" (2/3) ... [2022-04-18 18:28:22,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5906bc1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:28:22, skipping insertion in model container [2022-04-18 18:28:22,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:28:22" (3/3) ... [2022-04-18 18:28:22,759 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2022-04-18 18:28:22,765 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:28:22,766 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:28:22,766 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2022-04-18 18:28:22,766 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:28:22,845 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 18:28:22,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-04-18 18:28:22,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 18:28:22,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-04-18 18:28:22,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-04-18 18:28:22,948 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread2Thread1of1ForFork0 ======== [2022-04-18 18:28:22,957 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=PARTIAL_ORDER_FA, 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 18:28:22,957 INFO L341 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-04-18 18:28:23,176 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread2Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE, thread2Err2ASSERT_VIOLATIONDATA_RACE, thread2Err3ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-04-18 18:28:23,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:28:23,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2087164056, now seen corresponding path program 1 times [2022-04-18 18:28:23,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 18:28:23,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041329930] [2022-04-18 18:28:23,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:28:23,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:28:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:28:23,388 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 18:28:23,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 18:28:23,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041329930] [2022-04-18 18:28:23,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041329930] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:28:23,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:28:23,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:28:23,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971804446] [2022-04-18 18:28:23,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:28:23,419 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:28:23,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 18:28:23,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:28:23,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:28:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:28:23,440 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 18:28:23,441 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 121.5) internal successors, (243), 2 states have internal predecessors, (243), 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 18:28:23,442 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:28:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:28:23,469 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:28:23,469 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread2Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE, thread2Err2ASSERT_VIOLATIONDATA_RACE, thread2Err3ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-04-18 18:28:23,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:28:23,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1937636867, now seen corresponding path program 1 times [2022-04-18 18:28:23,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 18:28:23,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991665914] [2022-04-18 18:28:23,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:28:23,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:28:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:28:23,595 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 18:28:23,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 18:28:23,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991665914] [2022-04-18 18:28:23,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991665914] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:28:23,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:28:23,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 18:28:23,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614627063] [2022-04-18 18:28:23,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:28:23,598 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:28:23,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 18:28:23,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:28:23,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:28:23,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:28:23,599 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 18:28:23,599 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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 18:28:23,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:28:23,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.