./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.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-lit/qw2004-1.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 3fb83c29fe591f537beeb8acce355ea986d79a29cfcecdcee0a9fb1725d601d1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:21:05,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:21:05,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:21:05,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:21:05,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:21:05,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:21:05,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:21:05,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:21:05,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:21:05,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:21:05,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:21:05,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:21:05,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:21:05,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:21:05,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:21:05,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:21:05,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:21:05,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:21:05,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:21:05,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:21:05,246 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:21:05,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:21:05,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:21:05,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:21:05,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:21:05,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:21:05,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:21:05,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:21:05,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:21:05,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:21:05,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:21:05,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:21:05,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:21:05,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:21:05,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:21:05,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:21:05,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:21:05,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:21:05,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:21:05,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:21:05,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:21:05,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:21:05,267 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:21:05,290 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:21:05,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:21:05,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:21:05,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:21:05,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:21:05,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:21:05,292 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:21:05,292 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:21:05,292 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:21:05,293 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:21:05,293 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:21:05,294 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:21:05,294 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:21:05,294 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:21:05,294 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:21:05,294 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:21:05,295 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:21:05,295 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:21:05,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:21:05,297 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:21:05,297 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:21:05,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:21:05,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:21:05,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:21:05,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:21:05,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:21:05,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:21:05,298 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:21:05,298 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:21:05,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:21:05,299 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:21:05,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:21:05,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:21:05,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:21:05,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:21:05,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:21:05,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:21:05,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:21:05,300 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:21:05,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:21:05,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:21:05,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:21:05,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:21:05,301 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fb83c29fe591f537beeb8acce355ea986d79a29cfcecdcee0a9fb1725d601d1 [2022-04-18 19:21:05,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:21:05,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:21:05,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:21:05,561 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:21:05,561 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:21:05,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i [2022-04-18 19:21:05,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/db96350d0/0a292280624445ac9f38f2eabc176ee6/FLAG08fb12443 [2022-04-18 19:21:06,043 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:21:06,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i [2022-04-18 19:21:06,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/db96350d0/0a292280624445ac9f38f2eabc176ee6/FLAG08fb12443 [2022-04-18 19:21:06,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/db96350d0/0a292280624445ac9f38f2eabc176ee6 [2022-04-18 19:21:06,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:21:06,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:21:06,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:21:06,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:21:06,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:21:06,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:21:06" (1/1) ... [2022-04-18 19:21:06,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e0dab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:06, skipping insertion in model container [2022-04-18 19:21:06,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:21:06" (1/1) ... [2022-04-18 19:21:06,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:21:06,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:21:06,317 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-lit/qw2004-1.i[30003,30016] [2022-04-18 19:21:06,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:21:06,336 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:21:06,360 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-lit/qw2004-1.i[30003,30016] [2022-04-18 19:21:06,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:21:06,394 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:21:06,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:06 WrapperNode [2022-04-18 19:21:06,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:21:06,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:21:06,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:21:06,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:21:06,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:06" (1/1) ... [2022-04-18 19:21:06,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:06" (1/1) ... [2022-04-18 19:21:06,448 INFO L137 Inliner]: procedures = 175, calls = 23, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 158 [2022-04-18 19:21:06,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:21:06,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:21:06,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:21:06,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:21:06,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:06" (1/1) ... [2022-04-18 19:21:06,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:06" (1/1) ... [2022-04-18 19:21:06,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:06" (1/1) ... [2022-04-18 19:21:06,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:06" (1/1) ... [2022-04-18 19:21:06,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:06" (1/1) ... [2022-04-18 19:21:06,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:06" (1/1) ... [2022-04-18 19:21:06,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:06" (1/1) ... [2022-04-18 19:21:06,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:21:06,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:21:06,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:21:06,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:21:06,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:06" (1/1) ... [2022-04-18 19:21:06,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:21:06,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:21:06,501 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 19:21:06,503 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 19:21:06,544 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2022-04-18 19:21:06,544 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2022-04-18 19:21:06,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:21:06,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 19:21:06,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:21:06,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:21:06,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:21:06,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:21:06,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 19:21:06,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:21:06,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:21:06,547 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 19:21:06,663 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:21:06,665 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:21:06,856 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:21:06,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:21:06,898 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-04-18 19:21:06,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:21:06 BoogieIcfgContainer [2022-04-18 19:21:06,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:21:06,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:21:06,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:21:06,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:21:06,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:21:06" (1/3) ... [2022-04-18 19:21:06,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2e1bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:21:06, skipping insertion in model container [2022-04-18 19:21:06,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:06" (2/3) ... [2022-04-18 19:21:06,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2e1bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:21:06, skipping insertion in model container [2022-04-18 19:21:06,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:21:06" (3/3) ... [2022-04-18 19:21:06,906 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2022-04-18 19:21:06,909 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:21:06,910 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:21:06,910 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-04-18 19:21:06,910 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:21:06,936 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:21:06,964 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:21:06,969 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 19:21:06,970 INFO L341 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-04-18 19:21:06,983 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:21:06,994 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 169 transitions, 343 flow [2022-04-18 19:21:06,999 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 169 transitions, 343 flow [2022-04-18 19:21:07,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 167 places, 169 transitions, 343 flow [2022-04-18 19:21:07,064 INFO L129 PetriNetUnfolder]: 6/168 cut-off events. [2022-04-18 19:21:07,065 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:21:07,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 168 events. 6/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 255 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2022-04-18 19:21:07,075 INFO L116 LiptonReduction]: Number of co-enabled transitions 7344 [2022-04-18 19:21:10,045 INFO L131 LiptonReduction]: Checked pairs total: 13853 [2022-04-18 19:21:10,045 INFO L133 LiptonReduction]: Total number of compositions: 204 [2022-04-18 19:21:10,052 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 44 transitions, 93 flow [2022-04-18 19:21:10,081 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 309 states, 234 states have (on average 2.7606837606837606) internal successors, (646), 308 states have internal predecessors, (646), 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 19:21:10,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 309 states, 234 states have (on average 2.7606837606837606) internal successors, (646), 308 states have internal predecessors, (646), 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 19:21:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 19:21:10,088 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:10,088 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 19:21:10,089 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [BCSP_PnpStopErr0ASSERT_VIOLATIONDATA_RACE, BCSP_PnpStopErr1ASSERT_VIOLATIONDATA_RACE, BCSP_PnpStopErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 19:21:10,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:10,092 INFO L85 PathProgramCache]: Analyzing trace with hash 720, now seen corresponding path program 1 times [2022-04-18 19:21:10,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:10,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337536197] [2022-04-18 19:21:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:10,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:10,196 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 19:21:10,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:10,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337536197] [2022-04-18 19:21:10,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337536197] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:10,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:10,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 19:21:10,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456184995] [2022-04-18 19:21:10,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:10,203 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:21:10,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:10,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:21:10,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:21:10,226 INFO L87 Difference]: Start difference. First operand has 309 states, 234 states have (on average 2.7606837606837606) internal successors, (646), 308 states have internal predecessors, (646), 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 19:21:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:10,273 INFO L93 Difference]: Finished difference Result 161 states and 335 transitions. [2022-04-18 19:21:10,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:21:10,275 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 19:21:10,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:10,285 INFO L225 Difference]: With dead ends: 161 [2022-04-18 19:21:10,286 INFO L226 Difference]: Without dead ends: 161 [2022-04-18 19:21:10,287 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 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 19:21:10,290 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:10,292 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:10,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-04-18 19:21:10,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-04-18 19:21:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 147 states have (on average 2.2789115646258504) internal successors, (335), 160 states have internal predecessors, (335), 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 19:21:10,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 335 transitions. [2022-04-18 19:21:10,344 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 335 transitions. Word has length 1 [2022-04-18 19:21:10,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:10,345 INFO L478 AbstractCegarLoop]: Abstraction has 161 states and 335 transitions. [2022-04-18 19:21:10,345 INFO L479 AbstractCegarLoop]: INTERPOLANT 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) [2022-04-18 19:21:10,345 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 335 transitions. [2022-04-18 19:21:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 19:21:10,346 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:10,346 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 19:21:10,346 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:21:10,347 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting BCSP_PnpStopErr0ASSERT_VIOLATIONDATA_RACE === [BCSP_PnpStopErr0ASSERT_VIOLATIONDATA_RACE, BCSP_PnpStopErr1ASSERT_VIOLATIONDATA_RACE, BCSP_PnpStopErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 19:21:10,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:10,349 INFO L85 PathProgramCache]: Analyzing trace with hash 688640309, now seen corresponding path program 1 times [2022-04-18 19:21:10,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:10,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716509177] [2022-04-18 19:21:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:10,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:10,440 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 19:21:10,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:10,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716509177] [2022-04-18 19:21:10,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716509177] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:10,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:10,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:21:10,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609917319] [2022-04-18 19:21:10,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:10,445 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:21:10,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:10,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:21:10,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:10,450 INFO L87 Difference]: Start difference. First operand 161 states and 335 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 19:21:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:10,495 INFO L93 Difference]: Finished difference Result 169 states and 350 transitions. [2022-04-18 19:21:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:21:10,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-04-18 19:21:10,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:10,497 INFO L225 Difference]: With dead ends: 169 [2022-04-18 19:21:10,497 INFO L226 Difference]: Without dead ends: 169 [2022-04-18 19:21:10,498 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 19:21:10,499 INFO L913 BasicCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:10,499 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 17 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-04-18 19:21:10,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-04-18 19:21:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 155 states have (on average 2.2580645161290325) internal successors, (350), 168 states have internal predecessors, (350), 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 19:21:10,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 350 transitions. [2022-04-18 19:21:10,519 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 350 transitions. Word has length 5 [2022-04-18 19:21:10,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:10,519 INFO L478 AbstractCegarLoop]: Abstraction has 169 states and 350 transitions. [2022-04-18 19:21:10,520 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 19:21:10,520 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 350 transitions. [2022-04-18 19:21:10,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 19:21:10,520 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:10,520 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 19:21:10,521 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:21:10,521 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [BCSP_PnpStopErr0ASSERT_VIOLATIONDATA_RACE, BCSP_PnpStopErr1ASSERT_VIOLATIONDATA_RACE, BCSP_PnpStopErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 19:21:10,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash 688761456, now seen corresponding path program 1 times [2022-04-18 19:21:10,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:10,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429505360] [2022-04-18 19:21:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:10,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:10,575 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 19:21:10,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:10,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429505360] [2022-04-18 19:21:10,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429505360] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:10,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:10,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:21:10,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286753203] [2022-04-18 19:21:10,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:10,578 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:21:10,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:10,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:21:10,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:10,579 INFO L87 Difference]: Start difference. First operand 169 states and 350 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 19:21:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:10,621 INFO L93 Difference]: Finished difference Result 259 states and 524 transitions. [2022-04-18 19:21:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:21:10,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-04-18 19:21:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:10,623 INFO L225 Difference]: With dead ends: 259 [2022-04-18 19:21:10,623 INFO L226 Difference]: Without dead ends: 258 [2022-04-18 19:21:10,624 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 19:21:10,626 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:10,626 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 20 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:10,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-04-18 19:21:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 157. [2022-04-18 19:21:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 142 states have (on average 2.26056338028169) internal successors, (321), 156 states have internal predecessors, (321), 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 19:21:10,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 321 transitions. [2022-04-18 19:21:10,635 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 321 transitions. Word has length 5 [2022-04-18 19:21:10,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:10,636 INFO L478 AbstractCegarLoop]: Abstraction has 157 states and 321 transitions. [2022-04-18 19:21:10,636 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 19:21:10,636 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 321 transitions. [2022-04-18 19:21:10,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:21:10,637 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:10,637 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 19:21:10,638 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:21:10,638 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting BCSP_PnpStopErr0ASSERT_VIOLATIONDATA_RACE === [BCSP_PnpStopErr0ASSERT_VIOLATIONDATA_RACE, BCSP_PnpStopErr1ASSERT_VIOLATIONDATA_RACE, BCSP_PnpStopErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 19:21:10,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash -126979135, now seen corresponding path program 1 times [2022-04-18 19:21:10,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:10,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800938796] [2022-04-18 19:21:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:10,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:10,672 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:21:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:10,710 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:21:10,710 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:21:10,711 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location BCSP_PnpStopErr0ASSERT_VIOLATIONDATA_RACE (26 of 27 remaining) [2022-04-18 19:21:10,712 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr0ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2022-04-18 19:21:10,712 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr1ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2022-04-18 19:21:10,712 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr2ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2022-04-18 19:21:10,712 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr3ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2022-04-18 19:21:10,712 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr5ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2022-04-18 19:21:10,712 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr4ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2022-04-18 19:21:10,712 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr6ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2022-04-18 19:21:10,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2022-04-18 19:21:10,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2022-04-18 19:21:10,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2022-04-18 19:21:10,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2022-04-18 19:21:10,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2022-04-18 19:21:10,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2022-04-18 19:21:10,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2022-04-18 19:21:10,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2022-04-18 19:21:10,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2022-04-18 19:21:10,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2022-04-18 19:21:10,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2022-04-18 19:21:10,714 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2022-04-18 19:21:10,714 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 27 remaining) [2022-04-18 19:21:10,714 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr1ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2022-04-18 19:21:10,714 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr2ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2022-04-18 19:21:10,714 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr3ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2022-04-18 19:21:10,714 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr5ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2022-04-18 19:21:10,714 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr4ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2022-04-18 19:21:10,714 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr6ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2022-04-18 19:21:10,714 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 19:21:10,716 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-18 19:21:10,719 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 19:21:10,719 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 19:21:10,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:21:10 BasicIcfg [2022-04-18 19:21:10,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 19:21:10,733 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 19:21:10,733 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 19:21:10,733 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 19:21:10,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:21:06" (3/4) ... [2022-04-18 19:21:10,735 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-04-18 19:21:10,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 19:21:10,735 INFO L158 Benchmark]: Toolchain (without parser) took 4662.34ms. Allocated memory was 88.1MB in the beginning and 136.3MB in the end (delta: 48.2MB). Free memory was 55.5MB in the beginning and 103.6MB in the end (delta: -48.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:21:10,735 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 88.1MB. Free memory was 56.5MB in the beginning and 56.5MB in the end (delta: 23.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:21:10,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.80ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 55.3MB in the beginning and 77.9MB in the end (delta: -22.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-04-18 19:21:10,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.16ms. Allocated memory is still 111.1MB. Free memory was 77.9MB in the beginning and 75.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 19:21:10,736 INFO L158 Benchmark]: Boogie Preprocessor took 24.70ms. Allocated memory is still 111.1MB. Free memory was 75.8MB in the beginning and 74.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 19:21:10,736 INFO L158 Benchmark]: RCFGBuilder took 425.20ms. Allocated memory is still 111.1MB. Free memory was 74.3MB in the beginning and 56.0MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-04-18 19:21:10,736 INFO L158 Benchmark]: TraceAbstraction took 3831.51ms. Allocated memory was 111.1MB in the beginning and 136.3MB in the end (delta: 25.2MB). Free memory was 55.4MB in the beginning and 104.7MB in the end (delta: -49.3MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2022-04-18 19:21:10,736 INFO L158 Benchmark]: Witness Printer took 2.06ms. Allocated memory is still 136.3MB. Free memory was 104.7MB in the beginning and 103.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:21:10,737 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 88.1MB. Free memory was 56.5MB in the beginning and 56.5MB in the end (delta: 23.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.80ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 55.3MB in the beginning and 77.9MB in the end (delta: -22.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.16ms. Allocated memory is still 111.1MB. Free memory was 77.9MB in the beginning and 75.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.70ms. Allocated memory is still 111.1MB. Free memory was 75.8MB in the beginning and 74.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 425.20ms. Allocated memory is still 111.1MB. Free memory was 74.3MB in the beginning and 56.0MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3831.51ms. Allocated memory was 111.1MB in the beginning and 136.3MB in the end (delta: 25.2MB). Free memory was 55.4MB in the beginning and 104.7MB in the end (delta: -49.3MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. * Witness Printer took 2.06ms. Allocated memory is still 136.3MB. Free memory was 104.7MB in the beginning and 103.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 167 PlacesBefore, 44 PlacesAfterwards, 169 TransitionsBefore, 44 TransitionsAfterwards, 7344 CoEnabledTransitionPairs, 8 FixpointIterations, 58 TrivialSequentialCompositions, 122 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 2 ChoiceCompositions, 204 TotalNumberOfCompositions, 13853 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8788, positive: 8488, positive conditional: 0, positive unconditional: 8488, negative: 300, negative conditional: 0, negative unconditional: 300, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5481, positive: 5394, positive conditional: 0, positive unconditional: 5394, negative: 87, negative conditional: 0, negative unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5481, positive: 5291, positive conditional: 0, positive unconditional: 5291, negative: 190, negative conditional: 0, negative unconditional: 190, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 190, positive: 103, positive conditional: 0, positive unconditional: 103, negative: 87, negative conditional: 0, negative unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 194, positive: 57, positive conditional: 0, positive unconditional: 57, negative: 137, negative conditional: 0, negative unconditional: 137, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8788, positive: 3094, positive conditional: 0, positive unconditional: 3094, negative: 213, negative conditional: 0, negative unconditional: 213, unknown: 5481, unknown conditional: 0, unknown unconditional: 5481] , Statistics on independence cache: Total cache size (in pairs): 280, Positive cache size: 253, Positive conditional cache size: 0, Positive unconditional cache size: 253, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 736]: Data race detected Data race detected The following path leads to a data race: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L743] 0 pthread_t t; [L744] 0 pendingIo = 1 [L745] 0 stoppingFlag = 0 [L746] 0 stoppingEvent = 0 [L747] 0 stopped = 0 [L748] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, pthread_create(&t, 0, BCSP_PnpStop, 0)=0, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L736] 1 stoppingFlag = 1 VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1, stoppingFlag = 1=50] [L749] CALL 0 BCSP_PnpAdd(0) [L727] 0 int status; [L728] CALL 0 BCSP_IoIncrement() [L703] 0 \read(stoppingFlag) [L703] 0 \read(stoppingFlag) [L703] COND TRUE 0 \read(stoppingFlag) [L705] 0 return -1; [L728] RET 0 BCSP_IoIncrement() [L736] 1 stoppingFlag = 1 VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1, stoppingFlag = 1=50] Now there is a data race on ~stoppingFlag~0 between C: if (stoppingFlag) { __VERIFIER_atomic_end(); return -1; } else { pendingIo = pendingIo + 1; } [703-708] and C: stoppingFlag = 1 [736] - UnprovableResult [Line: 714]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 745]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 748]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 215 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 133 IncrementalHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 32 mSDtfsCounter, 133 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=309occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 101 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-04-18 19:21:10,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE