./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.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-divine/condvar_spurious_wakeup.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 36c3c3dc239d6629a8ba20aca175d79c45880ab21458cd8ebdaac3a8ef359066 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:57:41,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:57:41,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:57:41,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:57:41,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:57:41,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:57:41,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:57:41,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:57:41,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:57:41,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:57:41,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:57:41,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:57:41,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:57:41,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:57:41,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:57:41,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:57:41,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:57:41,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:57:41,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:57:41,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:57:41,985 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:57:41,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:57:41,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:57:41,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:57:41,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:57:41,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:57:41,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:57:41,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:57:41,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:57:41,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:57:41,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:57:41,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:57:42,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:57:42,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:57:42,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:57:42,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:57:42,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:57:42,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:57:42,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:57:42,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:57:42,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:57:42,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:57:42,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:57:42,035 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:57:42,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:57:42,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:57:42,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:57:42,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:57:42,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:57:42,037 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:57:42,037 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:57:42,038 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:57:42,038 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:57:42,039 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:57:42,039 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:57:42,039 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:57:42,039 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:57:42,039 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:57:42,039 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:57:42,040 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:57:42,041 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:57:42,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:57:42,042 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:57:42,042 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:57:42,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:57:42,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:57:42,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:57:42,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:57:42,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:57:42,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:57:42,043 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:57:42,043 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:57:42,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:57:42,044 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:57:42,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:57:42,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:57:42,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:57:42,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:57:42,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:57:42,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:57:42,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:57:42,045 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:57:42,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:57:42,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:57:42,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:57:42,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:57:42,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36c3c3dc239d6629a8ba20aca175d79c45880ab21458cd8ebdaac3a8ef359066 [2022-04-18 18:57:42,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:57:42,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:57:42,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:57:42,321 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:57:42,323 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:57:42,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2022-04-18 18:57:42,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/896f213fa/9cf274072ba94df193c127beb0a4927e/FLAGef83c19c7 [2022-04-18 18:57:42,866 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:57:42,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2022-04-18 18:57:42,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/896f213fa/9cf274072ba94df193c127beb0a4927e/FLAGef83c19c7 [2022-04-18 18:57:42,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/896f213fa/9cf274072ba94df193c127beb0a4927e [2022-04-18 18:57:42,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:57:42,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:57:42,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:57:42,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:57:42,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:57:42,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:57:42" (1/1) ... [2022-04-18 18:57:42,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9db170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:42, skipping insertion in model container [2022-04-18 18:57:42,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:57:42" (1/1) ... [2022-04-18 18:57:42,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:57:42,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:57:43,112 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-04-18 18:57:43,222 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-divine/condvar_spurious_wakeup.i[30416,30429] [2022-04-18 18:57:43,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:57:43,240 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:57:43,262 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-04-18 18:57:43,289 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-divine/condvar_spurious_wakeup.i[30416,30429] [2022-04-18 18:57:43,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:57:43,342 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:57:43,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:43 WrapperNode [2022-04-18 18:57:43,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:57:43,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:57:43,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:57:43,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:57:43,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:43" (1/1) ... [2022-04-18 18:57:43,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:43" (1/1) ... [2022-04-18 18:57:43,398 INFO L137 Inliner]: procedures = 169, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2022-04-18 18:57:43,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:57:43,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:57:43,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:57:43,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:57:43,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:43" (1/1) ... [2022-04-18 18:57:43,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:43" (1/1) ... [2022-04-18 18:57:43,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:43" (1/1) ... [2022-04-18 18:57:43,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:43" (1/1) ... [2022-04-18 18:57:43,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:43" (1/1) ... [2022-04-18 18:57:43,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:43" (1/1) ... [2022-04-18 18:57:43,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:43" (1/1) ... [2022-04-18 18:57:43,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:57:43,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:57:43,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:57:43,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:57:43,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:43" (1/1) ... [2022-04-18 18:57:43,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:57:43,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:57:43,470 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 18:57:43,482 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 18:57:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:57:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:57:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 18:57:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:57:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:57:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:57:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:57:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-04-18 18:57:43,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-04-18 18:57:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:57:43,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:57:43,524 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 18:57:43,656 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:57:43,657 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:57:43,796 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:57:43,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:57:43,802 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-18 18:57:43,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:57:43 BoogieIcfgContainer [2022-04-18 18:57:43,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:57:43,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:57:43,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:57:43,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:57:43,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:57:42" (1/3) ... [2022-04-18 18:57:43,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c513273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:57:43, skipping insertion in model container [2022-04-18 18:57:43,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:43" (2/3) ... [2022-04-18 18:57:43,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c513273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:57:43, skipping insertion in model container [2022-04-18 18:57:43,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:57:43" (3/3) ... [2022-04-18 18:57:43,811 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2022-04-18 18:57:43,816 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:57:43,816 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:57:43,816 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-04-18 18:57:43,816 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:57:43,877 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 18:57:43,936 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:57:43,941 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 18:57:43,941 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-04-18 18:57:43,956 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:57:43,967 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 87 transitions, 182 flow [2022-04-18 18:57:43,970 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 87 transitions, 182 flow [2022-04-18 18:57:43,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 182 flow [2022-04-18 18:57:44,063 INFO L129 PetriNetUnfolder]: 3/86 cut-off events. [2022-04-18 18:57:44,064 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 18:57:44,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 86 events. 3/86 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2022-04-18 18:57:44,071 INFO L116 LiptonReduction]: Number of co-enabled transitions 660 [2022-04-18 18:57:47,397 INFO L131 LiptonReduction]: Checked pairs total: 1169 [2022-04-18 18:57:47,398 INFO L133 LiptonReduction]: Total number of compositions: 76 [2022-04-18 18:57:47,405 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 16 transitions, 40 flow [2022-04-18 18:57:47,416 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35 states, 30 states have (on average 2.033333333333333) internal successors, (61), 34 states have internal predecessors, (61), 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 18:57:47,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 30 states have (on average 2.033333333333333) internal successors, (61), 34 states have internal predecessors, (61), 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 18:57:47,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 18:57:47,422 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:47,423 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 18:57:47,423 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-04-18 18:57:47,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:47,427 INFO L85 PathProgramCache]: Analyzing trace with hash 9468326, now seen corresponding path program 1 times [2022-04-18 18:57:47,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:47,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974085336] [2022-04-18 18:57:47,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:47,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:47,568 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 18:57:47,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:47,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974085336] [2022-04-18 18:57:47,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974085336] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:57:47,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:57:47,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 18:57:47,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124609151] [2022-04-18 18:57:47,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:57:47,575 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:57:47,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:47,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:57:47,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:57:47,593 INFO L87 Difference]: Start difference. First operand has 35 states, 30 states have (on average 2.033333333333333) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:57:47,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:47,622 INFO L93 Difference]: Finished difference Result 30 states and 52 transitions. [2022-04-18 18:57:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:57:47,624 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-04-18 18:57:47,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:47,630 INFO L225 Difference]: With dead ends: 30 [2022-04-18 18:57:47,630 INFO L226 Difference]: Without dead ends: 30 [2022-04-18 18:57:47,631 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:57:47,636 INFO L913 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:47,637 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:57:47,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-18 18:57:47,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-04-18 18:57:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 29 states have internal predecessors, (52), 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 18:57:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 52 transitions. [2022-04-18 18:57:47,666 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 52 transitions. Word has length 4 [2022-04-18 18:57:47,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:47,666 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 52 transitions. [2022-04-18 18:57:47,667 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:57:47,667 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 52 transitions. [2022-04-18 18:57:47,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 18:57:47,668 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:47,668 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 18:57:47,668 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:57:47,668 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-04-18 18:57:47,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:47,671 INFO L85 PathProgramCache]: Analyzing trace with hash 9468369, now seen corresponding path program 1 times [2022-04-18 18:57:47,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:47,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977015548] [2022-04-18 18:57:47,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:47,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:47,721 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 18:57:47,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:47,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977015548] [2022-04-18 18:57:47,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977015548] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:57:47,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:57:47,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:57:47,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156078032] [2022-04-18 18:57:47,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:57:47,724 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:57:47,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:47,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:57:47,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:57:47,725 INFO L87 Difference]: Start difference. First operand 30 states and 52 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:57:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:47,749 INFO L93 Difference]: Finished difference Result 42 states and 71 transitions. [2022-04-18 18:57:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:57:47,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-04-18 18:57:47,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:47,752 INFO L225 Difference]: With dead ends: 42 [2022-04-18 18:57:47,752 INFO L226 Difference]: Without dead ends: 40 [2022-04-18 18:57:47,752 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 18:57:47,753 INFO L913 BasicCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:47,754 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 2 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:57:47,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-04-18 18:57:47,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2022-04-18 18:57:47,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 31 states have internal predecessors, (56), 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 18:57:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 56 transitions. [2022-04-18 18:57:47,759 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 56 transitions. Word has length 4 [2022-04-18 18:57:47,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:47,760 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 56 transitions. [2022-04-18 18:57:47,760 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:57:47,760 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 56 transitions. [2022-04-18 18:57:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 18:57:47,761 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:47,761 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 18:57:47,761 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 18:57:47,761 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-04-18 18:57:47,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:47,762 INFO L85 PathProgramCache]: Analyzing trace with hash 509076268, now seen corresponding path program 1 times [2022-04-18 18:57:47,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:47,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224206782] [2022-04-18 18:57:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:47,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:47,803 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 18:57:47,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:47,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224206782] [2022-04-18 18:57:47,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224206782] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:57:47,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:57:47,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:57:47,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412534615] [2022-04-18 18:57:47,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:57:47,805 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:57:47,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:47,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:57:47,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:57:47,806 INFO L87 Difference]: Start difference. First operand 32 states and 56 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:57:47,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:47,826 INFO L93 Difference]: Finished difference Result 31 states and 53 transitions. [2022-04-18 18:57:47,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:57:47,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-04-18 18:57:47,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:47,827 INFO L225 Difference]: With dead ends: 31 [2022-04-18 18:57:47,827 INFO L226 Difference]: Without dead ends: 23 [2022-04-18 18:57:47,828 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 18:57:47,829 INFO L913 BasicCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:47,829 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:57:47,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-18 18:57:47,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-18 18:57:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 18:57:47,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2022-04-18 18:57:47,834 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 6 [2022-04-18 18:57:47,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:47,835 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2022-04-18 18:57:47,835 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:57:47,835 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2022-04-18 18:57:47,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-04-18 18:57:47,836 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:47,836 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:57:47,836 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 18:57:47,836 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-04-18 18:57:47,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:47,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1397144805, now seen corresponding path program 1 times [2022-04-18 18:57:47,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:47,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810130307] [2022-04-18 18:57:47,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:47,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:57:47,859 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:57:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:57:47,888 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:57:47,892 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:57:47,893 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 5 remaining) [2022-04-18 18:57:47,895 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2022-04-18 18:57:47,895 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2022-04-18 18:57:47,897 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-04-18 18:57:47,897 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2022-04-18 18:57:47,897 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 18:57:47,899 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-18 18:57:47,905 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 18:57:47,906 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 18:57:47,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 06:57:47 BasicIcfg [2022-04-18 18:57:47,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 18:57:47,937 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 18:57:47,937 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 18:57:47,937 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 18:57:47,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:57:43" (3/4) ... [2022-04-18 18:57:47,940 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-04-18 18:57:47,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 18:57:47,942 INFO L158 Benchmark]: Toolchain (without parser) took 5042.83ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 58.6MB in the beginning and 43.2MB in the end (delta: 15.4MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2022-04-18 18:57:47,942 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 18:57:47,942 INFO L158 Benchmark]: CACSL2BoogieTranslator took 442.51ms. Allocated memory is still 98.6MB. Free memory was 58.4MB in the beginning and 63.8MB in the end (delta: -5.4MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-04-18 18:57:47,943 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.22ms. Allocated memory is still 98.6MB. Free memory was 63.8MB in the beginning and 61.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 18:57:47,943 INFO L158 Benchmark]: Boogie Preprocessor took 33.56ms. Allocated memory is still 98.6MB. Free memory was 61.6MB in the beginning and 60.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 18:57:47,943 INFO L158 Benchmark]: RCFGBuilder took 366.96ms. Allocated memory is still 98.6MB. Free memory was 59.9MB in the beginning and 47.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-04-18 18:57:47,943 INFO L158 Benchmark]: TraceAbstraction took 4130.68ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 47.0MB in the beginning and 44.2MB in the end (delta: 2.8MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2022-04-18 18:57:47,944 INFO L158 Benchmark]: Witness Printer took 3.29ms. Allocated memory is still 119.5MB. Free memory was 44.2MB in the beginning and 43.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 18:57:47,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 442.51ms. Allocated memory is still 98.6MB. Free memory was 58.4MB in the beginning and 63.8MB in the end (delta: -5.4MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.22ms. Allocated memory is still 98.6MB. Free memory was 63.8MB in the beginning and 61.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.56ms. Allocated memory is still 98.6MB. Free memory was 61.6MB in the beginning and 60.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 366.96ms. Allocated memory is still 98.6MB. Free memory was 59.9MB in the beginning and 47.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4130.68ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 47.0MB in the beginning and 44.2MB in the end (delta: 2.8MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. * Witness Printer took 3.29ms. Allocated memory is still 119.5MB. Free memory was 44.2MB in the beginning and 43.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 88 PlacesBefore, 19 PlacesAfterwards, 87 TransitionsBefore, 16 TransitionsAfterwards, 660 CoEnabledTransitionPairs, 7 FixpointIterations, 45 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 76 TotalNumberOfCompositions, 1169 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 852, positive: 760, positive conditional: 0, positive unconditional: 760, negative: 92, negative conditional: 0, negative unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 489, positive: 464, positive conditional: 0, positive unconditional: 464, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 489, positive: 464, positive conditional: 0, positive unconditional: 464, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 43, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 852, positive: 296, positive conditional: 0, positive unconditional: 296, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 489, unknown conditional: 0, unknown unconditional: 489] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - 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: 704]: Data race detected Data race detected The following path leads to a data race: [L697] 0 pthread_mutex_t lock; [L698] 0 pthread_cond_t cond; [L699] 0 int x; [L709] 0 pthread_t t; [L712] FCALL, FORK 0 pthread_create( &t, ((void *)0), thread, ((void *)0) ) VAL [arg={0:0}, cond={4:0}, lock={3:0}, pthread_create( &t, ((void *)0), thread, ((void *)0) )=-1, t={7:0}, x=0] [L713] 0 int i = 0; VAL [arg={0:0}, cond={4:0}, i=0, lock={3:0}, t={7:0}, x=0] [L704] 1 x == 42 VAL [arg={0:0}, arg={0:0}, cond={4:0}, lock={3:0}, x=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=0, lock={3:0}, t={7:0}, x=0, x = i=119] [L704] 1 x == 42 VAL [arg={0:0}, arg={0:0}, cond={4:0}, lock={3:0}, x=0] Now there is a data race on ~x~0 between C: x = i [714] and C: x == 42 [704] - 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: 716]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 712]: 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, 101 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 7 mSDtfsCounter, 61 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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 18:57:48,020 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