./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/34_double_lock_p2_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/34_double_lock_p2_vs.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 92ecee121b9ddff062603596761b7b6e384463e9908bd9593577f02dd4911207 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:17:34,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:17:34,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:17:34,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:17:34,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:17:34,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:17:34,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:17:34,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:17:34,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:17:34,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:17:34,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:17:34,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:17:34,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:17:34,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:17:34,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:17:34,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:17:34,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:17:34,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:17:34,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:17:34,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:17:34,806 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:17:34,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:17:34,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:17:34,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:17:34,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:17:34,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:17:34,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:17:34,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:17:34,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:17:34,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:17:34,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:17:34,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:17:34,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:17:34,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:17:34,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:17:34,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:17:34,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:17:34,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:17:34,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:17:34,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:17:34,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:17:34,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:17:34,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:17:34,856 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:17:34,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:17:34,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:17:34,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:17:34,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:17:34,858 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:17:34,858 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:17:34,858 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:17:34,859 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:17:34,860 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:17:34,860 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:17:34,860 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:17:34,860 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:17:34,860 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:17:34,861 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:17:34,861 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:17:34,861 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:17:34,861 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:17:34,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:17:34,862 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:17:34,863 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:17:34,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:17:34,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:17:34,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:17:34,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:17:34,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:17:34,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:17:34,864 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:17:34,864 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:17:34,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:17:34,865 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:17:34,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:17:34,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:17:34,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:17:34,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:17:34,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:17:34,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:17:34,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:17:34,866 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:17:34,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:17:34,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:17:34,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:17:34,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:17:34,867 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92ecee121b9ddff062603596761b7b6e384463e9908bd9593577f02dd4911207 [2022-04-18 19:17:35,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:17:35,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:17:35,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:17:35,134 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:17:35,134 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:17:35,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/34_double_lock_p2_vs.i [2022-04-18 19:17:35,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/287ad0740/bdeae009d5084f199c79f54ca3dfc4be/FLAGd89c58f56 [2022-04-18 19:17:35,637 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:17:35,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/34_double_lock_p2_vs.i [2022-04-18 19:17:35,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/287ad0740/bdeae009d5084f199c79f54ca3dfc4be/FLAGd89c58f56 [2022-04-18 19:17:35,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/287ad0740/bdeae009d5084f199c79f54ca3dfc4be [2022-04-18 19:17:35,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:17:35,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:17:35,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:17:35,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:17:35,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:17:35,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:17:35" (1/1) ... [2022-04-18 19:17:35,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409369c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:35, skipping insertion in model container [2022-04-18 19:17:35,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:17:35" (1/1) ... [2022-04-18 19:17:35,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:17:35,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:17:36,064 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/34_double_lock_p2_vs.i[30847,30860] [2022-04-18 19:17:36,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:17:36,076 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:17:36,118 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/34_double_lock_p2_vs.i[30847,30860] [2022-04-18 19:17:36,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:17:36,150 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:17:36,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:36 WrapperNode [2022-04-18 19:17:36,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:17:36,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:17:36,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:17:36,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:17:36,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:36" (1/1) ... [2022-04-18 19:17:36,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:36" (1/1) ... [2022-04-18 19:17:36,200 INFO L137 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 281 [2022-04-18 19:17:36,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:17:36,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:17:36,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:17:36,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:17:36,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:36" (1/1) ... [2022-04-18 19:17:36,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:36" (1/1) ... [2022-04-18 19:17:36,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:36" (1/1) ... [2022-04-18 19:17:36,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:36" (1/1) ... [2022-04-18 19:17:36,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:36" (1/1) ... [2022-04-18 19:17:36,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:36" (1/1) ... [2022-04-18 19:17:36,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:36" (1/1) ... [2022-04-18 19:17:36,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:17:36,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:17:36,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:17:36,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:17:36,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:36" (1/1) ... [2022-04-18 19:17:36,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:17:36,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:17:36,284 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 19:17:36,286 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 19:17:36,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 19:17:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-04-18 19:17:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-04-18 19:17:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 19:17:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 19:17:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:17:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:17:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:17:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:17:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:17:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:17:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:17:36,311 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 19:17:36,398 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:17:36,399 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:17:36,903 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:17:37,196 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:17:37,197 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-18 19:17:37,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:17:37 BoogieIcfgContainer [2022-04-18 19:17:37,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:17:37,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:17:37,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:17:37,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:17:37,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:17:35" (1/3) ... [2022-04-18 19:17:37,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc15e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:17:37, skipping insertion in model container [2022-04-18 19:17:37,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:36" (2/3) ... [2022-04-18 19:17:37,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc15e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:17:37, skipping insertion in model container [2022-04-18 19:17:37,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:17:37" (3/3) ... [2022-04-18 19:17:37,206 INFO L111 eAbstractionObserver]: Analyzing ICFG 34_double_lock_p2_vs.i [2022-04-18 19:17:37,210 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:17:37,211 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:17:37,212 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-04-18 19:17:37,212 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:17:37,275 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:17:37,321 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:17:37,329 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 19:17:37,330 INFO L341 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2022-04-18 19:17:37,343 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:17:37,353 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 108 transitions, 226 flow [2022-04-18 19:17:37,356 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 108 transitions, 226 flow [2022-04-18 19:17:37,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 108 transitions, 226 flow [2022-04-18 19:17:37,411 INFO L129 PetriNetUnfolder]: 7/118 cut-off events. [2022-04-18 19:17:37,411 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:17:37,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 318 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2022-04-18 19:17:37,421 INFO L116 LiptonReduction]: Number of co-enabled transitions 4188 [2022-04-18 19:20:04,709 INFO L131 LiptonReduction]: Checked pairs total: 15101 [2022-04-18 19:20:04,709 INFO L133 LiptonReduction]: Total number of compositions: 135 [2022-04-18 19:20:04,715 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 54 transitions, 118 flow [2022-04-18 19:20:04,838 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2480 states, 2095 states have (on average 3.341288782816229) internal successors, (7000), 2479 states have internal predecessors, (7000), 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 19:20:04,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 2480 states, 2095 states have (on average 3.341288782816229) internal successors, (7000), 2479 states have internal predecessors, (7000), 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 19:20:04,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:20:04,848 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:20:04,848 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:20:04,849 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err9ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-04-18 19:20:04,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:20:04,853 INFO L85 PathProgramCache]: Analyzing trace with hash 32719511, now seen corresponding path program 1 times [2022-04-18 19:20:04,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:20:04,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802791169] [2022-04-18 19:20:04,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:20:04,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:20:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:20:05,022 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 19:20:05,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:20:05,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802791169] [2022-04-18 19:20:05,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802791169] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:20:05,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:20:05,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:20:05,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046456576] [2022-04-18 19:20:05,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:20:05,029 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:20:05,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:20:05,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:20:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:20:05,058 INFO L87 Difference]: Start difference. First operand has 2480 states, 2095 states have (on average 3.341288782816229) internal successors, (7000), 2479 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:20:05,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:20:05,320 INFO L93 Difference]: Finished difference Result 387 states and 1036 transitions. [2022-04-18 19:20:05,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:20:05,325 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-04-18 19:20:05,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:20:05,338 INFO L225 Difference]: With dead ends: 387 [2022-04-18 19:20:05,339 INFO L226 Difference]: Without dead ends: 387 [2022-04-18 19:20:05,345 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:20:05,347 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-18 19:20:05,348 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-18 19:20:05,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-04-18 19:20:05,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2022-04-18 19:20:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 385 states have (on average 2.690909090909091) internal successors, (1036), 386 states have internal predecessors, (1036), 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 19:20:05,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1036 transitions. [2022-04-18 19:20:05,415 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1036 transitions. Word has length 4 [2022-04-18 19:20:05,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:20:05,416 INFO L478 AbstractCegarLoop]: Abstraction has 387 states and 1036 transitions. [2022-04-18 19:20:05,416 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:20:05,416 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1036 transitions. [2022-04-18 19:20:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 19:20:05,416 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:20:05,417 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 19:20:05,417 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:20:05,417 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err9ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-04-18 19:20:05,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:20:05,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1014304457, now seen corresponding path program 1 times [2022-04-18 19:20:05,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:20:05,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049262479] [2022-04-18 19:20:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:20:05,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:20:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:20:05,503 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 19:20:05,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:20:05,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049262479] [2022-04-18 19:20:05,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049262479] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:20:05,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:20:05,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:20:05,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859523961] [2022-04-18 19:20:05,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:20:05,505 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:20:05,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:20:05,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:20:05,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:20:05,506 INFO L87 Difference]: Start difference. First operand 387 states and 1036 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 19:20:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:20:05,864 INFO L93 Difference]: Finished difference Result 532 states and 1401 transitions. [2022-04-18 19:20:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:20:05,865 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 19:20:05,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:20:05,869 INFO L225 Difference]: With dead ends: 532 [2022-04-18 19:20:05,869 INFO L226 Difference]: Without dead ends: 532 [2022-04-18 19:20:05,869 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 19:20:05,870 INFO L913 BasicCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-18 19:20:05,871 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 11 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-18 19:20:05,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-04-18 19:20:05,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 397. [2022-04-18 19:20:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 395 states have (on average 2.6632911392405063) internal successors, (1052), 396 states have internal predecessors, (1052), 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 19:20:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1052 transitions. [2022-04-18 19:20:05,893 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1052 transitions. Word has length 5 [2022-04-18 19:20:05,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:20:05,893 INFO L478 AbstractCegarLoop]: Abstraction has 397 states and 1052 transitions. [2022-04-18 19:20:05,893 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 19:20:05,894 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1052 transitions. [2022-04-18 19:20:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 19:20:05,894 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:20:05,894 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-04-18 19:20:05,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:20:05,895 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err9ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-04-18 19:20:05,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:20:05,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1026141621, now seen corresponding path program 1 times [2022-04-18 19:20:05,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:20:05,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859017313] [2022-04-18 19:20:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:20:05,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:20:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:20:05,917 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:20:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:20:05,947 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:20:05,947 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:20:05,948 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (53 of 54 remaining) [2022-04-18 19:20:05,949 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (52 of 54 remaining) [2022-04-18 19:20:05,950 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (51 of 54 remaining) [2022-04-18 19:20:05,950 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (50 of 54 remaining) [2022-04-18 19:20:05,950 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (49 of 54 remaining) [2022-04-18 19:20:05,950 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (48 of 54 remaining) [2022-04-18 19:20:05,951 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (47 of 54 remaining) [2022-04-18 19:20:05,951 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (46 of 54 remaining) [2022-04-18 19:20:05,951 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (45 of 54 remaining) [2022-04-18 19:20:05,951 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (44 of 54 remaining) [2022-04-18 19:20:05,952 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (43 of 54 remaining) [2022-04-18 19:20:05,952 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (42 of 54 remaining) [2022-04-18 19:20:05,952 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (41 of 54 remaining) [2022-04-18 19:20:05,952 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (40 of 54 remaining) [2022-04-18 19:20:05,952 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (39 of 54 remaining) [2022-04-18 19:20:05,953 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (38 of 54 remaining) [2022-04-18 19:20:05,953 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (37 of 54 remaining) [2022-04-18 19:20:05,953 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (36 of 54 remaining) [2022-04-18 19:20:05,953 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (35 of 54 remaining) [2022-04-18 19:20:05,954 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (34 of 54 remaining) [2022-04-18 19:20:05,954 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (33 of 54 remaining) [2022-04-18 19:20:05,954 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (32 of 54 remaining) [2022-04-18 19:20:05,954 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (31 of 54 remaining) [2022-04-18 19:20:05,954 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (30 of 54 remaining) [2022-04-18 19:20:05,955 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (29 of 54 remaining) [2022-04-18 19:20:05,955 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (28 of 54 remaining) [2022-04-18 19:20:05,955 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (27 of 54 remaining) [2022-04-18 19:20:05,955 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 54 remaining) [2022-04-18 19:20:05,955 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (25 of 54 remaining) [2022-04-18 19:20:05,956 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (24 of 54 remaining) [2022-04-18 19:20:05,956 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (23 of 54 remaining) [2022-04-18 19:20:05,956 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (22 of 54 remaining) [2022-04-18 19:20:05,956 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (21 of 54 remaining) [2022-04-18 19:20:05,957 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (20 of 54 remaining) [2022-04-18 19:20:05,957 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (19 of 54 remaining) [2022-04-18 19:20:05,957 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (18 of 54 remaining) [2022-04-18 19:20:05,957 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (17 of 54 remaining) [2022-04-18 19:20:05,958 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (16 of 54 remaining) [2022-04-18 19:20:05,958 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (15 of 54 remaining) [2022-04-18 19:20:05,958 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (14 of 54 remaining) [2022-04-18 19:20:05,958 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (13 of 54 remaining) [2022-04-18 19:20:05,958 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (12 of 54 remaining) [2022-04-18 19:20:05,959 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (11 of 54 remaining) [2022-04-18 19:20:05,959 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (10 of 54 remaining) [2022-04-18 19:20:05,959 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 54 remaining) [2022-04-18 19:20:05,959 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 54 remaining) [2022-04-18 19:20:05,959 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 54 remaining) [2022-04-18 19:20:05,960 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 54 remaining) [2022-04-18 19:20:05,960 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 54 remaining) [2022-04-18 19:20:05,960 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 54 remaining) [2022-04-18 19:20:05,960 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 54 remaining) [2022-04-18 19:20:05,961 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (2 of 54 remaining) [2022-04-18 19:20:05,961 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (1 of 54 remaining) [2022-04-18 19:20:05,961 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (0 of 54 remaining) [2022-04-18 19:20:05,961 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:20:05,963 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 19:20:05,964 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:20:05,965 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:20:06,008 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:20:06,010 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:20:06,010 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 19:20:06,011 INFO L341 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-04-18 19:20:06,013 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:20:06,013 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 176 transitions, 376 flow [2022-04-18 19:20:06,013 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 176 transitions, 376 flow [2022-04-18 19:20:06,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 175 places, 176 transitions, 376 flow [2022-04-18 19:20:06,071 INFO L129 PetriNetUnfolder]: 9/168 cut-off events. [2022-04-18 19:20:06,071 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:20:06,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 168 events. 9/168 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 561 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 177. Up to 6 conditions per place. [2022-04-18 19:20:06,082 INFO L116 LiptonReduction]: Number of co-enabled transitions 10080 [2022-04-18 19:21:56,144 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-04-18 19:21:56,144 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 101 [2022-04-18 19:21:56,145 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.checkImplication(TransFormulaUtils.java:1154) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.independencerelation.SemanticIndependenceRelation.performInclusionCheck(SemanticIndependenceRelation.java:197) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.independencerelation.SemanticIndependenceRelation.containsLBool(SemanticIndependenceRelation.java:145) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.independencerelation.SemanticIndependenceRelation.contains(SemanticIndependenceRelation.java:123) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.independencerelation.SemanticIndependenceRelation.contains(SemanticIndependenceRelation.java:1) at de.uni_freiburg.informatik.ultimate.automata.partialorder.UnionIndependenceRelation.lambda$2(UnionIndependenceRelation.java:70) at java.base/java.util.stream.MatchOps$1MatchSink.accept(MatchOps.java:90) at java.base/java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:958) at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:127) at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:502) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:488) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:230) at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:196) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.anyMatch(ReferencePipeline.java:528) at de.uni_freiburg.informatik.ultimate.automata.partialorder.UnionIndependenceRelation.contains(UnionIndependenceRelation.java:70) at de.uni_freiburg.informatik.ultimate.automata.partialorder.CachedIndependenceRelation.contains(CachedIndependenceRelation.java:120) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.lambda$1(LiptonReduction.java:465) at java.base/java.util.stream.MatchOps$1MatchSink.accept(MatchOps.java:90) at java.base/java.util.HashMap$KeySpliterator.tryAdvance(HashMap.java:1624) at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:127) at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:502) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:488) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:230) at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:196) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.allMatch(ReferencePipeline.java:533) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.isRightMover(LiptonReduction.java:465) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.sequenceRuleCheck(LiptonReduction.java:408) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.sequenceRule(LiptonReduction.java:278) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.(LiptonReduction.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.petrinetlbe.PetriNetLargeBlockEncoding.(PetriNetLargeBlockEncoding.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.getInitialAbstraction(BasicCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.computeInitialAbstraction(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:411) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:301) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 60 more [2022-04-18 19:21:56,148 INFO L158 Benchmark]: Toolchain (without parser) took 260486.15ms. Allocated memory was 86.0MB in the beginning and 163.6MB in the end (delta: 77.6MB). Free memory was 48.9MB in the beginning and 83.8MB in the end (delta: -34.9MB). Peak memory consumption was 111.6MB. Max. memory is 16.1GB. [2022-04-18 19:21:56,148 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 86.0MB. Free memory was 54.9MB in the beginning and 54.9MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:21:56,148 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.86ms. Allocated memory was 86.0MB in the beginning and 123.7MB in the end (delta: 37.7MB). Free memory was 48.7MB in the beginning and 88.3MB in the end (delta: -39.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-04-18 19:21:56,149 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.32ms. Allocated memory is still 123.7MB. Free memory was 88.3MB in the beginning and 84.7MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-04-18 19:21:56,149 INFO L158 Benchmark]: Boogie Preprocessor took 43.73ms. Allocated memory is still 123.7MB. Free memory was 84.7MB in the beginning and 82.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 19:21:56,150 INFO L158 Benchmark]: RCFGBuilder took 948.16ms. Allocated memory is still 123.7MB. Free memory was 81.3MB in the beginning and 81.7MB in the end (delta: -376.2kB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. [2022-04-18 19:21:56,150 INFO L158 Benchmark]: TraceAbstraction took 258946.76ms. Allocated memory was 123.7MB in the beginning and 163.6MB in the end (delta: 39.8MB). Free memory was 80.9MB in the beginning and 83.8MB in the end (delta: -2.8MB). Peak memory consumption was 108.2MB. Max. memory is 16.1GB. [2022-04-18 19:21:56,154 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 86.0MB. Free memory was 54.9MB in the beginning and 54.9MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 483.86ms. Allocated memory was 86.0MB in the beginning and 123.7MB in the end (delta: 37.7MB). Free memory was 48.7MB in the beginning and 88.3MB in the end (delta: -39.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.32ms. Allocated memory is still 123.7MB. Free memory was 88.3MB in the beginning and 84.7MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.73ms. Allocated memory is still 123.7MB. Free memory was 84.7MB in the beginning and 82.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 948.16ms. Allocated memory is still 123.7MB. Free memory was 81.3MB in the beginning and 81.7MB in the end (delta: -376.2kB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. * TraceAbstraction took 258946.76ms. Allocated memory was 123.7MB in the beginning and 163.6MB in the end (delta: 39.8MB). Free memory was 80.9MB in the beginning and 83.8MB in the end (delta: -2.8MB). Peak memory consumption was 108.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 147.4s, 108 PlacesBefore, 57 PlacesAfterwards, 108 TransitionsBefore, 54 TransitionsAfterwards, 4188 CoEnabledTransitionPairs, 8 FixpointIterations, 22 TrivialSequentialCompositions, 98 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 135 TotalNumberOfCompositions, 15101 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8215, positive: 7915, positive conditional: 0, positive unconditional: 7915, 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: 3475, positive: 3419, positive conditional: 0, positive unconditional: 3419, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3475, positive: 2648, positive conditional: 0, positive unconditional: 2648, negative: 827, negative conditional: 0, negative unconditional: 827, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 827, positive: 771, positive conditional: 0, positive unconditional: 771, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 29, unknown conditional: 0, unknown unconditional: 29] , SemanticIndependenceRelation.Query Time [ms]: [ total: 134519, positive: 1323, positive conditional: 0, positive unconditional: 1323, negative: 1793, negative conditional: 0, negative unconditional: 1793, unknown: 131403, unknown conditional: 0, unknown unconditional: 131403] ], Cache Queries: [ total: 8215, positive: 4496, positive conditional: 0, positive unconditional: 4496, negative: 244, negative conditional: 0, negative unconditional: 244, unknown: 3475, unknown conditional: 0, unknown unconditional: 3475] , Statistics on independence cache: Total cache size (in pairs): 430, Positive cache size: 402, Positive conditional cache size: 0, Positive unconditional cache size: 402, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28 - 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 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/34_double_lock_p2_vs.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Bitvector.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 92ecee121b9ddff062603596761b7b6e384463e9908bd9593577f02dd4911207 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:21:57,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:21:57,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:21:57,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:21:57,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:21:57,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:21:57,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:21:57,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:21:57,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:21:57,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:21:57,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:21:57,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:21:57,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:21:57,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:21:57,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:21:57,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:21:57,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:21:57,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:21:57,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:21:57,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:21:57,829 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:21:57,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:21:57,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:21:57,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:21:57,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:21:57,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:21:57,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:21:57,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:21:57,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:21:57,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:21:57,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:21:57,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:21:57,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:21:57,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:21:57,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:21:57,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:21:57,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:21:57,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:21:57,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:21:57,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:21:57,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:21:57,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:21:57,857 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Bitvector.epf [2022-04-18 19:21:57,890 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:21:57,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:21:57,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:21:57,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:21:57,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:21:57,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:21:57,892 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:21:57,892 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:21:57,892 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:21:57,893 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:21:57,893 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:21:57,893 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:21:57,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:21:57,894 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:21:57,894 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:21:57,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:21:57,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:21:57,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:21:57,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:21:57,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:21:57,896 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:21:57,896 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-04-18 19:21:57,896 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-04-18 19:21:57,896 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:21:57,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:21:57,896 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:21:57,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:21:57,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:21:57,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 19:21:57,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:21:57,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:21:57,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:21:57,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:21:57,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:21:57,898 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-04-18 19:21:57,899 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-04-18 19:21:57,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:21:57,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:21:57,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:21:57,899 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92ecee121b9ddff062603596761b7b6e384463e9908bd9593577f02dd4911207 [2022-04-18 19:21:58,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:21:58,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:21:58,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:21:58,255 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:21:58,256 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:21:58,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/34_double_lock_p2_vs.i [2022-04-18 19:21:58,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/89f65e9e1/ffd9fa7b6a034e82b5ccdca4872848d2/FLAG2dbb89d55 [2022-04-18 19:21:58,814 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:21:58,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/34_double_lock_p2_vs.i [2022-04-18 19:21:58,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/89f65e9e1/ffd9fa7b6a034e82b5ccdca4872848d2/FLAG2dbb89d55 [2022-04-18 19:21:59,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/89f65e9e1/ffd9fa7b6a034e82b5ccdca4872848d2 [2022-04-18 19:21:59,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:21:59,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:21:59,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:21:59,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:21:59,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:21:59,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:21:59" (1/1) ... [2022-04-18 19:21:59,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c0b444c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:59, skipping insertion in model container [2022-04-18 19:21:59,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:21:59" (1/1) ... [2022-04-18 19:21:59,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:21:59,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:21:59,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/34_double_lock_p2_vs.i[30847,30860] [2022-04-18 19:21:59,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:21:59,679 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:21:59,734 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/34_double_lock_p2_vs.i[30847,30860] [2022-04-18 19:21:59,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:21:59,777 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:21:59,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:59 WrapperNode [2022-04-18 19:21:59,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:21:59,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:21:59,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:21:59,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:21:59,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:59" (1/1) ... [2022-04-18 19:21:59,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:59" (1/1) ... [2022-04-18 19:21:59,861 INFO L137 Inliner]: procedures = 179, calls = 36, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 281 [2022-04-18 19:21:59,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:21:59,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:21:59,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:21:59,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:21:59,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:59" (1/1) ... [2022-04-18 19:21:59,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:59" (1/1) ... [2022-04-18 19:21:59,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:59" (1/1) ... [2022-04-18 19:21:59,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:59" (1/1) ... [2022-04-18 19:21:59,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:59" (1/1) ... [2022-04-18 19:21:59,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:59" (1/1) ... [2022-04-18 19:21:59,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:59" (1/1) ... [2022-04-18 19:21:59,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:21:59,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:21:59,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:21:59,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:21:59,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:59" (1/1) ... [2022-04-18 19:21:59,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:21:59,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:21:59,980 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 19:21:59,992 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 19:22:00,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-04-18 19:22:00,028 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-04-18 19:22:00,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-04-18 19:22:00,028 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 19:22:00,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 19:22:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:22:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:22:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:22:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-04-18 19:22:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-04-18 19:22:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-04-18 19:22:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:22:00,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:22:00,031 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 19:22:00,186 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:22:00,187 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:22:00,781 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:22:01,116 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:22:01,116 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-18 19:22:01,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:22:01 BoogieIcfgContainer [2022-04-18 19:22:01,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:22:01,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:22:01,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:22:01,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:22:01,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:21:59" (1/3) ... [2022-04-18 19:22:01,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3441952d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:22:01, skipping insertion in model container [2022-04-18 19:22:01,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:59" (2/3) ... [2022-04-18 19:22:01,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3441952d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:22:01, skipping insertion in model container [2022-04-18 19:22:01,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:22:01" (3/3) ... [2022-04-18 19:22:01,129 INFO L111 eAbstractionObserver]: Analyzing ICFG 34_double_lock_p2_vs.i [2022-04-18 19:22:01,133 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:22:01,134 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:22:01,134 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-04-18 19:22:01,134 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:22:01,216 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:22:01,257 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:22:01,263 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 19:22:01,263 INFO L341 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2022-04-18 19:22:01,272 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:22:01,304 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 108 transitions, 226 flow [2022-04-18 19:22:01,307 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 108 transitions, 226 flow [2022-04-18 19:22:01,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 108 transitions, 226 flow [2022-04-18 19:22:01,371 INFO L129 PetriNetUnfolder]: 7/118 cut-off events. [2022-04-18 19:22:01,372 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:22:01,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 327 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 96. Up to 4 conditions per place. [2022-04-18 19:22:01,381 INFO L116 LiptonReduction]: Number of co-enabled transitions 4100 [2022-04-18 19:23:03,104 INFO L131 LiptonReduction]: Checked pairs total: 15089 [2022-04-18 19:23:03,105 INFO L133 LiptonReduction]: Total number of compositions: 125 [2022-04-18 19:23:03,111 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 54 transitions, 118 flow [2022-04-18 19:23:03,239 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2480 states, 2095 states have (on average 3.341288782816229) internal successors, (7000), 2479 states have internal predecessors, (7000), 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 19:23:03,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 2480 states, 2095 states have (on average 3.341288782816229) internal successors, (7000), 2479 states have internal predecessors, (7000), 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 19:23:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:23:03,254 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:23:03,255 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:23:03,255 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err9ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-04-18 19:23:03,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:23:03,265 INFO L85 PathProgramCache]: Analyzing trace with hash 32480117, now seen corresponding path program 1 times [2022-04-18 19:23:03,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:23:03,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127628681] [2022-04-18 19:23:03,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:23:03,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:23:03,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:23:03,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:23:03,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-04-18 19:23:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:23:03,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-18 19:23:03,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:23:03,430 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 19:23:03,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 19:23:03,431 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 19:23:03,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127628681] [2022-04-18 19:23:03,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127628681] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:23:03,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:23:03,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:23:03,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484775044] [2022-04-18 19:23:03,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:23:03,437 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:23:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 19:23:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:23:03,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:23:03,481 INFO L87 Difference]: Start difference. First operand has 2480 states, 2095 states have (on average 3.341288782816229) internal successors, (7000), 2479 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:23:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:23:03,710 INFO L93 Difference]: Finished difference Result 387 states and 1036 transitions. [2022-04-18 19:23:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:23:03,713 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-04-18 19:23:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:23:03,723 INFO L225 Difference]: With dead ends: 387 [2022-04-18 19:23:03,723 INFO L226 Difference]: Without dead ends: 387 [2022-04-18 19:23:03,724 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 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 19:23:03,727 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-18 19:23:03,728 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-18 19:23:03,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-04-18 19:23:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2022-04-18 19:23:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 385 states have (on average 2.690909090909091) internal successors, (1036), 386 states have internal predecessors, (1036), 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 19:23:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1036 transitions. [2022-04-18 19:23:03,795 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1036 transitions. Word has length 4 [2022-04-18 19:23:03,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:23:03,797 INFO L478 AbstractCegarLoop]: Abstraction has 387 states and 1036 transitions. [2022-04-18 19:23:03,797 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:23:03,797 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1036 transitions. [2022-04-18 19:23:03,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 19:23:03,798 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:23:03,798 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 19:23:03,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-04-18 19:23:04,007 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:23:04,008 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err9ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-04-18 19:23:04,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:23:04,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1006885567, now seen corresponding path program 1 times [2022-04-18 19:23:04,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:23:04,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301475366] [2022-04-18 19:23:04,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:23:04,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:23:04,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:23:04,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:23:04,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-04-18 19:23:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:23:04,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-18 19:23:04,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:23:04,117 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 19:23:04,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 19:23:04,118 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 19:23:04,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301475366] [2022-04-18 19:23:04,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301475366] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:23:04,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:23:04,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:23:04,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145461071] [2022-04-18 19:23:04,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:23:04,120 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:23:04,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 19:23:04,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:23:04,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:23:04,121 INFO L87 Difference]: Start difference. First operand 387 states and 1036 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 19:23:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:23:04,469 INFO L93 Difference]: Finished difference Result 532 states and 1401 transitions. [2022-04-18 19:23:04,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:23:04,471 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 19:23:04,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:23:04,475 INFO L225 Difference]: With dead ends: 532 [2022-04-18 19:23:04,475 INFO L226 Difference]: Without dead ends: 532 [2022-04-18 19:23:04,475 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 19:23:04,476 INFO L913 BasicCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-18 19:23:04,477 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 11 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-18 19:23:04,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-04-18 19:23:04,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 397. [2022-04-18 19:23:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 395 states have (on average 2.6632911392405063) internal successors, (1052), 396 states have internal predecessors, (1052), 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 19:23:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1052 transitions. [2022-04-18 19:23:04,511 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1052 transitions. Word has length 5 [2022-04-18 19:23:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:23:04,532 INFO L478 AbstractCegarLoop]: Abstraction has 397 states and 1052 transitions. [2022-04-18 19:23:04,532 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 19:23:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1052 transitions. [2022-04-18 19:23:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 19:23:04,533 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:23:04,533 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-04-18 19:23:04,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-04-18 19:23:04,743 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:23:04,743 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err9ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-04-18 19:23:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:23:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1329266176, now seen corresponding path program 1 times [2022-04-18 19:23:04,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:23:04,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108906075] [2022-04-18 19:23:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:23:04,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:23:04,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:23:04,745 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:23:04,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-04-18 19:23:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:23:04,819 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:23:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:23:04,864 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-04-18 19:23:04,864 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:23:04,865 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (53 of 54 remaining) [2022-04-18 19:23:04,867 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (52 of 54 remaining) [2022-04-18 19:23:04,867 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (51 of 54 remaining) [2022-04-18 19:23:04,867 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (50 of 54 remaining) [2022-04-18 19:23:04,867 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (49 of 54 remaining) [2022-04-18 19:23:04,867 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (48 of 54 remaining) [2022-04-18 19:23:04,868 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (47 of 54 remaining) [2022-04-18 19:23:04,868 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (46 of 54 remaining) [2022-04-18 19:23:04,868 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (45 of 54 remaining) [2022-04-18 19:23:04,868 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (44 of 54 remaining) [2022-04-18 19:23:04,868 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (43 of 54 remaining) [2022-04-18 19:23:04,869 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (42 of 54 remaining) [2022-04-18 19:23:04,869 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (41 of 54 remaining) [2022-04-18 19:23:04,869 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (40 of 54 remaining) [2022-04-18 19:23:04,869 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (39 of 54 remaining) [2022-04-18 19:23:04,869 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (38 of 54 remaining) [2022-04-18 19:23:04,870 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (37 of 54 remaining) [2022-04-18 19:23:04,870 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (36 of 54 remaining) [2022-04-18 19:23:04,870 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (35 of 54 remaining) [2022-04-18 19:23:04,870 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (34 of 54 remaining) [2022-04-18 19:23:04,870 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (33 of 54 remaining) [2022-04-18 19:23:04,871 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (32 of 54 remaining) [2022-04-18 19:23:04,871 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (31 of 54 remaining) [2022-04-18 19:23:04,871 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (30 of 54 remaining) [2022-04-18 19:23:04,871 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (29 of 54 remaining) [2022-04-18 19:23:04,871 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (28 of 54 remaining) [2022-04-18 19:23:04,872 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (27 of 54 remaining) [2022-04-18 19:23:04,872 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 54 remaining) [2022-04-18 19:23:04,872 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (25 of 54 remaining) [2022-04-18 19:23:04,872 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (24 of 54 remaining) [2022-04-18 19:23:04,872 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (23 of 54 remaining) [2022-04-18 19:23:04,873 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (22 of 54 remaining) [2022-04-18 19:23:04,873 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (21 of 54 remaining) [2022-04-18 19:23:04,873 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (20 of 54 remaining) [2022-04-18 19:23:04,873 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (19 of 54 remaining) [2022-04-18 19:23:04,873 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (18 of 54 remaining) [2022-04-18 19:23:04,874 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (17 of 54 remaining) [2022-04-18 19:23:04,874 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (16 of 54 remaining) [2022-04-18 19:23:04,874 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (15 of 54 remaining) [2022-04-18 19:23:04,874 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (14 of 54 remaining) [2022-04-18 19:23:04,874 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (13 of 54 remaining) [2022-04-18 19:23:04,874 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (12 of 54 remaining) [2022-04-18 19:23:04,875 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (11 of 54 remaining) [2022-04-18 19:23:04,875 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (10 of 54 remaining) [2022-04-18 19:23:04,875 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 54 remaining) [2022-04-18 19:23:04,875 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 54 remaining) [2022-04-18 19:23:04,875 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 54 remaining) [2022-04-18 19:23:04,876 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 54 remaining) [2022-04-18 19:23:04,876 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 54 remaining) [2022-04-18 19:23:04,876 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 54 remaining) [2022-04-18 19:23:04,876 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 54 remaining) [2022-04-18 19:23:04,876 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (2 of 54 remaining) [2022-04-18 19:23:04,877 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (1 of 54 remaining) [2022-04-18 19:23:04,877 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (0 of 54 remaining) [2022-04-18 19:23:04,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-04-18 19:23:05,089 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:23:05,091 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 19:23:05,092 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:23:05,092 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:23:05,166 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:23:05,169 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:23:05,171 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 19:23:05,171 INFO L341 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-04-18 19:23:05,176 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:23:05,176 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 175 transitions, 374 flow [2022-04-18 19:23:05,177 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 175 transitions, 374 flow [2022-04-18 19:23:05,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 174 places, 175 transitions, 374 flow [2022-04-18 19:23:05,279 INFO L129 PetriNetUnfolder]: 9/167 cut-off events. [2022-04-18 19:23:05,280 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:23:05,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 167 events. 9/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 548 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 176. Up to 6 conditions per place. [2022-04-18 19:23:05,291 INFO L116 LiptonReduction]: Number of co-enabled transitions 9760 [2022-04-18 19:23:18,637 WARN L232 SmtUtils]: Spent 10.30s on a formula simplification. DAG size of input: 67 DAG size of output: 58 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:24:36,492 WARN L232 SmtUtils]: Spent 8.42s on a formula simplification. DAG size of input: 70 DAG size of output: 64 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:25:46,381 WARN L232 SmtUtils]: Spent 9.17s on a formula simplification. DAG size of input: 161 DAG size of output: 147 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:25:59,560 WARN L232 SmtUtils]: Spent 11.08s on a formula simplification. DAG size of input: 187 DAG size of output: 167 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:26:05,244 INFO L131 LiptonReduction]: Checked pairs total: 41233 [2022-04-18 19:26:05,244 INFO L133 LiptonReduction]: Total number of compositions: 253 [2022-04-18 19:26:05,245 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 95 transitions, 214 flow [2022-04-18 19:26:07,579 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 71619 states, 65060 states have (on average 4.241177374731017) internal successors, (275931), 71618 states have internal predecessors, (275931), 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 19:26:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 71619 states, 65060 states have (on average 4.241177374731017) internal successors, (275931), 71618 states have internal predecessors, (275931), 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 19:26:07,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:26:07,855 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:26:07,856 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:26:07,856 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err9ASSERT_VIOLATIONDATA_RACE (and 76 more)] === [2022-04-18 19:26:07,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:26:07,857 INFO L85 PathProgramCache]: Analyzing trace with hash 46963690, now seen corresponding path program 1 times [2022-04-18 19:26:07,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:26:07,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543414294] [2022-04-18 19:26:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:26:07,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:26:07,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:26:07,896 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:26:07,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-04-18 19:26:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:26:08,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-18 19:26:08,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:26:08,062 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 19:26:08,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 19:26:08,062 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 19:26:08,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543414294] [2022-04-18 19:26:08,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543414294] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:26:08,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:26:08,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:26:08,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272176340] [2022-04-18 19:26:08,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:26:08,065 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:26:08,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 19:26:08,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:26:08,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:26:08,298 INFO L87 Difference]: Start difference. First operand has 71619 states, 65060 states have (on average 4.241177374731017) internal successors, (275931), 71618 states have internal predecessors, (275931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:26:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:26:08,720 INFO L93 Difference]: Finished difference Result 3918 states and 14522 transitions. [2022-04-18 19:26:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:26:08,724 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-04-18 19:26:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:26:08,758 INFO L225 Difference]: With dead ends: 3918 [2022-04-18 19:26:08,759 INFO L226 Difference]: Without dead ends: 3918 [2022-04-18 19:26:08,759 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 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 19:26:08,762 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-18 19:26:08,764 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-18 19:26:08,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2022-04-18 19:26:08,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3918. [2022-04-18 19:26:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3918 states, 3916 states have (on average 3.708375893769152) internal successors, (14522), 3917 states have internal predecessors, (14522), 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 19:26:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 14522 transitions. [2022-04-18 19:26:09,014 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 14522 transitions. Word has length 4 [2022-04-18 19:26:09,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:26:09,015 INFO L478 AbstractCegarLoop]: Abstraction has 3918 states and 14522 transitions. [2022-04-18 19:26:09,016 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:26:09,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 14522 transitions. [2022-04-18 19:26:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 19:26:09,017 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:26:09,017 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 19:26:09,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-04-18 19:26:09,226 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:26:09,227 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err9ASSERT_VIOLATIONDATA_RACE (and 76 more)] === [2022-04-18 19:26:09,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:26:09,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1455872666, now seen corresponding path program 1 times [2022-04-18 19:26:09,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:26:09,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679754196] [2022-04-18 19:26:09,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:26:09,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:26:09,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:26:09,229 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:26:09,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-04-18 19:26:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:26:09,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-18 19:26:09,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:26:09,337 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 19:26:09,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 19:26:09,338 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 19:26:09,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679754196] [2022-04-18 19:26:09,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679754196] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:26:09,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:26:09,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:26:09,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868147652] [2022-04-18 19:26:09,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:26:09,339 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:26:09,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 19:26:09,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:26:09,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:26:09,339 INFO L87 Difference]: Start difference. First operand 3918 states and 14522 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 19:26:09,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:26:09,907 INFO L93 Difference]: Finished difference Result 6217 states and 22841 transitions. [2022-04-18 19:26:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:26:09,908 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 19:26:09,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:26:09,951 INFO L225 Difference]: With dead ends: 6217 [2022-04-18 19:26:09,952 INFO L226 Difference]: Without dead ends: 6217 [2022-04-18 19:26:09,952 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 19:26:09,953 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-18 19:26:09,954 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 23 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-18 19:26:09,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6217 states. [2022-04-18 19:26:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6217 to 4386. [2022-04-18 19:26:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4384 states have (on average 3.6875) internal successors, (16166), 4385 states have internal predecessors, (16166), 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 19:26:10,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 16166 transitions. [2022-04-18 19:26:10,138 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 16166 transitions. Word has length 5 [2022-04-18 19:26:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:26:10,138 INFO L478 AbstractCegarLoop]: Abstraction has 4386 states and 16166 transitions. [2022-04-18 19:26:10,138 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 19:26:10,138 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 16166 transitions. [2022-04-18 19:26:10,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 19:26:10,141 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:26:10,141 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:26:10,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-04-18 19:26:10,351 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:26:10,351 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err8ASSERT_VIOLATIONDATA_RACE, thr2Err9ASSERT_VIOLATIONDATA_RACE (and 76 more)] === [2022-04-18 19:26:10,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:26:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash 127144215, now seen corresponding path program 1 times [2022-04-18 19:26:10,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:26:10,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350670840] [2022-04-18 19:26:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:26:10,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:26:10,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:26:10,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:26:10,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-04-18 19:26:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:26:10,478 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:26:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:26:10,533 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-04-18 19:26:10,533 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:26:10,533 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (79 of 80 remaining) [2022-04-18 19:26:10,533 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (78 of 80 remaining) [2022-04-18 19:26:10,534 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (77 of 80 remaining) [2022-04-18 19:26:10,534 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (76 of 80 remaining) [2022-04-18 19:26:10,535 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (75 of 80 remaining) [2022-04-18 19:26:10,535 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (74 of 80 remaining) [2022-04-18 19:26:10,536 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (73 of 80 remaining) [2022-04-18 19:26:10,536 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (72 of 80 remaining) [2022-04-18 19:26:10,536 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (71 of 80 remaining) [2022-04-18 19:26:10,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (70 of 80 remaining) [2022-04-18 19:26:10,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (69 of 80 remaining) [2022-04-18 19:26:10,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (68 of 80 remaining) [2022-04-18 19:26:10,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (67 of 80 remaining) [2022-04-18 19:26:10,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (66 of 80 remaining) [2022-04-18 19:26:10,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (65 of 80 remaining) [2022-04-18 19:26:10,538 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (64 of 80 remaining) [2022-04-18 19:26:10,538 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (63 of 80 remaining) [2022-04-18 19:26:10,539 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (62 of 80 remaining) [2022-04-18 19:26:10,539 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (61 of 80 remaining) [2022-04-18 19:26:10,539 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (60 of 80 remaining) [2022-04-18 19:26:10,539 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (59 of 80 remaining) [2022-04-18 19:26:10,539 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (58 of 80 remaining) [2022-04-18 19:26:10,539 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (57 of 80 remaining) [2022-04-18 19:26:10,540 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (56 of 80 remaining) [2022-04-18 19:26:10,540 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (55 of 80 remaining) [2022-04-18 19:26:10,540 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (54 of 80 remaining) [2022-04-18 19:26:10,540 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (53 of 80 remaining) [2022-04-18 19:26:10,540 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 80 remaining) [2022-04-18 19:26:10,541 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (51 of 80 remaining) [2022-04-18 19:26:10,541 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (50 of 80 remaining) [2022-04-18 19:26:10,541 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (49 of 80 remaining) [2022-04-18 19:26:10,541 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (48 of 80 remaining) [2022-04-18 19:26:10,541 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (47 of 80 remaining) [2022-04-18 19:26:10,542 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (46 of 80 remaining) [2022-04-18 19:26:10,542 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (45 of 80 remaining) [2022-04-18 19:26:10,542 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (44 of 80 remaining) [2022-04-18 19:26:10,542 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (43 of 80 remaining) [2022-04-18 19:26:10,542 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (42 of 80 remaining) [2022-04-18 19:26:10,542 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (41 of 80 remaining) [2022-04-18 19:26:10,543 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (40 of 80 remaining) [2022-04-18 19:26:10,543 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (39 of 80 remaining) [2022-04-18 19:26:10,543 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (38 of 80 remaining) [2022-04-18 19:26:10,543 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (37 of 80 remaining) [2022-04-18 19:26:10,543 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (36 of 80 remaining) [2022-04-18 19:26:10,543 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (35 of 80 remaining) [2022-04-18 19:26:10,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (34 of 80 remaining) [2022-04-18 19:26:10,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (33 of 80 remaining) [2022-04-18 19:26:10,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (32 of 80 remaining) [2022-04-18 19:26:10,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (31 of 80 remaining) [2022-04-18 19:26:10,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (30 of 80 remaining) [2022-04-18 19:26:10,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (29 of 80 remaining) [2022-04-18 19:26:10,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (28 of 80 remaining) [2022-04-18 19:26:10,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (27 of 80 remaining) [2022-04-18 19:26:10,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (26 of 80 remaining) [2022-04-18 19:26:10,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (25 of 80 remaining) [2022-04-18 19:26:10,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (24 of 80 remaining) [2022-04-18 19:26:10,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (23 of 80 remaining) [2022-04-18 19:26:10,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (22 of 80 remaining) [2022-04-18 19:26:10,546 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (21 of 80 remaining) [2022-04-18 19:26:10,546 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (20 of 80 remaining) [2022-04-18 19:26:10,546 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (19 of 80 remaining) [2022-04-18 19:26:10,546 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 80 remaining) [2022-04-18 19:26:10,546 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 80 remaining) [2022-04-18 19:26:10,546 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 80 remaining) [2022-04-18 19:26:10,547 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 80 remaining) [2022-04-18 19:26:10,547 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 80 remaining) [2022-04-18 19:26:10,547 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 80 remaining) [2022-04-18 19:26:10,547 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 80 remaining) [2022-04-18 19:26:10,547 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 80 remaining) [2022-04-18 19:26:10,547 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (10 of 80 remaining) [2022-04-18 19:26:10,548 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 80 remaining) [2022-04-18 19:26:10,548 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 80 remaining) [2022-04-18 19:26:10,548 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 80 remaining) [2022-04-18 19:26:10,548 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 80 remaining) [2022-04-18 19:26:10,548 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 80 remaining) [2022-04-18 19:26:10,548 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 80 remaining) [2022-04-18 19:26:10,549 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 80 remaining) [2022-04-18 19:26:10,549 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (2 of 80 remaining) [2022-04-18 19:26:10,549 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (1 of 80 remaining) [2022-04-18 19:26:10,549 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (0 of 80 remaining) [2022-04-18 19:26:10,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-04-18 19:26:10,761 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:26:10,764 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 19:26:10,768 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-04-18 19:26:10,768 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 19:26:10,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:26:10 BasicIcfg [2022-04-18 19:26:10,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 19:26:10,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 19:26:10,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 19:26:10,796 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 19:26:10,797 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:22:01" (3/4) ... [2022-04-18 19:26:10,799 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-04-18 19:26:10,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 19:26:10,799 INFO L158 Benchmark]: Toolchain (without parser) took 251498.51ms. Allocated memory was 58.7MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 35.1MB in the beginning and 1.6GB in the end (delta: -1.6GB). Peak memory consumption was 261.6MB. Max. memory is 16.1GB. [2022-04-18 19:26:10,799 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 58.7MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:26:10,800 INFO L158 Benchmark]: CACSL2BoogieTranslator took 476.53ms. Allocated memory is still 58.7MB. Free memory was 35.0MB in the beginning and 29.8MB in the end (delta: 5.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-04-18 19:26:10,800 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.09ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 29.8MB in the beginning and 50.7MB in the end (delta: -20.9MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2022-04-18 19:26:10,800 INFO L158 Benchmark]: Boogie Preprocessor took 85.19ms. Allocated memory is still 71.3MB. Free memory was 50.7MB in the beginning and 47.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-04-18 19:26:10,800 INFO L158 Benchmark]: RCFGBuilder took 1170.89ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 47.3MB in the beginning and 55.1MB in the end (delta: -7.7MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2022-04-18 19:26:10,801 INFO L158 Benchmark]: TraceAbstraction took 249671.55ms. Allocated memory was 86.0MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 54.3MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 253.6MB. Max. memory is 16.1GB. [2022-04-18 19:26:10,801 INFO L158 Benchmark]: Witness Printer took 2.73ms. Allocated memory is still 1.9GB. Free memory is still 1.6GB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:26:10,802 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 58.7MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 476.53ms. Allocated memory is still 58.7MB. Free memory was 35.0MB in the beginning and 29.8MB in the end (delta: 5.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.09ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 29.8MB in the beginning and 50.7MB in the end (delta: -20.9MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.19ms. Allocated memory is still 71.3MB. Free memory was 50.7MB in the beginning and 47.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1170.89ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 47.3MB in the beginning and 55.1MB in the end (delta: -7.7MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. * TraceAbstraction took 249671.55ms. Allocated memory was 86.0MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 54.3MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 253.6MB. Max. memory is 16.1GB. * Witness Printer took 2.73ms. Allocated memory is still 1.9GB. Free memory is still 1.6GB. 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: 61.8s, 108 PlacesBefore, 57 PlacesAfterwards, 108 TransitionsBefore, 54 TransitionsAfterwards, 4100 CoEnabledTransitionPairs, 8 FixpointIterations, 23 TrivialSequentialCompositions, 90 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 125 TotalNumberOfCompositions, 15089 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7701, positive: 7393, positive conditional: 0, positive unconditional: 7393, negative: 308, negative conditional: 0, negative unconditional: 308, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3375, positive: 3316, positive conditional: 0, positive unconditional: 3316, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3375, positive: 2574, positive conditional: 0, positive unconditional: 2574, negative: 801, negative conditional: 0, negative unconditional: 801, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 801, positive: 742, positive conditional: 0, positive unconditional: 742, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 22, unknown conditional: 0, unknown unconditional: 22] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50767, positive: 987, positive conditional: 0, positive unconditional: 987, negative: 3789, negative conditional: 0, negative unconditional: 3789, unknown: 45992, unknown conditional: 0, unknown unconditional: 45992] ], Cache Queries: [ total: 7701, positive: 4077, positive conditional: 0, positive unconditional: 4077, negative: 249, negative conditional: 0, negative unconditional: 249, unknown: 3375, unknown conditional: 0, unknown unconditional: 3375] , Statistics on independence cache: Total cache size (in pairs): 406, Positive cache size: 379, Positive conditional cache size: 0, Positive unconditional cache size: 379, 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 180.1s, 174 PlacesBefore, 100 PlacesAfterwards, 175 TransitionsBefore, 95 TransitionsAfterwards, 9760 CoEnabledTransitionPairs, 8 FixpointIterations, 66 TrivialSequentialCompositions, 162 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 15 ConcurrentYvCompositions, 6 ChoiceCompositions, 253 TotalNumberOfCompositions, 41233 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 20743, positive: 20311, positive conditional: 0, positive unconditional: 20311, negative: 432, negative conditional: 0, negative unconditional: 432, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8270, positive: 8179, positive conditional: 0, positive unconditional: 8179, negative: 91, negative conditional: 0, negative unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8270, positive: 6124, positive conditional: 0, positive unconditional: 6124, negative: 2146, negative conditional: 0, negative unconditional: 2146, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2146, positive: 2055, positive conditional: 0, positive unconditional: 2055, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 27, unknown conditional: 0, unknown unconditional: 27] , SemanticIndependenceRelation.Query Time [ms]: [ total: 61320, positive: 2114, positive conditional: 0, positive unconditional: 2114, negative: 2547, negative conditional: 0, negative unconditional: 2547, unknown: 56659, unknown conditional: 0, unknown unconditional: 56659] ], Cache Queries: [ total: 20743, positive: 12132, positive conditional: 0, positive unconditional: 12132, negative: 341, negative conditional: 0, negative unconditional: 341, unknown: 8270, unknown conditional: 0, unknown unconditional: 8270] , Statistics on independence cache: Total cache size (in pairs): 1078, Positive cache size: 1041, Positive conditional cache size: 0, Positive unconditional cache size: 1041, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37 - 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: 729]: Data race detected Data race detected The following path leads to a data race: [L689] 0 int count = 0; [L708] 0 int mutexa = 0; [L709] 0 int mutexb = 0; [L747] 0 pthread_t t; [L748] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [count=0, mutexa={3:0}, mutexb={4:0}, pthread_create(&t, 0, thr1, 0)=0, t={7:0}] [L749] COND TRUE 0 1 [L751] FCALL, FORK 0 pthread_create(&t, 0, thr2, 0) VAL [count=0, mutexa={3:0}, mutexb={4:0}, pthread_create(&t, 0, thr2, 0)=1, t={7:0}] [L739] COND FALSE 2 !(__VERIFIER_nondet_int()) [L742] CALL 2 my_thread2() [L719] CALL 2 __VERIFIER_atomic_acquire(&mutexb) [L692] EXPR 2 \read(*m) [L692] EXPR 2 *m==0 [L692] CALL 2 assume_abort_if_not(*m==0) [L4] COND FALSE 2 !(!cond) [L692] RET 2 assume_abort_if_not(*m==0) [L693] 2 *m = 1 [L719] RET 2 __VERIFIER_atomic_acquire(&mutexb) [L726] COND TRUE 1 1 [L728] CALL 1 __VERIFIER_atomic_acquire(&mutexa) [L692] EXPR 1 \read(*m) [L692] EXPR 1 *m==0 [L692] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L692] RET 1 assume_abort_if_not(*m==0) [L693] 1 *m = 1 [L728] RET 1 __VERIFIER_atomic_acquire(&mutexa) [L729] 1 count >= -1 VAL [arg={0:0}, arg={0:0}, count=0, mutexa={3:0}, mutexb={4:0}] [L720] CALL 2 __VERIFIER_atomic_dec() [L706] 2 count-- [L720] RET 2 __VERIFIER_atomic_dec() [L729] 1 count >= -1 VAL [arg={0:0}, arg={0:0}, count=4294967295, mutexa={3:0}, mutexb={4:0}] Now there is a data race on ~count~0 between C: count-- [706] and C: count >= -1 [729] - UnprovableResult [Line: 692]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 751]: 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. - 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 5 procedures, 166 locations, 54 error locations. Started 1 CEGAR loops. OverallTime: 63.8s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 62.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73 IncrementalHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 15 mSDtfsCounter, 73 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2480occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 135 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 228 locations, 80 error locations. Started 1 CEGAR loops. OverallTime: 185.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 182.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 27 mSDtfsCounter, 105 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71619occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 2 MinimizatonAttempts, 1831 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 19:26:11,059 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-04-18 19:26:11,102 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 137 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