./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/stateful01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/stateful01-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:00:59,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:00:59,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:00:59,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:00:59,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:00:59,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:00:59,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:00:59,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:00:59,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:00:59,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:00:59,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:00:59,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:00:59,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:00:59,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:00:59,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:00:59,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:00:59,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:00:59,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:00:59,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:00:59,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:00:59,116 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:00:59,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:00:59,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:00:59,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:00:59,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:00:59,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:00:59,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:00:59,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:00:59,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:00:59,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:00:59,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:00:59,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:00:59,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:00:59,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:00:59,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:00:59,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:00:59,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:00:59,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:00:59,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:00:59,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:00:59,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:00:59,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:00:59,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:00:59,156 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:00:59,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:00:59,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:00:59,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:00:59,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:00:59,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:00:59,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:00:59,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:00:59,158 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:00:59,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:00:59,159 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:00:59,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:00:59,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:00:59,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:00:59,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:00:59,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:00:59,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:00:59,160 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:00:59,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:00:59,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:00:59,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:00:59,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:00:59,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:00:59,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:00:59,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:00:59,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:00:59,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:00:59,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:00:59,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:00:59,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:00:59,163 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:00:59,163 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:00:59,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:00:59,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 [2022-07-19 21:00:59,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:00:59,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:00:59,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:00:59,333 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:00:59,334 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:00:59,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stateful01-1.i [2022-07-19 21:00:59,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11b32d573/1e665456818b4c2885e1ff7c97d59468/FLAG039001cf2 [2022-07-19 21:00:59,760 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:00:59,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stateful01-1.i [2022-07-19 21:00:59,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11b32d573/1e665456818b4c2885e1ff7c97d59468/FLAG039001cf2 [2022-07-19 21:00:59,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11b32d573/1e665456818b4c2885e1ff7c97d59468 [2022-07-19 21:00:59,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:00:59,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:00:59,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:00:59,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:00:59,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:00:59,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:00:59" (1/1) ... [2022-07-19 21:00:59,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d1019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:00:59, skipping insertion in model container [2022-07-19 21:00:59,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:00:59" (1/1) ... [2022-07-19 21:00:59,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:00:59,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:01:00,009 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-07-19 21:01:00,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:01:00,022 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:01:00,081 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-07-19 21:01:00,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:01:00,110 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:01:00,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:00 WrapperNode [2022-07-19 21:01:00,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:01:00,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:01:00,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:01:00,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:01:00,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:00" (1/1) ... [2022-07-19 21:01:00,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:00" (1/1) ... [2022-07-19 21:01:00,161 INFO L137 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-07-19 21:01:00,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:01:00,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:01:00,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:01:00,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:01:00,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:00" (1/1) ... [2022-07-19 21:01:00,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:00" (1/1) ... [2022-07-19 21:01:00,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:00" (1/1) ... [2022-07-19 21:01:00,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:00" (1/1) ... [2022-07-19 21:01:00,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:00" (1/1) ... [2022-07-19 21:01:00,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:00" (1/1) ... [2022-07-19 21:01:00,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:00" (1/1) ... [2022-07-19 21:01:00,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:01:00,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:01:00,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:01:00,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:01:00,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:00" (1/1) ... [2022-07-19 21:01:00,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:01:00,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:01:00,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:01:00,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:01:00,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:01:00,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:01:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:01:00,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:01:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:01:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:01:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-19 21:01:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:01:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:01:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:01:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:01:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:01:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:01:00,263 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:01:00,366 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:01:00,368 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:01:00,485 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:01:00,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:01:00,490 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:01:00,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:01:00 BoogieIcfgContainer [2022-07-19 21:01:00,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:01:00,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:01:00,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:01:00,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:01:00,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:00:59" (1/3) ... [2022-07-19 21:01:00,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a96572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:01:00, skipping insertion in model container [2022-07-19 21:01:00,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:00" (2/3) ... [2022-07-19 21:01:00,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a96572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:01:00, skipping insertion in model container [2022-07-19 21:01:00,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:01:00" (3/3) ... [2022-07-19 21:01:00,497 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-07-19 21:01:00,504 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:01:00,510 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:01:00,510 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:01:00,510 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:01:00,570 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:01:00,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 93 transitions, 202 flow [2022-07-19 21:01:00,637 INFO L129 PetriNetUnfolder]: 1/91 cut-off events. [2022-07-19 21:01:00,641 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:01:00,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 1/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2022-07-19 21:01:00,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 93 transitions, 202 flow [2022-07-19 21:01:00,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 80 transitions, 172 flow [2022-07-19 21:01:00,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:01:00,675 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70392c5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@681d3d3b [2022-07-19 21:01:00,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:01:00,694 INFO L129 PetriNetUnfolder]: 0/79 cut-off events. [2022-07-19 21:01:00,696 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:01:00,696 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:01:00,697 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:01:00,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:01:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:01:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1215155975, now seen corresponding path program 1 times [2022-07-19 21:01:00,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:01:00,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101340995] [2022-07-19 21:01:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:01:00,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:01:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:01:00,905 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:01:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:01:01,000 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:01:01,001 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:01:01,002 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-19 21:01:01,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-19 21:01:01,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-19 21:01:01,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:01:01,005 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 21:01:01,009 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:01:01,009 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:01:01,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:01:01 BasicIcfg [2022-07-19 21:01:01,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:01:01,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:01:01,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:01:01,073 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:01:01,073 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:01:00" (3/4) ... [2022-07-19 21:01:01,075 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 21:01:01,125 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:01:01,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:01:01,126 INFO L158 Benchmark]: Toolchain (without parser) took 1345.33ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 62.0MB in the beginning and 74.2MB in the end (delta: -12.2MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-07-19 21:01:01,126 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:01:01,126 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.25ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.8MB in the beginning and 79.9MB in the end (delta: -18.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:01:01,127 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.29ms. Allocated memory is still 113.2MB. Free memory was 79.9MB in the beginning and 77.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:01:01,127 INFO L158 Benchmark]: Boogie Preprocessor took 33.63ms. Allocated memory is still 113.2MB. Free memory was 77.7MB in the beginning and 76.3MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:01:01,127 INFO L158 Benchmark]: RCFGBuilder took 294.98ms. Allocated memory is still 113.2MB. Free memory was 76.3MB in the beginning and 64.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 21:01:01,127 INFO L158 Benchmark]: TraceAbstraction took 579.31ms. Allocated memory is still 113.2MB. Free memory was 63.3MB in the beginning and 83.8MB in the end (delta: -20.5MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-07-19 21:01:01,128 INFO L158 Benchmark]: Witness Printer took 52.15ms. Allocated memory is still 113.2MB. Free memory was 83.8MB in the beginning and 74.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:01:01,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.25ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.8MB in the beginning and 79.9MB in the end (delta: -18.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.29ms. Allocated memory is still 113.2MB. Free memory was 79.9MB in the beginning and 77.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.63ms. Allocated memory is still 113.2MB. Free memory was 77.7MB in the beginning and 76.3MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 294.98ms. Allocated memory is still 113.2MB. Free memory was 76.3MB in the beginning and 64.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 579.31ms. Allocated memory is still 113.2MB. Free memory was 63.3MB in the beginning and 83.8MB in the end (delta: -20.5MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Witness Printer took 52.15ms. Allocated memory is still 113.2MB. Free memory was 83.8MB in the beginning and 74.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 727]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; VAL [ma={3:0}, mb={4:0}] [L693] 0 int data1, data2; VAL [data1=0, data2=0, ma={3:0}, mb={4:0}] [L716] 0 pthread_t t1, t2; VAL [data1=0, data2=0, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L719] 0 data1 = 10 VAL [data1=10, data2=0, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L720] 0 data2 = 10 VAL [data1=10, data2=10, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=-1, t1={6:0}, t2={5:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=0, t1={6:0}, t2={5:0}] [L707] 2 data1+=5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=15, data2=10, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=15, data2=4, ma={3:0}, mb={4:0}] [L712] 2 return 0; VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=15, data2=4, ma={3:0}, mb={4:0}] [L697] 1 data1++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=4, ma={3:0}, mb={4:0}] [L700] 1 data2++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L702] 1 return 0; VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L723] 0 \read(t1) VAL [\read(t1)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L724] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L725] COND TRUE 0 data1==16 && data2==5 VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] - UnprovableResult [Line: 721]: 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: 722]: 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, 123 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 proved your program to be incorrect! [2022-07-19 21:01:01,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE