./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_45-escape_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6c24879c 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/goblint-regression/04-mutex_45-escape_rc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 305ca34367a0384e1cfb307304cf4f5bc67454529c9c0988e189092c0a2626a1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:21:51,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:21:51,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:21:51,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:21:51,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:21:51,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:21:51,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:21:51,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:21:51,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:21:51,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:21:52,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:21:52,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:21:52,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:21:52,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:21:52,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:21:52,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:21:52,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:21:52,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:21:52,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:21:52,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:21:52,016 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:21:52,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:21:52,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:21:52,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:21:52,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:21:52,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:21:52,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:21:52,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:21:52,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:21:52,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:21:52,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:21:52,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:21:52,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:21:52,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:21:52,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:21:52,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:21:52,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:21:52,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:21:52,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:21:52,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:21:52,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:21:52,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:21:52,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-13 02:21:52,059 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:21:52,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:21:52,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:21:52,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:21:52,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:21:52,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:21:52,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:21:52,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:21:52,062 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:21:52,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:21:52,063 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 02:21:52,063 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:21:52,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:21:52,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 02:21:52,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:21:52,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:21:52,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:21:52,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:21:52,064 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:21:52,064 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 02:21:52,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:21:52,064 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:21:52,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:21:52,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:21:52,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:21:52,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:21:52,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:21:52,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:21:52,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:21:52,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:21:52,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:21:52,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:21:52,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:21:52,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 305ca34367a0384e1cfb307304cf4f5bc67454529c9c0988e189092c0a2626a1 [2022-07-13 02:21:52,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:21:52,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:21:52,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:21:52,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:21:52,442 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:21:52,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_45-escape_rc.i [2022-07-13 02:21:52,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2100c9c9c/03b746fd1ec1444f93f67c9893db9e9b/FLAGc266bc210 [2022-07-13 02:21:52,885 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:21:52,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_45-escape_rc.i [2022-07-13 02:21:52,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2100c9c9c/03b746fd1ec1444f93f67c9893db9e9b/FLAGc266bc210 [2022-07-13 02:21:52,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2100c9c9c/03b746fd1ec1444f93f67c9893db9e9b [2022-07-13 02:21:52,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:21:52,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:21:52,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:21:52,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:21:52,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:21:52,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:21:52" (1/1) ... [2022-07-13 02:21:52,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3d4b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:21:52, skipping insertion in model container [2022-07-13 02:21:52,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:21:52" (1/1) ... [2022-07-13 02:21:52,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:21:52,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:21:53,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:21:53,223 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:21:53,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:21:53,273 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:21:53,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:21:53 WrapperNode [2022-07-13 02:21:53,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:21:53,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:21:53,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:21:53,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:21:53,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:21:53" (1/1) ... [2022-07-13 02:21:53,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:21:53" (1/1) ... [2022-07-13 02:21:53,317 INFO L137 Inliner]: procedures = 262, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 50 [2022-07-13 02:21:53,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:21:53,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:21:53,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:21:53,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:21:53,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:21:53" (1/1) ... [2022-07-13 02:21:53,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:21:53" (1/1) ... [2022-07-13 02:21:53,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:21:53" (1/1) ... [2022-07-13 02:21:53,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:21:53" (1/1) ... [2022-07-13 02:21:53,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:21:53" (1/1) ... [2022-07-13 02:21:53,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:21:53" (1/1) ... [2022-07-13 02:21:53,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:21:53" (1/1) ... [2022-07-13 02:21:53,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:21:53,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:21:53,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:21:53,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:21:53,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:21:53" (1/1) ... [2022-07-13 02:21:53,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:21:53,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:21:53,375 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) [2022-07-13 02:21:53,393 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 [2022-07-13 02:21:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 02:21:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 02:21:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 02:21:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 02:21:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 02:21:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 02:21:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-13 02:21:53,406 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-13 02:21:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 02:21:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:21:53,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:21:53,407 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 02:21:53,527 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:21:53,528 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:21:53,649 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:21:53,653 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:21:53,653 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 02:21:53,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:21:53 BoogieIcfgContainer [2022-07-13 02:21:53,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:21:53,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:21:53,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:21:53,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:21:53,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:21:52" (1/3) ... [2022-07-13 02:21:53,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0703a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:21:53, skipping insertion in model container [2022-07-13 02:21:53,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:21:53" (2/3) ... [2022-07-13 02:21:53,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0703a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:21:53, skipping insertion in model container [2022-07-13 02:21:53,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:21:53" (3/3) ... [2022-07-13 02:21:53,666 INFO L111 eAbstractionObserver]: Analyzing ICFG 04-mutex_45-escape_rc.i [2022-07-13 02:21:53,670 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 02:21:53,697 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:21:53,698 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-13 02:21:53,698 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 02:21:53,729 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-13 02:21:53,756 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-13 02:21:53,764 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 70 transitions, 148 flow [2022-07-13 02:21:53,767 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 70 transitions, 148 flow [2022-07-13 02:21:53,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 70 transitions, 148 flow [2022-07-13 02:21:53,793 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2022-07-13 02:21:53,793 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-13 02:21:53,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 69 events. 0/69 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-07-13 02:21:53,796 INFO L116 LiptonReduction]: Number of co-enabled transitions 480 [2022-07-13 02:21:55,449 INFO L131 LiptonReduction]: Checked pairs total: 1172 [2022-07-13 02:21:55,449 INFO L133 LiptonReduction]: Total number of compositions: 60 [2022-07-13 02:21:55,455 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 18 transitions, 44 flow [2022-07-13 02:21:55,479 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 52 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 51 states have internal predecessors, (87), 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) [2022-07-13 02:21:55,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:21:55,496 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=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55a05f09, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1a42973c [2022-07-13 02:21:55,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-13 02:21:55,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 51 states have internal predecessors, (87), 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) [2022-07-13 02:21:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-13 02:21:55,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:21:55,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-13 02:21:55,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-13 02:21:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:21:55,505 INFO L85 PathProgramCache]: Analyzing trace with hash 244367, now seen corresponding path program 1 times [2022-07-13 02:21:55,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:21:55,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060559243] [2022-07-13 02:21:55,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:21:55,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:21:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:21:55,606 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 02:21:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:21:55,635 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 02:21:55,636 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 02:21:55,637 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2022-07-13 02:21:55,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2022-07-13 02:21:55,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 7 remaining) [2022-07-13 02:21:55,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-07-13 02:21:55,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2022-07-13 02:21:55,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2022-07-13 02:21:55,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2022-07-13 02:21:55,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:21:55,642 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 02:21:55,646 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 02:21:55,646 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 02:21:55,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:21:55 BasicIcfg [2022-07-13 02:21:55,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 02:21:55,658 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 02:21:55,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 02:21:55,659 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 02:21:55,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:21:53" (3/4) ... [2022-07-13 02:21:55,660 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 02:21:55,681 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 02:21:55,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 02:21:55,683 INFO L158 Benchmark]: Toolchain (without parser) took 2775.80ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 58.7MB in the beginning and 77.7MB in the end (delta: -19.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 02:21:55,683 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 46.4MB in the beginning and 46.4MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 02:21:55,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.70ms. Allocated memory is still 92.3MB. Free memory was 58.6MB in the beginning and 51.8MB in the end (delta: 6.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 02:21:55,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.84ms. Allocated memory is still 92.3MB. Free memory was 51.8MB in the beginning and 49.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 02:21:55,684 INFO L158 Benchmark]: Boogie Preprocessor took 32.68ms. Allocated memory is still 92.3MB. Free memory was 49.7MB in the beginning and 48.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 02:21:55,684 INFO L158 Benchmark]: RCFGBuilder took 302.12ms. Allocated memory is still 92.3MB. Free memory was 48.2MB in the beginning and 36.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 02:21:55,685 INFO L158 Benchmark]: TraceAbstraction took 2001.71ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 35.8MB in the beginning and 79.8MB in the end (delta: -44.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 02:21:55,685 INFO L158 Benchmark]: Witness Printer took 23.66ms. Allocated memory is still 111.1MB. Free memory was 79.8MB in the beginning and 77.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 02:21:55,687 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 92.3MB. Free memory was 46.4MB in the beginning and 46.4MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 366.70ms. Allocated memory is still 92.3MB. Free memory was 58.6MB in the beginning and 51.8MB in the end (delta: 6.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.84ms. Allocated memory is still 92.3MB. Free memory was 51.8MB in the beginning and 49.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.68ms. Allocated memory is still 92.3MB. Free memory was 49.7MB in the beginning and 48.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 302.12ms. Allocated memory is still 92.3MB. Free memory was 48.2MB in the beginning and 36.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2001.71ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 35.8MB in the beginning and 79.8MB in the end (delta: -44.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 23.66ms. Allocated memory is still 111.1MB. Free memory was 79.8MB in the beginning and 77.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 74 PlacesBefore, 22 PlacesAfterwards, 70 TransitionsBefore, 18 TransitionsAfterwards, 480 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 60 TotalNumberOfCompositions, 1172 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 777, positive: 661, positive conditional: 0, positive unconditional: 661, negative: 116, negative conditional: 0, negative unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 365, positive: 337, positive conditional: 0, positive unconditional: 337, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 365, positive: 330, positive conditional: 0, positive unconditional: 330, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 35, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 69, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 777, positive: 324, positive conditional: 0, positive unconditional: 324, negative: 88, negative conditional: 0, negative unconditional: 88, unknown: 365, unknown conditional: 0, unknown unconditional: 365] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - 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 - CounterExampleResult [Line: 922]: integer overflow possible integer overflow possible We found a FailurePath: [L917] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L918] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L927] 0 pthread_t id; [L928] 0 int i; [L929] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, (void *) &i) VAL [arg={5:0}, i={5:0}, id={3:0}, mutex1={1:0}, mutex2={2:0}, pthread_create(&id, ((void *)0), t_fun, (void *) &i)=-1] [L920] 1 int *p = (int *) arg; [L922] EXPR 1 \read(*p) [L922] 1 (*p)++ VAL [(*p)++=-2147483650, \read(*p)=-2147483650, arg={5:0}, arg={5:0}, mutex1={1:0}, mutex2={2:0}, p={5:0}] - UnprovableResult [Line: 931]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 931]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 929]: 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: 922]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 89 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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! [2022-07-13 02:21:55,714 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(OVERFLOW)