./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/13-privatized_67-pthread_cond_wait_unknown_1_pos.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 1cd82b96c01a730247618eab1464d47c03eec9013c1d245312913e94981f2bce --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:55:35,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:55:35,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:55:36,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:55:36,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:55:36,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:55:36,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:55:36,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:55:36,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:55:36,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:55:36,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:55:36,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:55:36,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:55:36,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:55:36,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:55:36,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:55:36,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:55:36,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:55:36,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:55:36,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:55:36,035 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:55:36,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:55:36,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:55:36,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:55:36,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:55:36,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:55:36,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:55:36,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:55:36,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:55:36,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:55:36,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:55:36,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:55:36,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:55:36,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:55:36,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:55:36,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:55:36,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:55:36,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:55:36,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:55:36,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:55:36,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:55:36,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:55:36,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:55:36,099 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:55:36,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:55:36,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:55:36,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:55:36,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:55:36,102 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:55:36,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:55:36,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:55:36,103 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:55:36,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:55:36,104 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:55:36,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:55:36,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:55:36,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:55:36,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:55:36,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:55:36,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:55:36,105 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:55:36,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:55:36,105 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:55:36,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:55:36,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:55:36,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:55:36,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:55:36,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:55:36,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:55:36,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:55:36,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:55:36,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:55:36,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:55:36,107 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:55:36,107 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:55:36,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:55:36,107 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cd82b96c01a730247618eab1464d47c03eec9013c1d245312913e94981f2bce [2022-07-13 21:55:36,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:55:36,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:55:36,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:55:36,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:55:36,352 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:55:36,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2022-07-13 21:55:36,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f443ba923/09c1a51ca8a74435932834ef1213f7de/FLAG323fff2dc [2022-07-13 21:55:36,959 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:55:36,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2022-07-13 21:55:36,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f443ba923/09c1a51ca8a74435932834ef1213f7de/FLAG323fff2dc [2022-07-13 21:55:37,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f443ba923/09c1a51ca8a74435932834ef1213f7de [2022-07-13 21:55:37,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:55:37,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:55:37,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:55:37,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:55:37,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:55:37,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:55:37" (1/1) ... [2022-07-13 21:55:37,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e70431e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:37, skipping insertion in model container [2022-07-13 21:55:37,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:55:37" (1/1) ... [2022-07-13 21:55:37,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:55:37,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:55:37,594 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/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i[1103,1116] [2022-07-13 21:55:37,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:55:37,819 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:55:37,827 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/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i[1103,1116] [2022-07-13 21:55:37,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:55:37,909 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:55:37,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:37 WrapperNode [2022-07-13 21:55:37,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:55:37,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:55:37,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:55:37,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:55:37,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:37" (1/1) ... [2022-07-13 21:55:37,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:37" (1/1) ... [2022-07-13 21:55:37,947 INFO L137 Inliner]: procedures = 354, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2022-07-13 21:55:37,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:55:37,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:55:37,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:55:37,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:55:37,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:37" (1/1) ... [2022-07-13 21:55:37,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:37" (1/1) ... [2022-07-13 21:55:37,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:37" (1/1) ... [2022-07-13 21:55:37,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:37" (1/1) ... [2022-07-13 21:55:37,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:37" (1/1) ... [2022-07-13 21:55:37,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:37" (1/1) ... [2022-07-13 21:55:37,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:37" (1/1) ... [2022-07-13 21:55:37,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:55:37,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:55:37,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:55:37,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:55:37,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:37" (1/1) ... [2022-07-13 21:55:37,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:55:37,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:55:38,002 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 21:55:38,008 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 21:55:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2022-07-13 21:55:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2022-07-13 21:55:38,041 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2022-07-13 21:55:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2022-07-13 21:55:38,042 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2022-07-13 21:55:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:55:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:55:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 21:55:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:55:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 21:55:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:55:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:55:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:55:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:55:38,044 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 21:55:38,206 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:55:38,207 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:55:38,355 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:55:38,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:55:38,363 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:55:38,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:55:38 BoogieIcfgContainer [2022-07-13 21:55:38,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:55:38,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:55:38,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:55:38,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:55:38,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:55:37" (1/3) ... [2022-07-13 21:55:38,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f935fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:55:38, skipping insertion in model container [2022-07-13 21:55:38,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:37" (2/3) ... [2022-07-13 21:55:38,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f935fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:55:38, skipping insertion in model container [2022-07-13 21:55:38,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:55:38" (3/3) ... [2022-07-13 21:55:38,386 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2022-07-13 21:55:38,390 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:55:38,396 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:55:38,397 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 21:55:38,397 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:55:38,453 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 21:55:38,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 95 transitions, 206 flow [2022-07-13 21:55:38,510 INFO L129 PetriNetUnfolder]: 1/93 cut-off events. [2022-07-13 21:55:38,511 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 21:55:38,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 1/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2022-07-13 21:55:38,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 95 transitions, 206 flow [2022-07-13 21:55:38,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 75 transitions, 159 flow [2022-07-13 21:55:38,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:55:38,529 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@2bc5b803, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@697c669a [2022-07-13 21:55:38,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 21:55:38,540 INFO L129 PetriNetUnfolder]: 0/71 cut-off events. [2022-07-13 21:55:38,546 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-13 21:55:38,547 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:55:38,547 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] [2022-07-13 21:55:38,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:55:38,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:55:38,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1499020934, now seen corresponding path program 1 times [2022-07-13 21:55:38,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:55:38,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013941937] [2022-07-13 21:55:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:55:38,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:55:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:55:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:55:38,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:55:38,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013941937] [2022-07-13 21:55:38,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013941937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:55:38,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:55:38,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:55:38,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555114746] [2022-07-13 21:55:38,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:55:39,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:55:39,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:55:39,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:55:39,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:55:39,031 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-07-13 21:55:39,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 81.4) internal successors, (407), 5 states have internal predecessors, (407), 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 21:55:39,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:55:39,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-07-13 21:55:39,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:55:39,142 INFO L129 PetriNetUnfolder]: 16/148 cut-off events. [2022-07-13 21:55:39,142 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-07-13 21:55:39,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 148 events. 16/148 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 389 event pairs, 1 based on Foata normal form. 4/152 useless extension candidates. Maximal degree in co-relation 138. Up to 21 conditions per place. [2022-07-13 21:55:39,144 INFO L132 encePairwiseOnDemand]: 89/95 looper letters, 11 selfloop transitions, 3 changer transitions 11/90 dead transitions. [2022-07-13 21:55:39,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 248 flow [2022-07-13 21:55:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:55:39,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 21:55:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 587 transitions. [2022-07-13 21:55:39,162 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8827067669172932 [2022-07-13 21:55:39,162 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 587 transitions. [2022-07-13 21:55:39,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 587 transitions. [2022-07-13 21:55:39,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:55:39,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 587 transitions. [2022-07-13 21:55:39,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.85714285714286) internal successors, (587), 7 states have internal predecessors, (587), 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 21:55:39,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 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 21:55:39,176 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 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 21:55:39,177 INFO L186 Difference]: Start difference. First operand has 82 places, 75 transitions, 159 flow. Second operand 7 states and 587 transitions. [2022-07-13 21:55:39,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 248 flow [2022-07-13 21:55:39,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 21:55:39,181 INFO L242 Difference]: Finished difference. Result has 90 places, 75 transitions, 173 flow [2022-07-13 21:55:39,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=173, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2022-07-13 21:55:39,185 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2022-07-13 21:55:39,185 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 173 flow [2022-07-13 21:55:39,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.4) internal successors, (407), 5 states have internal predecessors, (407), 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 21:55:39,186 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:55:39,186 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] [2022-07-13 21:55:39,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:55:39,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:55:39,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:55:39,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1579592568, now seen corresponding path program 1 times [2022-07-13 21:55:39,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:55:39,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749726908] [2022-07-13 21:55:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:55:39,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:55:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:55:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:55:39,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:55:39,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749726908] [2022-07-13 21:55:39,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749726908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:55:39,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:55:39,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:55:39,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214553471] [2022-07-13 21:55:39,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:55:39,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:55:39,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:55:39,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:55:39,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:55:39,313 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 95 [2022-07-13 21:55:39,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 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 21:55:39,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:55:39,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 95 [2022-07-13 21:55:39,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:55:39,368 INFO L129 PetriNetUnfolder]: 7/102 cut-off events. [2022-07-13 21:55:39,369 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-13 21:55:39,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 102 events. 7/102 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 176 event pairs, 1 based on Foata normal form. 10/111 useless extension candidates. Maximal degree in co-relation 161. Up to 13 conditions per place. [2022-07-13 21:55:39,369 INFO L132 encePairwiseOnDemand]: 87/95 looper letters, 15 selfloop transitions, 5 changer transitions 12/80 dead transitions. [2022-07-13 21:55:39,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 80 transitions, 242 flow [2022-07-13 21:55:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:55:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 21:55:39,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2022-07-13 21:55:39,371 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7789473684210526 [2022-07-13 21:55:39,371 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 370 transitions. [2022-07-13 21:55:39,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 370 transitions. [2022-07-13 21:55:39,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:55:39,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 370 transitions. [2022-07-13 21:55:39,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 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 21:55:39,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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 21:55:39,374 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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 21:55:39,374 INFO L186 Difference]: Start difference. First operand has 90 places, 75 transitions, 173 flow. Second operand 5 states and 370 transitions. [2022-07-13 21:55:39,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 80 transitions, 242 flow [2022-07-13 21:55:39,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 80 transitions, 228 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-13 21:55:39,376 INFO L242 Difference]: Finished difference. Result has 84 places, 65 transitions, 147 flow [2022-07-13 21:55:39,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=84, PETRI_TRANSITIONS=65} [2022-07-13 21:55:39,377 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 2 predicate places. [2022-07-13 21:55:39,377 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 65 transitions, 147 flow [2022-07-13 21:55:39,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 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 21:55:39,378 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:55:39,378 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] [2022-07-13 21:55:39,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:55:39,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:55:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:55:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash 905804743, now seen corresponding path program 1 times [2022-07-13 21:55:39,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:55:39,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721828796] [2022-07-13 21:55:39,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:55:39,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:55:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:55:39,433 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:55:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:55:39,475 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:55:39,476 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:55:39,476 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-13 21:55:39,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-13 21:55:39,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-13 21:55:39,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-13 21:55:39,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:55:39,479 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-13 21:55:39,484 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:55:39,484 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:55:39,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:55:39 BasicIcfg [2022-07-13 21:55:39,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:55:39,533 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:55:39,533 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:55:39,533 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:55:39,533 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:55:38" (3/4) ... [2022-07-13 21:55:39,534 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 21:55:39,580 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:55:39,580 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:55:39,581 INFO L158 Benchmark]: Toolchain (without parser) took 2347.78ms. Allocated memory was 96.5MB in the beginning and 140.5MB in the end (delta: 44.0MB). Free memory was 62.2MB in the beginning and 87.8MB in the end (delta: -25.7MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2022-07-13 21:55:39,581 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 46.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:55:39,585 INFO L158 Benchmark]: CACSL2BoogieTranslator took 676.18ms. Allocated memory was 96.5MB in the beginning and 140.5MB in the end (delta: 44.0MB). Free memory was 62.0MB in the beginning and 87.8MB in the end (delta: -25.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-13 21:55:39,585 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.87ms. Allocated memory is still 140.5MB. Free memory was 87.8MB in the beginning and 85.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 21:55:39,586 INFO L158 Benchmark]: Boogie Preprocessor took 24.76ms. Allocated memory is still 140.5MB. Free memory was 85.0MB in the beginning and 82.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:55:39,586 INFO L158 Benchmark]: RCFGBuilder took 400.25ms. Allocated memory is still 140.5MB. Free memory was 82.5MB in the beginning and 106.5MB in the end (delta: -24.0MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2022-07-13 21:55:39,586 INFO L158 Benchmark]: TraceAbstraction took 1152.04ms. Allocated memory is still 140.5MB. Free memory was 106.5MB in the beginning and 95.2MB in the end (delta: 11.3MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2022-07-13 21:55:39,587 INFO L158 Benchmark]: Witness Printer took 47.51ms. Allocated memory is still 140.5MB. Free memory was 95.2MB in the beginning and 87.8MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-13 21:55:39,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 46.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 676.18ms. Allocated memory was 96.5MB in the beginning and 140.5MB in the end (delta: 44.0MB). Free memory was 62.0MB in the beginning and 87.8MB in the end (delta: -25.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.87ms. Allocated memory is still 140.5MB. Free memory was 87.8MB in the beginning and 85.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.76ms. Allocated memory is still 140.5MB. Free memory was 85.0MB in the beginning and 82.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 400.25ms. Allocated memory is still 140.5MB. Free memory was 82.5MB in the beginning and 106.5MB in the end (delta: -24.0MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1152.04ms. Allocated memory is still 140.5MB. Free memory was 106.5MB in the beginning and 95.2MB in the end (delta: 11.3MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Witness Printer took 47.51ms. Allocated memory is still 140.5MB. Free memory was 95.2MB in the beginning and 87.8MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1351] 0 int g; VAL [g=0] [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; VAL [g=0, mut={4:0}] [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; VAL [cond={5:0}, g=0, mut={4:0}] [L1373] 0 pthread_t t1; VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, cond={5:0}, g=0, mut={4:0}, t1={7:0}] [L1374] 0 pthread_t t2; VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, cond={5:0}, g=0, mut={4:0}, t1={7:0}, t2={6:0}] [L1375] FCALL, FORK 0 pthread_create(&t1,((void *)0),f1,((void *)0)) VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, cond={5:0}, g=0, mut={4:0}, pthread_create(&t1,((void *)0),f1,((void *)0))=-1, ptr={0:0}, t1={7:0}, t2={6:0}] [L1377] FCALL, FORK 0 pthread_create(&t2,((void *)0),f2,((void *)0)) VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, cond={5:0}, g=0, mut={4:0}, pthread_create(&t2,((void *)0),f2,((void *)0))=0, ptr={0:0}, t1={7:0}, t2={6:0}] [L1356] 1 g = 1 VAL [cond={5:0}, g=1, mut={4:0}, ptr={0:0}, ptr={0:0}] [L1365] CALL 2 __VERIFIER_assert(g == 0) [L19] COND TRUE 2 !(cond) VAL [\old(cond)=0, cond={5:0}, cond=0, g=1, mut={4:0}, ptr={0:0}, ptr={0:0}] [L19] 2 reach_error() VAL [\old(cond)=0, cond={5:0}, cond=0, g=1, mut={4:0}, ptr={0:0}, ptr={0:0}] - UnprovableResult [Line: 1375]: 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: 1377]: 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, 127 locations, 4 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: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 26 mSDtfsCounter, 73 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=1, InterpolantAutomatonStates: 12, 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, 0.3s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 246 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 proved your program to be incorrect! [2022-07-13 21:55:39,634 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