./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 35987657 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-?-3598765 [2022-07-21 08:50:00,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:50:00,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:50:00,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:50:00,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:50:00,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:50:00,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:50:00,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:50:00,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:50:00,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:50:00,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:50:00,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:50:00,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:50:00,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:50:00,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:50:00,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:50:00,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:50:00,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:50:00,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:50:00,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:50:00,773 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:50:00,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:50:00,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:50:00,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:50:00,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:50:00,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:50:00,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:50:00,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:50:00,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:50:00,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:50:00,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:50:00,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:50:00,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:50:00,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:50:00,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:50:00,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:50:00,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:50:00,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:50:00,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:50:00,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:50:00,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:50:00,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:50:00,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:50:00,823 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:50:00,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:50:00,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:50:00,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:50:00,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:50:00,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:50:00,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:50:00,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:50:00,826 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:50:00,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:50:00,827 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:50:00,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:50:00,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:50:00,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:50:00,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:50:00,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:50:00,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:50:00,833 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:50:00,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:50:00,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:50:00,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:50:00,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:50:00,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:50:00,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:50:00,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:50:00,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:50:00,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:50:00,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:50:00,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:50:00,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:50:00,836 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:50:00,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:50:00,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:50:00,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cd82b96c01a730247618eab1464d47c03eec9013c1d245312913e94981f2bce [2022-07-21 08:50:01,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:50:01,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:50:01,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:50:01,124 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:50:01,124 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:50:01,126 INFO L432 ainManager$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 [2022-07-21 08:50:01,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b52e1b2/b48fcd8c0c084e63b835cfa4290d1f25/FLAG5b89d892b [2022-07-21 08:50:01,550 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:50:01,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2022-07-21 08:50:01,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b52e1b2/b48fcd8c0c084e63b835cfa4290d1f25/FLAG5b89d892b [2022-07-21 08:50:01,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b52e1b2/b48fcd8c0c084e63b835cfa4290d1f25 [2022-07-21 08:50:01,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:50:01,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:50:01,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:50:01,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:50:01,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:50:01,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:50:01" (1/1) ... [2022-07-21 08:50:01,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c8fc1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:01, skipping insertion in model container [2022-07-21 08:50:01,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:50:01" (1/1) ... [2022-07-21 08:50:01,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:50:01,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:50:02,128 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] [2022-07-21 08:50:02,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:50:02,403 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:50:02,410 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] [2022-07-21 08:50:02,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:50:02,485 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:50:02,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02 WrapperNode [2022-07-21 08:50:02,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:50:02,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:50:02,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:50:02,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:50:02,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2022-07-21 08:50:02,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2022-07-21 08:50:02,549 INFO L137 Inliner]: procedures = 354, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2022-07-21 08:50:02,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:50:02,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:50:02,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:50:02,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:50:02,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2022-07-21 08:50:02,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2022-07-21 08:50:02,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2022-07-21 08:50:02,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2022-07-21 08:50:02,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2022-07-21 08:50:02,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2022-07-21 08:50:02,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2022-07-21 08:50:02,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:50:02,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:50:02,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:50:02,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:50:02,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2022-07-21 08:50:02,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:50:02,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:50:02,640 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) [2022-07-21 08:50:02,668 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 [2022-07-21 08:50:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2022-07-21 08:50:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2022-07-21 08:50:02,678 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2022-07-21 08:50:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2022-07-21 08:50:02,678 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2022-07-21 08:50:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:50:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:50:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:50:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:50:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-21 08:50:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:50:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:50:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:50:02,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:50:02,680 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:50:02,862 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:50:02,864 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:50:03,046 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:50:03,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:50:03,052 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:50:03,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:50:03 BoogieIcfgContainer [2022-07-21 08:50:03,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:50:03,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:50:03,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:50:03,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:50:03,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:50:01" (1/3) ... [2022-07-21 08:50:03,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232ee30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:50:03, skipping insertion in model container [2022-07-21 08:50:03,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (2/3) ... [2022-07-21 08:50:03,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232ee30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:50:03, skipping insertion in model container [2022-07-21 08:50:03,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:50:03" (3/3) ... [2022-07-21 08:50:03,059 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2022-07-21 08:50:03,062 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:50:03,068 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:50:03,068 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:50:03,068 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:50:03,111 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 08:50:03,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 95 transitions, 206 flow [2022-07-21 08:50:03,184 INFO L129 PetriNetUnfolder]: 1/93 cut-off events. [2022-07-21 08:50:03,185 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:50:03,187 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. [2022-07-21 08:50:03,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 95 transitions, 206 flow [2022-07-21 08:50:03,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 75 transitions, 159 flow [2022-07-21 08:50:03,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:50:03,207 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@50595604, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@29b55c2f [2022-07-21 08:50:03,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:50:03,226 INFO L129 PetriNetUnfolder]: 0/71 cut-off events. [2022-07-21 08:50:03,226 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-21 08:50:03,226 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:50:03,227 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] [2022-07-21 08:50:03,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:50:03,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:50:03,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1499020934, now seen corresponding path program 1 times [2022-07-21 08:50:03,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:50:03,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561451562] [2022-07-21 08:50:03,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:50:03,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:50:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:50:03,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:50:03,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:50:03,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561451562] [2022-07-21 08:50:03,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561451562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:50:03,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:50:03,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:50:03,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155447775] [2022-07-21 08:50:03,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:50:03,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:50:03,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:50:03,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:50:03,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:50:03,633 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-07-21 08:50:03,636 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) [2022-07-21 08:50:03,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:50:03,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-07-21 08:50:03,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:50:03,764 INFO L129 PetriNetUnfolder]: 16/148 cut-off events. [2022-07-21 08:50:03,765 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-07-21 08:50:03,766 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. [2022-07-21 08:50:03,767 INFO L132 encePairwiseOnDemand]: 89/95 looper letters, 11 selfloop transitions, 3 changer transitions 11/90 dead transitions. [2022-07-21 08:50:03,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 248 flow [2022-07-21 08:50:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:50:03,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:50:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 587 transitions. [2022-07-21 08:50:03,778 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8827067669172932 [2022-07-21 08:50:03,778 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 587 transitions. [2022-07-21 08:50:03,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 587 transitions. [2022-07-21 08:50:03,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:50:03,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 587 transitions. [2022-07-21 08:50:03,784 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) [2022-07-21 08:50:03,789 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) [2022-07-21 08:50:03,789 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) [2022-07-21 08:50:03,790 INFO L186 Difference]: Start difference. First operand has 82 places, 75 transitions, 159 flow. Second operand 7 states and 587 transitions. [2022-07-21 08:50:03,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 248 flow [2022-07-21 08:50:03,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 08:50:03,795 INFO L242 Difference]: Finished difference. Result has 90 places, 75 transitions, 173 flow [2022-07-21 08:50:03,796 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} [2022-07-21 08:50:03,798 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2022-07-21 08:50:03,798 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 173 flow [2022-07-21 08:50:03,799 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) [2022-07-21 08:50:03,799 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:50:03,799 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] [2022-07-21 08:50:03,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:50:03,799 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:50:03,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:50:03,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1579592568, now seen corresponding path program 1 times [2022-07-21 08:50:03,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:50:03,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231020794] [2022-07-21 08:50:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:50:03,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:50:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:50:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:50:03,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:50:03,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231020794] [2022-07-21 08:50:03,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231020794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:50:03,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:50:03,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:50:03,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896421413] [2022-07-21 08:50:03,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:50:03,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:50:03,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:50:03,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:50:03,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:50:03,912 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 95 [2022-07-21 08:50:03,913 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) [2022-07-21 08:50:03,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:50:03,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 95 [2022-07-21 08:50:03,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:50:03,984 INFO L129 PetriNetUnfolder]: 7/102 cut-off events. [2022-07-21 08:50:03,985 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-21 08:50:03,985 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. [2022-07-21 08:50:03,986 INFO L132 encePairwiseOnDemand]: 87/95 looper letters, 15 selfloop transitions, 5 changer transitions 12/80 dead transitions. [2022-07-21 08:50:03,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 80 transitions, 242 flow [2022-07-21 08:50:03,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:50:03,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:50:03,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2022-07-21 08:50:03,987 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7789473684210526 [2022-07-21 08:50:03,988 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 370 transitions. [2022-07-21 08:50:03,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 370 transitions. [2022-07-21 08:50:03,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:50:03,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 370 transitions. [2022-07-21 08:50:03,989 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) [2022-07-21 08:50:03,990 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) [2022-07-21 08:50:03,990 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) [2022-07-21 08:50:03,990 INFO L186 Difference]: Start difference. First operand has 90 places, 75 transitions, 173 flow. Second operand 5 states and 370 transitions. [2022-07-21 08:50:03,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 80 transitions, 242 flow [2022-07-21 08:50:03,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 80 transitions, 228 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-21 08:50:03,992 INFO L242 Difference]: Finished difference. Result has 84 places, 65 transitions, 147 flow [2022-07-21 08:50:03,993 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} [2022-07-21 08:50:03,993 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 2 predicate places. [2022-07-21 08:50:03,993 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 65 transitions, 147 flow [2022-07-21 08:50:03,994 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) [2022-07-21 08:50:03,994 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:50:03,994 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] [2022-07-21 08:50:03,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:50:03,994 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:50:03,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:50:03,995 INFO L85 PathProgramCache]: Analyzing trace with hash 905804743, now seen corresponding path program 1 times [2022-07-21 08:50:03,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:50:03,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992470336] [2022-07-21 08:50:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:50:03,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:50:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:50:04,036 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:50:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:50:04,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:50:04,123 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:50:04,125 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-21 08:50:04,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-21 08:50:04,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-21 08:50:04,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-21 08:50:04,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:50:04,127 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-21 08:50:04,131 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:50:04,132 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:50:04,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:50:04 BasicIcfg [2022-07-21 08:50:04,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:50:04,196 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:50:04,196 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:50:04,196 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:50:04,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:50:03" (3/4) ... [2022-07-21 08:50:04,198 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 08:50:04,254 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:50:04,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:50:04,255 INFO L158 Benchmark]: Toolchain (without parser) took 2314.47ms. Allocated memory was 50.3MB in the beginning and 88.1MB in the end (delta: 37.7MB). Free memory was 24.7MB in the beginning and 39.6MB in the end (delta: -14.9MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2022-07-21 08:50:04,255 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 31.9MB in the beginning and 31.9MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:50:04,256 INFO L158 Benchmark]: CACSL2BoogieTranslator took 544.68ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 24.6MB in the beginning and 26.9MB in the end (delta: -2.3MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2022-07-21 08:50:04,256 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.03ms. Allocated memory is still 60.8MB. Free memory was 26.9MB in the beginning and 37.9MB in the end (delta: -11.0MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2022-07-21 08:50:04,256 INFO L158 Benchmark]: Boogie Preprocessor took 46.19ms. Allocated memory is still 60.8MB. Free memory was 37.9MB in the beginning and 35.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:50:04,257 INFO L158 Benchmark]: RCFGBuilder took 457.21ms. Allocated memory is still 60.8MB. Free memory was 35.6MB in the beginning and 32.2MB in the end (delta: 3.3MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2022-07-21 08:50:04,257 INFO L158 Benchmark]: TraceAbstraction took 1140.20ms. Allocated memory was 60.8MB in the beginning and 88.1MB in the end (delta: 27.3MB). Free memory was 31.7MB in the beginning and 47.3MB in the end (delta: -15.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 08:50:04,258 INFO L158 Benchmark]: Witness Printer took 58.54ms. Allocated memory is still 88.1MB. Free memory was 47.3MB in the beginning and 39.6MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-21 08:50:04,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 31.9MB in the beginning and 31.9MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 544.68ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 24.6MB in the beginning and 26.9MB in the end (delta: -2.3MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.03ms. Allocated memory is still 60.8MB. Free memory was 26.9MB in the beginning and 37.9MB in the end (delta: -11.0MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.19ms. Allocated memory is still 60.8MB. Free memory was 37.9MB in the beginning and 35.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 457.21ms. Allocated memory is still 60.8MB. Free memory was 35.6MB in the beginning and 32.2MB in the end (delta: 3.3MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1140.20ms. Allocated memory was 60.8MB in the beginning and 88.1MB in the end (delta: 27.3MB). Free memory was 31.7MB in the beginning and 47.3MB in the end (delta: -15.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 58.54ms. Allocated memory is still 88.1MB. Free memory was 47.3MB in the beginning and 39.6MB in the end (delta: 7.7MB). 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: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.1s 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! [2022-07-21 08:50:04,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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