./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/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-?-6c24879 [2022-07-12 10:15:19,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:15:19,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:15:19,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:15:19,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:15:19,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:15:19,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:15:19,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:15:19,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:15:19,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:15:19,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:15:19,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:15:19,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:15:19,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:15:19,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:15:19,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:15:19,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:15:19,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:15:19,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:15:19,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:15:19,506 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:15:19,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:15:19,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:15:19,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:15:19,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:15:19,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:15:19,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:15:19,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:15:19,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:15:19,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:15:19,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:15:19,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:15:19,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:15:19,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:15:19,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:15:19,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:15:19,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:15:19,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:15:19,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:15:19,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:15:19,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:15:19,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:15:19,524 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:15:19,550 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:15:19,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:15:19,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:15:19,551 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:15:19,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:15:19,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:15:19,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:15:19,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:15:19,552 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:15:19,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:15:19,553 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:15:19,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:15:19,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:15:19,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:15:19,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:15:19,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:15:19,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:15:19,554 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:15:19,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:15:19,554 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:15:19,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:15:19,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:15:19,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:15:19,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:15:19,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:15:19,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:15:19,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:15:19,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:15:19,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:15:19,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:15:19,556 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:15:19,557 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:15:19,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:15:19,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cd82b96c01a730247618eab1464d47c03eec9013c1d245312913e94981f2bce [2022-07-12 10:15:19,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:15:19,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:15:19,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:15:19,787 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:15:19,788 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:15:19,788 INFO L432 ainManager$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 [2022-07-12 10:15:19,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e786065c/6166ad73e997483cbb09c2fff818ba9f/FLAG1828ac6e7 [2022-07-12 10:15:20,273 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:15:20,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2022-07-12 10:15:20,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e786065c/6166ad73e997483cbb09c2fff818ba9f/FLAG1828ac6e7 [2022-07-12 10:15:20,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e786065c/6166ad73e997483cbb09c2fff818ba9f [2022-07-12 10:15:20,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:15:20,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:15:20,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:15:20,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:15:20,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:15:20,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:15:20" (1/1) ... [2022-07-12 10:15:20,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194ecc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:20, skipping insertion in model container [2022-07-12 10:15:20,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:15:20" (1/1) ... [2022-07-12 10:15:20,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:15:20,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:15:20,501 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] [2022-07-12 10:15:20,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:15:20,725 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:15:20,731 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] [2022-07-12 10:15:20,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:15:20,796 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:15:20,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:20 WrapperNode [2022-07-12 10:15:20,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:15:20,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:15:20,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:15:20,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:15:20,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:20" (1/1) ... [2022-07-12 10:15:20,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:20" (1/1) ... [2022-07-12 10:15:20,832 INFO L137 Inliner]: procedures = 354, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2022-07-12 10:15:20,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:15:20,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:15:20,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:15:20,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:15:20,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:20" (1/1) ... [2022-07-12 10:15:20,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:20" (1/1) ... [2022-07-12 10:15:20,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:20" (1/1) ... [2022-07-12 10:15:20,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:20" (1/1) ... [2022-07-12 10:15:20,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:20" (1/1) ... [2022-07-12 10:15:20,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:20" (1/1) ... [2022-07-12 10:15:20,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:20" (1/1) ... [2022-07-12 10:15:20,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:15:20,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:15:20,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:15:20,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:15:20,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:20" (1/1) ... [2022-07-12 10:15:20,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:15:20,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:15:20,915 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) [2022-07-12 10:15:20,916 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 [2022-07-12 10:15:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2022-07-12 10:15:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2022-07-12 10:15:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2022-07-12 10:15:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2022-07-12 10:15:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2022-07-12 10:15:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:15:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:15:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:15:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:15:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 10:15:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:15:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:15:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:15:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:15:20,955 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:15:21,211 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:15:21,213 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:15:21,314 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:15:21,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:15:21,321 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:15:21,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:15:21 BoogieIcfgContainer [2022-07-12 10:15:21,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:15:21,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:15:21,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:15:21,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:15:21,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:15:20" (1/3) ... [2022-07-12 10:15:21,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71abba67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:15:21, skipping insertion in model container [2022-07-12 10:15:21,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:20" (2/3) ... [2022-07-12 10:15:21,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71abba67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:15:21, skipping insertion in model container [2022-07-12 10:15:21,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:15:21" (3/3) ... [2022-07-12 10:15:21,329 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2022-07-12 10:15:21,336 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:15:21,341 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:15:21,342 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:15:21,342 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:15:21,370 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 10:15:21,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 95 transitions, 206 flow [2022-07-12 10:15:21,441 INFO L129 PetriNetUnfolder]: 1/93 cut-off events. [2022-07-12 10:15:21,441 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:15:21,444 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. [2022-07-12 10:15:21,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 95 transitions, 206 flow [2022-07-12 10:15:21,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 75 transitions, 159 flow [2022-07-12 10:15:21,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:15:21,457 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@1e1fff79, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4fac637f [2022-07-12 10:15:21,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:15:21,470 INFO L129 PetriNetUnfolder]: 0/71 cut-off events. [2022-07-12 10:15:21,470 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:15:21,470 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:15:21,471 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] [2022-07-12 10:15:21,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:15:21,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:15:21,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1499020934, now seen corresponding path program 1 times [2022-07-12 10:15:21,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:15:21,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063073044] [2022-07-12 10:15:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:15:21,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:15:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:15:21,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:15:21,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:15:21,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063073044] [2022-07-12 10:15:21,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063073044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:15:21,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:15:21,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:15:21,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952176777] [2022-07-12 10:15:21,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:15:21,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:15:21,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:15:21,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:15:21,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:15:21,930 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-07-12 10:15:21,935 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) [2022-07-12 10:15:21,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:15:21,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-07-12 10:15:21,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:15:22,034 INFO L129 PetriNetUnfolder]: 16/148 cut-off events. [2022-07-12 10:15:22,035 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-07-12 10:15:22,035 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. [2022-07-12 10:15:22,036 INFO L132 encePairwiseOnDemand]: 89/95 looper letters, 11 selfloop transitions, 3 changer transitions 11/90 dead transitions. [2022-07-12 10:15:22,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 248 flow [2022-07-12 10:15:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:15:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:15:22,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 587 transitions. [2022-07-12 10:15:22,049 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8827067669172932 [2022-07-12 10:15:22,049 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 587 transitions. [2022-07-12 10:15:22,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 587 transitions. [2022-07-12 10:15:22,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:15:22,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 587 transitions. [2022-07-12 10:15:22,057 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) [2022-07-12 10:15:22,061 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) [2022-07-12 10:15:22,062 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) [2022-07-12 10:15:22,063 INFO L186 Difference]: Start difference. First operand has 82 places, 75 transitions, 159 flow. Second operand 7 states and 587 transitions. [2022-07-12 10:15:22,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 248 flow [2022-07-12 10:15:22,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 10:15:22,067 INFO L242 Difference]: Finished difference. Result has 90 places, 75 transitions, 173 flow [2022-07-12 10:15:22,069 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} [2022-07-12 10:15:22,071 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2022-07-12 10:15:22,071 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 173 flow [2022-07-12 10:15:22,071 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) [2022-07-12 10:15:22,071 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:15:22,072 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] [2022-07-12 10:15:22,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:15:22,072 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:15:22,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:15:22,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1579592568, now seen corresponding path program 1 times [2022-07-12 10:15:22,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:15:22,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754905450] [2022-07-12 10:15:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:15:22,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:15:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:15:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:15:22,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:15:22,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754905450] [2022-07-12 10:15:22,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754905450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:15:22,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:15:22,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:15:22,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571328283] [2022-07-12 10:15:22,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:15:22,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:15:22,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:15:22,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:15:22,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:15:22,191 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 95 [2022-07-12 10:15:22,192 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) [2022-07-12 10:15:22,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:15:22,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 95 [2022-07-12 10:15:22,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:15:22,266 INFO L129 PetriNetUnfolder]: 7/102 cut-off events. [2022-07-12 10:15:22,267 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-12 10:15:22,268 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. [2022-07-12 10:15:22,269 INFO L132 encePairwiseOnDemand]: 87/95 looper letters, 15 selfloop transitions, 5 changer transitions 12/80 dead transitions. [2022-07-12 10:15:22,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 80 transitions, 242 flow [2022-07-12 10:15:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:15:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:15:22,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2022-07-12 10:15:22,272 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7789473684210526 [2022-07-12 10:15:22,272 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 370 transitions. [2022-07-12 10:15:22,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 370 transitions. [2022-07-12 10:15:22,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:15:22,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 370 transitions. [2022-07-12 10:15:22,273 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) [2022-07-12 10:15:22,275 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) [2022-07-12 10:15:22,275 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) [2022-07-12 10:15:22,275 INFO L186 Difference]: Start difference. First operand has 90 places, 75 transitions, 173 flow. Second operand 5 states and 370 transitions. [2022-07-12 10:15:22,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 80 transitions, 242 flow [2022-07-12 10:15:22,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 80 transitions, 228 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-12 10:15:22,279 INFO L242 Difference]: Finished difference. Result has 84 places, 65 transitions, 147 flow [2022-07-12 10:15:22,279 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} [2022-07-12 10:15:22,279 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 2 predicate places. [2022-07-12 10:15:22,280 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 65 transitions, 147 flow [2022-07-12 10:15:22,280 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) [2022-07-12 10:15:22,280 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:15:22,281 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] [2022-07-12 10:15:22,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:15:22,281 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:15:22,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:15:22,281 INFO L85 PathProgramCache]: Analyzing trace with hash 905804743, now seen corresponding path program 1 times [2022-07-12 10:15:22,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:15:22,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37882909] [2022-07-12 10:15:22,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:15:22,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:15:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:15:22,329 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:15:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:15:22,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:15:22,390 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:15:22,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-12 10:15:22,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-12 10:15:22,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-12 10:15:22,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-12 10:15:22,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:15:22,393 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-12 10:15:22,399 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:15:22,399 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:15:22,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:15:22 BasicIcfg [2022-07-12 10:15:22,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:15:22,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:15:22,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:15:22,452 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:15:22,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:15:21" (3/4) ... [2022-07-12 10:15:22,453 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 10:15:22,483 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:15:22,484 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:15:22,484 INFO L158 Benchmark]: Toolchain (without parser) took 2172.19ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 65.8MB in the beginning and 53.1MB in the end (delta: 12.7MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2022-07-12 10:15:22,484 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:15:22,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.69ms. Allocated memory is still 109.1MB. Free memory was 65.6MB in the beginning and 54.9MB in the end (delta: 10.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2022-07-12 10:15:22,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.62ms. Allocated memory is still 109.1MB. Free memory was 54.6MB in the beginning and 51.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:15:22,485 INFO L158 Benchmark]: Boogie Preprocessor took 22.52ms. Allocated memory is still 109.1MB. Free memory was 51.9MB in the beginning and 49.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:15:22,486 INFO L158 Benchmark]: RCFGBuilder took 467.06ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 49.6MB in the beginning and 94.1MB in the end (delta: -44.4MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2022-07-12 10:15:22,486 INFO L158 Benchmark]: TraceAbstraction took 1126.82ms. Allocated memory is still 132.1MB. Free memory was 93.8MB in the beginning and 60.5MB in the end (delta: 33.3MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. [2022-07-12 10:15:22,486 INFO L158 Benchmark]: Witness Printer took 31.64ms. Allocated memory is still 132.1MB. Free memory was 60.5MB in the beginning and 53.1MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 10:15:22,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 483.69ms. Allocated memory is still 109.1MB. Free memory was 65.6MB in the beginning and 54.9MB in the end (delta: 10.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.62ms. Allocated memory is still 109.1MB. Free memory was 54.6MB in the beginning and 51.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.52ms. Allocated memory is still 109.1MB. Free memory was 51.9MB in the beginning and 49.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 467.06ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 49.6MB in the beginning and 94.1MB in the end (delta: -44.4MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1126.82ms. Allocated memory is still 132.1MB. Free memory was 93.8MB in the beginning and 60.5MB in the end (delta: 33.3MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. * Witness Printer took 31.64ms. Allocated memory is still 132.1MB. Free memory was 60.5MB in the beginning and 53.1MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. 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=0, cond={5:0}, 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, 0.4s 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! [2022-07-12 10:15:22,518 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