./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/ldv-regression/mutex_lock_struct.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 608a161795639c070a2e0dd9cb77ec327f896e40581ac2ba975f6275c137af77 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:49:27,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:49:27,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:49:27,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:49:27,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:49:27,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:49:27,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:49:27,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:49:27,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:49:27,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:49:27,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:49:27,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:49:27,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:49:27,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:49:27,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:49:27,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:49:27,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:49:27,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:49:27,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:49:27,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:49:27,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:49:27,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:49:27,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:49:27,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:49:27,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:49:27,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:49:27,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:49:27,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:49:27,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:49:27,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:49:27,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:49:27,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:49:27,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:49:27,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:49:27,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:49:27,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:49:27,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:49:27,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:49:27,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:49:27,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:49:27,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:49:27,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 16:49:27,526 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:49:27,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:49:27,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:49:27,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:49:27,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:49:27,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:49:27,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:49:27,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:49:27,528 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:49:27,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:49:27,529 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:49:27,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 16:49:27,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:49:27,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:49:27,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:49:27,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:49:27,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:49:27,530 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:49:27,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:49:27,530 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:49:27,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:49:27,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:49:27,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:49:27,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:49:27,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:49:27,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:49:27,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:49:27,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:49:27,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 16:49:27,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 16:49:27,532 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:49:27,532 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:49:27,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:49:27,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608a161795639c070a2e0dd9cb77ec327f896e40581ac2ba975f6275c137af77 [2022-02-20 16:49:27,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:49:27,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:49:27,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:49:27,760 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:49:27,760 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:49:27,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2022-02-20 16:49:27,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3bd34d42/c178564fb374405c9077f80ad0b80ff2/FLAGe6173e44b [2022-02-20 16:49:28,128 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:49:28,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2022-02-20 16:49:28,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3bd34d42/c178564fb374405c9077f80ad0b80ff2/FLAGe6173e44b [2022-02-20 16:49:28,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3bd34d42/c178564fb374405c9077f80ad0b80ff2 [2022-02-20 16:49:28,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:49:28,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:49:28,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:49:28,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:49:28,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:49:28,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:49:28" (1/1) ... [2022-02-20 16:49:28,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4abd0313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:28, skipping insertion in model container [2022-02-20 16:49:28,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:49:28" (1/1) ... [2022-02-20 16:49:28,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:49:28,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:49:28,764 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/ldv-regression/mutex_lock_struct.i[295,308] [2022-02-20 16:49:28,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:49:28,798 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:49:28,806 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/ldv-regression/mutex_lock_struct.i[295,308] [2022-02-20 16:49:28,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:49:28,819 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:49:28,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:28 WrapperNode [2022-02-20 16:49:28,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:49:28,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:49:28,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:49:28,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:49:28,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:28" (1/1) ... [2022-02-20 16:49:28,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:28" (1/1) ... [2022-02-20 16:49:28,844 INFO L137 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-02-20 16:49:28,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:49:28,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:49:28,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:49:28,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:49:28,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:28" (1/1) ... [2022-02-20 16:49:28,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:28" (1/1) ... [2022-02-20 16:49:28,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:28" (1/1) ... [2022-02-20 16:49:28,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:28" (1/1) ... [2022-02-20 16:49:28,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:28" (1/1) ... [2022-02-20 16:49:28,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:28" (1/1) ... [2022-02-20 16:49:28,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:28" (1/1) ... [2022-02-20 16:49:28,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:49:28,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:49:28,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:49:28,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:49:28,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:28" (1/1) ... [2022-02-20 16:49:28,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:49:28,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:49:28,898 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) [2022-02-20 16:49:28,924 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 [2022-02-20 16:49:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:49:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure err [2022-02-20 16:49:28,934 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2022-02-20 16:49:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 16:49:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 16:49:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-20 16:49:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-02-20 16:49:28,934 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-02-20 16:49:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:49:28,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:49:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-20 16:49:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 16:49:28,972 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:49:28,973 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:49:29,036 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:49:29,040 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:49:29,041 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 16:49:29,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:49:29 BoogieIcfgContainer [2022-02-20 16:49:29,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:49:29,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:49:29,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:49:29,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:49:29,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:49:28" (1/3) ... [2022-02-20 16:49:29,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3401d8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:49:29, skipping insertion in model container [2022-02-20 16:49:29,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:28" (2/3) ... [2022-02-20 16:49:29,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3401d8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:49:29, skipping insertion in model container [2022-02-20 16:49:29,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:49:29" (3/3) ... [2022-02-20 16:49:29,047 INFO L111 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2022-02-20 16:49:29,050 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:49:29,050 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:49:29,077 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:49:29,081 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:49:29,082 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:49:29,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-20 16:49:29,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-20 16:49:29,096 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:49:29,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:49:29,096 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:49:29,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:49:29,100 INFO L85 PathProgramCache]: Analyzing trace with hash 847153890, now seen corresponding path program 1 times [2022-02-20 16:49:29,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:49:29,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665049725] [2022-02-20 16:49:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:49:29,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:49:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:49:29,278 INFO L290 TraceCheckUtils]: 0: Hoare triple {21#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(20, 2);call #Ultimate.allocInit(12, 3); {21#true} is VALID [2022-02-20 16:49:29,281 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~#m~0#1.base, main_~#m~0#1.offset;call main_~#m~0#1.base, main_~#m~0#1.offset := #Ultimate.allocOnStack(4);call write~int(0, main_~#m~0#1.base, main_~#m~0#1.offset, 4); {23#(= (select (select |#memory_int| |ULTIMATE.start_main_~#m~0#1.base|) |ULTIMATE.start_main_~#m~0#1.offset|) 0)} is VALID [2022-02-20 16:49:29,284 INFO L272 TraceCheckUtils]: 2: Hoare triple {23#(= (select (select |#memory_int| |ULTIMATE.start_main_~#m~0#1.base|) |ULTIMATE.start_main_~#m~0#1.offset|) 0)} call mutex_lock(main_~#m~0#1.base, main_~#m~0#1.offset); {24#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)} is VALID [2022-02-20 16:49:29,285 INFO L290 TraceCheckUtils]: 3: Hoare triple {24#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)} ~a.base, ~a.offset := #in~a.base, #in~a.offset;call #t~mem4 := read~int(~a.base, ~a.offset, 4); {25#(= |mutex_lock_#t~mem4| 0)} is VALID [2022-02-20 16:49:29,286 INFO L290 TraceCheckUtils]: 4: Hoare triple {25#(= |mutex_lock_#t~mem4| 0)} assume 1 == #t~mem4;havoc #t~mem4; {22#false} is VALID [2022-02-20 16:49:29,286 INFO L272 TraceCheckUtils]: 5: Hoare triple {22#false} call err(); {22#false} is VALID [2022-02-20 16:49:29,286 INFO L290 TraceCheckUtils]: 6: Hoare triple {22#false} assume !false; {22#false} is VALID [2022-02-20 16:49:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:49:29,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 16:49:29,288 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665049725] [2022-02-20 16:49:29,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665049725] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:49:29,289 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:49:29,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-20 16:49:29,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622060544] [2022-02-20 16:49:29,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:49:29,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-20 16:49:29,296 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:49:29,299 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:29,308 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:49:29,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-20 16:49:29,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 16:49:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-20 16:49:29,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-20 16:49:29,328 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:29,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:49:29,453 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-02-20 16:49:29,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-20 16:49:29,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-20 16:49:29,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:49:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-02-20 16:49:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-02-20 16:49:29,462 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 39 transitions. [2022-02-20 16:49:29,509 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:49:29,515 INFO L225 Difference]: With dead ends: 34 [2022-02-20 16:49:29,515 INFO L226 Difference]: Without dead ends: 14 [2022-02-20 16:49:29,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-20 16:49:29,519 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 16:49:29,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:49:29,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-20 16:49:29,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-20 16:49:29,537 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:49:29,537 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:29,538 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:29,538 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:29,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:49:29,541 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2022-02-20 16:49:29,541 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-02-20 16:49:29,541 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:49:29,541 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:49:29,542 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 16:49:29,542 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 16:49:29,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:49:29,543 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2022-02-20 16:49:29,543 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-02-20 16:49:29,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:49:29,544 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:49:29,544 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:49:29,544 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:49:29,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2022-02-20 16:49:29,547 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 7 [2022-02-20 16:49:29,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:49:29,547 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2022-02-20 16:49:29,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-02-20 16:49:29,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-20 16:49:29,548 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:49:29,548 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:49:29,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 16:49:29,549 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:49:29,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:49:29,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1741455158, now seen corresponding path program 1 times [2022-02-20 16:49:29,550 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:49:29,550 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955546751] [2022-02-20 16:49:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:49:29,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:49:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:49:29,571 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 16:49:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:49:29,595 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 16:49:29,596 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 16:49:29,597 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:49:29,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 16:49:29,600 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 16:49:29,602 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:49:29,608 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call mutex_lock(~#m~0); [2022-02-20 16:49:29,609 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 16:49:29,611 INFO L158 Benchmark]: Toolchain (without parser) took 1037.73ms. Allocated memory is still 102.8MB. Free memory was 69.7MB in the beginning and 76.2MB in the end (delta: -6.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:29,612 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 102.8MB. Free memory was 74.3MB in the beginning and 74.3MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:29,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.07ms. Allocated memory is still 102.8MB. Free memory was 69.5MB in the beginning and 80.0MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:49:29,613 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.49ms. Allocated memory is still 102.8MB. Free memory was 80.0MB in the beginning and 78.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:49:29,613 INFO L158 Benchmark]: Boogie Preprocessor took 26.99ms. Allocated memory is still 102.8MB. Free memory was 78.3MB in the beginning and 77.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:29,613 INFO L158 Benchmark]: RCFGBuilder took 169.45ms. Allocated memory is still 102.8MB. Free memory was 77.3MB in the beginning and 67.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-20 16:49:29,614 INFO L158 Benchmark]: TraceAbstraction took 567.65ms. Allocated memory is still 102.8MB. Free memory was 67.4MB in the beginning and 76.2MB in the end (delta: -8.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:29,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 102.8MB. Free memory was 74.3MB in the beginning and 74.3MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.07ms. Allocated memory is still 102.8MB. Free memory was 69.5MB in the beginning and 80.0MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.49ms. Allocated memory is still 102.8MB. Free memory was 80.0MB in the beginning and 78.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.99ms. Allocated memory is still 102.8MB. Free memory was 78.3MB in the beginning and 77.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 169.45ms. Allocated memory is still 102.8MB. Free memory was 77.3MB in the beginning and 67.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 567.65ms. Allocated memory is still 102.8MB. Free memory was 67.4MB in the beginning and 76.2MB in the end (delta: -8.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 16:49:29,657 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/ldv-regression/mutex_lock_struct.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 608a161795639c070a2e0dd9cb77ec327f896e40581ac2ba975f6275c137af77 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:49:31,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:49:31,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:49:31,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:49:31,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:49:31,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:49:31,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:49:31,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:49:31,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:49:31,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:49:31,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:49:31,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:49:31,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:49:31,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:49:31,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:49:31,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:49:31,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:49:31,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:49:31,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:49:31,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:49:31,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:49:31,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:49:31,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:49:31,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:49:31,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:49:31,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:49:31,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:49:31,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:49:31,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:49:31,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:49:31,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:49:31,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:49:31,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:49:31,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:49:31,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:49:31,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:49:31,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:49:31,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:49:31,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:49:31,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:49:31,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:49:31,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 16:49:31,300 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:49:31,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:49:31,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:49:31,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:49:31,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:49:31,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:49:31,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:49:31,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:49:31,302 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:49:31,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:49:31,303 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:49:31,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:49:31,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:49:31,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:49:31,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:49:31,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:49:31,304 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 16:49:31,304 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 16:49:31,304 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 16:49:31,304 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:49:31,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:49:31,305 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:49:31,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:49:31,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:49:31,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:49:31,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:49:31,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:49:31,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:49:31,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:49:31,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:49:31,306 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 16:49:31,306 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 16:49:31,306 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:49:31,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:49:31,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:49:31,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 16:49:31,307 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608a161795639c070a2e0dd9cb77ec327f896e40581ac2ba975f6275c137af77 [2022-02-20 16:49:31,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:49:31,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:49:31,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:49:31,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:49:31,601 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:49:31,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2022-02-20 16:49:31,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3e3af94/33991d01658941d98f630c456eb54ff6/FLAGccda659e5 [2022-02-20 16:49:32,010 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:49:32,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2022-02-20 16:49:32,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3e3af94/33991d01658941d98f630c456eb54ff6/FLAGccda659e5 [2022-02-20 16:49:32,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3e3af94/33991d01658941d98f630c456eb54ff6 [2022-02-20 16:49:32,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:49:32,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:49:32,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:49:32,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:49:32,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:49:32,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:49:32" (1/1) ... [2022-02-20 16:49:32,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28424a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:32, skipping insertion in model container [2022-02-20 16:49:32,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:49:32" (1/1) ... [2022-02-20 16:49:32,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:49:32,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:49:32,159 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/ldv-regression/mutex_lock_struct.i[295,308] [2022-02-20 16:49:32,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:49:32,189 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:49:32,203 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/ldv-regression/mutex_lock_struct.i[295,308] [2022-02-20 16:49:32,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:49:32,252 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:49:32,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:32 WrapperNode [2022-02-20 16:49:32,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:49:32,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:49:32,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:49:32,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:49:32,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:32" (1/1) ... [2022-02-20 16:49:32,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:32" (1/1) ... [2022-02-20 16:49:32,275 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-02-20 16:49:32,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:49:32,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:49:32,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:49:32,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:49:32,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:32" (1/1) ... [2022-02-20 16:49:32,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:32" (1/1) ... [2022-02-20 16:49:32,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:32" (1/1) ... [2022-02-20 16:49:32,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:32" (1/1) ... [2022-02-20 16:49:32,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:32" (1/1) ... [2022-02-20 16:49:32,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:32" (1/1) ... [2022-02-20 16:49:32,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:32" (1/1) ... [2022-02-20 16:49:32,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:49:32,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:49:32,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:49:32,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:49:32,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:32" (1/1) ... [2022-02-20 16:49:32,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:49:32,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:49:32,324 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) [2022-02-20 16:49:32,335 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 [2022-02-20 16:49:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:49:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure err [2022-02-20 16:49:32,371 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2022-02-20 16:49:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 16:49:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 16:49:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-02-20 16:49:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-02-20 16:49:32,372 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-02-20 16:49:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:49:32,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:49:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 16:49:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-02-20 16:49:32,428 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:49:32,429 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:49:32,520 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:49:32,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:49:32,525 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 16:49:32,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:49:32 BoogieIcfgContainer [2022-02-20 16:49:32,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:49:32,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:49:32,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:49:32,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:49:32,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:49:32" (1/3) ... [2022-02-20 16:49:32,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319c181f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:49:32, skipping insertion in model container [2022-02-20 16:49:32,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:32" (2/3) ... [2022-02-20 16:49:32,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319c181f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:49:32, skipping insertion in model container [2022-02-20 16:49:32,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:49:32" (3/3) ... [2022-02-20 16:49:32,530 INFO L111 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2022-02-20 16:49:32,533 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:49:32,533 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:49:32,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:49:32,571 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:49:32,571 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:49:32,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-20 16:49:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-20 16:49:32,594 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:49:32,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:49:32,594 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:49:32,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:49:32,598 INFO L85 PathProgramCache]: Analyzing trace with hash 847153890, now seen corresponding path program 1 times [2022-02-20 16:49:32,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:49:32,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538063603] [2022-02-20 16:49:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:49:32,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:49:32,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:49:32,633 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:49:32,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 16:49:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:49:32,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-20 16:49:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:49:32,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 16:49:32,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-20 16:49:32,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-20 16:49:32,824 INFO L290 TraceCheckUtils]: 0: Hoare triple {21#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(20bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32); {21#true} is VALID [2022-02-20 16:49:32,825 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~#m~0#1.base, main_~#m~0#1.offset;call main_~#m~0#1.base, main_~#m~0#1.offset := #Ultimate.allocOnStack(4bv32);call write~intINTTYPE4(0bv32, main_~#m~0#1.base, main_~#m~0#1.offset, 4bv32); {29#(= (select (select |#memory_int| |ULTIMATE.start_main_~#m~0#1.base|) |ULTIMATE.start_main_~#m~0#1.offset|) (_ bv0 32))} is VALID [2022-02-20 16:49:32,826 INFO L272 TraceCheckUtils]: 2: Hoare triple {29#(= (select (select |#memory_int| |ULTIMATE.start_main_~#m~0#1.base|) |ULTIMATE.start_main_~#m~0#1.offset|) (_ bv0 32))} call mutex_lock(main_~#m~0#1.base, main_~#m~0#1.offset); {33#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) (_ bv0 32))} is VALID [2022-02-20 16:49:32,827 INFO L290 TraceCheckUtils]: 3: Hoare triple {33#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) (_ bv0 32))} ~a.base, ~a.offset := #in~a.base, #in~a.offset;call #t~mem4 := read~intINTTYPE4(~a.base, ~a.offset, 4bv32); {37#(= |mutex_lock_#t~mem4| (_ bv0 32))} is VALID [2022-02-20 16:49:32,827 INFO L290 TraceCheckUtils]: 4: Hoare triple {37#(= |mutex_lock_#t~mem4| (_ bv0 32))} assume 1bv32 == #t~mem4;havoc #t~mem4; {22#false} is VALID [2022-02-20 16:49:32,828 INFO L272 TraceCheckUtils]: 5: Hoare triple {22#false} call err(); {22#false} is VALID [2022-02-20 16:49:32,828 INFO L290 TraceCheckUtils]: 6: Hoare triple {22#false} assume !false; {22#false} is VALID [2022-02-20 16:49:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:49:32,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 16:49:32,829 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 16:49:32,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538063603] [2022-02-20 16:49:32,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538063603] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:49:32,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:49:32,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-20 16:49:32,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876573919] [2022-02-20 16:49:32,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:49:32,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-20 16:49:32,835 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:49:32,837 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:32,845 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:49:32,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-20 16:49:32,845 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 16:49:32,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-20 16:49:32,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-20 16:49:32,858 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:32,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:49:32,991 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-02-20 16:49:32,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-20 16:49:32,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-20 16:49:32,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:49:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:32,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-02-20 16:49:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:33,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-02-20 16:49:33,005 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 39 transitions. [2022-02-20 16:49:33,045 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:49:33,051 INFO L225 Difference]: With dead ends: 34 [2022-02-20 16:49:33,051 INFO L226 Difference]: Without dead ends: 14 [2022-02-20 16:49:33,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-20 16:49:33,059 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 16:49:33,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:49:33,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-20 16:49:33,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-20 16:49:33,088 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:49:33,088 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:33,089 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:33,089 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:33,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:49:33,091 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2022-02-20 16:49:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-02-20 16:49:33,091 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:49:33,091 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:49:33,091 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 16:49:33,091 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 16:49:33,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:49:33,094 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2022-02-20 16:49:33,094 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-02-20 16:49:33,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:49:33,095 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:49:33,095 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:49:33,095 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:49:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2022-02-20 16:49:33,096 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 7 [2022-02-20 16:49:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:49:33,097 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2022-02-20 16:49:33,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-02-20 16:49:33,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-20 16:49:33,097 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:49:33,097 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:49:33,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-02-20 16:49:33,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 16:49:33,308 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:49:33,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:49:33,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1741455158, now seen corresponding path program 1 times [2022-02-20 16:49:33,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:49:33,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979998600] [2022-02-20 16:49:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:49:33,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:49:33,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:49:33,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:49:33,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-02-20 16:49:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:49:33,346 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 16:49:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:49:33,377 INFO L138 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-02-20 16:49:33,377 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 16:49:33,378 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:49:33,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-02-20 16:49:33,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 16:49:33,588 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 16:49:33,591 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:49:33,597 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call mutex_lock(~#m~0); [2022-02-20 16:49:33,597 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 16:49:33,600 INFO L158 Benchmark]: Toolchain (without parser) took 1567.43ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 38.3MB in the beginning and 40.3MB in the end (delta: -2.0MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2022-02-20 16:49:33,600 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 41.3MB in the beginning and 41.2MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:33,601 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.83ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 43.1MB in the end (delta: -5.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-02-20 16:49:33,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.59ms. Allocated memory is still 58.7MB. Free memory was 43.1MB in the beginning and 41.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:33,601 INFO L158 Benchmark]: Boogie Preprocessor took 28.08ms. Allocated memory is still 58.7MB. Free memory was 41.6MB in the beginning and 40.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:49:33,602 INFO L158 Benchmark]: RCFGBuilder took 221.16ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 31.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:49:33,602 INFO L158 Benchmark]: TraceAbstraction took 1072.23ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 31.2MB in the beginning and 40.3MB in the end (delta: -9.1MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2022-02-20 16:49:33,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 41.3MB in the beginning and 41.2MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.83ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 43.1MB in the end (delta: -5.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.59ms. Allocated memory is still 58.7MB. Free memory was 43.1MB in the beginning and 41.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.08ms. Allocated memory is still 58.7MB. Free memory was 41.6MB in the beginning and 40.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 221.16ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 31.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1072.23ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 31.2MB in the beginning and 40.3MB in the end (delta: -9.1MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 16:49:33,662 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 Result: ERROR: ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator