./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i -s /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fcaf98e9698415fefa37f25d310a7a516d84123 .............................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:21:27,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:27,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:27,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:27,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:27,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:27,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:27,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:27,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:27,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:27,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:27,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:27,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:27,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:27,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:27,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:27,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:27,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:27,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:27,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:27,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:27,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:27,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:27,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:27,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:27,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:27,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:27,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:27,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:27,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:27,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:27,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:27,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:27,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:27,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:27,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:27,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:27,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:27,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:27,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:27,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:27,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:21:27,450 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:27,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:27,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:27,453 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:27,453 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:27,453 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:27,454 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:27,454 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:27,454 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:27,454 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:27,454 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:27,454 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:27,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:27,455 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:27,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:27,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:27,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:27,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:27,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:27,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:27,456 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:27,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:27,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:27,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:27,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:27,457 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:27,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:27,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:27,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:27,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:27,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:27,458 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:27,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:27,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:27,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:27,458 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> 5fcaf98e9698415fefa37f25d310a7a516d84123 [2019-10-22 11:21:27,491 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:27,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:27,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:27,506 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:27,506 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:27,506 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan/../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2019-10-22 11:21:27,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan/data/6f393bc6f/ac04a7cff9e84913888ad05cb42091fc/FLAG2c4fc4bee [2019-10-22 11:21:27,935 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:27,935 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2019-10-22 11:21:27,940 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan/data/6f393bc6f/ac04a7cff9e84913888ad05cb42091fc/FLAG2c4fc4bee [2019-10-22 11:21:28,351 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan/data/6f393bc6f/ac04a7cff9e84913888ad05cb42091fc [2019-10-22 11:21:28,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:28,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:28,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:28,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:28,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:28,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:28" (1/1) ... [2019-10-22 11:21:28,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2258f497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:28, skipping insertion in model container [2019-10-22 11:21:28,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:28" (1/1) ... [2019-10-22 11:21:28,371 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:28,384 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:28,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:28,563 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:28,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:28,647 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:28,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:28 WrapperNode [2019-10-22 11:21:28,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:28,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:28,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:28,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:28,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:28" (1/1) ... [2019-10-22 11:21:28,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:28" (1/1) ... [2019-10-22 11:21:28,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:28,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:28,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:28,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:28,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:28" (1/1) ... [2019-10-22 11:21:28,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:28" (1/1) ... [2019-10-22 11:21:28,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:28" (1/1) ... [2019-10-22 11:21:28,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:28" (1/1) ... [2019-10-22 11:21:28,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:28" (1/1) ... [2019-10-22 11:21:28,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:28" (1/1) ... [2019-10-22 11:21:28,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:28" (1/1) ... [2019-10-22 11:21:28,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:28,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:28,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:28,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:28,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:21:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:28,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:21:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:21:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:21:28,873 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:28,873 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-10-22 11:21:28,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:28 BoogieIcfgContainer [2019-10-22 11:21:28,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:28,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:28,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:28,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:28,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:28" (1/3) ... [2019-10-22 11:21:28,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17050b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:28, skipping insertion in model container [2019-10-22 11:21:28,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:28" (2/3) ... [2019-10-22 11:21:28,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17050b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:28, skipping insertion in model container [2019-10-22 11:21:28,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:28" (3/3) ... [2019-10-22 11:21:28,880 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2019-10-22 11:21:28,888 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:28,894 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 11:21:28,904 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 11:21:28,925 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:28,925 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:28,925 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:28,926 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:28,926 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:28,926 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:28,926 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:28,926 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:28,938 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-10-22 11:21:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 11:21:28,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:28,944 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 11:21:28,946 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:28,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:28,951 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-10-22 11:21:28,959 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:28,959 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722000753] [2019-10-22 11:21:28,959 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:28,960 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:28,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:29,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:29,083 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722000753] [2019-10-22 11:21:29,084 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:29,084 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:29,084 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896013790] [2019-10-22 11:21:29,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:29,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:29,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:29,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:29,103 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-10-22 11:21:29,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:29,169 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-10-22 11:21:29,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:29,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-10-22 11:21:29,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:29,190 INFO L225 Difference]: With dead ends: 25 [2019-10-22 11:21:29,190 INFO L226 Difference]: Without dead ends: 8 [2019-10-22 11:21:29,193 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:29,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-10-22 11:21:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 11:21:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 11:21:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-10-22 11:21:29,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 4 [2019-10-22 11:21:29,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:29,246 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-10-22 11:21:29,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:29,246 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-10-22 11:21:29,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:21:29,247 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:29,247 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:29,247 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:29,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:29,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1810629644, now seen corresponding path program 1 times [2019-10-22 11:21:29,248 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:29,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915487899] [2019-10-22 11:21:29,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:29,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:29,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:29,296 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:21:29,297 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:21:29,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:29 BoogieIcfgContainer [2019-10-22 11:21:29,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:29,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:29,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:29,318 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:29,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:28" (3/4) ... [2019-10-22 11:21:29,320 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:21:29,354 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_89dc501a-1519-419e-8f1f-8a71d00cdf54/bin/utaipan/witness.graphml [2019-10-22 11:21:29,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:29,357 INFO L168 Benchmark]: Toolchain (without parser) took 999.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -143.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:29,357 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:29,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:29,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:29,358 INFO L168 Benchmark]: Boogie Preprocessor took 15.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:29,359 INFO L168 Benchmark]: RCFGBuilder took 179.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:29,359 INFO L168 Benchmark]: TraceAbstraction took 442.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:29,360 INFO L168 Benchmark]: Witness Printer took 36.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:29,362 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 290.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 179.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 442.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 36.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L33] struct mutex m; [L34] m.is_locked = 0 [L21] EXPR a->is_locked [L21] COND FALSE !(a->is_locked == 1) [L22] a->is_locked = 1 [L21] EXPR a->is_locked [L21] COND TRUE a->is_locked == 1 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 7 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...