./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/mutex_lock_int_true-termination.c_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_int_true-termination.c_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c976dd79cabe443ac09b5b35c5674998e922b27b ......................................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-10-27 01:00:48,482 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 01:00:48,483 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 01:00:48,492 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 01:00:48,493 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 01:00:48,494 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 01:00:48,495 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 01:00:48,496 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 01:00:48,498 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 01:00:48,498 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 01:00:48,499 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 01:00:48,500 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 01:00:48,500 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 01:00:48,501 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 01:00:48,502 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 01:00:48,502 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 01:00:48,504 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 01:00:48,505 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 01:00:48,507 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 01:00:48,508 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 01:00:48,509 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 01:00:48,510 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 01:00:48,513 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 01:00:48,513 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 01:00:48,513 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 01:00:48,514 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 01:00:48,516 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 01:00:48,516 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 01:00:48,517 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 01:00:48,518 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 01:00:48,518 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 01:00:48,520 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 01:00:48,520 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 01:00:48,520 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 01:00:48,521 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 01:00:48,522 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 01:00:48,522 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-27 01:00:48,537 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 01:00:48,537 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 01:00:48,538 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 01:00:48,538 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-27 01:00:48,539 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 01:00:48,539 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 01:00:48,539 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 01:00:48,539 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 01:00:48,540 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 01:00:48,540 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 01:00:48,540 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 01:00:48,540 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 01:00:48,540 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 01:00:48,541 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 01:00:48,541 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 01:00:48,541 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 01:00:48,541 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 01:00:48,541 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 01:00:48,542 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 01:00:48,542 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 01:00:48,542 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 01:00:48,542 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 01:00:48,542 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 01:00:48,542 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 01:00:48,543 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 01:00:48,543 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 01:00:48,546 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 01:00:48,546 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 01:00:48,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 01:00:48,546 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer 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 -> 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 -> c976dd79cabe443ac09b5b35c5674998e922b27b [2018-10-27 01:00:48,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 01:00:48,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 01:00:48,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 01:00:48,599 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 01:00:48,600 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 01:00:48,601 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/mutex_lock_int_true-termination.c_false-unreach-call.i [2018-10-27 01:00:48,646 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer/data/19c42d5c7/4462173128934b9ba27995d209f253b8/FLAGcc9a8f798 [2018-10-27 01:00:49,038 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 01:00:49,039 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/sv-benchmarks/c/ldv-regression/mutex_lock_int_true-termination.c_false-unreach-call.i [2018-10-27 01:00:49,045 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer/data/19c42d5c7/4462173128934b9ba27995d209f253b8/FLAGcc9a8f798 [2018-10-27 01:00:49,058 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer/data/19c42d5c7/4462173128934b9ba27995d209f253b8 [2018-10-27 01:00:49,061 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 01:00:49,062 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 01:00:49,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 01:00:49,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 01:00:49,067 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 01:00:49,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:00:49" (1/1) ... [2018-10-27 01:00:49,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@250b1434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:49, skipping insertion in model container [2018-10-27 01:00:49,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:00:49" (1/1) ... [2018-10-27 01:00:49,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 01:00:49,099 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 01:00:49,230 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 01:00:49,239 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 01:00:49,251 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 01:00:49,263 INFO L193 MainTranslator]: Completed translation [2018-10-27 01:00:49,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:49 WrapperNode [2018-10-27 01:00:49,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 01:00:49,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 01:00:49,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 01:00:49,265 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 01:00:49,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:49" (1/1) ... [2018-10-27 01:00:49,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:49" (1/1) ... [2018-10-27 01:00:49,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:49" (1/1) ... [2018-10-27 01:00:49,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:49" (1/1) ... [2018-10-27 01:00:49,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:49" (1/1) ... [2018-10-27 01:00:49,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:49" (1/1) ... [2018-10-27 01:00:49,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:49" (1/1) ... [2018-10-27 01:00:49,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 01:00:49,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 01:00:49,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 01:00:49,293 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 01:00:49,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer/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 [2018-10-27 01:00:49,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 01:00:49,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 01:00:49,445 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2018-10-27 01:00:49,445 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2018-10-27 01:00:49,446 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2018-10-27 01:00:49,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 01:00:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-27 01:00:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure err [2018-10-27 01:00:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2018-10-27 01:00:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-27 01:00:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-27 01:00:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2018-10-27 01:00:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 01:00:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-27 01:00:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-27 01:00:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 01:00:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 01:00:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-27 01:00:49,754 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 01:00:49,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:00:49 BoogieIcfgContainer [2018-10-27 01:00:49,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 01:00:49,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 01:00:49,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 01:00:49,758 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 01:00:49,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:00:49" (1/3) ... [2018-10-27 01:00:49,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506298fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:00:49, skipping insertion in model container [2018-10-27 01:00:49,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:49" (2/3) ... [2018-10-27 01:00:49,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506298fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:00:49, skipping insertion in model container [2018-10-27 01:00:49,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:00:49" (3/3) ... [2018-10-27 01:00:49,761 INFO L112 eAbstractionObserver]: Analyzing ICFG mutex_lock_int_true-termination.c_false-unreach-call.i [2018-10-27 01:00:49,770 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 01:00:49,776 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 01:00:49,790 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 01:00:49,812 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 01:00:49,812 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 01:00:49,812 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 01:00:49,813 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 01:00:49,813 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 01:00:49,813 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 01:00:49,813 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 01:00:49,813 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 01:00:49,813 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 01:00:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-10-27 01:00:49,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-27 01:00:49,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 01:00:49,834 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 01:00:49,839 INFO L424 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 01:00:49,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 01:00:49,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1102547415, now seen corresponding path program 1 times [2018-10-27 01:00:49,846 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 01:00:49,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 01:00:49,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:00:49,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 01:00:49,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:00:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 01:00:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 01:00:50,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 01:00:50,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 01:00:50,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 01:00:50,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 01:00:50,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-27 01:00:50,122 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 6 states. [2018-10-27 01:00:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 01:00:50,289 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-10-27 01:00:50,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 01:00:50,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-10-27 01:00:50,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 01:00:50,297 INFO L225 Difference]: With dead ends: 46 [2018-10-27 01:00:50,297 INFO L226 Difference]: Without dead ends: 21 [2018-10-27 01:00:50,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 01:00:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-27 01:00:50,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-27 01:00:50,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-27 01:00:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2018-10-27 01:00:50,333 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 13 [2018-10-27 01:00:50,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 01:00:50,334 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2018-10-27 01:00:50,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 01:00:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2018-10-27 01:00:50,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-27 01:00:50,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 01:00:50,335 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 01:00:50,335 INFO L424 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 01:00:50,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 01:00:50,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1267891203, now seen corresponding path program 1 times [2018-10-27 01:00:50,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 01:00:50,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 01:00:50,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:00:50,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 01:00:50,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:00:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 01:00:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 01:00:50,381 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 01:00:50,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:00:50 BoogieIcfgContainer [2018-10-27 01:00:50,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 01:00:50,408 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 01:00:50,408 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 01:00:50,408 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 01:00:50,409 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:00:49" (3/4) ... [2018-10-27 01:00:50,411 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 01:00:50,447 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f45d8741-e089-4afb-a511-485afd1c3795/bin-2019/uautomizer/witness.graphml [2018-10-27 01:00:50,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 01:00:50,448 INFO L168 Benchmark]: Toolchain (without parser) took 1386.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.1 MB). Free memory was 959.6 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-10-27 01:00:50,449 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 01:00:50,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.60 ms. Allocated memory is still 1.0 GB. Free memory was 959.6 MB in the beginning and 948.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-27 01:00:50,450 INFO L168 Benchmark]: Boogie Preprocessor took 27.96 ms. Allocated memory is still 1.0 GB. Free memory is still 948.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 01:00:50,450 INFO L168 Benchmark]: RCFGBuilder took 462.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.1 MB). Free memory was 948.8 MB in the beginning and 1.2 GB in the end (delta: -232.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-10-27 01:00:50,452 INFO L168 Benchmark]: TraceAbstraction took 651.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. [2018-10-27 01:00:50,453 INFO L168 Benchmark]: Witness Printer took 39.04 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-10-27 01:00:50,456 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 201.60 ms. Allocated memory is still 1.0 GB. Free memory was 959.6 MB in the beginning and 948.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.96 ms. Allocated memory is still 1.0 GB. Free memory is still 948.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 462.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.1 MB). Free memory was 948.8 MB in the beginning and 1.2 GB in the end (delta: -232.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 651.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. * Witness Printer took 39.04 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] FCALL int m; VAL [m={6:0}] [L31] FCALL m = 0 VAL [m={6:0}] [L33] CALL mutex_lock(&m) VAL [a={6:0}] [L18] EXPR, FCALL \read(*a) VAL [\read(*a)=0, a={6:0}, a={6:0}] [L18] COND FALSE !(*a == 1) [L19] RET, FCALL *a = 1 VAL [a={6:0}, a={6:0}] [L33] mutex_lock(&m) VAL [m={6:0}] [L37] CALL mutex_lock(&m) VAL [a={6:0}] [L18] EXPR, FCALL \read(*a) VAL [\read(*a)=1, a={6:0}, a={6:0}] [L18] COND TRUE *a == 1 [L18] CALL err() [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 3 SDslu, 70 SDs, 0 SdLazy, 28 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...