./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/mutex_lock_struct_true-termination.c_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/ldv-regression/mutex_lock_struct_true-termination.c_false-unreach-call.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --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 0.1.24-2e94e6a [2018-12-31 04:22:29,282 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 04:22:29,284 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 04:22:29,296 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 04:22:29,297 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 04:22:29,298 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 04:22:29,300 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 04:22:29,301 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 04:22:29,303 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 04:22:29,305 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 04:22:29,305 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 04:22:29,306 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 04:22:29,307 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 04:22:29,308 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 04:22:29,309 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 04:22:29,310 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 04:22:29,311 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 04:22:29,313 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 04:22:29,315 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 04:22:29,317 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 04:22:29,318 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 04:22:29,319 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 04:22:29,322 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 04:22:29,322 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 04:22:29,322 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 04:22:29,323 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 04:22:29,325 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 04:22:29,326 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 04:22:29,327 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 04:22:29,328 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 04:22:29,328 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 04:22:29,329 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 04:22:29,330 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 04:22:29,330 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 04:22:29,331 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 04:22:29,332 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 04:22:29,332 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 04:22:29,347 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 04:22:29,347 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 04:22:29,349 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 04:22:29,349 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 04:22:29,349 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 04:22:29,349 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 04:22:29,349 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 04:22:29,350 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 04:22:29,350 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 04:22:29,350 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 04:22:29,350 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 04:22:29,350 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 04:22:29,350 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 04:22:29,351 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 04:22:29,351 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 04:22:29,351 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 04:22:29,351 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 04:22:29,351 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 04:22:29,351 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 04:22:29,352 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 04:22:29,353 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 04:22:29,354 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:22:29,354 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 04:22:29,354 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 04:22:29,354 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 04:22:29,354 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 04:22:29,355 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 04:22:29,355 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 04:22:29,356 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 -> /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(__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 -> 5fcaf98e9698415fefa37f25d310a7a516d84123 [2018-12-31 04:22:29,393 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 04:22:29,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 04:22:29,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 04:22:29,413 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 04:22:29,414 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 04:22:29,414 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/mutex_lock_struct_true-termination.c_false-unreach-call.i [2018-12-31 04:22:29,482 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2cfee56a/33fc6b5d187b44a3b971fe416e414723/FLAGe31867181 [2018-12-31 04:22:29,956 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 04:22:29,957 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/mutex_lock_struct_true-termination.c_false-unreach-call.i [2018-12-31 04:22:29,962 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2cfee56a/33fc6b5d187b44a3b971fe416e414723/FLAGe31867181 [2018-12-31 04:22:30,312 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2cfee56a/33fc6b5d187b44a3b971fe416e414723 [2018-12-31 04:22:30,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 04:22:30,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 04:22:30,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 04:22:30,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 04:22:30,329 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 04:22:30,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:22:30" (1/1) ... [2018-12-31 04:22:30,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c748e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:30, skipping insertion in model container [2018-12-31 04:22:30,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:22:30" (1/1) ... [2018-12-31 04:22:30,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 04:22:30,367 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 04:22:30,579 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:22:30,600 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 04:22:30,623 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:22:30,648 INFO L195 MainTranslator]: Completed translation [2018-12-31 04:22:30,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:30 WrapperNode [2018-12-31 04:22:30,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 04:22:30,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 04:22:30,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 04:22:30,652 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 04:22:30,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:30" (1/1) ... [2018-12-31 04:22:30,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:30" (1/1) ... [2018-12-31 04:22:30,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 04:22:30,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 04:22:30,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 04:22:30,711 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 04:22:30,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:30" (1/1) ... [2018-12-31 04:22:30,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:30" (1/1) ... [2018-12-31 04:22:30,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:30" (1/1) ... [2018-12-31 04:22:30,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:30" (1/1) ... [2018-12-31 04:22:30,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:30" (1/1) ... [2018-12-31 04:22:30,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:30" (1/1) ... [2018-12-31 04:22:30,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:30" (1/1) ... [2018-12-31 04:22:30,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 04:22:30,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 04:22:30,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 04:22:30,750 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 04:22:30,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-12-31 04:22:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 04:22:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 04:22:30,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 04:22:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 04:22:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 04:22:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 04:22:31,265 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 04:22:31,266 INFO L280 CfgBuilder]: Removed 12 assue(true) statements. [2018-12-31 04:22:31,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:22:31 BoogieIcfgContainer [2018-12-31 04:22:31,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 04:22:31,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 04:22:31,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 04:22:31,272 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 04:22:31,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 04:22:30" (1/3) ... [2018-12-31 04:22:31,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303d13e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:22:31, skipping insertion in model container [2018-12-31 04:22:31,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:30" (2/3) ... [2018-12-31 04:22:31,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303d13e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:22:31, skipping insertion in model container [2018-12-31 04:22:31,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:22:31" (3/3) ... [2018-12-31 04:22:31,275 INFO L112 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct_true-termination.c_false-unreach-call.i [2018-12-31 04:22:31,286 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 04:22:31,294 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-12-31 04:22:31,313 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-12-31 04:22:31,352 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 04:22:31,352 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 04:22:31,353 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 04:22:31,353 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 04:22:31,353 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 04:22:31,353 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 04:22:31,353 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 04:22:31,354 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 04:22:31,354 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 04:22:31,374 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-12-31 04:22:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-31 04:22:31,387 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:22:31,388 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-31 04:22:31,391 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:22:31,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:22:31,398 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2018-12-31 04:22:31,402 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:22:31,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:22:31,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:22:31,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:22:31,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:22:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:22:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:22:31,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:22:31,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 04:22:31,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 04:22:31,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 04:22:31,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 04:22:31,597 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2018-12-31 04:22:31,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:22:31,653 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-12-31 04:22:31,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 04:22:31,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-12-31 04:22:31,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:22:31,665 INFO L225 Difference]: With dead ends: 25 [2018-12-31 04:22:31,665 INFO L226 Difference]: Without dead ends: 8 [2018-12-31 04:22:31,668 INFO L631 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 [2018-12-31 04:22:31,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-12-31 04:22:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-12-31 04:22:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-31 04:22:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2018-12-31 04:22:31,699 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 4 [2018-12-31 04:22:31,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:22:31,700 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2018-12-31 04:22:31,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 04:22:31,700 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2018-12-31 04:22:31,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-31 04:22:31,700 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:22:31,700 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:22:31,701 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:22:31,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:22:31,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1810629644, now seen corresponding path program 1 times [2018-12-31 04:22:31,701 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:22:31,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:22:31,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:22:31,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:22:31,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:22:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:22:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:22:31,753 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 04:22:31,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 04:22:31 BoogieIcfgContainer [2018-12-31 04:22:31,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 04:22:31,780 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 04:22:31,780 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 04:22:31,780 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 04:22:31,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:22:31" (3/4) ... [2018-12-31 04:22:31,783 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 04:22:31,827 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 04:22:31,827 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 04:22:31,828 INFO L168 Benchmark]: Toolchain (without parser) took 1509.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:22:31,830 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:22:31,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.00 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:22:31,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.66 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:22:31,832 INFO L168 Benchmark]: Boogie Preprocessor took 38.79 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:22:31,833 INFO L168 Benchmark]: RCFGBuilder took 517.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -203.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-12-31 04:22:31,833 INFO L168 Benchmark]: TraceAbstraction took 511.22 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-12-31 04:22:31,834 INFO L168 Benchmark]: Witness Printer took 47.48 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:22:31,840 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 328.00 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.66 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.79 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 517.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -203.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 511.22 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Witness Printer took 47.48 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: 6.7 MB). Peak memory consumption was 6.7 MB. 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. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, 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 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, 0.0s 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, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...