./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_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/utaipan/config/TaipanReach.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_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/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 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 [2018-10-26 21:14:57,172 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:14:57,173 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:14:57,183 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:14:57,184 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:14:57,185 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:14:57,186 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:14:57,187 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:14:57,189 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:14:57,190 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:14:57,191 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:14:57,191 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:14:57,192 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:14:57,193 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:14:57,194 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:14:57,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:14:57,196 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:14:57,197 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:14:57,199 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:14:57,201 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:14:57,202 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:14:57,203 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:14:57,205 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:14:57,205 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:14:57,205 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:14:57,206 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:14:57,207 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:14:57,208 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:14:57,209 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:14:57,210 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:14:57,210 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:14:57,211 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:14:57,211 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:14:57,219 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:14:57,221 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:14:57,221 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:14:57,222 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 21:14:57,240 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:14:57,241 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:14:57,241 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:14:57,241 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 21:14:57,242 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 21:14:57,242 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 21:14:57,242 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 21:14:57,242 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 21:14:57,242 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 21:14:57,242 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 21:14:57,243 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 21:14:57,243 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:14:57,245 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:14:57,245 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:14:57,245 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:14:57,245 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:14:57,245 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:14:57,245 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:14:57,246 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:14:57,246 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:14:57,246 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:14:57,246 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:14:57,246 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:14:57,246 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:14:57,247 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:14:57,247 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:14:57,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:14:57,247 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:14:57,247 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:14:57,247 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:14:57,247 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 21:14:57,248 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:14:57,248 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:14:57,248 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:14:57,248 INFO L133 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_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/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 -> c976dd79cabe443ac09b5b35c5674998e922b27b [2018-10-26 21:14:57,279 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:14:57,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:14:57,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:14:57,294 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:14:57,295 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:14:57,295 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/mutex_lock_int_true-termination.c_false-unreach-call.i [2018-10-26 21:14:57,354 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/utaipan/data/1f258bb85/dd2ef03f0c2040c1947f30fffbe2dee5/FLAGa442a1394 [2018-10-26 21:14:57,742 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:14:57,743 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2accdb99-3623-4ff7-bab4-a18ad4591325/sv-benchmarks/c/ldv-regression/mutex_lock_int_true-termination.c_false-unreach-call.i [2018-10-26 21:14:57,750 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/utaipan/data/1f258bb85/dd2ef03f0c2040c1947f30fffbe2dee5/FLAGa442a1394 [2018-10-26 21:14:57,764 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/utaipan/data/1f258bb85/dd2ef03f0c2040c1947f30fffbe2dee5 [2018-10-26 21:14:57,767 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:14:57,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 21:14:57,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:14:57,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:14:57,774 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:14:57,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:14:57" (1/1) ... [2018-10-26 21:14:57,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33343c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:57, skipping insertion in model container [2018-10-26 21:14:57,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:14:57" (1/1) ... [2018-10-26 21:14:57,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:14:57,811 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:14:57,947 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:14:57,958 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:14:57,972 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:14:57,988 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:14:57,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:57 WrapperNode [2018-10-26 21:14:57,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:14:57,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:14:57,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:14:57,989 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:14:57,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:57" (1/1) ... [2018-10-26 21:14:58,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:57" (1/1) ... [2018-10-26 21:14:58,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:14:58,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:14:58,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:14:58,024 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:14:58,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:57" (1/1) ... [2018-10-26 21:14:58,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:57" (1/1) ... [2018-10-26 21:14:58,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:57" (1/1) ... [2018-10-26 21:14:58,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:57" (1/1) ... [2018-10-26 21:14:58,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:57" (1/1) ... [2018-10-26 21:14:58,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:57" (1/1) ... [2018-10-26 21:14:58,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:57" (1/1) ... [2018-10-26 21:14:58,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:14:58,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:14:58,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:14:58,045 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:14:58,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/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 [2018-10-26 21:14:58,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:14:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:14:58,160 INFO L130 BoogieDeclarations]: Found specification of procedure err [2018-10-26 21:14:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2018-10-26 21:14:58,160 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2018-10-26 21:14:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2018-10-26 21:14:58,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:14:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:14:58,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:14:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:14:58,516 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:14:58,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:14:58 BoogieIcfgContainer [2018-10-26 21:14:58,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:14:58,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:14:58,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:14:58,521 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:14:58,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:14:57" (1/3) ... [2018-10-26 21:14:58,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6e075c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:14:58, skipping insertion in model container [2018-10-26 21:14:58,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:57" (2/3) ... [2018-10-26 21:14:58,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6e075c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:14:58, skipping insertion in model container [2018-10-26 21:14:58,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:14:58" (3/3) ... [2018-10-26 21:14:58,525 INFO L112 eAbstractionObserver]: Analyzing ICFG mutex_lock_int_true-termination.c_false-unreach-call.i [2018-10-26 21:14:58,534 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:14:58,542 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:14:58,557 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:14:58,587 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:14:58,587 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:14:58,587 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:14:58,587 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:14:58,587 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:14:58,588 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:14:58,588 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:14:58,588 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:14:58,604 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-10-26 21:14:58,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 21:14:58,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:14:58,611 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:14:58,613 INFO L424 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:14:58,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:14:58,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1740940083, now seen corresponding path program 1 times [2018-10-26 21:14:58,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:14:58,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:14:58,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:14:58,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:14:58,664 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:14:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:14:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:14:58,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:14:58,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:14:58,852 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:14:58,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:14:58,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:14:58,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:14:58,873 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2018-10-26 21:14:59,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:14:59,021 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2018-10-26 21:14:59,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:14:59,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-26 21:14:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:14:59,031 INFO L225 Difference]: With dead ends: 40 [2018-10-26 21:14:59,031 INFO L226 Difference]: Without dead ends: 18 [2018-10-26 21:14:59,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:14:59,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-26 21:14:59,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-26 21:14:59,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-26 21:14:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2018-10-26 21:14:59,072 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 11 [2018-10-26 21:14:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:14:59,073 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2018-10-26 21:14:59,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:14:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2018-10-26 21:14:59,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 21:14:59,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:14:59,074 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:14:59,075 INFO L424 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:14:59,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:14:59,075 INFO L82 PathProgramCache]: Analyzing trace with hash 68232763, now seen corresponding path program 1 times [2018-10-26 21:14:59,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:14:59,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:14:59,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:14:59,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:14:59,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:14:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:14:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:14:59,140 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 21:14:59,154 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:14:59,155 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:14:59,156 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:14:59,157 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:14:59,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:14:59 BoogieIcfgContainer [2018-10-26 21:14:59,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:14:59,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 21:14:59,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 21:14:59,170 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 21:14:59,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:14:58" (3/4) ... [2018-10-26 21:14:59,174 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 21:14:59,175 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:14:59,175 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:14:59,176 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:14:59,177 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:14:59,216 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2accdb99-3623-4ff7-bab4-a18ad4591325/bin-2019/utaipan/witness.graphml [2018-10-26 21:14:59,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 21:14:59,217 INFO L168 Benchmark]: Toolchain (without parser) took 1449.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 959.3 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 11.5 GB. [2018-10-26 21:14:59,219 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:14:59,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.89 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:14:59,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.02 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:14:59,220 INFO L168 Benchmark]: Boogie Preprocessor took 20.07 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:14:59,221 INFO L168 Benchmark]: RCFGBuilder took 472.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2018-10-26 21:14:59,221 INFO L168 Benchmark]: TraceAbstraction took 651.93 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2018-10-26 21:14:59,222 INFO L168 Benchmark]: Witness Printer took 46.75 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:14:59,225 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 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 218.89 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 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 35.02 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.07 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 472.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 651.93 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. * Witness Printer took 46.75 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled * 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] CALL int m; [L30] RET int m; [L31] CALL m = 0 [L31] RET m = 0 [L33] CALL mutex_lock(&m) [L18] CALL, EXPR \read(*a) [L18] RET, EXPR \read(*a) [L18] COND FALSE !(*a == 1) [L19] CALL *a = 1 [L19] RET *a = 1 [L33] mutex_lock(&m) [L37] CALL mutex_lock(&m) [L18] CALL, EXPR \read(*a) [L18] RET, EXPR \read(*a) [L18] COND TRUE *a == 1 [L18] CALL err() [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 1 SDslu, 47 SDs, 0 SdLazy, 17 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 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...