./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct_true-termination.c_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak --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 Kojak --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 0.1.23-aa41828 [2018-11-23 06:38:42,381 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 06:38:42,382 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 06:38:42,389 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 06:38:42,390 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 06:38:42,390 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 06:38:42,391 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 06:38:42,392 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 06:38:42,394 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 06:38:42,395 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 06:38:42,396 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 06:38:42,396 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 06:38:42,397 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 06:38:42,397 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 06:38:42,398 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 06:38:42,399 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 06:38:42,400 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 06:38:42,401 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 06:38:42,403 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 06:38:42,404 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 06:38:42,405 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 06:38:42,406 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 06:38:42,408 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 06:38:42,409 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 06:38:42,409 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 06:38:42,410 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 06:38:42,410 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 06:38:42,411 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 06:38:42,412 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 06:38:42,413 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 06:38:42,413 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 06:38:42,414 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 06:38:42,414 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 06:38:42,414 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 06:38:42,415 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 06:38:42,416 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 06:38:42,416 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-23 06:38:42,428 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 06:38:42,428 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 06:38:42,429 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 06:38:42,429 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-11-23 06:38:42,430 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 06:38:42,430 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 06:38:42,430 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 06:38:42,430 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 06:38:42,430 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 06:38:42,430 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 06:38:42,431 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 06:38:42,431 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 06:38:42,431 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 06:38:42,431 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 06:38:42,431 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 06:38:42,432 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 06:38:42,432 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 06:38:42,432 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 06:38:42,432 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-23 06:38:42,432 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-23 06:38:42,432 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 06:38:42,433 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 06:38:42,433 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-23 06:38:42,433 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 06:38:42,433 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 06:38:42,433 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 06:38:42,433 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-23 06:38:42,434 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 06:38:42,434 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 06:38:42,434 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_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak 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 -> Kojak 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 [2018-11-23 06:38:42,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 06:38:42,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 06:38:42,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 06:38:42,474 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 06:38:42,474 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 06:38:42,474 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak/../../sv-benchmarks/c/ldv-regression/mutex_lock_struct_true-termination.c_false-unreach-call.i [2018-11-23 06:38:42,517 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak/data/904b55652/edccf959d20e4eaba156d2a41fad1a0d/FLAG5e085f552 [2018-11-23 06:38:42,874 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 06:38:42,875 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/sv-benchmarks/c/ldv-regression/mutex_lock_struct_true-termination.c_false-unreach-call.i [2018-11-23 06:38:42,880 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak/data/904b55652/edccf959d20e4eaba156d2a41fad1a0d/FLAG5e085f552 [2018-11-23 06:38:43,283 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak/data/904b55652/edccf959d20e4eaba156d2a41fad1a0d [2018-11-23 06:38:43,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 06:38:43,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 06:38:43,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 06:38:43,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 06:38:43,289 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 06:38:43,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:38:43" (1/1) ... [2018-11-23 06:38:43,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b38c877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:43, skipping insertion in model container [2018-11-23 06:38:43,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:38:43" (1/1) ... [2018-11-23 06:38:43,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 06:38:43,315 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 06:38:43,442 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 06:38:43,449 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 06:38:43,460 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 06:38:43,471 INFO L195 MainTranslator]: Completed translation [2018-11-23 06:38:43,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:43 WrapperNode [2018-11-23 06:38:43,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 06:38:43,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 06:38:43,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 06:38:43,472 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 06:38:43,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:43" (1/1) ... [2018-11-23 06:38:43,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:43" (1/1) ... [2018-11-23 06:38:43,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 06:38:43,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 06:38:43,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 06:38:43,498 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 06:38:43,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:43" (1/1) ... [2018-11-23 06:38:43,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:43" (1/1) ... [2018-11-23 06:38:43,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:43" (1/1) ... [2018-11-23 06:38:43,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:43" (1/1) ... [2018-11-23 06:38:43,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:43" (1/1) ... [2018-11-23 06:38:43,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:43" (1/1) ... [2018-11-23 06:38:43,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:43" (1/1) ... [2018-11-23 06:38:43,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 06:38:43,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 06:38:43,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 06:38:43,512 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 06:38:43,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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:10000 [2018-11-23 06:38:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 06:38:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 06:38:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure err [2018-11-23 06:38:43,601 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2018-11-23 06:38:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2018-11-23 06:38:43,601 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2018-11-23 06:38:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 06:38:43,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 06:38:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 06:38:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 06:38:43,742 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 06:38:43,743 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-23 06:38:43,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:38:43 BoogieIcfgContainer [2018-11-23 06:38:43,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 06:38:43,743 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-23 06:38:43,744 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-23 06:38:43,752 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-23 06:38:43,752 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:38:43" (1/1) ... [2018-11-23 06:38:43,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:38:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 06:38:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 14 transitions. [2018-11-23 06:38:43,804 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-11-23 06:38:43,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-23 06:38:43,806 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 06:38:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:38:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:38:44,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 06:38:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 15 transitions. [2018-11-23 06:38:44,028 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-23 06:38:44,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 06:38:44,032 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 06:38:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:38:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:38:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:38:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:38:44,094 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];havoc main_#res;havoc main_~#m~0.base, main_~#m~0.offset;call main_~#m~0.base, main_~#m~0.offset := #Ultimate.alloc(4);call write~int(0, main_~#m~0.base, main_~#m~0.offset, 4); VAL [|#NULL.base|=0, |#NULL.offset|=0, |ULTIMATE.start_main_~#m~0.base|=2, |ULTIMATE.start_main_~#m~0.offset|=0] [?] CALL call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [|#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0] [?] ~a.base, ~a.offset := #in~a.base, #in~a.offset;call #t~mem0 := read~int(~a.base, ~a.offset, 4); VAL [mutex_lock_~a.base=2, mutex_lock_~a.offset=0, |#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0, |mutex_lock_#t~mem0|=0] [?] assume !(1 == #t~mem0);havoc #t~mem0; VAL [mutex_lock_~a.base=2, mutex_lock_~a.offset=0, |#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0] [?] call write~int(1, ~a.base, ~a.offset, 4);assume true; VAL [mutex_lock_~a.base=2, mutex_lock_~a.offset=0, |#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0] [?] RET #25#return; VAL [|#NULL.base|=0, |#NULL.offset|=0, |ULTIMATE.start_main_~#m~0.base|=2, |ULTIMATE.start_main_~#m~0.offset|=0] [?] CALL call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [|#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0] [?] ~a.base, ~a.offset := #in~a.base, #in~a.offset;call #t~mem0 := read~int(~a.base, ~a.offset, 4); VAL [mutex_lock_~a.base=2, mutex_lock_~a.offset=0, |#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0, |mutex_lock_#t~mem0|=1] [?] assume 1 == #t~mem0;havoc #t~mem0; VAL [mutex_lock_~a.base=2, mutex_lock_~a.offset=0, |#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0] [?] CALL call err(); VAL [|#NULL.base|=0, |#NULL.offset|=0] [?] assume !false; VAL [|#NULL.base|=0, |#NULL.offset|=0] [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; [?] havoc main_#res; [?] havoc main_~#m~0.base, main_~#m~0.offset; [L33] call main_~#m~0.base, main_~#m~0.offset := #Ultimate.alloc(4); [L34] call write~int(0, main_~#m~0.base, main_~#m~0.offset, 4); VAL [#NULL.base=0, #NULL.offset=0, main_~#m~0.base=2, main_~#m~0.offset=0] [L36] CALL call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0] [L19-L23] ~a.base, ~a.offset := #in~a.base, #in~a.offset; [L21] call #t~mem0 := read~int(~a.base, ~a.offset, 4); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, #t~mem0=0, ~a.base=2, ~a.offset=0] [L21] assume !(1 == #t~mem0); [L21] havoc #t~mem0; VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, ~a.base=2, ~a.offset=0] [L22] call write~int(1, ~a.base, ~a.offset, 4); [L19-L23] ensures true; VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, ~a.base=2, ~a.offset=0] [L36] RET call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [#NULL.base=0, #NULL.offset=0, main_~#m~0.base=2, main_~#m~0.offset=0] [L40] CALL call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0] [L19-L23] ~a.base, ~a.offset := #in~a.base, #in~a.offset; [L21] call #t~mem0 := read~int(~a.base, ~a.offset, 4); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, #t~mem0=1, ~a.base=2, ~a.offset=0] [L21] assume 1 == #t~mem0; [L21] havoc #t~mem0; VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, ~a.base=2, ~a.offset=0] [L21] CALL call err(); VAL [#NULL.base=0, #NULL.offset=0] [L13] assert false; VAL [#NULL.base=0, #NULL.offset=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; [?] havoc main_#res; [?] havoc main_~#m~0.base, main_~#m~0.offset; [L33] call main_~#m~0.base, main_~#m~0.offset := #Ultimate.alloc(4); [L34] call write~int(0, main_~#m~0.base, main_~#m~0.offset, 4); VAL [#NULL.base=0, #NULL.offset=0, main_~#m~0.base=2, main_~#m~0.offset=0] [L36] CALL call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0] [L19-L23] ~a.base, ~a.offset := #in~a.base, #in~a.offset; [L21] call #t~mem0 := read~int(~a.base, ~a.offset, 4); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, #t~mem0=0, ~a.base=2, ~a.offset=0] [L21] assume !(1 == #t~mem0); [L21] havoc #t~mem0; VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, ~a.base=2, ~a.offset=0] [L22] call write~int(1, ~a.base, ~a.offset, 4); [L19-L23] ensures true; VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, ~a.base=2, ~a.offset=0] [L36] RET call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [#NULL.base=0, #NULL.offset=0, main_~#m~0.base=2, main_~#m~0.offset=0] [L40] CALL call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0] [L19-L23] ~a.base, ~a.offset := #in~a.base, #in~a.offset; [L21] call #t~mem0 := read~int(~a.base, ~a.offset, 4); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, #t~mem0=1, ~a.base=2, ~a.offset=0] [L21] assume 1 == #t~mem0; [L21] havoc #t~mem0; VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, ~a.base=2, ~a.offset=0] [L21] CALL call err(); VAL [#NULL.base=0, #NULL.offset=0] [L13] assert false; VAL [#NULL.base=0, #NULL.offset=0] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [?] havoc main_#res; [?] havoc main_~#m~0; [L33] FCALL call main_~#m~0 := #Ultimate.alloc(4); [L34] FCALL call write~int(0, { base: main_~#m~0!base, offset: main_~#m~0!offset }, 4); VAL [#NULL!base=0, #NULL!offset=0, main_~#m~0!base=2, main_~#m~0!offset=0] [L36] CALL call mutex_lock(main_~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=0, ~a!base=2, ~a!offset=0] [L21] COND FALSE !(1 == #t~mem0) [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L22] FCALL call write~int(1, { base: ~a!base, offset: ~a!offset }, 4); [L36] RET call mutex_lock(main_~#m~0); VAL [#NULL!base=0, #NULL!offset=0, main_~#m~0!base=2, main_~#m~0!offset=0] [L40] CALL call mutex_lock(main_~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=1, ~a!base=2, ~a!offset=0] [L21] COND TRUE 1 == #t~mem0 [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L21] CALL call err(); VAL [#NULL!base=0, #NULL!offset=0] [L13] assert false; VAL [#NULL!base=0, #NULL!offset=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [?] havoc main_#res; [?] havoc main_~#m~0; [L33] FCALL call main_~#m~0 := #Ultimate.alloc(4); [L34] FCALL call write~int(0, { base: main_~#m~0!base, offset: main_~#m~0!offset }, 4); VAL [#NULL!base=0, #NULL!offset=0, main_~#m~0!base=2, main_~#m~0!offset=0] [L36] CALL call mutex_lock(main_~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=0, ~a!base=2, ~a!offset=0] [L21] COND FALSE !(1 == #t~mem0) [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L22] FCALL call write~int(1, { base: ~a!base, offset: ~a!offset }, 4); [L36] RET call mutex_lock(main_~#m~0); VAL [#NULL!base=0, #NULL!offset=0, main_~#m~0!base=2, main_~#m~0!offset=0] [L40] CALL call mutex_lock(main_~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=1, ~a!base=2, ~a!offset=0] [L21] COND TRUE 1 == #t~mem0 [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L21] CALL call err(); VAL [#NULL!base=0, #NULL!offset=0] [L13] assert false; VAL [#NULL!base=0, #NULL!offset=0] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L33] FCALL call ~#m~0 := #Ultimate.alloc(4); [L34] FCALL call write~int(0, { base: ~#m~0!base, offset: ~#m~0!offset }, 4); VAL [#NULL!base=0, #NULL!offset=0] [L36] CALL call mutex_lock(~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=0, ~a!base=2, ~a!offset=0] [L21] COND FALSE !(1 == #t~mem0) [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L22] FCALL call write~int(1, { base: ~a!base, offset: ~a!offset }, 4); [L36] RET call mutex_lock(~#m~0); VAL [#NULL!base=0, #NULL!offset=0] [L40] CALL call mutex_lock(~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=1, ~a!base=2, ~a!offset=0] [L21] COND TRUE 1 == #t~mem0 [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L21] CALL call err(); VAL [#NULL!base=0, #NULL!offset=0] [L13] assert false; VAL [#NULL!base=0, #NULL!offset=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L33] FCALL call ~#m~0 := #Ultimate.alloc(4); [L34] FCALL call write~int(0, { base: ~#m~0!base, offset: ~#m~0!offset }, 4); VAL [#NULL!base=0, #NULL!offset=0] [L36] CALL call mutex_lock(~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=0, ~a!base=2, ~a!offset=0] [L21] COND FALSE !(1 == #t~mem0) [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L22] FCALL call write~int(1, { base: ~a!base, offset: ~a!offset }, 4); [L36] RET call mutex_lock(~#m~0); VAL [#NULL!base=0, #NULL!offset=0] [L40] CALL call mutex_lock(~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=1, ~a!base=2, ~a!offset=0] [L21] COND TRUE 1 == #t~mem0 [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L21] CALL call err(); VAL [#NULL!base=0, #NULL!offset=0] [L13] assert false; VAL [#NULL!base=0, #NULL!offset=0] [L33] struct mutex m; [L34] m.is_locked = 0 [L36] CALL mutex_lock(&m) VAL [a={2:0}] [L21] EXPR a->is_locked VAL [a={2:0}, a={2:0}, a->is_locked=0] [L21] COND FALSE !(a->is_locked == 1) [L22] a->is_locked = 1 [L36] RET mutex_lock(&m) [L40] CALL mutex_lock(&m) VAL [a={2:0}] [L21] EXPR a->is_locked VAL [a={2:0}, a={2:0}, a->is_locked=1] [L21] COND TRUE a->is_locked == 1 [L21] CALL err() [L13] __VERIFIER_error() ----- [2018-11-23 06:38:44,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 06:38:44 ImpRootNode [2018-11-23 06:38:44,133 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-23 06:38:44,134 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 06:38:44,134 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 06:38:44,134 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 06:38:44,134 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:38:43" (3/4) ... [2018-11-23 06:38:44,137 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];havoc main_#res;havoc main_~#m~0.base, main_~#m~0.offset;call main_~#m~0.base, main_~#m~0.offset := #Ultimate.alloc(4);call write~int(0, main_~#m~0.base, main_~#m~0.offset, 4); VAL [|#NULL.base|=0, |#NULL.offset|=0, |ULTIMATE.start_main_~#m~0.base|=2, |ULTIMATE.start_main_~#m~0.offset|=0] [?] CALL call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [|#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0] [?] ~a.base, ~a.offset := #in~a.base, #in~a.offset;call #t~mem0 := read~int(~a.base, ~a.offset, 4); VAL [mutex_lock_~a.base=2, mutex_lock_~a.offset=0, |#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0, |mutex_lock_#t~mem0|=0] [?] assume !(1 == #t~mem0);havoc #t~mem0; VAL [mutex_lock_~a.base=2, mutex_lock_~a.offset=0, |#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0] [?] call write~int(1, ~a.base, ~a.offset, 4);assume true; VAL [mutex_lock_~a.base=2, mutex_lock_~a.offset=0, |#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0] [?] RET #25#return; VAL [|#NULL.base|=0, |#NULL.offset|=0, |ULTIMATE.start_main_~#m~0.base|=2, |ULTIMATE.start_main_~#m~0.offset|=0] [?] CALL call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [|#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0] [?] ~a.base, ~a.offset := #in~a.base, #in~a.offset;call #t~mem0 := read~int(~a.base, ~a.offset, 4); VAL [mutex_lock_~a.base=2, mutex_lock_~a.offset=0, |#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0, |mutex_lock_#t~mem0|=1] [?] assume 1 == #t~mem0;havoc #t~mem0; VAL [mutex_lock_~a.base=2, mutex_lock_~a.offset=0, |#NULL.base|=0, |#NULL.offset|=0, |mutex_lock_#in~a.base|=2, |mutex_lock_#in~a.offset|=0] [?] CALL call err(); VAL [|#NULL.base|=0, |#NULL.offset|=0] [?] assume !false; VAL [|#NULL.base|=0, |#NULL.offset|=0] [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; [?] havoc main_#res; [?] havoc main_~#m~0.base, main_~#m~0.offset; [L33] call main_~#m~0.base, main_~#m~0.offset := #Ultimate.alloc(4); [L34] call write~int(0, main_~#m~0.base, main_~#m~0.offset, 4); VAL [#NULL.base=0, #NULL.offset=0, main_~#m~0.base=2, main_~#m~0.offset=0] [L36] CALL call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0] [L19-L23] ~a.base, ~a.offset := #in~a.base, #in~a.offset; [L21] call #t~mem0 := read~int(~a.base, ~a.offset, 4); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, #t~mem0=0, ~a.base=2, ~a.offset=0] [L21] assume !(1 == #t~mem0); [L21] havoc #t~mem0; VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, ~a.base=2, ~a.offset=0] [L22] call write~int(1, ~a.base, ~a.offset, 4); [L19-L23] ensures true; VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, ~a.base=2, ~a.offset=0] [L36] RET call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [#NULL.base=0, #NULL.offset=0, main_~#m~0.base=2, main_~#m~0.offset=0] [L40] CALL call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0] [L19-L23] ~a.base, ~a.offset := #in~a.base, #in~a.offset; [L21] call #t~mem0 := read~int(~a.base, ~a.offset, 4); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, #t~mem0=1, ~a.base=2, ~a.offset=0] [L21] assume 1 == #t~mem0; [L21] havoc #t~mem0; VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, ~a.base=2, ~a.offset=0] [L21] CALL call err(); VAL [#NULL.base=0, #NULL.offset=0] [L13] assert false; VAL [#NULL.base=0, #NULL.offset=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; [?] havoc main_#res; [?] havoc main_~#m~0.base, main_~#m~0.offset; [L33] call main_~#m~0.base, main_~#m~0.offset := #Ultimate.alloc(4); [L34] call write~int(0, main_~#m~0.base, main_~#m~0.offset, 4); VAL [#NULL.base=0, #NULL.offset=0, main_~#m~0.base=2, main_~#m~0.offset=0] [L36] CALL call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0] [L19-L23] ~a.base, ~a.offset := #in~a.base, #in~a.offset; [L21] call #t~mem0 := read~int(~a.base, ~a.offset, 4); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, #t~mem0=0, ~a.base=2, ~a.offset=0] [L21] assume !(1 == #t~mem0); [L21] havoc #t~mem0; VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, ~a.base=2, ~a.offset=0] [L22] call write~int(1, ~a.base, ~a.offset, 4); [L19-L23] ensures true; VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, ~a.base=2, ~a.offset=0] [L36] RET call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [#NULL.base=0, #NULL.offset=0, main_~#m~0.base=2, main_~#m~0.offset=0] [L40] CALL call mutex_lock(main_~#m~0.base, main_~#m~0.offset); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0] [L19-L23] ~a.base, ~a.offset := #in~a.base, #in~a.offset; [L21] call #t~mem0 := read~int(~a.base, ~a.offset, 4); VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, #t~mem0=1, ~a.base=2, ~a.offset=0] [L21] assume 1 == #t~mem0; [L21] havoc #t~mem0; VAL [#in~a.base=2, #in~a.offset=0, #NULL.base=0, #NULL.offset=0, ~a.base=2, ~a.offset=0] [L21] CALL call err(); VAL [#NULL.base=0, #NULL.offset=0] [L13] assert false; VAL [#NULL.base=0, #NULL.offset=0] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [?] havoc main_#res; [?] havoc main_~#m~0; [L33] FCALL call main_~#m~0 := #Ultimate.alloc(4); [L34] FCALL call write~int(0, { base: main_~#m~0!base, offset: main_~#m~0!offset }, 4); VAL [#NULL!base=0, #NULL!offset=0, main_~#m~0!base=2, main_~#m~0!offset=0] [L36] CALL call mutex_lock(main_~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=0, ~a!base=2, ~a!offset=0] [L21] COND FALSE !(1 == #t~mem0) [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L22] FCALL call write~int(1, { base: ~a!base, offset: ~a!offset }, 4); [L36] RET call mutex_lock(main_~#m~0); VAL [#NULL!base=0, #NULL!offset=0, main_~#m~0!base=2, main_~#m~0!offset=0] [L40] CALL call mutex_lock(main_~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=1, ~a!base=2, ~a!offset=0] [L21] COND TRUE 1 == #t~mem0 [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L21] CALL call err(); VAL [#NULL!base=0, #NULL!offset=0] [L13] assert false; VAL [#NULL!base=0, #NULL!offset=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [?] havoc main_#res; [?] havoc main_~#m~0; [L33] FCALL call main_~#m~0 := #Ultimate.alloc(4); [L34] FCALL call write~int(0, { base: main_~#m~0!base, offset: main_~#m~0!offset }, 4); VAL [#NULL!base=0, #NULL!offset=0, main_~#m~0!base=2, main_~#m~0!offset=0] [L36] CALL call mutex_lock(main_~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=0, ~a!base=2, ~a!offset=0] [L21] COND FALSE !(1 == #t~mem0) [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L22] FCALL call write~int(1, { base: ~a!base, offset: ~a!offset }, 4); [L36] RET call mutex_lock(main_~#m~0); VAL [#NULL!base=0, #NULL!offset=0, main_~#m~0!base=2, main_~#m~0!offset=0] [L40] CALL call mutex_lock(main_~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=1, ~a!base=2, ~a!offset=0] [L21] COND TRUE 1 == #t~mem0 [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L21] CALL call err(); VAL [#NULL!base=0, #NULL!offset=0] [L13] assert false; VAL [#NULL!base=0, #NULL!offset=0] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L33] FCALL call ~#m~0 := #Ultimate.alloc(4); [L34] FCALL call write~int(0, { base: ~#m~0!base, offset: ~#m~0!offset }, 4); VAL [#NULL!base=0, #NULL!offset=0] [L36] CALL call mutex_lock(~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=0, ~a!base=2, ~a!offset=0] [L21] COND FALSE !(1 == #t~mem0) [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L22] FCALL call write~int(1, { base: ~a!base, offset: ~a!offset }, 4); [L36] RET call mutex_lock(~#m~0); VAL [#NULL!base=0, #NULL!offset=0] [L40] CALL call mutex_lock(~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=1, ~a!base=2, ~a!offset=0] [L21] COND TRUE 1 == #t~mem0 [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L21] CALL call err(); VAL [#NULL!base=0, #NULL!offset=0] [L13] assert false; VAL [#NULL!base=0, #NULL!offset=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L33] FCALL call ~#m~0 := #Ultimate.alloc(4); [L34] FCALL call write~int(0, { base: ~#m~0!base, offset: ~#m~0!offset }, 4); VAL [#NULL!base=0, #NULL!offset=0] [L36] CALL call mutex_lock(~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=0, ~a!base=2, ~a!offset=0] [L21] COND FALSE !(1 == #t~mem0) [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L22] FCALL call write~int(1, { base: ~a!base, offset: ~a!offset }, 4); [L36] RET call mutex_lock(~#m~0); VAL [#NULL!base=0, #NULL!offset=0] [L40] CALL call mutex_lock(~#m~0); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0] [L19-L23] ~a := #in~a; [L21] FCALL call #t~mem0 := read~int({ base: ~a!base, offset: ~a!offset }, 4); VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, #t~mem0=1, ~a!base=2, ~a!offset=0] [L21] COND TRUE 1 == #t~mem0 [L21] havoc #t~mem0; VAL [#in~a!base=2, #in~a!offset=0, #NULL!base=0, #NULL!offset=0, ~a!base=2, ~a!offset=0] [L21] CALL call err(); VAL [#NULL!base=0, #NULL!offset=0] [L13] assert false; VAL [#NULL!base=0, #NULL!offset=0] [L33] struct mutex m; [L34] m.is_locked = 0 [L36] CALL mutex_lock(&m) VAL [a={2:0}] [L21] EXPR a->is_locked VAL [a={2:0}, a={2:0}, a->is_locked=0] [L21] COND FALSE !(a->is_locked == 1) [L22] a->is_locked = 1 [L36] RET mutex_lock(&m) [L40] CALL mutex_lock(&m) VAL [a={2:0}] [L21] EXPR a->is_locked VAL [a={2:0}, a={2:0}, a->is_locked=1] [L21] COND TRUE a->is_locked == 1 [L21] CALL err() [L13] __VERIFIER_error() ----- [2018-11-23 06:38:44,179 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3ae9eef3-e348-4c0b-b938-92e963fe1185/bin-2019/ukojak/witness.graphml [2018-11-23 06:38:44,179 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 06:38:44,180 INFO L168 Benchmark]: Toolchain (without parser) took 894.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -132.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2018-11-23 06:38:44,181 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-11-23 06:38:44,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.16 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 06:38:44,182 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.08 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 06:38:44,182 INFO L168 Benchmark]: Boogie Preprocessor took 14.23 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:38:44,183 INFO L168 Benchmark]: RCFGBuilder took 231.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-23 06:38:44,183 INFO L168 Benchmark]: CodeCheck took 389.83 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: 34.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 11.5 GB. [2018-11-23 06:38:44,184 INFO L168 Benchmark]: Witness Printer took 45.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:38:44,187 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 3 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 12 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 95 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - 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 [L36] CALL mutex_lock(&m) VAL [a={2:0}] [L21] EXPR a->is_locked VAL [a={2:0}, a={2:0}, a->is_locked=0] [L21] COND FALSE !(a->is_locked == 1) [L22] a->is_locked = 1 [L36] RET mutex_lock(&m) [L40] CALL mutex_lock(&m) VAL [a={2:0}] [L21] EXPR a->is_locked VAL [a={2:0}, a={2:0}, a->is_locked=1] [L21] COND TRUE a->is_locked == 1 [L21] CALL err() [L13] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 185.16 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 25.08 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.23 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 231.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * CodeCheck took 389.83 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: 34.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 11.5 GB. * Witness Printer took 45.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...