./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/bin-2019/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d5e76e59f87104cc83de8acda77b849da7d1b09 ............................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 21:20:05,931 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 21:20:05,933 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 21:20:05,941 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 21:20:05,942 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 21:20:05,942 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 21:20:05,943 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 21:20:05,944 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 21:20:05,945 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 21:20:05,946 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 21:20:05,947 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 21:20:05,947 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 21:20:05,947 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 21:20:05,948 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 21:20:05,949 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 21:20:05,950 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 21:20:05,950 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 21:20:05,951 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 21:20:05,953 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 21:20:05,954 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 21:20:05,955 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 21:20:05,956 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 21:20:05,957 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 21:20:05,957 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 21:20:05,957 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 21:20:05,958 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 21:20:05,959 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 21:20:05,959 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 21:20:05,960 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 21:20:05,960 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 21:20:05,960 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 21:20:05,961 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 21:20:05,961 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 21:20:05,961 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 21:20:05,962 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 21:20:05,962 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 21:20:05,963 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2018-12-08 21:20:05,970 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 21:20:05,971 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 21:20:05,971 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 21:20:05,971 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 21:20:05,972 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 21:20:05,972 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 21:20:05,972 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 21:20:05,972 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 21:20:05,972 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 21:20:05,972 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 21:20:05,973 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-08 21:20:05,973 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-08 21:20:05,973 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-08 21:20:05,973 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 21:20:05,973 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 21:20:05,973 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 21:20:05,973 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-08 21:20:05,974 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-08 21:20:05,974 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 21:20:05,974 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 21:20:05,974 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-08 21:20:05,974 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 21:20:05,974 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 21:20:05,975 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-08 21:20:05,975 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 21:20:05,975 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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_fd9f6934-aafb-4191-b57b-cebad3ce83bd/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 3d5e76e59f87104cc83de8acda77b849da7d1b09 [2018-12-08 21:20:05,995 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 21:20:06,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 21:20:06,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 21:20:06,008 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 21:20:06,008 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 21:20:06,008 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/bin-2019/ukojak/../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i [2018-12-08 21:20:06,051 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/bin-2019/ukojak/data/b3ab32c30/ed48ed7683b94b0e818298cfe485d8ee/FLAGafd45afdb [2018-12-08 21:20:06,461 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 21:20:06,461 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i [2018-12-08 21:20:06,466 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/bin-2019/ukojak/data/b3ab32c30/ed48ed7683b94b0e818298cfe485d8ee/FLAGafd45afdb [2018-12-08 21:20:06,474 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/bin-2019/ukojak/data/b3ab32c30/ed48ed7683b94b0e818298cfe485d8ee [2018-12-08 21:20:06,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 21:20:06,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 21:20:06,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 21:20:06,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 21:20:06,480 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 21:20:06,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 09:20:06" (1/1) ... [2018-12-08 21:20:06,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e282df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:20:06, skipping insertion in model container [2018-12-08 21:20:06,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 09:20:06" (1/1) ... [2018-12-08 21:20:06,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 21:20:06,511 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 21:20:06,649 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 21:20:06,655 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 21:20:06,712 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 21:20:06,743 INFO L195 MainTranslator]: Completed translation [2018-12-08 21:20:06,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:20:06 WrapperNode [2018-12-08 21:20:06,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 21:20:06,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 21:20:06,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 21:20:06,744 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 21:20:06,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:20:06" (1/1) ... [2018-12-08 21:20:06,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:20:06" (1/1) ... [2018-12-08 21:20:06,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 21:20:06,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 21:20:06,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 21:20:06,772 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 21:20:06,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:20:06" (1/1) ... [2018-12-08 21:20:06,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:20:06" (1/1) ... [2018-12-08 21:20:06,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:20:06" (1/1) ... [2018-12-08 21:20:06,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:20:06" (1/1) ... [2018-12-08 21:20:06,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:20:06" (1/1) ... [2018-12-08 21:20:06,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:20:06" (1/1) ... [2018-12-08 21:20:06,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:20:06" (1/1) ... [2018-12-08 21:20:06,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 21:20:06,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 21:20:06,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 21:20:06,789 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 21:20:06,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:20:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/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 [2018-12-08 21:20:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 21:20:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 21:20:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 21:20:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 21:20:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 21:20:06,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 21:20:07,088 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 21:20:07,088 INFO L280 CfgBuilder]: Removed 12 assue(true) statements. [2018-12-08 21:20:07,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:20:07 BoogieIcfgContainer [2018-12-08 21:20:07,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 21:20:07,089 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-08 21:20:07,089 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-08 21:20:07,096 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-08 21:20:07,096 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:20:07" (1/1) ... [2018-12-08 21:20:07,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 21:20:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 21:20:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 42 states and 47 transitions. [2018-12-08 21:20:07,128 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2018-12-08 21:20:07,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-08 21:20:07,129 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 21:20:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 21:20:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 21:20:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 21:20:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 41 states and 46 transitions. [2018-12-08 21:20:07,232 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-12-08 21:20:07,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-08 21:20:07,233 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 21:20:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 21:20:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 21:20:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 21:20:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 40 states and 45 transitions. [2018-12-08 21:20:07,328 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2018-12-08 21:20:07,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-08 21:20:07,330 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 21:20:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 21:20:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 21:20:07,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 21:20:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 39 states and 44 transitions. [2018-12-08 21:20:07,355 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2018-12-08 21:20:07,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-08 21:20:07,355 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 21:20:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 21:20:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 21:20:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 21:20:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 38 states and 43 transitions. [2018-12-08 21:20:07,398 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-12-08 21:20:07,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-08 21:20:07,398 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 21:20:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 21:20:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 21:20:07,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 21:20:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 39 states and 44 transitions. [2018-12-08 21:20:07,536 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2018-12-08 21:20:07,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-08 21:20:07,537 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 21:20:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 21:20:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 21:20:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 21:20:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 40 states and 46 transitions. [2018-12-08 21:20:07,833 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-12-08 21:20:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-08 21:20:07,833 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 21:20:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 21:20:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 21:20:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 21:20:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 39 states and 45 transitions. [2018-12-08 21:20:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-12-08 21:20:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-08 21:20:07,858 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 21:20:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 21:20:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 21:20:08,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 21:20:08,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 38 states and 44 transitions. [2018-12-08 21:20:08,115 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2018-12-08 21:20:08,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-08 21:20:08,115 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 21:20:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 21:20:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 21:20:08,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 21:20:08,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 42 states and 51 transitions. [2018-12-08 21:20:08,527 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2018-12-08 21:20:08,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-08 21:20:08,527 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 21:20:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 21:20:08,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 21:20:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 21:20:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 46 states and 59 transitions. [2018-12-08 21:20:09,169 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2018-12-08 21:20:09,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-08 21:20:09,170 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 21:20:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 21:20:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 21:20:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 21:20:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 21:20:09,233 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2018-12-08 21:20:09,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.12 09:20:09 ImpRootNode [2018-12-08 21:20:09,258 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-08 21:20:09,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 21:20:09,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 21:20:09,259 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 21:20:09,259 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:20:07" (3/4) ... [2018-12-08 21:20:09,261 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 21:20:09,304 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fd9f6934-aafb-4191-b57b-cebad3ce83bd/bin-2019/ukojak/witness.graphml [2018-12-08 21:20:09,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 21:20:09,305 INFO L168 Benchmark]: Toolchain (without parser) took 2828.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.1 MB). Free memory was 951.7 MB in the beginning and 965.1 MB in the end (delta: -13.4 MB). Peak memory consumption was 193.7 MB. Max. memory is 11.5 GB. [2018-12-08 21:20:09,306 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 21:20:09,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-12-08 21:20:09,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.83 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. [2018-12-08 21:20:09,307 INFO L168 Benchmark]: Boogie Preprocessor took 16.30 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. [2018-12-08 21:20:09,308 INFO L168 Benchmark]: RCFGBuilder took 300.12 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: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 11.5 GB. [2018-12-08 21:20:09,308 INFO L168 Benchmark]: CodeCheck took 2169.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 965.1 MB in the end (delta: 114.3 MB). Peak memory consumption was 185.6 MB. Max. memory is 11.5 GB. [2018-12-08 21:20:09,309 INFO L168 Benchmark]: Witness Printer took 45.52 ms. Allocated memory is still 1.2 GB. Free memory was 965.1 MB in the beginning and 965.1 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-12-08 21:20:09,312 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 1 procedures, 57 locations, 21 error locations. UNSAFE Result, 2.1s OverallTime, 11 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 92 SDtfs, 112 SDslu, 64 SDs, 0 SdLazy, 8400 SolverSat, 4568 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 257 SyntacticMatches, 6 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2167 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 841 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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: 567]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L541] int length = __VERIFIER_nondet_int(); [L542] COND TRUE length < 1 [L543] length = 1 [L545] char* nondetString = (char*) malloc(length * sizeof(char)); [L546] nondetString[length-1] = '\0' [L547] return nondetString; [L565] char* s1 = build_nondet_String(); [L541] int length = __VERIFIER_nondet_int(); [L542] COND FALSE !(length < 1) [L545] char* nondetString = (char*) malloc(length * sizeof(char)); [L546] nondetString[length-1] = '\0' [L547] return nondetString; [L566] char* s2 = build_nondet_String(); [L551] const char *sc1; [L552] const char *s; [L553] int c; [L554] sc1 = s1 [L554] EXPR \read(*sc1) [L554] COND FALSE !(*sc1 != '\0') [L562] return 0; * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 267.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 300.12 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: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 11.5 GB. * CodeCheck took 2169.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 965.1 MB in the end (delta: 114.3 MB). Peak memory consumption was 185.6 MB. Max. memory is 11.5 GB. * Witness Printer took 45.52 ms. Allocated memory is still 1.2 GB. Free memory was 965.1 MB in the beginning and 965.1 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...