./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_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_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/bin-2019/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/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 860f0cef2a2bc5e57220324712ded9016daf6ef5 ........................................................................................................................................................................................................................................................................ 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 [2018-12-02 06:14:15,091 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 06:14:15,092 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 06:14:15,098 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 06:14:15,098 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 06:14:15,099 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 06:14:15,099 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 06:14:15,100 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 06:14:15,101 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 06:14:15,101 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 06:14:15,102 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 06:14:15,102 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 06:14:15,102 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 06:14:15,103 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 06:14:15,103 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 06:14:15,104 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 06:14:15,104 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 06:14:15,105 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 06:14:15,106 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 06:14:15,106 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 06:14:15,107 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 06:14:15,107 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 06:14:15,108 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 06:14:15,108 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 06:14:15,109 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 06:14:15,109 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 06:14:15,109 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 06:14:15,110 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 06:14:15,110 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 06:14:15,111 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 06:14:15,111 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 06:14:15,111 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 06:14:15,111 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 06:14:15,111 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 06:14:15,112 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 06:14:15,112 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 06:14:15,112 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2018-12-02 06:14:15,119 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 06:14:15,119 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 06:14:15,120 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 06:14:15,120 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 06:14:15,120 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 06:14:15,120 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 06:14:15,121 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 06:14:15,121 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 06:14:15,121 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 06:14:15,121 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 06:14:15,121 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 06:14:15,121 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 06:14:15,121 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 06:14:15,121 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 06:14:15,121 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 06:14:15,121 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 06:14:15,121 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-02 06:14:15,121 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-02 06:14:15,122 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 06:14:15,122 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 06:14:15,122 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-02 06:14:15,122 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 06:14:15,122 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 06:14:15,122 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-02 06:14:15,122 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 06:14:15,122 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_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/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 -> 860f0cef2a2bc5e57220324712ded9016daf6ef5 [2018-12-02 06:14:15,139 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 06:14:15,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 06:14:15,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 06:14:15,149 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 06:14:15,150 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 06:14:15,150 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/bin-2019/ukojak/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2018-12-02 06:14:15,185 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/bin-2019/ukojak/data/d57a495af/0ea0793cae35490781ff974775daab89/FLAGdf6448e98 [2018-12-02 06:14:15,540 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 06:14:15,540 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2018-12-02 06:14:15,545 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/bin-2019/ukojak/data/d57a495af/0ea0793cae35490781ff974775daab89/FLAGdf6448e98 [2018-12-02 06:14:15,925 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/bin-2019/ukojak/data/d57a495af/0ea0793cae35490781ff974775daab89 [2018-12-02 06:14:15,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 06:14:15,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 06:14:15,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 06:14:15,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 06:14:15,932 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 06:14:15,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:14:15" (1/1) ... [2018-12-02 06:14:15,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eda5476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:15, skipping insertion in model container [2018-12-02 06:14:15,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:14:15" (1/1) ... [2018-12-02 06:14:15,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 06:14:15,961 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 06:14:16,112 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:14:16,119 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 06:14:16,179 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:14:16,198 INFO L195 MainTranslator]: Completed translation [2018-12-02 06:14:16,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:16 WrapperNode [2018-12-02 06:14:16,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 06:14:16,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 06:14:16,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 06:14:16,199 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 06:14:16,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:16" (1/1) ... [2018-12-02 06:14:16,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:16" (1/1) ... [2018-12-02 06:14:16,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 06:14:16,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 06:14:16,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 06:14:16,227 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 06:14:16,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:16" (1/1) ... [2018-12-02 06:14:16,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:16" (1/1) ... [2018-12-02 06:14:16,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:16" (1/1) ... [2018-12-02 06:14:16,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:16" (1/1) ... [2018-12-02 06:14:16,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:16" (1/1) ... [2018-12-02 06:14:16,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:16" (1/1) ... [2018-12-02 06:14:16,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:16" (1/1) ... [2018-12-02 06:14:16,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 06:14:16,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 06:14:16,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 06:14:16,245 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 06:14:16,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/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 [2018-12-02 06:14:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 06:14:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 06:14:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 06:14:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 06:14:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 06:14:16,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 06:14:16,515 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 06:14:16,516 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-02 06:14:16,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:14:16 BoogieIcfgContainer [2018-12-02 06:14:16,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 06:14:16,516 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-02 06:14:16,516 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-02 06:14:16,523 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-02 06:14:16,523 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:14:16" (1/1) ... [2018-12-02 06:14:16,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:14:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 06:14:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 40 states and 44 transitions. [2018-12-02 06:14:16,556 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-12-02 06:14:16,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-02 06:14:16,557 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 06:14:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:14:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:14:16,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 06:14:16,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 42 states and 48 transitions. [2018-12-02 06:14:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2018-12-02 06:14:16,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-02 06:14:16,669 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 06:14:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:14:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:14:16,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 06:14:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 44 states and 53 transitions. [2018-12-02 06:14:16,847 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 06:14:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-02 06:14:16,849 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 06:14:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:14:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:14:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 06:14:16,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 45 states and 54 transitions. [2018-12-02 06:14:16,869 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2018-12-02 06:14:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-02 06:14:16,869 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 06:14:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:14:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:14:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 06:14:17,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 46 states and 55 transitions. [2018-12-02 06:14:17,005 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2018-12-02 06:14:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-02 06:14:17,005 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 06:14:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:14:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:14:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 06:14:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 45 states and 54 transitions. [2018-12-02 06:14:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2018-12-02 06:14:17,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-02 06:14:17,059 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 06:14:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:14:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:14:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 06:14:17,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 44 states and 53 transitions. [2018-12-02 06:14:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 06:14:17,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-02 06:14:17,146 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 06:14:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:14:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:14:17,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 06:14:17,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 43 states and 52 transitions. [2018-12-02 06:14:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-02 06:14:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-02 06:14:17,165 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 06:14:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:14:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:14:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 06:14:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 42 states and 51 transitions. [2018-12-02 06:14:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2018-12-02 06:14:17,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-02 06:14:17,229 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 06:14:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 06:14:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 06:14:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 06:14:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 06:14:17,277 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 9 iterations. [2018-12-02 06:14:17,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 06:14:17 ImpRootNode [2018-12-02 06:14:17,293 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-02 06:14:17,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 06:14:17,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 06:14:17,294 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 06:14:17,294 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:14:16" (3/4) ... [2018-12-02 06:14:17,296 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 06:14:17,322 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cd927ff8-1ad5-4c87-8c3c-ffcb31544633/bin-2019/ukojak/witness.graphml [2018-12-02 06:14:17,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 06:14:17,323 INFO L168 Benchmark]: Toolchain (without parser) took 1394.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 950.6 MB in the beginning and 933.6 MB in the end (delta: 17.0 MB). Peak memory consumption was 130.8 MB. Max. memory is 11.5 GB. [2018-12-02 06:14:17,324 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:14:17,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -151.6 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-12-02 06:14:17,325 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.34 ms. Allocated memory is still 1.1 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. [2018-12-02 06:14:17,325 INFO L168 Benchmark]: Boogie Preprocessor took 18.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:14:17,325 INFO L168 Benchmark]: RCFGBuilder took 270.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 11.5 GB. [2018-12-02 06:14:17,326 INFO L168 Benchmark]: CodeCheck took 777.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 936.3 MB in the end (delta: 127.4 MB). Peak memory consumption was 127.4 MB. Max. memory is 11.5 GB. [2018-12-02 06:14:17,326 INFO L168 Benchmark]: Witness Printer took 28.75 ms. Allocated memory is still 1.1 GB. Free memory was 936.3 MB in the beginning and 933.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 06:14:17,329 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, 53 locations, 21 error locations. UNSAFE Result, 0.7s OverallTime, 9 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 592 SDtfs, 566 SDslu, 640 SDs, 0 SdLazy, 3002 SolverSat, 1036 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 215 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 704 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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: 549]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L541] int i, j, tmp; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 [L544] COND FALSE !(length % 2 == 0) [L545] int *arr = __builtin_alloca (length*sizeof(int)); [L546] i=0 [L546] COND TRUE i