./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca_true-valid-memsafety_true-termination.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_e4988528-250a-4b0a-81e7-f4753e58b36a/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e4988528-250a-4b0a-81e7-f4753e58b36a/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e4988528-250a-4b0a-81e7-f4753e58b36a/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e4988528-250a-4b0a-81e7-f4753e58b36a/bin-2019/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e4988528-250a-4b0a-81e7-f4753e58b36a/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e4988528-250a-4b0a-81e7-f4753e58b36a/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 1f736ad3d73bcf44f292b11858e0429161a038cf ......................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 15:59:17,863 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 15:59:17,864 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 15:59:17,870 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 15:59:17,870 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 15:59:17,871 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 15:59:17,871 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 15:59:17,872 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 15:59:17,873 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 15:59:17,873 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 15:59:17,874 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 15:59:17,874 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 15:59:17,874 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 15:59:17,875 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 15:59:17,875 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 15:59:17,876 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 15:59:17,876 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 15:59:17,877 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 15:59:17,878 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 15:59:17,879 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 15:59:17,879 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 15:59:17,880 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 15:59:17,881 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 15:59:17,881 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 15:59:17,881 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 15:59:17,882 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 15:59:17,882 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 15:59:17,883 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 15:59:17,883 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 15:59:17,883 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 15:59:17,884 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 15:59:17,884 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 15:59:17,884 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 15:59:17,884 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 15:59:17,885 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 15:59:17,885 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 15:59:17,885 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e4988528-250a-4b0a-81e7-f4753e58b36a/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2018-12-09 15:59:17,892 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 15:59:17,893 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 15:59:17,893 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 15:59:17,893 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 15:59:17,894 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 15:59:17,894 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 15:59:17,894 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 15:59:17,894 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 15:59:17,894 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 15:59:17,894 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 15:59:17,894 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 15:59:17,895 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 15:59:17,895 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 15:59:17,895 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 15:59:17,895 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 15:59:17,895 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 15:59:17,895 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-09 15:59:17,895 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-09 15:59:17,895 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 15:59:17,896 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 15:59:17,896 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-09 15:59:17,896 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 15:59:17,896 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 15:59:17,896 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-09 15:59:17,896 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 15:59:17,896 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_e4988528-250a-4b0a-81e7-f4753e58b36a/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 -> 1f736ad3d73bcf44f292b11858e0429161a038cf [2018-12-09 15:59:17,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 15:59:17,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 15:59:17,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 15:59:17,928 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 15:59:17,928 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 15:59:17,929 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e4988528-250a-4b0a-81e7-f4753e58b36a/bin-2019/ukojak/../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca_true-valid-memsafety_true-termination.i [2018-12-09 15:59:17,968 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e4988528-250a-4b0a-81e7-f4753e58b36a/bin-2019/ukojak/data/45cc9d774/261027ebfc414e21a62dd32d74bec8f2/FLAGbfd4fe2e2 [2018-12-09 15:59:18,308 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 15:59:18,308 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e4988528-250a-4b0a-81e7-f4753e58b36a/sv-benchmarks/c/array-memsafety/rec_strlen-alloca_true-valid-memsafety_true-termination.i [2018-12-09 15:59:18,315 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e4988528-250a-4b0a-81e7-f4753e58b36a/bin-2019/ukojak/data/45cc9d774/261027ebfc414e21a62dd32d74bec8f2/FLAGbfd4fe2e2 [2018-12-09 15:59:18,700 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e4988528-250a-4b0a-81e7-f4753e58b36a/bin-2019/ukojak/data/45cc9d774/261027ebfc414e21a62dd32d74bec8f2 [2018-12-09 15:59:18,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 15:59:18,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 15:59:18,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 15:59:18,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 15:59:18,706 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 15:59:18,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:59:18" (1/1) ... [2018-12-09 15:59:18,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e48869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:59:18, skipping insertion in model container [2018-12-09 15:59:18,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:59:18" (1/1) ... [2018-12-09 15:59:18,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 15:59:18,738 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 15:59:18,901 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:59:18,907 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 15:59:18,962 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:59:18,981 INFO L195 MainTranslator]: Completed translation [2018-12-09 15:59:18,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:59:18 WrapperNode [2018-12-09 15:59:18,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 15:59:18,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 15:59:18,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 15:59:18,982 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 15:59:18,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:59:18" (1/1) ... [2018-12-09 15:59:18,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:59:18" (1/1) ... [2018-12-09 15:59:19,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 15:59:19,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 15:59:19,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 15:59:19,004 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 15:59:19,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:59:18" (1/1) ... [2018-12-09 15:59:19,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:59:18" (1/1) ... [2018-12-09 15:59:19,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:59:18" (1/1) ... [2018-12-09 15:59:19,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:59:18" (1/1) ... [2018-12-09 15:59:19,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:59:18" (1/1) ... [2018-12-09 15:59:19,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:59:18" (1/1) ... [2018-12-09 15:59:19,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:59:18" (1/1) ... [2018-12-09 15:59:19,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 15:59:19,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 15:59:19,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 15:59:19,016 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 15:59:19,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:59:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e4988528-250a-4b0a-81e7-f4753e58b36a/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 [2018-12-09 15:59:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 15:59:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 15:59:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 15:59:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 15:59:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure strlen_rec [2018-12-09 15:59:19,047 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen_rec [2018-12-09 15:59:19,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 15:59:19,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 15:59:19,178 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 15:59:19,178 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 15:59:19,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:59:19 BoogieIcfgContainer [2018-12-09 15:59:19,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 15:59:19,179 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-09 15:59:19,179 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-09 15:59:19,185 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-09 15:59:19,185 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:59:19" (1/1) ... [2018-12-09 15:59:19,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:59:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 15:59:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 18 states and 19 transitions. [2018-12-09 15:59:19,213 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-12-09 15:59:19,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-09 15:59:19,214 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 15:59:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:59:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 15:59:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 17 states and 18 transitions. [2018-12-09 15:59:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-12-09 15:59:19,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-09 15:59:19,321 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 15:59:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:59:19,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 15:59:19,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 16 states and 17 transitions. [2018-12-09 15:59:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-12-09 15:59:19,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-09 15:59:19,454 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 15:59:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:59:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 15:59:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 20 transitions. [2018-12-09 15:59:19,520 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-12-09 15:59:19,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-09 15:59:19,520 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 15:59:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:59:19,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 15:59:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 20 states and 23 transitions. [2018-12-09 15:59:19,867 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2018-12-09 15:59:19,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 15:59:19,871 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 15:59:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:59:20,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 15:59:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 33 transitions. [2018-12-09 15:59:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2018-12-09 15:59:20,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 15:59:20,968 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 15:59:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:59:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 15:59:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 32 transitions. [2018-12-09 15:59:21,200 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2018-12-09 15:59:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 15:59:21,201 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 15:59:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:59:21,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 15:59:21,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 25 states and 31 transitions. [2018-12-09 15:59:21,806 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2018-12-09 15:59:21,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 15:59:21,806 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 15:59:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:59:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 15:59:27,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 33 states and 45 transitions. [2018-12-09 15:59:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2018-12-09 15:59:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 15:59:27,160 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 15:59:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:27,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 15:59:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 15:59:27,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 33 states and 44 transitions. [2018-12-09 15:59:27,543 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2018-12-09 15:59:27,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 15:59:27,543 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 15:59:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-12-09 15:59:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 15:59:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 30 states and 40 transitions. [2018-12-09 15:59:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2018-12-09 15:59:28,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 15:59:28,026 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 15:59:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 15:59:32,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 15:59:32,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 20 states and 24 transitions. [2018-12-09 15:59:32,026 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2018-12-09 15:59:32,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 15:59:32,026 WARN L428 CodeCheckObserver]: This Program is SAFE, Check terminated with 12 iterations. [2018-12-09 15:59:32,032 INFO L779 CodeCheckObserver]: All specifications hold 5 specifications checked. All of them hold [2018-12-09 15:59:32,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.12 03:59:32 ImpRootNode [2018-12-09 15:59:32,200 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-09 15:59:32,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 15:59:32,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 15:59:32,201 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 15:59:32,201 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:59:19" (3/4) ... [2018-12-09 15:59:32,203 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 15:59:32,207 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure strlen_rec [2018-12-09 15:59:32,209 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-12-09 15:59:32,209 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-09 15:59:32,209 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-09 15:59:32,232 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e4988528-250a-4b0a-81e7-f4753e58b36a/bin-2019/ukojak/witness.graphml [2018-12-09 15:59:32,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 15:59:32,233 INFO L168 Benchmark]: Toolchain (without parser) took 13530.95 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 366.0 MB). Free memory was 950.6 MB in the beginning and 809.6 MB in the end (delta: 141.0 MB). Peak memory consumption was 507.0 MB. Max. memory is 11.5 GB. [2018-12-09 15:59:32,234 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-12-09 15:59:32,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -164.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-12-09 15:59:32,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.46 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-09 15:59:32,235 INFO L168 Benchmark]: Boogie Preprocessor took 11.73 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. [2018-12-09 15:59:32,235 INFO L168 Benchmark]: RCFGBuilder took 162.57 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: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2018-12-09 15:59:32,235 INFO L168 Benchmark]: CodeCheck took 13021.68 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 237.5 MB). Free memory was 1.1 GB in the beginning and 809.6 MB in the end (delta: 280.5 MB). Peak memory consumption was 518.0 MB. Max. memory is 11.5 GB. [2018-12-09 15:59:32,236 INFO L168 Benchmark]: Witness Printer took 32.05 ms. Allocated memory is still 1.4 GB. Free memory is still 809.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 15:59:32,238 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 2 procedures, 22 locations, 5 error locations. SAFE Result, 12.8s OverallTime, 12 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3440 SDtfs, 1498 SDslu, 32 SDs, 0 SdLazy, 28062 SolverSat, 12692 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 949 GetRequests, 728 SyntacticMatches, 15 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15794 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 9820 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 34/56 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 - PositiveResult [Line: 552]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold * 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 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -164.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.46 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.73 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 162.57 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: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * CodeCheck took 13021.68 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 237.5 MB). Free memory was 1.1 GB in the beginning and 809.6 MB in the end (delta: 280.5 MB). Peak memory consumption was 518.0 MB. Max. memory is 11.5 GB. * Witness Printer took 32.05 ms. Allocated memory is still 1.4 GB. Free memory is still 809.6 MB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...