./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrchr_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_adc8d60c-a27c-4717-8a96-1df8ea667129/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_adc8d60c-a27c-4717-8a96-1df8ea667129/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_adc8d60c-a27c-4717-8a96-1df8ea667129/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_adc8d60c-a27c-4717-8a96-1df8ea667129/bin-2019/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrchr_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_adc8d60c-a27c-4717-8a96-1df8ea667129/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_adc8d60c-a27c-4717-8a96-1df8ea667129/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 b1c981e5c0ba7a15ac143c5240d22ecf11476d0a .................................................................................................................................................................................................................................................................................. 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 19:58:32,961 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 19:58:32,962 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 19:58:32,968 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 19:58:32,969 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 19:58:32,969 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 19:58:32,970 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 19:58:32,971 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 19:58:32,971 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 19:58:32,972 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 19:58:32,972 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 19:58:32,973 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 19:58:32,973 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 19:58:32,974 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 19:58:32,974 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 19:58:32,975 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 19:58:32,975 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 19:58:32,976 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 19:58:32,977 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 19:58:32,978 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 19:58:32,978 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 19:58:32,979 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 19:58:32,980 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 19:58:32,980 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 19:58:32,980 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 19:58:32,981 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 19:58:32,981 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 19:58:32,982 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 19:58:32,982 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 19:58:32,983 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 19:58:32,983 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 19:58:32,983 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 19:58:32,983 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 19:58:32,983 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 19:58:32,984 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 19:58:32,984 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 19:58:32,984 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_adc8d60c-a27c-4717-8a96-1df8ea667129/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2018-12-08 19:58:32,991 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 19:58:32,992 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 19:58:32,992 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 19:58:32,992 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 19:58:32,993 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 19:58:32,993 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 19:58:32,993 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 19:58:32,993 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 19:58:32,993 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 19:58:32,993 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 19:58:32,993 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-08 19:58:32,993 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-08 19:58:32,993 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-08 19:58:32,993 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 19:58:32,993 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 19:58:32,994 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 19:58:32,994 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-08 19:58:32,994 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-08 19:58:32,994 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 19:58:32,994 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 19:58:32,994 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-08 19:58:32,994 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 19:58:32,994 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 19:58:32,994 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-08 19:58:32,994 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 19:58:32,995 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_adc8d60c-a27c-4717-8a96-1df8ea667129/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 -> b1c981e5c0ba7a15ac143c5240d22ecf11476d0a [2018-12-08 19:58:33,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 19:58:33,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 19:58:33,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 19:58:33,024 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 19:58:33,024 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 19:58:33,025 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_adc8d60c-a27c-4717-8a96-1df8ea667129/bin-2019/ukojak/../../sv-benchmarks/c/array-memsafety/cstrchr_unsafe_false-valid-deref.i [2018-12-08 19:58:33,071 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_adc8d60c-a27c-4717-8a96-1df8ea667129/bin-2019/ukojak/data/0865c30b4/dbbc5e17ed474427b184b556e26878eb/FLAG4d092619e [2018-12-08 19:58:33,480 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 19:58:33,481 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_adc8d60c-a27c-4717-8a96-1df8ea667129/sv-benchmarks/c/array-memsafety/cstrchr_unsafe_false-valid-deref.i [2018-12-08 19:58:33,486 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_adc8d60c-a27c-4717-8a96-1df8ea667129/bin-2019/ukojak/data/0865c30b4/dbbc5e17ed474427b184b556e26878eb/FLAG4d092619e [2018-12-08 19:58:33,494 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_adc8d60c-a27c-4717-8a96-1df8ea667129/bin-2019/ukojak/data/0865c30b4/dbbc5e17ed474427b184b556e26878eb [2018-12-08 19:58:33,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 19:58:33,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 19:58:33,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 19:58:33,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 19:58:33,499 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 19:58:33,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:58:33" (1/1) ... [2018-12-08 19:58:33,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7014c445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:58:33, skipping insertion in model container [2018-12-08 19:58:33,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:58:33" (1/1) ... [2018-12-08 19:58:33,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 19:58:33,522 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 19:58:33,660 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:58:33,703 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 19:58:33,725 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:58:33,747 INFO L195 MainTranslator]: Completed translation [2018-12-08 19:58:33,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:58:33 WrapperNode [2018-12-08 19:58:33,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 19:58:33,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 19:58:33,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 19:58:33,748 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 19:58:33,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:58:33" (1/1) ... [2018-12-08 19:58:33,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:58:33" (1/1) ... [2018-12-08 19:58:33,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 19:58:33,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 19:58:33,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 19:58:33,776 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 19:58:33,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:58:33" (1/1) ... [2018-12-08 19:58:33,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:58:33" (1/1) ... [2018-12-08 19:58:33,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:58:33" (1/1) ... [2018-12-08 19:58:33,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:58:33" (1/1) ... [2018-12-08 19:58:33,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:58:33" (1/1) ... [2018-12-08 19:58:33,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:58:33" (1/1) ... [2018-12-08 19:58:33,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:58:33" (1/1) ... [2018-12-08 19:58:33,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 19:58:33,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 19:58:33,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 19:58:33,795 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 19:58:33,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:58:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc8d60c-a27c-4717-8a96-1df8ea667129/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 19:58:33,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 19:58:33,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 19:58:33,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 19:58:33,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 19:58:33,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 19:58:33,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 19:58:34,030 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 19:58:34,030 INFO L280 CfgBuilder]: Removed 9 assue(true) statements. [2018-12-08 19:58:34,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:58:34 BoogieIcfgContainer [2018-12-08 19:58:34,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 19:58:34,030 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-08 19:58:34,030 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-08 19:58:34,037 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-08 19:58:34,037 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:58:34" (1/1) ... [2018-12-08 19:58:34,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:58:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 19:58:34,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 25 states and 27 transitions. [2018-12-08 19:58:34,065 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-12-08 19:58:34,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-08 19:58:34,068 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 19:58:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:58:34,152 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 19:58:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 19:58:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 24 states and 26 transitions. [2018-12-08 19:58:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-12-08 19:58:34,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-08 19:58:34,168 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 19:58:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:58:34,198 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 19:58:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 19:58:34,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 23 states and 25 transitions. [2018-12-08 19:58:34,273 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-12-08 19:58:34,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-08 19:58:34,273 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 19:58:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:58:34,297 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 19:58:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 19:58:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 24 states and 26 transitions. [2018-12-08 19:58:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-12-08 19:58:34,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-08 19:58:34,316 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 19:58:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:58:34,365 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 19:58:34,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 19:58:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 25 states and 28 transitions. [2018-12-08 19:58:34,447 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-12-08 19:58:34,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-08 19:58:34,448 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 19:58:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:58:34,458 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 19:58:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 19:58:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 24 states and 27 transitions. [2018-12-08 19:58:34,466 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-12-08 19:58:34,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-08 19:58:34,466 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 19:58:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:58:34,523 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 19:58:34,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 19:58:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 23 states and 26 transitions. [2018-12-08 19:58:34,633 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2018-12-08 19:58:34,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-08 19:58:34,634 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 19:58:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:58:34,647 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 19:58:34,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 19:58:34,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 20 states and 22 transitions. [2018-12-08 19:58:34,660 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-12-08 19:58:34,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-08 19:58:34,660 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 19:58:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:58:34,672 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 19:58:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 19:58:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 19 states and 20 transitions. [2018-12-08 19:58:34,683 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-12-08 19:58:34,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-08 19:58:34,684 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 19:58:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:58:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:58:34,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 19:58:34,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 20 states and 21 transitions. [2018-12-08 19:58:34,815 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-12-08 19:58:34,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-08 19:58:34,816 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 19:58:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:58:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:58:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:58:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:58:34,869 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 10 iterations. [2018-12-08 19:58:34,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.12 07:58:34 ImpRootNode [2018-12-08 19:58:34,891 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-08 19:58:34,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 19:58:34,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 19:58:34,892 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 19:58:34,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:58:34" (3/4) ... [2018-12-08 19:58:34,894 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 19:58:34,924 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_adc8d60c-a27c-4717-8a96-1df8ea667129/bin-2019/ukojak/witness.graphml [2018-12-08 19:58:34,924 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 19:58:34,925 INFO L168 Benchmark]: Toolchain (without parser) took 1429.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 956.0 MB in the beginning and 922.3 MB in the end (delta: 33.7 MB). Peak memory consumption was 167.9 MB. Max. memory is 11.5 GB. [2018-12-08 19:58:34,926 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:58:34,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -161.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-12-08 19:58:34,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.57 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 19:58:34,927 INFO L168 Benchmark]: Boogie Preprocessor took 18.15 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 19:58:34,927 INFO L168 Benchmark]: RCFGBuilder took 235.55 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. [2018-12-08 19:58:34,927 INFO L168 Benchmark]: CodeCheck took 860.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 922.3 MB in the end (delta: 161.8 MB). Peak memory consumption was 161.8 MB. Max. memory is 11.5 GB. [2018-12-08 19:58:34,928 INFO L168 Benchmark]: Witness Printer took 33.06 ms. Allocated memory is still 1.2 GB. Free memory is still 922.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:58:34,929 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, 37 locations, 13 error locations. UNSAFE Result, 0.8s OverallTime, 10 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 176 SDtfs, 244 SDslu, 192 SDs, 0 SdLazy, 4194 SolverSat, 2090 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 298 GetRequests, 259 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 589 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 1/1 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: 557]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [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; [L556] char* s = build_nondet_String(); [L551] EXPR \read(*s) [L551] *s != '\0' && *s != (char)c [L551] COND FALSE !(*s != '\0' && *s != (char)c) [L553] EXPR \read(*s) [L553] EXPR (*s == c) ? (char *) s : 0 [L553] return ( (*s == c) ? (char *) s : 0 ); * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 250.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -161.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.57 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 18.15 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 235.55 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. * CodeCheck took 860.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 922.3 MB in the end (delta: 161.8 MB). Peak memory consumption was 161.8 MB. Max. memory is 11.5 GB. * Witness Printer took 33.06 ms. Allocated memory is still 1.2 GB. Free memory is still 922.3 MB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...