./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/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 15362e3354379e86b7768de02eb760f50ed72879 ............................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-01 09:54:05,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-01 09:54:05,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-01 09:54:05,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-01 09:54:05,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-01 09:54:05,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-01 09:54:05,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-01 09:54:05,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-01 09:54:05,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-01 09:54:05,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-01 09:54:05,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-01 09:54:05,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-01 09:54:05,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-01 09:54:05,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-01 09:54:05,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-01 09:54:05,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-01 09:54:05,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-01 09:54:05,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-01 09:54:05,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-01 09:54:05,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-01 09:54:05,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-01 09:54:05,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-01 09:54:05,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-01 09:54:05,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-01 09:54:05,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-01 09:54:05,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-01 09:54:05,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-01 09:54:05,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-01 09:54:05,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-01 09:54:05,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-01 09:54:05,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-01 09:54:05,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-01 09:54:05,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-01 09:54:05,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-01 09:54:05,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-01 09:54:05,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-01 09:54:05,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-01 09:54:05,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-01 09:54:05,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-01 09:54:05,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-01 09:54:05,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-01 09:54:05,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2019-12-01 09:54:05,271 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-01 09:54:05,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-01 09:54:05,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-01 09:54:05,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-01 09:54:05,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-01 09:54:05,273 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-01 09:54:05,273 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-01 09:54:05,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-01 09:54:05,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-01 09:54:05,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-01 09:54:05,273 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-01 09:54:05,273 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-01 09:54:05,273 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-01 09:54:05,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-01 09:54:05,274 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-01 09:54:05,274 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-01 09:54:05,274 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-12-01 09:54:05,274 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-12-01 09:54:05,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-01 09:54:05,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-01 09:54:05,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-12-01 09:54:05,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-01 09:54:05,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-01 09:54:05,275 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-12-01 09:54:05,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-01 09:54:05,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/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 -> 15362e3354379e86b7768de02eb760f50ed72879 [2019-12-01 09:54:05,373 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-01 09:54:05,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-01 09:54:05,384 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-01 09:54:05,385 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-01 09:54:05,385 INFO L275 PluginConnector]: CDTParser initialized [2019-12-01 09:54:05,386 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/ukojak/../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2019-12-01 09:54:05,430 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/ukojak/data/6b72c436c/c1d8483d24c548a19df95598c05a4cf0/FLAG53c1f7c59 [2019-12-01 09:54:05,857 INFO L306 CDTParser]: Found 1 translation units. [2019-12-01 09:54:05,858 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2019-12-01 09:54:05,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/ukojak/data/6b72c436c/c1d8483d24c548a19df95598c05a4cf0/FLAG53c1f7c59 [2019-12-01 09:54:06,208 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/ukojak/data/6b72c436c/c1d8483d24c548a19df95598c05a4cf0 [2019-12-01 09:54:06,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-01 09:54:06,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-01 09:54:06,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-01 09:54:06,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-01 09:54:06,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-01 09:54:06,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 09:54:06" (1/1) ... [2019-12-01 09:54:06,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296938c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:54:06, skipping insertion in model container [2019-12-01 09:54:06,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 09:54:06" (1/1) ... [2019-12-01 09:54:06,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-01 09:54:06,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-01 09:54:06,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 09:54:06,467 INFO L203 MainTranslator]: Completed pre-run [2019-12-01 09:54:06,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 09:54:06,535 INFO L208 MainTranslator]: Completed translation [2019-12-01 09:54:06,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:54:06 WrapperNode [2019-12-01 09:54:06,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-01 09:54:06,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-01 09:54:06,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-01 09:54:06,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-01 09:54:06,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:54:06" (1/1) ... [2019-12-01 09:54:06,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:54:06" (1/1) ... [2019-12-01 09:54:06,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-01 09:54:06,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-01 09:54:06,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-01 09:54:06,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-01 09:54:06,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:54:06" (1/1) ... [2019-12-01 09:54:06,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:54:06" (1/1) ... [2019-12-01 09:54:06,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:54:06" (1/1) ... [2019-12-01 09:54:06,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:54:06" (1/1) ... [2019-12-01 09:54:06,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:54:06" (1/1) ... [2019-12-01 09:54:06,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:54:06" (1/1) ... [2019-12-01 09:54:06,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:54:06" (1/1) ... [2019-12-01 09:54:06,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-01 09:54:06,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-01 09:54:06,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-01 09:54:06,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-01 09:54:06,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:54:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/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 [2019-12-01 09:54:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-01 09:54:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-01 09:54:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-01 09:54:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-01 09:54:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-01 09:54:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-01 09:54:06,856 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-01 09:54:06,856 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-01 09:54:06,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 09:54:06 BoogieIcfgContainer [2019-12-01 09:54:06,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-01 09:54:06,858 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-12-01 09:54:06,858 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-12-01 09:54:06,866 INFO L275 PluginConnector]: CodeCheck initialized [2019-12-01 09:54:06,867 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 09:54:06" (1/1) ... [2019-12-01 09:54:06,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-01 09:54:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 09:54:06,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 22 states and 24 transitions. [2019-12-01 09:54:06,895 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-12-01 09:54:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-01 09:54:06,897 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 09:54:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 09:54:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 09:54:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 09:54:07,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 21 states and 23 transitions. [2019-12-01 09:54:07,014 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-12-01 09:54:07,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-01 09:54:07,014 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 09:54:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 09:54:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 09:54:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 09:54:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2019-12-01 09:54:07,220 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-12-01 09:54:07,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-01 09:54:07,222 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 09:54:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 09:54:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 09:54:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 09:54:07,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 22 states and 26 transitions. [2019-12-01 09:54:07,244 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-12-01 09:54:07,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-01 09:54:07,245 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 09:54:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 09:54:07,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 09:54:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 09:54:07,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 23 states and 28 transitions. [2019-12-01 09:54:07,446 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2019-12-01 09:54:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-01 09:54:07,446 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 09:54:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 09:54:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 09:54:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 09:54:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 24 states and 29 transitions. [2019-12-01 09:54:07,507 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2019-12-01 09:54:07,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-01 09:54:07,507 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 09:54:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 09:54:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 09:54:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 09:54:07,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 25 states and 32 transitions. [2019-12-01 09:54:07,686 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2019-12-01 09:54:07,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-01 09:54:07,687 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 09:54:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 09:54:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 09:54:08,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 09:54:08,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 28 states and 39 transitions. [2019-12-01 09:54:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2019-12-01 09:54:08,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-01 09:54:08,272 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 09:54:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 09:54:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 09:54:08,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 09:54:08,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 29 states and 41 transitions. [2019-12-01 09:54:08,565 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2019-12-01 09:54:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-01 09:54:08,566 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 09:54:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 09:54:08,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 09:54:09,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 09:54:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 32 states and 47 transitions. [2019-12-01 09:54:09,251 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 47 transitions. [2019-12-01 09:54:09,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-01 09:54:09,252 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 09:54:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 09:54:09,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 09:54:09,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 09:54:09,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 25 states and 31 transitions. [2019-12-01 09:54:09,646 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2019-12-01 09:54:09,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-01 09:54:09,647 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 09:54:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 09:54:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 09:54:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 09:54:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 29 states and 36 transitions. [2019-12-01 09:54:10,436 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2019-12-01 09:54:10,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-01 09:54:10,437 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 09:54:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 09:54:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 09:54:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 09:54:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 09:54:10,525 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 12 iterations. [2019-12-01 09:54:10,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 09:54:10 ImpRootNode [2019-12-01 09:54:10,552 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-12-01 09:54:10,553 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-01 09:54:10,553 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-01 09:54:10,553 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-01 09:54:10,554 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 09:54:06" (3/4) ... [2019-12-01 09:54:10,556 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-01 09:54:10,592 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fbad8617-e5fe-444f-bbbd-36e15390cc39/bin/ukojak/witness.graphml [2019-12-01 09:54:10,592 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-01 09:54:10,594 INFO L168 Benchmark]: Toolchain (without parser) took 4380.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 940.8 MB in the beginning and 974.3 MB in the end (delta: -33.5 MB). Peak memory consumption was 110.2 MB. Max. memory is 11.5 GB. [2019-12-01 09:54:10,594 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 09:54:10,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -141.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-12-01 09:54:10,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.33 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. [2019-12-01 09:54:10,595 INFO L168 Benchmark]: Boogie Preprocessor took 18.11 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-01 09:54:10,596 INFO L168 Benchmark]: RCFGBuilder took 273.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2019-12-01 09:54:10,596 INFO L168 Benchmark]: CodeCheck took 3694.46 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 44.0 MB). Free memory was 1.0 GB in the beginning and 976.4 MB in the end (delta: 72.5 MB). Peak memory consumption was 116.6 MB. Max. memory is 11.5 GB. [2019-12-01 09:54:10,597 INFO L168 Benchmark]: Witness Printer took 39.42 ms. Allocated memory is still 1.2 GB. Free memory was 976.4 MB in the beginning and 974.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-12-01 09:54:10,599 INFO L335 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, 22 locations, 10 error locations. Result: UNSAFE, OverallTime: 3.6s, OverallIterations: 12, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 4100 SDtfs, 5536 SDslu, 2564 SDs, 0 SdLazy, 26922 SolverSat, 9630 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 336 SyntacticMatches, 10 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3477 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 1421 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 7/10 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 532]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int length = __VERIFIER_nondet_int(); [L516] COND FALSE !(length < 1) [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; [L521] COND TRUE i < length - 1 [L523] nondetString[i] = __VERIFIER_nondet_char() [L521] i++ [L521] COND FALSE !(i < length - 1) [L526] nondetString[length-1] = '\0' [L527] return nondetString; [L537] char* p = build_nondet_String(); [L531] const char *p = s; [L532] EXPR \read(*p) [L532] COND TRUE *p != '\0' [L533] p = p+2 [L532] \read(*p) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -141.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.33 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. * Boogie Preprocessor took 18.11 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 273.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * CodeCheck took 3694.46 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 44.0 MB). Free memory was 1.0 GB in the beginning and 976.4 MB in the end (delta: 72.5 MB). Peak memory consumption was 116.6 MB. Max. memory is 11.5 GB. * Witness Printer took 39.42 ms. Allocated memory is still 1.2 GB. Free memory was 976.4 MB in the beginning and 974.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...