./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/tree-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/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 044ef52817dc7382960a6f0241b98ee90ba1b40d ............................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-10-22 10:12:48,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 10:12:48,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 10:12:48,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 10:12:48,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 10:12:48,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 10:12:48,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 10:12:48,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 10:12:48,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 10:12:48,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 10:12:48,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 10:12:48,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 10:12:48,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 10:12:48,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 10:12:48,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 10:12:48,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 10:12:48,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 10:12:48,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 10:12:48,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 10:12:48,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 10:12:48,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 10:12:48,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 10:12:48,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 10:12:48,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 10:12:48,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 10:12:48,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 10:12:48,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 10:12:48,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 10:12:48,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 10:12:48,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 10:12:48,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 10:12:48,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 10:12:48,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 10:12:48,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 10:12:48,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 10:12:48,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 10:12:48,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 10:12:48,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 10:12:48,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 10:12:48,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 10:12:48,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 10:12:48,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2019-10-22 10:12:48,337 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 10:12:48,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 10:12:48,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 10:12:48,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 10:12:48,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 10:12:48,338 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 10:12:48,339 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 10:12:48,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 10:12:48,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 10:12:48,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 10:12:48,339 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 10:12:48,339 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 10:12:48,340 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 10:12:48,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 10:12:48,340 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 10:12:48,340 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 10:12:48,340 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-10-22 10:12:48,340 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-10-22 10:12:48,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 10:12:48,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 10:12:48,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-10-22 10:12:48,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 10:12:48,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 10:12:48,342 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-10-22 10:12:48,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 10:12:48,342 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/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/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 -> 044ef52817dc7382960a6f0241b98ee90ba1b40d [2019-10-22 10:12:48,370 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 10:12:48,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 10:12:48,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 10:12:48,387 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 10:12:48,387 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 10:12:48,388 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/bin/ukojak/../../sv-benchmarks/c/heap-manipulation/tree-1.i [2019-10-22 10:12:48,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/bin/ukojak/data/dfa3c307f/9899ab916d304e0dbb6158454a27b2a6/FLAG75f0df698 [2019-10-22 10:12:48,908 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 10:12:48,909 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/sv-benchmarks/c/heap-manipulation/tree-1.i [2019-10-22 10:12:48,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/bin/ukojak/data/dfa3c307f/9899ab916d304e0dbb6158454a27b2a6/FLAG75f0df698 [2019-10-22 10:12:48,931 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/bin/ukojak/data/dfa3c307f/9899ab916d304e0dbb6158454a27b2a6 [2019-10-22 10:12:48,933 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 10:12:48,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 10:12:48,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 10:12:48,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 10:12:48,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 10:12:48,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:12:48" (1/1) ... [2019-10-22 10:12:48,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290605e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:48, skipping insertion in model container [2019-10-22 10:12:48,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:12:48" (1/1) ... [2019-10-22 10:12:48,949 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 10:12:48,984 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 10:12:49,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:12:49,337 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 10:12:49,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:12:49,437 INFO L192 MainTranslator]: Completed translation [2019-10-22 10:12:49,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:49 WrapperNode [2019-10-22 10:12:49,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 10:12:49,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 10:12:49,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 10:12:49,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 10:12:49,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:49" (1/1) ... [2019-10-22 10:12:49,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:49" (1/1) ... [2019-10-22 10:12:49,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 10:12:49,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 10:12:49,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 10:12:49,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 10:12:49,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:49" (1/1) ... [2019-10-22 10:12:49,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:49" (1/1) ... [2019-10-22 10:12:49,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:49" (1/1) ... [2019-10-22 10:12:49,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:49" (1/1) ... [2019-10-22 10:12:49,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:49" (1/1) ... [2019-10-22 10:12:49,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:49" (1/1) ... [2019-10-22 10:12:49,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:49" (1/1) ... [2019-10-22 10:12:49,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 10:12:49,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 10:12:49,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 10:12:49,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 10:12:49,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/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 [2019-10-22 10:12:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 10:12:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 10:12:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 10:12:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 10:12:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 10:12:49,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 10:12:49,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 10:12:49,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 10:12:50,284 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 10:12:50,284 INFO L284 CfgBuilder]: Removed 27 assume(true) statements. [2019-10-22 10:12:50,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:12:50 BoogieIcfgContainer [2019-10-22 10:12:50,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 10:12:50,286 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-10-22 10:12:50,286 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-10-22 10:12:50,299 INFO L275 PluginConnector]: CodeCheck initialized [2019-10-22 10:12:50,300 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:12:50" (1/1) ... [2019-10-22 10:12:50,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 10:12:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 121 states and 138 transitions. [2019-10-22 10:12:50,349 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2019-10-22 10:12:50,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 10:12:50,351 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:12:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 121 states and 137 transitions. [2019-10-22 10:12:50,443 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 137 transitions. [2019-10-22 10:12:50,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 10:12:50,446 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:50,509 WARN L489 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2019-10-22 10:12:50,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 22.10 10:12:50 ImpRootNode [2019-10-22 10:12:50,536 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-10-22 10:12:50,536 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 10:12:50,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 10:12:50,537 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 10:12:50,537 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:12:50" (3/4) ... [2019-10-22 10:12:50,540 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 10:12:50,580 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_447c606c-11d1-49f7-92aa-32194a9f1bff/bin/ukojak/witness.graphml [2019-10-22 10:12:50,580 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 10:12:50,583 INFO L168 Benchmark]: Toolchain (without parser) took 1647.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 942.1 MB in the beginning and 1.0 GB in the end (delta: -59.4 MB). Peak memory consumption was 61.2 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:50,584 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 10:12:50,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 942.1 MB in the beginning and 1.1 GB in the end (delta: -145.7 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:50,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.79 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. [2019-10-22 10:12:50,585 INFO L168 Benchmark]: Boogie Preprocessor took 39.27 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. [2019-10-22 10:12:50,587 INFO L168 Benchmark]: RCFGBuilder took 762.22 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: 65.0 MB). Peak memory consumption was 65.0 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:50,587 INFO L168 Benchmark]: CodeCheck took 250.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:50,587 INFO L168 Benchmark]: Witness Printer took 44.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 10:12:50,590 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, 121 locations, 64 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 2, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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: 590]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L574] struct node *nodelast = ((void *)0); [L575] struct node *node = ((void *)0); [L576] COND FALSE !(__VERIFIER_nondet_int()) [L590] node->parent = ((void *)0) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 503.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 942.1 MB in the beginning and 1.1 GB in the end (delta: -145.7 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.79 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 39.27 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. * RCFGBuilder took 762.22 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: 65.0 MB). Peak memory consumption was 65.0 MB. Max. memory is 11.5 GB. * CodeCheck took 250.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * Witness Printer took 44.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...