./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/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 daa6bd618e8acf5db639c256f6cad62f101e97d0 ......................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-29 19:53:35,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:53:35,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:53:35,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:53:35,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:53:35,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:53:35,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:53:35,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:53:35,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:53:35,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:53:35,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:53:35,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:53:35,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:53:35,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:53:35,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:53:35,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:53:35,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:53:35,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:53:35,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:53:35,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:53:35,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:53:35,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:53:35,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:53:35,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:53:35,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:53:35,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:53:35,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:53:35,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:53:35,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:53:35,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:53:35,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:53:35,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:53:35,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:53:35,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:53:35,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:53:35,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:53:35,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:53:35,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:53:35,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:53:35,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:53:35,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:53:35,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-11-29 19:53:35,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:53:35,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:53:35,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:53:35,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:53:35,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:53:35,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:53:35,432 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:53:35,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:53:35,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:53:35,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:53:35,434 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 19:53:35,434 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 19:53:35,434 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 19:53:35,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:53:35,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:53:35,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:53:35,436 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-29 19:53:35,436 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-29 19:53:35,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:53:35,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:53:35,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 19:53:35,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:53:35,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:53:35,438 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-29 19:53:35,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:53:35,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/bin/ukojak/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> daa6bd618e8acf5db639c256f6cad62f101e97d0 [2020-11-29 19:53:35,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:53:35,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:53:35,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:53:35,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:53:35,787 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:53:35,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/bin/ukojak/../../sv-benchmarks/c/heap-manipulation/tree-1.i [2020-11-29 19:53:35,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/bin/ukojak/data/90ce9541e/0629afcf2b4f49ecab08e925ed70c62a/FLAG938f2d110 [2020-11-29 19:53:36,509 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:53:36,510 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/sv-benchmarks/c/heap-manipulation/tree-1.i [2020-11-29 19:53:36,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/bin/ukojak/data/90ce9541e/0629afcf2b4f49ecab08e925ed70c62a/FLAG938f2d110 [2020-11-29 19:53:36,788 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/bin/ukojak/data/90ce9541e/0629afcf2b4f49ecab08e925ed70c62a [2020-11-29 19:53:36,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:53:36,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:53:36,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:53:36,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:53:36,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:53:36,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:53:36" (1/1) ... [2020-11-29 19:53:36,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7d8007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:53:36, skipping insertion in model container [2020-11-29 19:53:36,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:53:36" (1/1) ... [2020-11-29 19:53:36,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:53:36,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:53:37,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:53:37,309 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:53:37,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:53:37,449 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:53:37,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:53:37 WrapperNode [2020-11-29 19:53:37,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:53:37,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:53:37,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:53:37,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:53:37,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:53:37" (1/1) ... [2020-11-29 19:53:37,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:53:37" (1/1) ... [2020-11-29 19:53:37,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:53:37,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:53:37,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:53:37,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:53:37,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:53:37" (1/1) ... [2020-11-29 19:53:37,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:53:37" (1/1) ... [2020-11-29 19:53:37,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:53:37" (1/1) ... [2020-11-29 19:53:37,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:53:37" (1/1) ... [2020-11-29 19:53:37,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:53:37" (1/1) ... [2020-11-29 19:53:37,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:53:37" (1/1) ... [2020-11-29 19:53:37,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:53:37" (1/1) ... [2020-11-29 19:53:37,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:53:37,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:53:37,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:53:37,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:53:37,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:53:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/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 [2020-11-29 19:53:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:53:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:53:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:53:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:53:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:53:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:53:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:53:37,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:53:37,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:53:37,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:53:39,027 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:53:39,028 INFO L298 CfgBuilder]: Removed 33 assume(true) statements. [2020-11-29 19:53:39,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:53:39 BoogieIcfgContainer [2020-11-29 19:53:39,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:53:39,031 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-29 19:53:39,031 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-29 19:53:39,043 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-29 19:53:39,044 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:53:39" (1/1) ... [2020-11-29 19:53:39,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:53:39,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:53:39,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 135 states and 158 transitions. [2020-11-29 19:53:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 158 transitions. [2020-11-29 19:53:39,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-29 19:53:39,121 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:53:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:53:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:53:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:53:39,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 135 states and 157 transitions. [2020-11-29 19:53:39,291 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2020-11-29 19:53:39,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 19:53:39,291 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:53:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:53:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:53:39,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:53:39,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 134 states and 156 transitions. [2020-11-29 19:53:39,470 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 156 transitions. [2020-11-29 19:53:39,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 19:53:39,470 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:53:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:53:39,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:53:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:53:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 133 states and 155 transitions. [2020-11-29 19:53:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 155 transitions. [2020-11-29 19:53:39,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 19:53:39,676 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:53:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:53:39,701 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:53:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:53:39,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:53:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:53:39,783 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:53:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:53:39,800 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:53:39,818 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2020-11-29 19:53:39,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.11 07:53:39 ImpRootNode [2020-11-29 19:53:39,857 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-29 19:53:39,858 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:53:39,858 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:53:39,858 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:53:39,859 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:53:39" (3/4) ... [2020-11-29 19:53:39,863 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:53:39,928 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7a92e2e9-ec0f-45e4-bf0d-ef0b5b97a1f0/bin/ukojak/witness.graphml [2020-11-29 19:53:39,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:53:39,932 INFO L168 Benchmark]: Toolchain (without parser) took 3136.25 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 54.3 MB in the beginning and 53.4 MB in the end (delta: 919.6 kB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:53:39,934 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 88.1 MB. Free memory was 47.5 MB in the beginning and 47.5 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:53:39,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.43 ms. Allocated memory is still 88.1 MB. Free memory was 54.1 MB in the beginning and 52.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:53:39,938 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.76 ms. Allocated memory is still 88.1 MB. Free memory was 52.0 MB in the beginning and 49.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:53:39,943 INFO L168 Benchmark]: Boogie Preprocessor took 85.13 ms. Allocated memory is still 88.1 MB. Free memory was 49.6 MB in the beginning and 47.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:53:39,944 INFO L168 Benchmark]: RCFGBuilder took 1379.67 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 47.5 MB in the beginning and 40.9 MB in the end (delta: 6.6 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:53:39,944 INFO L168 Benchmark]: CodeCheck took 825.60 ms. Allocated memory is still 107.0 MB. Free memory was 40.1 MB in the beginning and 54.6 MB in the end (delta: -14.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:53:39,945 INFO L168 Benchmark]: Witness Printer took 70.29 ms. Allocated memory is still 107.0 MB. Free memory was 54.6 MB in the beginning and 53.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:53:39,948 INFO L339 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, 135 locations, 67 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 28 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 58 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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: 601]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L585] struct node *nodelast = ((void *)0); [L586] struct node *node = ((void *)0); [L587] COND FALSE !(__VERIFIER_nondet_int()) [L601] node->parent = ((void *)0) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 88.1 MB. Free memory was 47.5 MB in the beginning and 47.5 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 657.43 ms. Allocated memory is still 88.1 MB. Free memory was 54.1 MB in the beginning and 52.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 110.76 ms. Allocated memory is still 88.1 MB. Free memory was 52.0 MB in the beginning and 49.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.13 ms. Allocated memory is still 88.1 MB. Free memory was 49.6 MB in the beginning and 47.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1379.67 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 47.5 MB in the beginning and 40.9 MB in the end (delta: 6.6 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. * CodeCheck took 825.60 ms. Allocated memory is still 107.0 MB. Free memory was 40.1 MB in the beginning and 54.6 MB in the end (delta: -14.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 70.29 ms. Allocated memory is still 107.0 MB. Free memory was 54.6 MB in the beginning and 53.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...