./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_0a8ae610-90ac-4a9a-9515-e230f3580ec0/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/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 [2020-11-28 04:39:45,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:39:45,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:39:45,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:39:45,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:39:45,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:39:45,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:39:45,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:39:45,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:39:45,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:39:45,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:39:45,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:39:45,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:39:45,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:39:45,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:39:45,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:39:45,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:39:45,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:39:45,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:39:45,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:39:45,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:39:45,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:39:45,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:39:45,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:39:45,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:39:45,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:39:45,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:39:45,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:39:45,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:39:45,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:39:45,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:39:45,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:39:45,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:39:45,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:39:45,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:39:45,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:39:45,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:39:45,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:39:45,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:39:45,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:39:45,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:39:45,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-11-28 04:39:45,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:39:45,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:39:45,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:39:45,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:39:45,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:39:45,628 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:39:45,628 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 04:39:45,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:39:45,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:39:45,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:39:45,629 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 04:39:45,629 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 04:39:45,630 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 04:39:45,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:39:45,630 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:39:45,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:39:45,631 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:39:45,631 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:39:45,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:39:45,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:39:45,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:39:45,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:39:45,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:39:45,633 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:39:45,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:39:45,633 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_0a8ae610-90ac-4a9a-9515-e230f3580ec0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> daa6bd618e8acf5db639c256f6cad62f101e97d0 [2020-11-28 04:39:45,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:39:45,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:39:45,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:39:45,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:39:45,936 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:39:45,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/bin/ukojak/../../sv-benchmarks/c/heap-manipulation/tree-1.i [2020-11-28 04:39:46,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/bin/ukojak/data/49d854f99/1dec95f0ab6d4065a010f51cdbe5b2f8/FLAG3cf3158c6 [2020-11-28 04:39:46,539 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:39:46,539 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/sv-benchmarks/c/heap-manipulation/tree-1.i [2020-11-28 04:39:46,550 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/bin/ukojak/data/49d854f99/1dec95f0ab6d4065a010f51cdbe5b2f8/FLAG3cf3158c6 [2020-11-28 04:39:46,861 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/bin/ukojak/data/49d854f99/1dec95f0ab6d4065a010f51cdbe5b2f8 [2020-11-28 04:39:46,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:39:46,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:39:46,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:39:46,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:39:46,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:39:46,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:46" (1/1) ... [2020-11-28 04:39:46,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e8b0e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:46, skipping insertion in model container [2020-11-28 04:39:46,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:46" (1/1) ... [2020-11-28 04:39:46,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:39:46,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:39:47,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:39:47,239 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:39:47,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:39:47,356 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:39:47,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47 WrapperNode [2020-11-28 04:39:47,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:39:47,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:39:47,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:39:47,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:39:47,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:39:47,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:39:47,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:39:47,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:39:47,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:39:47,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:39:47,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:39:47,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:39:47,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/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 [2020-11-28 04:39:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 04:39:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 04:39:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 04:39:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 04:39:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:39:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 04:39:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 04:39:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:39:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:39:47,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:39:48,745 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:39:48,745 INFO L298 CfgBuilder]: Removed 33 assume(true) statements. [2020-11-28 04:39:48,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:48 BoogieIcfgContainer [2020-11-28 04:39:48,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:39:48,748 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:39:48,749 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:39:48,762 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:39:48,762 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:48" (1/1) ... [2020-11-28 04:39:48,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:39:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:48,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 135 states and 158 transitions. [2020-11-28 04:39:48,827 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 158 transitions. [2020-11-28 04:39:48,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 04:39:48,829 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:39:48,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:48,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 135 states and 157 transitions. [2020-11-28 04:39:48,940 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2020-11-28 04:39:48,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 04:39:48,940 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:39:49,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:49,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 134 states and 156 transitions. [2020-11-28 04:39:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 156 transitions. [2020-11-28 04:39:49,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 04:39:49,050 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:39:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 133 states and 155 transitions. [2020-11-28 04:39:49,210 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 155 transitions. [2020-11-28 04:39:49,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 04:39:49,210 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:39:49,243 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:39:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:39:49,261 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:39:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:39:49,304 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:39:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:39:49,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:39:49,327 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2020-11-28 04:39:49,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:39:49 ImpRootNode [2020-11-28 04:39:49,357 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:39:49,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:39:49,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:39:49,358 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:39:49,359 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:48" (3/4) ... [2020-11-28 04:39:49,362 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:39:49,403 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0a8ae610-90ac-4a9a-9515-e230f3580ec0/bin/ukojak/witness.graphml [2020-11-28 04:39:49,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:39:49,406 INFO L168 Benchmark]: Toolchain (without parser) took 2540.04 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 61.9 MB in the beginning and 60.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:49,407 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 92.3 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:39:49,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.32 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 61.6 MB in the beginning and 86.7 MB in the end (delta: -25.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:49,408 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.04 ms. Allocated memory is still 123.7 MB. Free memory was 86.7 MB in the beginning and 84.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:49,409 INFO L168 Benchmark]: Boogie Preprocessor took 41.43 ms. Allocated memory is still 123.7 MB. Free memory was 84.7 MB in the beginning and 82.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:49,410 INFO L168 Benchmark]: RCFGBuilder took 1292.58 ms. Allocated memory is still 123.7 MB. Free memory was 82.6 MB in the beginning and 97.3 MB in the end (delta: -14.7 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:49,411 INFO L168 Benchmark]: CodeCheck took 608.39 ms. Allocated memory is still 123.7 MB. Free memory was 97.3 MB in the beginning and 62.5 MB in the end (delta: 34.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:49,411 INFO L168 Benchmark]: Witness Printer took 46.08 ms. Allocated memory is still 123.7 MB. Free memory was 62.5 MB in the beginning and 60.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:49,417 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: 0.5s, 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 0.15 ms. Allocated memory is still 92.3 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 492.32 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 61.6 MB in the beginning and 86.7 MB in the end (delta: -25.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.04 ms. Allocated memory is still 123.7 MB. Free memory was 86.7 MB in the beginning and 84.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.43 ms. Allocated memory is still 123.7 MB. Free memory was 84.7 MB in the beginning and 82.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1292.58 ms. Allocated memory is still 123.7 MB. Free memory was 82.6 MB in the beginning and 97.3 MB in the end (delta: -14.7 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. * CodeCheck took 608.39 ms. Allocated memory is still 123.7 MB. Free memory was 97.3 MB in the beginning and 62.5 MB in the end (delta: 34.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * Witness Printer took 46.08 ms. Allocated memory is still 123.7 MB. Free memory was 62.5 MB in the beginning and 60.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...