./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/tree-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8850e617230fbb23d096e299440f36502352977 ........................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 17:07:15,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:07:15,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:07:15,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:07:15,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:07:15,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:07:15,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:07:15,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:07:15,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:07:15,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:07:15,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:07:15,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:07:15,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:07:15,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:07:15,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:07:15,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:07:15,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:07:15,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:07:15,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:07:15,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:07:15,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:07:15,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:07:15,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:07:15,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:07:15,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:07:15,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:07:15,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:07:15,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:07:15,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:07:15,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:07:15,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:07:15,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:07:15,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:07:15,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:07:15,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:07:15,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:07:15,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:07:15,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:07:15,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:07:15,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:07:15,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:07:15,508 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 17:07:15,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:07:15,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:07:15,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 17:07:15,559 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 17:07:15,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:07:15,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:07:15,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:07:15,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 17:07:15,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:07:15,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 17:07:15,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:07:15,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 17:07:15,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:07:15,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 17:07:15,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 17:07:15,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 17:07:15,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:07:15,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 17:07:15,564 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:07:15,565 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:07:15,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:07:15,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:07:15,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:07:15,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:07:15,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:07:15,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 17:07:15,566 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:07:15,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:07:15,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 17:07:15,569 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_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8850e617230fbb23d096e299440f36502352977 [2020-12-01 17:07:15,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:07:15,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:07:15,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:07:15,877 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:07:15,878 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:07:15,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/bin/ukojak/../../sv-benchmarks/c/heap-manipulation/tree-2.i [2020-12-01 17:07:15,977 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/bin/ukojak/data/567b9a73b/ceaa0aaa84b744f0a63bc8dc01c3264f/FLAG4b7f6bf18 [2020-12-01 17:07:16,654 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:07:16,654 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/sv-benchmarks/c/heap-manipulation/tree-2.i [2020-12-01 17:07:16,667 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/bin/ukojak/data/567b9a73b/ceaa0aaa84b744f0a63bc8dc01c3264f/FLAG4b7f6bf18 [2020-12-01 17:07:16,941 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/bin/ukojak/data/567b9a73b/ceaa0aaa84b744f0a63bc8dc01c3264f [2020-12-01 17:07:16,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:07:16,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:07:16,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:07:16,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:07:16,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:07:16,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:07:16" (1/1) ... [2020-12-01 17:07:16,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d339358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:07:16, skipping insertion in model container [2020-12-01 17:07:16,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:07:16" (1/1) ... [2020-12-01 17:07:16,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:07:16,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:07:17,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:07:17,377 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:07:17,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:07:17,472 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:07:17,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:07:17 WrapperNode [2020-12-01 17:07:17,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:07:17,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:07:17,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:07:17,474 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:07:17,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:07:17" (1/1) ... [2020-12-01 17:07:17,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:07:17" (1/1) ... [2020-12-01 17:07:17,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:07:17,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:07:17,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:07:17,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:07:17,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:07:17" (1/1) ... [2020-12-01 17:07:17,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:07:17" (1/1) ... [2020-12-01 17:07:17,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:07:17" (1/1) ... [2020-12-01 17:07:17,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:07:17" (1/1) ... [2020-12-01 17:07:17,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:07:17" (1/1) ... [2020-12-01 17:07:17,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:07:17" (1/1) ... [2020-12-01 17:07:17,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:07:17" (1/1) ... [2020-12-01 17:07:17,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:07:17,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:07:17,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:07:17,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:07:17,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:07:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/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 [2020-12-01 17:07:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 17:07:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-12-01 17:07:17,692 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-12-01 17:07:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 17:07:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 17:07:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 17:07:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 17:07:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 17:07:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 17:07:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 17:07:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:07:17,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:07:18,641 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:07:18,641 INFO L298 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-01 17:07:18,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:07:18 BoogieIcfgContainer [2020-12-01 17:07:18,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:07:18,645 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:07:18,645 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:07:18,655 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:07:18,655 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:07:18" (1/1) ... [2020-12-01 17:07:18,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:07:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:07:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 30 states and 50 transitions. [2020-12-01 17:07:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2020-12-01 17:07:18,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 17:07:18,710 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:07:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:07:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:07:18,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:07:18,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 28 states and 41 transitions. [2020-12-01 17:07:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 41 transitions. [2020-12-01 17:07:18,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 17:07:18,863 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:07:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:07:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:07:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:07:19,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 27 states and 39 transitions. [2020-12-01 17:07:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2020-12-01 17:07:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 17:07:19,045 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:07:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:07:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:07:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:07:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 31 states and 41 transitions. [2020-12-01 17:07:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2020-12-01 17:07:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 17:07:19,423 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:07:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:07:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:07:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:07:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 32 states and 44 transitions. [2020-12-01 17:07:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2020-12-01 17:07:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 17:07:19,933 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:07:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:07:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:07:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:07:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 39 states and 62 transitions. [2020-12-01 17:07:22,279 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 62 transitions. [2020-12-01 17:07:22,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 17:07:22,282 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:07:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:07:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:07:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:07:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 47 states and 78 transitions. [2020-12-01 17:07:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-12-01 17:07:24,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 17:07:24,640 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:07:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:07:25,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:07:25,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:07:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 50 states and 86 transitions. [2020-12-01 17:07:25,953 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 86 transitions. [2020-12-01 17:07:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 17:07:25,954 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:07:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:07:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:07:26,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:07:26,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 51 states and 89 transitions. [2020-12-01 17:07:26,969 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 89 transitions. [2020-12-01 17:07:26,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 17:07:26,970 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:07:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:07:27,691 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-12-01 17:07:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:07:28,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:07:28,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 52 states and 98 transitions. [2020-12-01 17:07:28,886 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-12-01 17:07:28,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 17:07:28,887 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:07:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:07:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:07:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:07:30,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 53 states and 102 transitions. [2020-12-01 17:07:30,279 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 102 transitions. [2020-12-01 17:07:30,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 17:07:30,280 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:07:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:07:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:07:33,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:07:33,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 55 states and 120 transitions. [2020-12-01 17:07:33,620 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 120 transitions. [2020-12-01 17:07:33,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 17:07:33,621 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:07:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:07:33,659 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:07:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:07:33,686 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:07:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:07:34,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:07:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:07:34,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:07:35,363 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 12 iterations. [2020-12-01 17:07:35,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:07:35 ImpRootNode [2020-12-01 17:07:35,398 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:07:35,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:07:35,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:07:35,399 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:07:35,399 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:07:18" (3/4) ... [2020-12-01 17:07:35,401 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 17:07:35,462 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_abd909e3-b58f-4b37-9c39-ab8bc5af1e10/bin/ukojak/witness.graphml [2020-12-01 17:07:35,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:07:35,469 INFO L168 Benchmark]: Toolchain (without parser) took 18523.77 ms. Allocated memory was 92.3 MB in the beginning and 195.0 MB in the end (delta: 102.8 MB). Free memory was 60.4 MB in the beginning and 66.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 95.9 MB. Max. memory is 16.1 GB. [2020-12-01 17:07:35,470 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 51.6 MB in the beginning and 51.5 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:07:35,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.84 ms. Allocated memory is still 92.3 MB. Free memory was 60.1 MB in the beginning and 56.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:07:35,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.40 ms. Allocated memory is still 92.3 MB. Free memory was 56.7 MB in the beginning and 54.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:07:35,472 INFO L168 Benchmark]: Boogie Preprocessor took 56.81 ms. Allocated memory is still 92.3 MB. Free memory was 54.6 MB in the beginning and 52.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:07:35,472 INFO L168 Benchmark]: RCFGBuilder took 1022.24 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 58.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. [2020-12-01 17:07:35,473 INFO L168 Benchmark]: CodeCheck took 16753.22 ms. Allocated memory was 111.1 MB in the beginning and 195.0 MB in the end (delta: 83.9 MB). Free memory was 58.4 MB in the beginning and 69.0 MB in the end (delta: -10.6 MB). Peak memory consumption was 73.0 MB. Max. memory is 16.1 GB. [2020-12-01 17:07:35,474 INFO L168 Benchmark]: Witness Printer took 64.60 ms. Allocated memory is still 195.0 MB. Free memory was 69.0 MB in the beginning and 66.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:07:35,477 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 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.6s, OverallIterations: 12, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27456 SDtfs, 11784 SDslu, 15948 SDs, 0 SdLazy, 36396 SolverSat, 14660 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1761 GetRequests, 1621 SyntacticMatches, 30 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3964 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 24749 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 26/45 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: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L585] struct node *nodelast = ((void *)0); [L586] struct node *node = ((void *)0); [L587] COND TRUE __VERIFIER_nondet_int() [L588] node = malloc(sizeof *node) [L589] COND FALSE !(!node) [L591] node->left = ((void *)0) [L592] node->right = nodelast [L593] COND FALSE !(\read(*nodelast)) [L595] int value = __VERIFIER_nondet_int(); [L596] node->value = value [L597] nodelast = node [L587] COND FALSE !(__VERIFIER_nondet_int()) [L599] COND TRUE node != ((void *)0) [L600] node->left = malloc(sizeof *node) [L601] COND FALSE !(!node) [L603] EXPR node->left [L603] node->left->left = ((void *)0) [L604] EXPR node->left [L604] node->left->right = ((void *)0) [L605] EXPR node->left [L605] node->left->value = 42 [L606] EXPR node->left [L606] node->left->parent = node [L607] EXPR node->right [L607] node = node->right [L599] COND FALSE !(node != ((void *)0)) [L609] return nodelast; [L630] struct node *data = create_tree(); [L631] COND FALSE !(!data) [L575] COND FALSE !(!(node)) [L576] COND TRUE node != ((void *)0) [L577] node->left [L577] COND TRUE node->left [L578] EXPR node->left [L578] EXPR node->left->value [L578] COND FALSE !(!(node->left->value == 42)) [L579] EXPR node->value [L579] COND TRUE !(node->value) [L579] CALL fail() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "tree-2.c", 3, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 51.6 MB in the beginning and 51.5 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 526.84 ms. Allocated memory is still 92.3 MB. Free memory was 60.1 MB in the beginning and 56.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.40 ms. Allocated memory is still 92.3 MB. Free memory was 56.7 MB in the beginning and 54.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.81 ms. Allocated memory is still 92.3 MB. Free memory was 54.6 MB in the beginning and 52.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1022.24 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 58.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. * CodeCheck took 16753.22 ms. Allocated memory was 111.1 MB in the beginning and 195.0 MB in the end (delta: 83.9 MB). Free memory was 58.4 MB in the beginning and 69.0 MB in the end (delta: -10.6 MB). Peak memory consumption was 73.0 MB. Max. memory is 16.1 GB. * Witness Printer took 64.60 ms. Allocated memory is still 195.0 MB. Free memory was 69.0 MB in the beginning and 66.9 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...