./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/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-a4ecdab [2020-11-28 04:41:25,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:41:25,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:41:25,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:41:25,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:41:25,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:41:25,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:41:26,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:41:26,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:41:26,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:41:26,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:41:26,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:41:26,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:41:26,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:41:26,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:41:26,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:41:26,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:41:26,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:41:26,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:41:26,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:41:26,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:41:26,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:41:26,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:41:26,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:41:26,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:41:26,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:41:26,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:41:26,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:41:26,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:41:26,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:41:26,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:41:26,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:41:26,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:41:26,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:41:26,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:41:26,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:41:26,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:41:26,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:41:26,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:41:26,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:41:26,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:41:26,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:41:26,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:41:26,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:41:26,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:41:26,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:41:26,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:41:26,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:41:26,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:41:26,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:41:26,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:41:26,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:41:26,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:41:26,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:41:26,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:41:26,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:41:26,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:41:26,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:41:26,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:41:26,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:41:26,107 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:41:26,107 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:41:26,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:41:26,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:41:26,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:41:26,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:41:26,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:41:26,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:41:26,109 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:41:26,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:41:26,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:41:26,110 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_2f1af3d7-94d3-4007-8225-b51593b96377/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8850e617230fbb23d096e299440f36502352977 [2020-11-28 04:41:26,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:41:26,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:41:26,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:41:26,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:41:26,434 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:41:26,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/bin/ukojak/../../sv-benchmarks/c/heap-manipulation/tree-2.i [2020-11-28 04:41:26,521 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/bin/ukojak/data/0133299af/50b57f32c8294ab19af0fe39964ded0b/FLAG2714999d8 [2020-11-28 04:41:27,186 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:41:27,187 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/sv-benchmarks/c/heap-manipulation/tree-2.i [2020-11-28 04:41:27,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/bin/ukojak/data/0133299af/50b57f32c8294ab19af0fe39964ded0b/FLAG2714999d8 [2020-11-28 04:41:27,503 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/bin/ukojak/data/0133299af/50b57f32c8294ab19af0fe39964ded0b [2020-11-28 04:41:27,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:41:27,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:41:27,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:41:27,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:41:27,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:41:27,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:27" (1/1) ... [2020-11-28 04:41:27,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@173f5525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:27, skipping insertion in model container [2020-11-28 04:41:27,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:27" (1/1) ... [2020-11-28 04:41:27,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:41:27,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:41:28,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:41:28,084 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:41:28,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:41:28,249 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:41:28,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:28 WrapperNode [2020-11-28 04:41:28,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:41:28,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:41:28,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:41:28,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:41:28,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:28" (1/1) ... [2020-11-28 04:41:28,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:28" (1/1) ... [2020-11-28 04:41:28,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:41:28,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:41:28,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:41:28,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:41:28,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:28" (1/1) ... [2020-11-28 04:41:28,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:28" (1/1) ... [2020-11-28 04:41:28,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:28" (1/1) ... [2020-11-28 04:41:28,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:28" (1/1) ... [2020-11-28 04:41:28,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:28" (1/1) ... [2020-11-28 04:41:28,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:28" (1/1) ... [2020-11-28 04:41:28,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:28" (1/1) ... [2020-11-28 04:41:28,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:41:28,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:41:28,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:41:28,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:41:28,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/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 04:41:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 04:41:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-11-28 04:41:28,515 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-11-28 04:41:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 04:41:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 04:41:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 04:41:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:41:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 04:41:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 04:41:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:41:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:41:28,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:41:29,770 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:41:29,771 INFO L298 CfgBuilder]: Removed 23 assume(true) statements. [2020-11-28 04:41:29,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:29 BoogieIcfgContainer [2020-11-28 04:41:29,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:41:29,775 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:41:29,775 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:41:29,792 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:41:29,792 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:29" (1/1) ... [2020-11-28 04:41:29,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:41:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 30 states and 50 transitions. [2020-11-28 04:41:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2020-11-28 04:41:29,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 04:41:29,885 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:30,029 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 04:41:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 28 states and 41 transitions. [2020-11-28 04:41:30,042 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 41 transitions. [2020-11-28 04:41:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 04:41:30,042 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:30,144 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 04:41:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 27 states and 39 transitions. [2020-11-28 04:41:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2020-11-28 04:41:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 04:41:30,309 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:30,482 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 04:41:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 31 states and 41 transitions. [2020-11-28 04:41:30,867 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2020-11-28 04:41:30,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 04:41:30,868 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:41:31,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:31,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 32 states and 44 transitions. [2020-11-28 04:41:31,467 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2020-11-28 04:41:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 04:41:31,468 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:41:34,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:34,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 39 states and 62 transitions. [2020-11-28 04:41:34,400 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 62 transitions. [2020-11-28 04:41:34,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 04:41:34,402 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:41:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:36,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 47 states and 78 transitions. [2020-11-28 04:41:36,867 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-11-28 04:41:36,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 04:41:36,868 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:41:38,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 50 states and 86 transitions. [2020-11-28 04:41:38,561 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 86 transitions. [2020-11-28 04:41:38,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 04:41:38,564 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:41:39,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:39,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 51 states and 89 transitions. [2020-11-28 04:41:39,557 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 89 transitions. [2020-11-28 04:41:39,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 04:41:39,558 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 04:41:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 52 states and 98 transitions. [2020-11-28 04:41:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-11-28 04:41:41,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 04:41:41,370 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 04:41:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 53 states and 102 transitions. [2020-11-28 04:41:43,115 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 102 transitions. [2020-11-28 04:41:43,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 04:41:43,116 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:43,868 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2020-11-28 04:41:44,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:41:47,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 55 states and 120 transitions. [2020-11-28 04:41:47,003 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 120 transitions. [2020-11-28 04:41:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 04:41:47,004 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:41:47,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:41:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:41:47,096 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:41:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:41:47,672 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:41:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:41:48,030 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:41:48,127 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 12 iterations. [2020-11-28 04:41:48,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:41:48 ImpRootNode [2020-11-28 04:41:48,201 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:41:48,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:41:48,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:41:48,217 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:41:48,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:29" (3/4) ... [2020-11-28 04:41:48,220 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:41:48,377 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2f1af3d7-94d3-4007-8225-b51593b96377/bin/ukojak/witness.graphml [2020-11-28 04:41:48,378 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:41:48,380 INFO L168 Benchmark]: Toolchain (without parser) took 20871.22 ms. Allocated memory was 98.6 MB in the beginning and 209.7 MB in the end (delta: 111.1 MB). Free memory was 66.8 MB in the beginning and 110.1 MB in the end (delta: -43.3 MB). Peak memory consumption was 67.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:41:48,381 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 98.6 MB. Free memory was 57.7 MB in the beginning and 57.6 MB in the end (delta: 43.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:41:48,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.34 ms. Allocated memory is still 98.6 MB. Free memory was 66.6 MB in the beginning and 62.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:41:48,383 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.60 ms. Allocated memory is still 98.6 MB. Free memory was 62.3 MB in the beginning and 60.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:41:48,384 INFO L168 Benchmark]: Boogie Preprocessor took 82.00 ms. Allocated memory is still 98.6 MB. Free memory was 60.5 MB in the beginning and 58.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:41:48,386 INFO L168 Benchmark]: RCFGBuilder took 1357.79 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 58.5 MB in the beginning and 60.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 04:41:48,387 INFO L168 Benchmark]: CodeCheck took 18426.59 ms. Allocated memory was 119.5 MB in the beginning and 209.7 MB in the end (delta: 90.2 MB). Free memory was 60.2 MB in the beginning and 113.2 MB in the end (delta: -53.0 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:41:48,388 INFO L168 Benchmark]: Witness Printer took 176.12 ms. Allocated memory is still 209.7 MB. Free memory was 113.2 MB in the beginning and 110.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:41:48,395 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: 18.2s, 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, 19.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1761 GetRequests, 1621 SyntacticMatches, 30 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3942 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 23139 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 0.31 ms. Allocated memory is still 98.6 MB. Free memory was 57.7 MB in the beginning and 57.6 MB in the end (delta: 43.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 733.34 ms. Allocated memory is still 98.6 MB. Free memory was 66.6 MB in the beginning and 62.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.60 ms. Allocated memory is still 98.6 MB. Free memory was 62.3 MB in the beginning and 60.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.00 ms. Allocated memory is still 98.6 MB. Free memory was 60.5 MB in the beginning and 58.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1357.79 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 58.5 MB in the beginning and 60.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * CodeCheck took 18426.59 ms. Allocated memory was 119.5 MB in the beginning and 209.7 MB in the end (delta: 90.2 MB). Free memory was 60.2 MB in the beginning and 113.2 MB in the end (delta: -53.0 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. * Witness Printer took 176.12 ms. Allocated memory is still 209.7 MB. Free memory was 113.2 MB in the beginning and 110.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...