./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/tree-4.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_d42ff336-495a-43a4-919d-1494bcb3963c/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-4.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/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 925bf64e647f08edad293233522d90c39c43645d ....................................................................................................................................................................................................................................................................................................................... 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 04:31:55,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:31:55,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:31:56,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:31:56,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:31:56,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:31:56,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:31:56,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:31:56,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:31:56,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:31:56,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:31:56,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:31:56,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:31:56,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:31:56,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:31:56,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:31:56,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:31:56,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:31:56,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:31:56,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:31:56,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:31:56,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:31:56,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:31:56,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:31:56,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:31:56,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:31:56,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:31:56,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:31:56,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:31:56,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:31:56,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:31:56,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:31:56,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:31:56,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:31:56,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:31:56,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:31:56,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:31:56,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:31:56,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:31:56,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:31:56,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:31:56,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:31:56,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:31:56,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:31:56,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:31:56,124 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:31:56,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:31:56,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:31:56,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:31:56,126 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:31:56,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:31:56,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:31:56,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:31:56,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:31:56,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:31:56,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:31:56,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:31:56,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:31:56,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:31:56,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:31:56,128 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:31:56,128 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:31:56,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:31:56,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:31:56,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:31:56,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:31:56,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:31:56,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:31:56,130 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:31:56,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:31:56,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:31:56,131 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_d42ff336-495a-43a4-919d-1494bcb3963c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 925bf64e647f08edad293233522d90c39c43645d [2020-11-28 04:31:56,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:31:56,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:31:56,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:31:56,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:31:56,461 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:31:56,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/bin/ukojak/../../sv-benchmarks/c/heap-manipulation/tree-4.i [2020-11-28 04:31:56,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/bin/ukojak/data/830516dd8/bb99b87fe7744fdeb6f972b1b405d704/FLAGa8f0e824a [2020-11-28 04:31:57,134 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:31:57,134 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/sv-benchmarks/c/heap-manipulation/tree-4.i [2020-11-28 04:31:57,151 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/bin/ukojak/data/830516dd8/bb99b87fe7744fdeb6f972b1b405d704/FLAGa8f0e824a [2020-11-28 04:31:57,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/bin/ukojak/data/830516dd8/bb99b87fe7744fdeb6f972b1b405d704 [2020-11-28 04:31:57,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:31:57,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:31:57,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:31:57,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:31:57,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:31:57,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:31:57" (1/1) ... [2020-11-28 04:31:57,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab08840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:31:57, skipping insertion in model container [2020-11-28 04:31:57,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:31:57" (1/1) ... [2020-11-28 04:31:57,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:31:57,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:31:57,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:31:57,887 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:31:57,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:31:57,984 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:31:57,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:31:57 WrapperNode [2020-11-28 04:31:57,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:31:57,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:31:57,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:31:57,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:31:57,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:31:57" (1/1) ... [2020-11-28 04:31:58,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:31:57" (1/1) ... [2020-11-28 04:31:58,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:31:58,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:31:58,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:31:58,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:31:58,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:31:57" (1/1) ... [2020-11-28 04:31:58,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:31:57" (1/1) ... [2020-11-28 04:31:58,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:31:57" (1/1) ... [2020-11-28 04:31:58,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:31:57" (1/1) ... [2020-11-28 04:31:58,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:31:57" (1/1) ... [2020-11-28 04:31:58,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:31:57" (1/1) ... [2020-11-28 04:31:58,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:31:57" (1/1) ... [2020-11-28 04:31:58,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:31:58,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:31:58,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:31:58,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:31:58,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:31:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/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 04:31:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 04:31:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-11-28 04:31:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-11-28 04:31:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 04:31:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 04:31:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 04:31:58,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:31:58,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 04:31:58,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 04:31:58,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:31:58,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:31:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:31:59,156 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:31:59,156 INFO L298 CfgBuilder]: Removed 23 assume(true) statements. [2020-11-28 04:31:59,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:31:59 BoogieIcfgContainer [2020-11-28 04:31:59,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:31:59,160 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:31:59,160 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:31:59,170 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:31:59,171 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:31:59" (1/1) ... [2020-11-28 04:31:59,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:31:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:31:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 31 states and 51 transitions. [2020-11-28 04:31:59,234 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-11-28 04:31:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 04:31:59,238 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:31:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:31:59,343 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 04:31:59,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:31:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 29 states and 42 transitions. [2020-11-28 04:31:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 42 transitions. [2020-11-28 04:31:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 04:31:59,354 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:31:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:31:59,455 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 04:31:59,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:31:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 28 states and 40 transitions. [2020-11-28 04:31:59,595 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2020-11-28 04:31:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 04:31:59,596 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:31:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:31:59,748 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 04:31:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:31:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 33 states and 44 transitions. [2020-11-28 04:31:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2020-11-28 04:31:59,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 04:31:59,998 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:32:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:32:00,110 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 04:32:00,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:32:00,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 34 states and 47 transitions. [2020-11-28 04:32:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2020-11-28 04:32:00,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 04:32:00,475 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:32:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:32:00,897 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 04:32:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:32:02,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 43 states and 69 transitions. [2020-11-28 04:32:02,661 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2020-11-28 04:32:02,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 04:32:02,663 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:32:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:32:03,055 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 04:32:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:32:04,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 49 states and 82 transitions. [2020-11-28 04:32:04,904 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 82 transitions. [2020-11-28 04:32:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 04:32:04,906 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:32:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:32:05,500 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 04:32:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:32:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 53 states and 91 transitions. [2020-11-28 04:32:06,657 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 91 transitions. [2020-11-28 04:32:06,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 04:32:06,658 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:32:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:32:06,780 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 04:32:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:32:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 54 states and 94 transitions. [2020-11-28 04:32:07,591 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 94 transitions. [2020-11-28 04:32:07,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 04:32:07,592 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:32:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:32:07,624 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:32:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:32:07,660 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:32:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:32:08,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:32:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:32:08,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:32:08,717 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 9 iterations. [2020-11-28 04:32:08,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:32:08 ImpRootNode [2020-11-28 04:32:08,784 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:32:08,785 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:32:08,785 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:32:08,785 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:32:08,786 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:31:59" (3/4) ... [2020-11-28 04:32:08,788 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:32:08,898 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d42ff336-495a-43a4-919d-1494bcb3963c/bin/ukojak/witness.graphml [2020-11-28 04:32:08,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:32:08,900 INFO L168 Benchmark]: Toolchain (without parser) took 11473.89 ms. Allocated memory was 100.7 MB in the beginning and 155.2 MB in the end (delta: 54.5 MB). Free memory was 69.4 MB in the beginning and 112.5 MB in the end (delta: -43.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:32:08,901 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory was 37.9 MB in the beginning and 37.8 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:32:08,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.72 ms. Allocated memory is still 100.7 MB. Free memory was 69.1 MB in the beginning and 65.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:32:08,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.57 ms. Allocated memory is still 100.7 MB. Free memory was 65.2 MB in the beginning and 62.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:32:08,903 INFO L168 Benchmark]: Boogie Preprocessor took 33.37 ms. Allocated memory is still 100.7 MB. Free memory was 62.4 MB in the beginning and 61.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:32:08,903 INFO L168 Benchmark]: RCFGBuilder took 1086.05 ms. Allocated memory is still 100.7 MB. Free memory was 61.0 MB in the beginning and 56.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:32:08,904 INFO L168 Benchmark]: CodeCheck took 9624.62 ms. Allocated memory was 100.7 MB in the beginning and 155.2 MB in the end (delta: 54.5 MB). Free memory was 56.8 MB in the beginning and 114.6 MB in the end (delta: -57.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:32:08,905 INFO L168 Benchmark]: Witness Printer took 113.90 ms. Allocated memory is still 155.2 MB. Free memory was 114.6 MB in the beginning and 112.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:32:08,908 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, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.5s, OverallIterations: 9, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3848 SDtfs, 2000 SDslu, 2480 SDs, 0 SdLazy, 4788 SolverSat, 1800 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1173 GetRequests, 1067 SyntacticMatches, 16 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2431 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 13896 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 10/18 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->parent = ((void *)0) [L601] COND TRUE node != ((void *)0) [L602] node->left = malloc(sizeof *node) [L603] COND FALSE !(!node) [L605] EXPR node->left [L605] node->left->left = ((void *)0) [L606] EXPR node->left [L606] node->left->right = ((void *)0) [L607] EXPR node->left [L607] node->left->value = 42 [L608] EXPR node->left [L608] node->left->parent = node [L609] EXPR node->right [L609] node = node->right [L601] COND FALSE !(node != ((void *)0)) [L611] return nodelast; [L632] struct node *data = create_tree(); [L633] 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-4.c", 3, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory was 37.9 MB in the beginning and 37.8 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 554.72 ms. Allocated memory is still 100.7 MB. Free memory was 69.1 MB in the beginning and 65.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.57 ms. Allocated memory is still 100.7 MB. Free memory was 65.2 MB in the beginning and 62.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.37 ms. Allocated memory is still 100.7 MB. Free memory was 62.4 MB in the beginning and 61.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1086.05 ms. Allocated memory is still 100.7 MB. Free memory was 61.0 MB in the beginning and 56.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. * CodeCheck took 9624.62 ms. Allocated memory was 100.7 MB in the beginning and 155.2 MB in the end (delta: 54.5 MB). Free memory was 56.8 MB in the beginning and 114.6 MB in the end (delta: -57.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 113.90 ms. Allocated memory is still 155.2 MB. Free memory was 114.6 MB in the beginning and 112.5 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...