./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c -s /tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3ff8ae763cd253b2864cd8208bb318e170f6466 ................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-12-01 05:31:45,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-01 05:31:45,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-01 05:31:45,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-01 05:31:45,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-01 05:31:45,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-01 05:31:45,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-01 05:31:45,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-01 05:31:45,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-01 05:31:45,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-01 05:31:45,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-01 05:31:45,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-01 05:31:45,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-01 05:31:45,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-01 05:31:45,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-01 05:31:45,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-01 05:31:45,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-01 05:31:45,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-01 05:31:45,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-01 05:31:45,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-01 05:31:45,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-01 05:31:45,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-01 05:31:45,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-01 05:31:45,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-01 05:31:45,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-01 05:31:45,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-01 05:31:45,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-01 05:31:45,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-01 05:31:45,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-01 05:31:45,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-01 05:31:45,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-01 05:31:45,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-01 05:31:45,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-01 05:31:45,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-01 05:31:45,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-01 05:31:45,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-01 05:31:45,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-01 05:31:45,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-01 05:31:45,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-01 05:31:45,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-01 05:31:45,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-01 05:31:45,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-12-01 05:31:45,654 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-01 05:31:45,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-01 05:31:45,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-01 05:31:45,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-12-01 05:31:45,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-01 05:31:45,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-01 05:31:45,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-01 05:31:45,656 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-01 05:31:45,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-01 05:31:45,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-01 05:31:45,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-01 05:31:45,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-01 05:31:45,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-01 05:31:45,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-01 05:31:45,657 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-01 05:31:45,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-01 05:31:45,657 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-01 05:31:45,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-01 05:31:45,657 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-12-01 05:31:45,657 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-12-01 05:31:45,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-01 05:31:45,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-01 05:31:45,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-12-01 05:31:45,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-01 05:31:45,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-01 05:31:45,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-01 05:31:45,658 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-12-01 05:31:45,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-01 05:31:45,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-01 05:31:45,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_399bf3f1-63a7-44a7-a636-079123fc69c7/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(__VERIFIER_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 -> d3ff8ae763cd253b2864cd8208bb318e170f6466 [2019-12-01 05:31:45,758 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-01 05:31:45,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-01 05:31:45,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-01 05:31:45,771 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-01 05:31:45,771 INFO L275 PluginConnector]: CDTParser initialized [2019-12-01 05:31:45,772 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/bin/ukojak/../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2019-12-01 05:31:45,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/bin/ukojak/data/e7eab0fbe/fce213c1e62a4675a74463104a118310/FLAG23e675128 [2019-12-01 05:31:46,171 INFO L306 CDTParser]: Found 1 translation units. [2019-12-01 05:31:46,171 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2019-12-01 05:31:46,175 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/bin/ukojak/data/e7eab0fbe/fce213c1e62a4675a74463104a118310/FLAG23e675128 [2019-12-01 05:31:46,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/bin/ukojak/data/e7eab0fbe/fce213c1e62a4675a74463104a118310 [2019-12-01 05:31:46,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-01 05:31:46,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-01 05:31:46,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-01 05:31:46,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-01 05:31:46,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-01 05:31:46,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:31:46" (1/1) ... [2019-12-01 05:31:46,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cba0af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:31:46, skipping insertion in model container [2019-12-01 05:31:46,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:31:46" (1/1) ... [2019-12-01 05:31:46,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-01 05:31:46,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-01 05:31:46,348 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-01 05:31:46,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 05:31:46,367 INFO L203 MainTranslator]: Completed pre-run [2019-12-01 05:31:46,380 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-01 05:31:46,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 05:31:46,399 INFO L208 MainTranslator]: Completed translation [2019-12-01 05:31:46,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:31:46 WrapperNode [2019-12-01 05:31:46,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-01 05:31:46,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-01 05:31:46,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-01 05:31:46,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-01 05:31:46,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:31:46" (1/1) ... [2019-12-01 05:31:46,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:31:46" (1/1) ... [2019-12-01 05:31:46,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-01 05:31:46,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-01 05:31:46,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-01 05:31:46,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-01 05:31:46,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:31:46" (1/1) ... [2019-12-01 05:31:46,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:31:46" (1/1) ... [2019-12-01 05:31:46,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:31:46" (1/1) ... [2019-12-01 05:31:46,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:31:46" (1/1) ... [2019-12-01 05:31:46,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:31:46" (1/1) ... [2019-12-01 05:31:46,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:31:46" (1/1) ... [2019-12-01 05:31:46,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:31:46" (1/1) ... [2019-12-01 05:31:46,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-01 05:31:46,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-01 05:31:46,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-01 05:31:46,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-01 05:31:46,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:31:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/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 [2019-12-01 05:31:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-01 05:31:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-01 05:31:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-01 05:31:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure min [2019-12-01 05:31:46,496 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2019-12-01 05:31:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-01 05:31:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-12-01 05:31:46,496 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-12-01 05:31:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-01 05:31:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2019-12-01 05:31:46,496 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2019-12-01 05:31:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-01 05:31:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure size [2019-12-01 05:31:46,496 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2019-12-01 05:31:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-01 05:31:46,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-01 05:31:46,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-12-01 05:31:46,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-12-01 05:31:46,497 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2019-12-01 05:31:46,497 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2019-12-01 05:31:46,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-01 05:31:46,788 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-01 05:31:46,789 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-01 05:31:46,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:31:46 BoogieIcfgContainer [2019-12-01 05:31:46,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-01 05:31:46,790 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-12-01 05:31:46,790 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-12-01 05:31:46,800 INFO L275 PluginConnector]: CodeCheck initialized [2019-12-01 05:31:46,800 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:31:46" (1/1) ... [2019-12-01 05:31:46,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-01 05:31:46,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 05:31:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 69 states and 90 transitions. [2019-12-01 05:31:46,836 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions. [2019-12-01 05:31:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-01 05:31:46,841 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 05:31:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 05:31:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 05:31:47,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 05:31:47,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 72 states and 95 transitions. [2019-12-01 05:31:47,015 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2019-12-01 05:31:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-12-01 05:31:47,016 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 05:31:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 05:31:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-01 05:31:47,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 05:31:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 78 states and 106 transitions. [2019-12-01 05:31:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2019-12-01 05:31:47,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-12-01 05:31:47,346 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 05:31:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 05:31:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-12-01 05:31:47,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 05:31:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 80 states and 109 transitions. [2019-12-01 05:31:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 109 transitions. [2019-12-01 05:31:47,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-12-01 05:31:47,801 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 05:31:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 05:31:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-12-01 05:31:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 05:31:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 82 states and 114 transitions. [2019-12-01 05:31:49,034 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 114 transitions. [2019-12-01 05:31:49,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-12-01 05:31:49,036 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 05:31:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 05:31:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 05:31:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 05:31:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 05:31:49,270 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 5 iterations. [2019-12-01 05:31:49,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:31:49 ImpRootNode [2019-12-01 05:31:49,328 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-12-01 05:31:49,328 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-01 05:31:49,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-01 05:31:49,328 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-01 05:31:49,328 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:31:46" (3/4) ... [2019-12-01 05:31:49,330 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-01 05:31:49,391 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_399bf3f1-63a7-44a7-a636-079123fc69c7/bin/ukojak/witness.graphml [2019-12-01 05:31:49,391 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-01 05:31:49,392 INFO L168 Benchmark]: Toolchain (without parser) took 3205.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -118.6 MB). Peak memory consumption was 41.3 MB. Max. memory is 11.5 GB. [2019-12-01 05:31:49,393 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 05:31:49,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -172.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-01 05:31:49,393 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-01 05:31:49,394 INFO L168 Benchmark]: Boogie Preprocessor took 25.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 05:31:49,394 INFO L168 Benchmark]: RCFGBuilder took 335.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 11.5 GB. [2019-12-01 05:31:49,394 INFO L168 Benchmark]: CodeCheck took 2537.45 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 40.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.1 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. [2019-12-01 05:31:49,394 INFO L168 Benchmark]: Witness Printer took 63.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-12-01 05:31:49,396 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 7 procedures, 69 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 904 SDtfs, 136 SDslu, 146 SDs, 0 SdLazy, 912 SolverSat, 230 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1611 GetRequests, 1531 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 274 NumberOfCodeBlocks, 274 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 22896 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 62/66 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: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L100] CALL nondet_tree() [L20] COND FALSE !(__VERIFIER_nondet_bool()) [L23] struct node *n = (struct node *)malloc(sizeof(struct node)); [L24] n->data = __VERIFIER_nondet_int() [L25] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L25] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={2456:0}, n={2456:0}, nondet_tree()={0:0}] [L25] n->left = nondet_tree() [L26] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L26] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={2456:0}, n={2456:0}, nondet_tree()={0:0}] [L26] n->right = nondet_tree() [L27] return n; VAL [\result={2456:0}, malloc(sizeof(struct node))={2456:0}, n={2456:0}] [L100] RET nondet_tree() [L78] CALL, EXPR min(t) VAL [n={2456:0}] [L32] COND FALSE !(!n) [L35] EXPR n->left VAL [n={2456:0}, n={2456:0}, n->left={0:0}] [L35] CALL, EXPR min(n->left) VAL [n={0:0}] [L32] COND TRUE !n [L33] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L35] RET, EXPR min(n->left) VAL [min(n->left)=2147483647, n={2456:0}, n={2456:0}, n->left={0:0}] [L35] int a = min(n->left); [L36] EXPR n->right VAL [a=2147483647, n={2456:0}, n={2456:0}, n->right={0:0}] [L36] CALL, EXPR min(n->right) VAL [n={0:0}] [L32] COND TRUE !n [L33] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L36] RET, EXPR min(n->right) VAL [a=2147483647, min(n->right)=2147483647, n={2456:0}, n={2456:0}, n->right={0:0}] [L36] int b = min(n->right); [L37] COND TRUE a <= b [L37] return a; VAL [\result=2147483647, a=2147483647, b=2147483647, n={2456:0}, n={2456:0}] [L78] RET, EXPR min(t) [L78] int a = min(t); [L79] int b; [L81] CALL, EXPR size(t) VAL [t={2456:0}] [L73] COND FALSE !(!t) [L74] EXPR t->left VAL [t={2456:0}, t={2456:0}, t->left={0:0}] [L74] CALL, EXPR size(t->left) VAL [t={0:0}] [L73] COND TRUE !t [L73] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L74] RET, EXPR size(t->left) VAL [size(t->left)=0, t={2456:0}, t={2456:0}, t->left={0:0}] [L74] EXPR t->right VAL [size(t->left)=0, t={2456:0}, t={2456:0}, t->left={0:0}, t->right={0:0}] [L74] CALL, EXPR size(t->right) VAL [t={0:0}] [L73] COND TRUE !t [L73] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L74] RET, EXPR size(t->right) VAL [size(t->left)=0, size(t->right)=0, t={2456:0}, t={2456:0}, t->left={0:0}, t->right={0:0}] [L74] return size(t->left) + size(t->right) + 1; [L81] RET, EXPR size(t) [L81] int n = size(t); [L83] EXPR, FCALL calloc(n, sizeof(int)) [L83] int *x = calloc(n, sizeof(int)); [L84] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={2457:0}, t={2456:0}] [L62] COND FALSE !(!t) [L65] EXPR t->left VAL [\old(i)=1, a={2457:0}, a={2457:0}, i=1, t={2456:0}, t={2456:0}, t->left={0:0}] [L65] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={2457:0}, t={0:0}] [L62] COND TRUE !t [L63] return i; VAL [\old(i)=1, \result=1, a={2457:0}, a={2457:0}, i=1, t={0:0}, t={0:0}] [L65] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={2457:0}, a={2457:0}, i=1, t={2456:0}, t={2456:0}, t->left={0:0}, tree_inorder(t->left, a, i)=1] [L65] i = tree_inorder(t->left, a, i) [L66] EXPR i++ [L66] EXPR t->data [L66] a[i++] = t->data [L67] EXPR t->right VAL [\old(i)=1, a={2457:0}, a={2457:0}, i=2, t={2456:0}, t={2456:0}, t->right={0:0}] [L67] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={2457:0}, t={0:0}] [L62] COND TRUE !t [L63] return i; VAL [\old(i)=2, \result=2, a={2457:0}, a={2457:0}, i=2, t={0:0}, t={0:0}] [L67] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={2457:0}, a={2457:0}, i=2, t={2456:0}, t={2456:0}, t->right={0:0}, tree_inorder(t->right, a, i)=2] [L67] i = tree_inorder(t->right, a, i) [L68] return i; VAL [\old(i)=1, \result=2, a={2457:0}, a={2457:0}, i=2, t={2456:0}, t={2456:0}] [L84] RET tree_inorder(t, x, n) [L85] EXPR x[0] [L85] CALL __VERIFIER_assert(a == x[0]) VAL [\old(cond)=0] [L11] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L11] __VERIFIER_error() VAL [\old(cond)=0, cond=0] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 211.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -172.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 335.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 11.5 GB. * CodeCheck took 2537.45 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 40.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.1 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. * Witness Printer took 63.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...