./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/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 1d36d9c90d70f68ab71543f184cd64aeaf02e524 ................................................................................................................................................................................................................................................................................................................. 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 0.1.23-5842f4b [2018-11-18 16:14:22,919 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:14:22,920 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:14:22,926 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:14:22,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:14:22,927 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:14:22,928 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:14:22,929 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:14:22,930 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:14:22,931 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:14:22,931 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:14:22,931 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:14:22,932 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:14:22,933 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:14:22,933 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:14:22,934 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:14:22,934 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:14:22,935 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:14:22,936 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:14:22,937 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:14:22,937 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:14:22,938 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:14:22,939 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:14:22,939 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:14:22,939 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:14:22,940 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:14:22,940 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:14:22,941 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:14:22,941 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:14:22,942 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:14:22,942 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:14:22,943 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:14:22,943 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:14:22,943 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:14:22,944 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:14:22,944 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:14:22,944 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-18 16:14:22,952 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:14:22,953 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:14:22,953 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:14:22,953 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 16:14:22,954 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:14:22,954 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:14:22,954 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:14:22,954 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:14:22,954 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:14:22,954 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:14:22,955 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:14:22,955 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:14:22,955 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:14:22,955 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:14:22,955 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:14:22,955 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:14:22,955 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:14:22,955 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:14:22,956 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-18 16:14:22,956 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-18 16:14:22,956 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:14:22,956 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:14:22,956 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 16:14:22,956 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:14:22,956 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:14:22,957 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:14:22,957 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-18 16:14:22,957 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:14:22,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:14:22,957 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/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 -> 1d36d9c90d70f68ab71543f184cd64aeaf02e524 [2018-11-18 16:14:22,980 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:14:22,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:14:22,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:14:22,993 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:14:22,993 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:14:22,994 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/ukojak/../../sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-11-18 16:14:23,034 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/ukojak/data/bfbfc1231/6f67ec1c38e54e41ad6bff55983eb081/FLAG078d749b5 [2018-11-18 16:14:23,472 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:14:23,473 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-11-18 16:14:23,483 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/ukojak/data/bfbfc1231/6f67ec1c38e54e41ad6bff55983eb081/FLAG078d749b5 [2018-11-18 16:14:23,493 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/ukojak/data/bfbfc1231/6f67ec1c38e54e41ad6bff55983eb081 [2018-11-18 16:14:23,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:14:23,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:14:23,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:14:23,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:14:23,498 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:14:23,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316a6cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23, skipping insertion in model container [2018-11-18 16:14:23,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:14:23,533 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:14:23,721 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:14:23,727 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:14:23,757 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:14:23,827 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:14:23,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23 WrapperNode [2018-11-18 16:14:23,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:14:23,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:14:23,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:14:23,828 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:14:23,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:14:23,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:14:23,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:14:23,862 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:14:23,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:14:23,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:14:23,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:14:23,880 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:14:23,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/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 [2018-11-18 16:14:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 16:14:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 16:14:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 16:14:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 16:14:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:14:23,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:14:24,128 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:14:24,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:14:24 BoogieIcfgContainer [2018-11-18 16:14:24,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:14:24,129 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-18 16:14:24,129 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-18 16:14:24,136 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-18 16:14:24,137 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:14:24" (1/1) ... [2018-11-18 16:14:24,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:14:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:14:24,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 21 states and 29 transitions. [2018-11-18 16:14:24,171 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2018-11-18 16:14:24,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 16:14:24,173 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:14:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:14:24,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:14:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:14:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2018-11-18 16:14:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2018-11-18 16:14:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 16:14:24,252 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:14:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:14:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:14:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:14:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 23 states and 28 transitions. [2018-11-18 16:14:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2018-11-18 16:14:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 16:14:24,366 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:14:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:14:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:14:24,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:14:24,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 24 states and 31 transitions. [2018-11-18 16:14:24,578 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2018-11-18 16:14:24,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 16:14:24,578 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:14:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:14:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 16:14:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:14:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 30 states and 40 transitions. [2018-11-18 16:14:24,898 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2018-11-18 16:14:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 16:14:24,900 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:14:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:14:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:14:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:14:25,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 32 states and 43 transitions. [2018-11-18 16:14:25,462 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2018-11-18 16:14:25,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 16:14:25,463 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:14:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:14:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 16:14:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:14:25,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 36 states and 46 transitions. [2018-11-18 16:14:25,734 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2018-11-18 16:14:25,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 16:14:25,734 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:14:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:14:25,934 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:14:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:14:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 62 states and 83 transitions. [2018-11-18 16:14:27,596 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 83 transitions. [2018-11-18 16:14:27,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 16:14:27,596 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:14:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:14:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:14:27,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:14:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 64 states and 84 transitions. [2018-11-18 16:14:27,796 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-18 16:14:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 16:14:27,797 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:14:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:14:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:14:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:14:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:14:27,897 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 9 iterations. [2018-11-18 16:14:27,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 18.11 04:14:27 ImpRootNode [2018-11-18 16:14:27,928 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-18 16:14:27,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:14:27,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:14:27,928 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:14:27,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:14:24" (3/4) ... [2018-11-18 16:14:27,931 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 16:14:27,985 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_08365c51-52ff-4893-9c5b-ba33e9b4aa29/bin-2019/ukojak/witness.graphml [2018-11-18 16:14:27,986 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:14:27,986 INFO L168 Benchmark]: Toolchain (without parser) took 4491.08 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 295.2 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -137.3 MB). Peak memory consumption was 157.9 MB. Max. memory is 11.5 GB. [2018-11-18 16:14:27,987 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:14:27,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2018-11-18 16:14:27,988 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.81 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:14:27,988 INFO L168 Benchmark]: Boogie Preprocessor took 18.18 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:14:27,988 INFO L168 Benchmark]: RCFGBuilder took 248.44 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: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-11-18 16:14:27,989 INFO L168 Benchmark]: CodeCheck took 3799.08 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 144.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.9 MB). Peak memory consumption was 169.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:14:27,989 INFO L168 Benchmark]: Witness Printer took 57.52 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:14:27,991 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 28 locations, 1 error locations. UNSAFE Result, 3.7s OverallTime, 9 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2688 SDtfs, 2060 SDslu, 1512 SDs, 0 SdLazy, 6522 SolverSat, 1674 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1338 GetRequests, 1180 SyntacticMatches, 36 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5093 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 15835 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 50/78 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L596] CALL, EXPR sll_create(len + 1) [L564] SLL head = ((void *)0); [L565] COND TRUE len > 0 [L566] EXPR, FCALL malloc(sizeof(struct node)) [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] FCALL new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] EXPR, FCALL malloc(sizeof(struct node)) [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] FCALL new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] EXPR, FCALL malloc(sizeof(struct node)) [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] FCALL new_head->next = head [L571] head = new_head [L572] len-- [L565] COND FALSE !(len > 0) [L574] RET return head; [L596] EXPR sll_create(len + 1) [L596] SLL s = sll_create(len + 1); [L597] CALL, EXPR sll_length(s) [L577] int len = 0; [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR, FCALL head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR, FCALL head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR, FCALL head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) [L582] RET return len; [L597] EXPR sll_length(s) [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 331.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.81 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.18 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 248.44 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: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * CodeCheck took 3799.08 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 144.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.9 MB). Peak memory consumption was 169.1 MB. Max. memory is 11.5 GB. * Witness Printer took 57.52 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...