./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c345811e-9e5e-4312-b05f-798c07a8cf41/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c345811e-9e5e-4312-b05f-798c07a8cf41/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c345811e-9e5e-4312-b05f-798c07a8cf41/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c345811e-9e5e-4312-b05f-798c07a8cf41/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_c345811e-9e5e-4312-b05f-798c07a8cf41/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c345811e-9e5e-4312-b05f-798c07a8cf41/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 2a99c5e1922c5e2d2ce50e982def02dab2dbd81e ....................................................................................................................................................................................................................................................................................................... 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 0.1.23-635dfa2 [2018-12-09 01:41:58,967 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:41:58,968 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:41:58,974 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:41:58,974 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:41:58,975 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:41:58,975 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:41:58,977 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:41:58,978 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:41:58,979 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:41:58,980 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:41:58,980 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:41:58,980 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:41:58,981 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:41:58,982 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:41:58,982 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:41:58,983 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:41:58,984 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:41:58,986 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:41:58,987 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:41:58,988 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:41:58,989 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:41:58,990 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:41:58,990 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:41:58,990 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:41:58,991 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:41:58,991 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:41:58,992 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:41:58,992 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:41:58,993 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:41:58,993 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:41:58,993 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:41:58,993 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:41:58,993 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:41:58,995 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:41:58,995 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:41:58,995 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c345811e-9e5e-4312-b05f-798c07a8cf41/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-12-09 01:41:59,006 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:41:59,006 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:41:59,007 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:41:59,007 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-12-09 01:41:59,007 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 01:41:59,007 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 01:41:59,007 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:41:59,008 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:41:59,008 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:41:59,008 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:41:59,008 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:41:59,008 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:41:59,008 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:41:59,008 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:41:59,009 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:41:59,009 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:41:59,009 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 01:41:59,009 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:41:59,009 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-09 01:41:59,009 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-09 01:41:59,009 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:41:59,010 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:41:59,010 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-09 01:41:59,010 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:41:59,010 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:41:59,010 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:41:59,010 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-09 01:41:59,010 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:41:59,010 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:41:59,011 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_c345811e-9e5e-4312-b05f-798c07a8cf41/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 -> 2a99c5e1922c5e2d2ce50e982def02dab2dbd81e [2018-12-09 01:41:59,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:41:59,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:41:59,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:41:59,043 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:41:59,043 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:41:59,044 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c345811e-9e5e-4312-b05f-798c07a8cf41/bin-2019/ukojak/../../sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-12-09 01:41:59,084 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c345811e-9e5e-4312-b05f-798c07a8cf41/bin-2019/ukojak/data/a3599db82/614dfe10f684464fa0e007d9f7cb2586/FLAGc112d96d1 [2018-12-09 01:41:59,517 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:41:59,517 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c345811e-9e5e-4312-b05f-798c07a8cf41/sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-12-09 01:41:59,525 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c345811e-9e5e-4312-b05f-798c07a8cf41/bin-2019/ukojak/data/a3599db82/614dfe10f684464fa0e007d9f7cb2586/FLAGc112d96d1 [2018-12-09 01:41:59,533 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c345811e-9e5e-4312-b05f-798c07a8cf41/bin-2019/ukojak/data/a3599db82/614dfe10f684464fa0e007d9f7cb2586 [2018-12-09 01:41:59,534 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:41:59,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:41:59,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:41:59,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:41:59,538 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:41:59,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:41:59" (1/1) ... [2018-12-09 01:41:59,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c140d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:41:59, skipping insertion in model container [2018-12-09 01:41:59,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:41:59" (1/1) ... [2018-12-09 01:41:59,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:41:59,563 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:41:59,707 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:41:59,712 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:41:59,782 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:41:59,806 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:41:59,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:41:59 WrapperNode [2018-12-09 01:41:59,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:41:59,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:41:59,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:41:59,807 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:41:59,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:41:59" (1/1) ... [2018-12-09 01:41:59,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:41:59" (1/1) ... [2018-12-09 01:41:59,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:41:59,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:41:59,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:41:59,837 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:41:59,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:41:59" (1/1) ... [2018-12-09 01:41:59,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:41:59" (1/1) ... [2018-12-09 01:41:59,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:41:59" (1/1) ... [2018-12-09 01:41:59,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:41:59" (1/1) ... [2018-12-09 01:41:59,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:41:59" (1/1) ... [2018-12-09 01:41:59,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:41:59" (1/1) ... [2018-12-09 01:41:59,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:41:59" (1/1) ... [2018-12-09 01:41:59,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:41:59,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:41:59,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:41:59,856 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:41:59,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:41:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c345811e-9e5e-4312-b05f-798c07a8cf41/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 [2018-12-09 01:41:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 01:41:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 01:41:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 01:41:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 01:41:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:41:59,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:42:00,069 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:42:00,069 INFO L280 CfgBuilder]: Removed 16 assue(true) statements. [2018-12-09 01:42:00,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:42:00 BoogieIcfgContainer [2018-12-09 01:42:00,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:42:00,070 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-09 01:42:00,070 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-09 01:42:00,076 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-09 01:42:00,076 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:42:00" (1/1) ... [2018-12-09 01:42:00,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:42:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 01:42:00,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 14 states and 20 transitions. [2018-12-09 01:42:00,104 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 20 transitions. [2018-12-09 01:42:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 01:42:00,105 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 01:42:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:42:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:42:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 01:42:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 14 states and 18 transitions. [2018-12-09 01:42:00,170 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-12-09 01:42:00,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 01:42:00,171 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 01:42:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:42:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:42:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 01:42:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 15 states and 20 transitions. [2018-12-09 01:42:00,246 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2018-12-09 01:42:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 01:42:00,247 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 01:42:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:42:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:42:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 01:42:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 15 states and 21 transitions. [2018-12-09 01:42:00,392 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2018-12-09 01:42:00,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 01:42:00,393 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 01:42:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:42:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 01:42:00,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 01:42:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 17 states and 23 transitions. [2018-12-09 01:42:00,537 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2018-12-09 01:42:00,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 01:42:00,538 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 01:42:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:42:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:42:00,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 01:42:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2018-12-09 01:42:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-12-09 01:42:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 01:42:00,849 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 01:42:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:42:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-09 01:42:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 01:42:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 20 states and 26 transitions. [2018-12-09 01:42:01,090 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2018-12-09 01:42:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 01:42:01,090 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 01:42:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:42:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-09 01:42:02,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 01:42:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 34 states and 50 transitions. [2018-12-09 01:42:02,636 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 50 transitions. [2018-12-09 01:42:02,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 01:42:02,637 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 01:42:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:42:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:42:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:42:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:42:02,728 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2018-12-09 01:42:02,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.12 01:42:02 ImpRootNode [2018-12-09 01:42:02,756 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-09 01:42:02,757 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:42:02,757 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:42:02,757 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:42:02,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:42:00" (3/4) ... [2018-12-09 01:42:02,759 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 01:42:02,799 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c345811e-9e5e-4312-b05f-798c07a8cf41/bin-2019/ukojak/witness.graphml [2018-12-09 01:42:02,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:42:02,800 INFO L168 Benchmark]: Toolchain (without parser) took 3264.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.0 MB). Free memory was 956.0 MB in the beginning and 807.0 MB in the end (delta: 149.0 MB). Peak memory consumption was 355.1 MB. Max. memory is 11.5 GB. [2018-12-09 01:42:02,801 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:42:02,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -160.4 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2018-12-09 01:42:02,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:42:02,802 INFO L168 Benchmark]: Boogie Preprocessor took 18.67 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-12-09 01:42:02,802 INFO L168 Benchmark]: RCFGBuilder took 214.14 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2018-12-09 01:42:02,802 INFO L168 Benchmark]: CodeCheck took 2686.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 807.0 MB in the end (delta: 276.8 MB). Peak memory consumption was 350.2 MB. Max. memory is 11.5 GB. [2018-12-09 01:42:02,803 INFO L168 Benchmark]: Witness Printer took 42.59 ms. Allocated memory is still 1.2 GB. Free memory is still 807.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:42:02,805 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, 23 locations, 1 error locations. UNSAFE Result, 2.6s OverallTime, 8 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 960 SDtfs, 366 SDslu, 136 SDs, 0 SdLazy, 2412 SolverSat, 790 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 696 GetRequests, 584 SyntacticMatches, 10 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3139 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 2946 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 16/27 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()) [L564] SLL head = ((void *)0); [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND FALSE !(len > 0) [L574] return head; [L596] SLL s = sll_create(len + 1); [L577] int len = 0; [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) [L582] return len; [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 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 270.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -160.4 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.67 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 214.14 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * CodeCheck took 2686.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 807.0 MB in the end (delta: 276.8 MB). Peak memory consumption was 350.2 MB. Max. memory is 11.5 GB. * Witness Printer took 42.59 ms. Allocated memory is still 1.2 GB. Free memory is still 807.0 MB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...