./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.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_13fed832-0e29-49f3-9b9b-579513a735dd/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_13fed832-0e29-49f3-9b9b-579513a735dd/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_13fed832-0e29-49f3-9b9b-579513a735dd/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_13fed832-0e29-49f3-9b9b-579513a735dd/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_13fed832-0e29-49f3-9b9b-579513a735dd/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_13fed832-0e29-49f3-9b9b-579513a735dd/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 1f270b702de634d3ad2ee5a400388c6410a4cf10 .............................................................................................................................................................................................................................................................. 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 08:00:51,494 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 08:00:51,495 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 08:00:51,504 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 08:00:51,504 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 08:00:51,505 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 08:00:51,505 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 08:00:51,507 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 08:00:51,508 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 08:00:51,508 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 08:00:51,509 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 08:00:51,509 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 08:00:51,510 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 08:00:51,511 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 08:00:51,511 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 08:00:51,512 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 08:00:51,513 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 08:00:51,514 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 08:00:51,515 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 08:00:51,516 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 08:00:51,517 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 08:00:51,518 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 08:00:51,520 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 08:00:51,520 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 08:00:51,520 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 08:00:51,521 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 08:00:51,522 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 08:00:51,522 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 08:00:51,523 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 08:00:51,523 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 08:00:51,524 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 08:00:51,524 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 08:00:51,524 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 08:00:51,524 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 08:00:51,525 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 08:00:51,525 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 08:00:51,526 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_13fed832-0e29-49f3-9b9b-579513a735dd/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-12-09 08:00:51,536 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 08:00:51,536 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 08:00:51,537 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 08:00:51,537 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-12-09 08:00:51,537 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 08:00:51,537 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 08:00:51,538 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 08:00:51,538 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 08:00:51,538 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 08:00:51,538 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 08:00:51,538 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 08:00:51,538 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 08:00:51,538 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 08:00:51,538 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 08:00:51,538 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 08:00:51,539 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 08:00:51,539 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 08:00:51,539 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 08:00:51,539 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-09 08:00:51,539 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-09 08:00:51,539 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 08:00:51,539 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 08:00:51,540 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-09 08:00:51,540 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 08:00:51,540 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 08:00:51,540 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 08:00:51,540 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-09 08:00:51,540 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 08:00:51,540 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 08:00:51,540 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_13fed832-0e29-49f3-9b9b-579513a735dd/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 -> 1f270b702de634d3ad2ee5a400388c6410a4cf10 [2018-12-09 08:00:51,563 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 08:00:51,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 08:00:51,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 08:00:51,572 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 08:00:51,573 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 08:00:51,573 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_13fed832-0e29-49f3-9b9b-579513a735dd/bin-2019/ukojak/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-12-09 08:00:51,608 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13fed832-0e29-49f3-9b9b-579513a735dd/bin-2019/ukojak/data/b8e5baffb/d46e37d1ef324eecbba5b82aa38b9ee9/FLAG8f8924adf [2018-12-09 08:00:52,014 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 08:00:52,015 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_13fed832-0e29-49f3-9b9b-579513a735dd/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-12-09 08:00:52,020 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13fed832-0e29-49f3-9b9b-579513a735dd/bin-2019/ukojak/data/b8e5baffb/d46e37d1ef324eecbba5b82aa38b9ee9/FLAG8f8924adf [2018-12-09 08:00:52,028 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_13fed832-0e29-49f3-9b9b-579513a735dd/bin-2019/ukojak/data/b8e5baffb/d46e37d1ef324eecbba5b82aa38b9ee9 [2018-12-09 08:00:52,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 08:00:52,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 08:00:52,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 08:00:52,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 08:00:52,033 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 08:00:52,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:00:52" (1/1) ... [2018-12-09 08:00:52,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6ee20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:00:52, skipping insertion in model container [2018-12-09 08:00:52,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:00:52" (1/1) ... [2018-12-09 08:00:52,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 08:00:52,059 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 08:00:52,204 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 08:00:52,245 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 08:00:52,273 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 08:00:52,303 INFO L195 MainTranslator]: Completed translation [2018-12-09 08:00:52,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:00:52 WrapperNode [2018-12-09 08:00:52,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 08:00:52,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 08:00:52,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 08:00:52,304 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 08:00:52,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:00:52" (1/1) ... [2018-12-09 08:00:52,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:00:52" (1/1) ... [2018-12-09 08:00:52,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 08:00:52,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 08:00:52,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 08:00:52,333 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 08:00:52,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:00:52" (1/1) ... [2018-12-09 08:00:52,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:00:52" (1/1) ... [2018-12-09 08:00:52,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:00:52" (1/1) ... [2018-12-09 08:00:52,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:00:52" (1/1) ... [2018-12-09 08:00:52,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:00:52" (1/1) ... [2018-12-09 08:00:52,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:00:52" (1/1) ... [2018-12-09 08:00:52,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:00:52" (1/1) ... [2018-12-09 08:00:52,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 08:00:52,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 08:00:52,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 08:00:52,351 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 08:00:52,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:00:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13fed832-0e29-49f3-9b9b-579513a735dd/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 08:00:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 08:00:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 08:00:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 08:00:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 08:00:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 08:00:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 08:00:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 08:00:52,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 08:00:52,710 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 08:00:52,710 INFO L280 CfgBuilder]: Removed 13 assue(true) statements. [2018-12-09 08:00:52,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:00:52 BoogieIcfgContainer [2018-12-09 08:00:52,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 08:00:52,711 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-09 08:00:52,711 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-09 08:00:52,718 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-09 08:00:52,718 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:00:52" (1/1) ... [2018-12-09 08:00:52,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:00:52,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 08:00:52,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 22 states and 34 transitions. [2018-12-09 08:00:52,747 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 34 transitions. [2018-12-09 08:00:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-09 08:00:52,749 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 08:00:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:00:52,826 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 08:00:52,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 08:00:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 22 states and 30 transitions. [2018-12-09 08:00:52,833 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2018-12-09 08:00:52,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-09 08:00:52,833 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 08:00:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:00:52,871 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 08:00:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 08:00:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 20 states and 28 transitions. [2018-12-09 08:00:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-12-09 08:00:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 08:00:52,892 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 08:00:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:00:52,984 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 08:00:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 08:00:53,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 27 states and 35 transitions. [2018-12-09 08:00:53,467 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2018-12-09 08:00:53,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 08:00:53,468 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 08:00:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:00:53,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 08:00:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 08:00:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 29 states and 40 transitions. [2018-12-09 08:00:53,907 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2018-12-09 08:00:53,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 08:00:53,909 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 08:00:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 08:00:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 08:00:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 08:00:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 08:00:53,960 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 5 iterations. [2018-12-09 08:00:53,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.12 08:00:53 ImpRootNode [2018-12-09 08:00:53,978 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-09 08:00:53,978 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 08:00:53,978 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 08:00:53,979 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 08:00:53,979 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:00:52" (3/4) ... [2018-12-09 08:00:53,980 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 08:00:54,009 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_13fed832-0e29-49f3-9b9b-579513a735dd/bin-2019/ukojak/witness.graphml [2018-12-09 08:00:54,009 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 08:00:54,010 INFO L168 Benchmark]: Toolchain (without parser) took 1979.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 954.9 MB in the beginning and 935.5 MB in the end (delta: 19.4 MB). Peak memory consumption was 162.0 MB. Max. memory is 11.5 GB. [2018-12-09 08:00:54,011 INFO L168 Benchmark]: CDTParser took 0.10 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 08:00:54,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 954.9 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-12-09 08:00:54,011 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.56 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 08:00:54,012 INFO L168 Benchmark]: Boogie Preprocessor took 18.41 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-12-09 08:00:54,012 INFO L168 Benchmark]: RCFGBuilder took 359.48 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: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 11.5 GB. [2018-12-09 08:00:54,013 INFO L168 Benchmark]: CodeCheck took 1267.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 935.5 MB in the end (delta: 142.0 MB). Peak memory consumption was 142.0 MB. Max. memory is 11.5 GB. [2018-12-09 08:00:54,013 INFO L168 Benchmark]: Witness Printer took 30.89 ms. Allocated memory is still 1.2 GB. Free memory is still 935.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 08:00:54,015 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, 29 locations, 3 error locations. UNSAFE Result, 1.2s OverallTime, 5 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 108 SDtfs, 84 SDslu, 116 SDs, 0 SdLazy, 178 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 217 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1901 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 0/2 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: 1040]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* list = malloc(sizeof(SLL)); [L995] list->next = ((void*)0) [L996] list->prev = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end = ((void*)0) [L1026] end = list [L1029] COND FALSE !(!(((void*)0) != end)) [L1030] EXPR end->colour [L1030] COND FALSE !(!(BLACK == end->colour)) [L1032] COND TRUE ((void*)0) != end [L1034] EXPR end->colour [L1034] COND FALSE !(RED == end->colour) [L1040] EXPR end->next [L1040] COND TRUE !(end->next) [L1040] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 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 272.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 954.9 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.56 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 18.41 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 359.48 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: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 11.5 GB. * CodeCheck took 1267.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 935.5 MB in the end (delta: 142.0 MB). Peak memory consumption was 142.0 MB. Max. memory is 11.5 GB. * Witness Printer took 30.89 ms. Allocated memory is still 1.2 GB. Free memory is still 935.5 MB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...