./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d9f9c3b0fdd5428a38e0eab9236fadbdbb3aa880 .......................................................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-10-22 10:17:44,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 10:17:44,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 10:17:44,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 10:17:44,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 10:17:44,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 10:17:44,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 10:17:44,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 10:17:44,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 10:17:44,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 10:17:44,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 10:17:44,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 10:17:44,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 10:17:44,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 10:17:44,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 10:17:44,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 10:17:44,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 10:17:44,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 10:17:44,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 10:17:44,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 10:17:44,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 10:17:44,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 10:17:44,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 10:17:44,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 10:17:44,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 10:17:44,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 10:17:44,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 10:17:44,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 10:17:44,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 10:17:44,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 10:17:44,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 10:17:44,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 10:17:44,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 10:17:44,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 10:17:44,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 10:17:44,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 10:17:44,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 10:17:44,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 10:17:44,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 10:17:44,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 10:17:44,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 10:17:44,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-10-22 10:17:44,335 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 10:17:44,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 10:17:44,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 10:17:44,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-10-22 10:17:44,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 10:17:44,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 10:17:44,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 10:17:44,337 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 10:17:44,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 10:17:44,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 10:17:44,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 10:17:44,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 10:17:44,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 10:17:44,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 10:17:44,339 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 10:17:44,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 10:17:44,339 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 10:17:44,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 10:17:44,339 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-10-22 10:17:44,339 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-10-22 10:17:44,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 10:17:44,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 10:17:44,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-10-22 10:17:44,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 10:17:44,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 10:17:44,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 10:17:44,341 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-10-22 10:17:44,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 10:17:44,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 10:17:44,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9f9c3b0fdd5428a38e0eab9236fadbdbb3aa880 [2019-10-22 10:17:44,366 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 10:17:44,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 10:17:44,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 10:17:44,380 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 10:17:44,381 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 10:17:44,381 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2019-10-22 10:17:44,424 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak/data/11836cf12/d29f8d4f6eb844ee9944bfeccdcd8de1/FLAG9ca10ab4e [2019-10-22 10:17:44,846 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 10:17:44,847 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2019-10-22 10:17:44,857 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak/data/11836cf12/d29f8d4f6eb844ee9944bfeccdcd8de1/FLAG9ca10ab4e [2019-10-22 10:17:45,211 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak/data/11836cf12/d29f8d4f6eb844ee9944bfeccdcd8de1 [2019-10-22 10:17:45,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 10:17:45,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 10:17:45,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 10:17:45,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 10:17:45,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 10:17:45,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:17:45" (1/1) ... [2019-10-22 10:17:45,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64bf6310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:45, skipping insertion in model container [2019-10-22 10:17:45,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:17:45" (1/1) ... [2019-10-22 10:17:45,233 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 10:17:45,279 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 10:17:45,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:17:45,612 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 10:17:45,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:17:45,694 INFO L192 MainTranslator]: Completed translation [2019-10-22 10:17:45,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:45 WrapperNode [2019-10-22 10:17:45,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 10:17:45,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 10:17:45,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 10:17:45,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 10:17:45,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:45" (1/1) ... [2019-10-22 10:17:45,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:45" (1/1) ... [2019-10-22 10:17:45,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 10:17:45,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 10:17:45,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 10:17:45,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 10:17:45,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:45" (1/1) ... [2019-10-22 10:17:45,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:45" (1/1) ... [2019-10-22 10:17:45,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:45" (1/1) ... [2019-10-22 10:17:45,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:45" (1/1) ... [2019-10-22 10:17:45,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:45" (1/1) ... [2019-10-22 10:17:45,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:45" (1/1) ... [2019-10-22 10:17:45,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:45" (1/1) ... [2019-10-22 10:17:45,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 10:17:45,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 10:17:45,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 10:17:45,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 10:17:45,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-10-22 10:17:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 10:17:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 10:17:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 10:17:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 10:17:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 10:17:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 10:17:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 10:17:45,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 10:17:46,395 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 10:17:46,395 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-10-22 10:17:46,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:17:46 BoogieIcfgContainer [2019-10-22 10:17:46,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 10:17:46,397 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-10-22 10:17:46,397 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-10-22 10:17:46,408 INFO L275 PluginConnector]: CodeCheck initialized [2019-10-22 10:17:46,408 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:17:46" (1/1) ... [2019-10-22 10:17:46,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 10:17:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:46,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 27 states and 43 transitions. [2019-10-22 10:17:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 43 transitions. [2019-10-22 10:17:46,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 10:17:46,453 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:46,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 27 states and 39 transitions. [2019-10-22 10:17:46,585 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2019-10-22 10:17:46,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 10:17:46,590 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:46,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 25 states and 37 transitions. [2019-10-22 10:17:46,787 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 37 transitions. [2019-10-22 10:17:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 10:17:46,788 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:47,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 32 states and 45 transitions. [2019-10-22 10:17:47,400 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 45 transitions. [2019-10-22 10:17:47,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 10:17:47,401 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:47,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:48,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:48,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 35 states and 52 transitions. [2019-10-22 10:17:48,414 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 52 transitions. [2019-10-22 10:17:48,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 10:17:48,418 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 37 states and 53 transitions. [2019-10-22 10:17:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 53 transitions. [2019-10-22 10:17:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 10:17:48,830 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 27 states and 36 transitions. [2019-10-22 10:17:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2019-10-22 10:17:49,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 10:17:49,728 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 37 states and 51 transitions. [2019-10-22 10:17:51,467 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2019-10-22 10:17:51,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 10:17:51,467 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 51 states and 80 transitions. [2019-10-22 10:17:56,745 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 80 transitions. [2019-10-22 10:17:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 10:17:56,745 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 10:17:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 52 states and 81 transitions. [2019-10-22 10:17:57,126 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 81 transitions. [2019-10-22 10:17:57,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 10:17:57,126 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:59,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 54 states and 88 transitions. [2019-10-22 10:17:59,511 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 88 transitions. [2019-10-22 10:17:59,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 10:17:59,512 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:18:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:18:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:18:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 70 states and 137 transitions. [2019-10-22 10:18:10,074 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 137 transitions. [2019-10-22 10:18:10,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 10:18:10,075 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:18:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:18:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:18:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:18:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:18:10,410 WARN L489 CodeCheckObserver]: This program is UNSAFE, Check terminated with 12 iterations. [2019-10-22 10:18:10,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 22.10 10:18:10 ImpRootNode [2019-10-22 10:18:10,458 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-10-22 10:18:10,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 10:18:10,459 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 10:18:10,459 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 10:18:10,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:17:46" (3/4) ... [2019-10-22 10:18:10,462 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 10:18:10,555 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d080b5bc-e0fc-4469-b0c4-e16a35a952ae/bin/ukojak/witness.graphml [2019-10-22 10:18:10,555 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 10:18:10,558 INFO L168 Benchmark]: Toolchain (without parser) took 25342.30 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 363.9 MB). Free memory was 939.0 MB in the beginning and 960.9 MB in the end (delta: -21.9 MB). Peak memory consumption was 342.0 MB. Max. memory is 11.5 GB. [2019-10-22 10:18:10,558 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 10:18:10,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-10-22 10:18:10,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.11 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. [2019-10-22 10:18:10,560 INFO L168 Benchmark]: Boogie Preprocessor took 27.38 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 10:18:10,561 INFO L168 Benchmark]: RCFGBuilder took 631.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2019-10-22 10:18:10,562 INFO L168 Benchmark]: CodeCheck took 24061.11 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 227.0 MB). Free memory was 1.1 GB in the beginning and 964.3 MB in the end (delta: 105.6 MB). Peak memory consumption was 332.6 MB. Max. memory is 11.5 GB. [2019-10-22 10:18:10,562 INFO L168 Benchmark]: Witness Printer took 96.62 ms. Allocated memory is still 1.4 GB. Free memory was 964.3 MB in the beginning and 960.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-10-22 10:18:10,567 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 27 locations, 4 error locations. Result: UNSAFE, OverallTime: 23.9s, OverallIterations: 12, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 14464 SDtfs, 11770 SDslu, 12766 SDs, 0 SdLazy, 34982 SolverSat, 9686 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1517 GetRequests, 1232 SyntacticMatches, 47 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24370 ImplicationChecksByTransitivity, 20.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 54556 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 7/38 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 1039]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* null = malloc(sizeof(SLL)); [L995] null->colour = BLACK [L996] null->next = ((void*)0) [L998] SLL* list = malloc(sizeof(SLL)); [L999] list->next = null [L1000] list->colour = BLACK [L1002] SLL* end = list; [L1005] COND TRUE __VERIFIER_nondet_int() [L1008] end->next = malloc(sizeof(SLL)) [L1009] EXPR end->next [L1009] end = end->next [L1010] end->next = null [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1018] end->colour = RED [L1019] end->next = malloc(sizeof(SLL)) [L1020] EXPR end->next [L1020] end = end->next [L1021] end->next = null [L1022] end->colour = BLACK [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list [L1030] COND FALSE !(!(null != end)) [L1031] EXPR end->colour [L1031] COND FALSE !(!(BLACK == end->colour)) [L1033] COND TRUE null != end [L1035] EXPR end->colour [L1035] COND FALSE !(RED == end->colour) [L1042] EXPR end->next [L1042] end = end->next [L1033] COND TRUE null != end [L1035] EXPR end->colour [L1035] COND TRUE RED == end->colour [L1037] EXPR end->next [L1037] end = end->next [L1038] COND FALSE !(!(null != end)) [L1039] EXPR end->colour [L1039] COND TRUE !(BLACK != end->colour) [L1039] __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 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 476.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.11 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 27.38 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 631.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. * CodeCheck took 24061.11 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 227.0 MB). Free memory was 1.1 GB in the beginning and 964.3 MB in the end (delta: 105.6 MB). Peak memory consumption was 332.6 MB. Max. memory is 11.5 GB. * Witness Printer took 96.62 ms. Allocated memory is still 1.4 GB. Free memory was 964.3 MB in the beginning and 960.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...