./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/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 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 0.1.23-1dbac8b [2018-11-10 12:24:14,544 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 12:24:14,545 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 12:24:14,553 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 12:24:14,553 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 12:24:14,554 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 12:24:14,555 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 12:24:14,556 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 12:24:14,557 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 12:24:14,558 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 12:24:14,559 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 12:24:14,559 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 12:24:14,560 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 12:24:14,560 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 12:24:14,561 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 12:24:14,561 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 12:24:14,562 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 12:24:14,563 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 12:24:14,564 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 12:24:14,565 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 12:24:14,566 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 12:24:14,567 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 12:24:14,569 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 12:24:14,569 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 12:24:14,569 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 12:24:14,570 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 12:24:14,570 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 12:24:14,571 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 12:24:14,571 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 12:24:14,572 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 12:24:14,572 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 12:24:14,573 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 12:24:14,573 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 12:24:14,573 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 12:24:14,574 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 12:24:14,574 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 12:24:14,575 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-10 12:24:14,583 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 12:24:14,583 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 12:24:14,584 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 12:24:14,584 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 12:24:14,585 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 12:24:14,585 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 12:24:14,585 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 12:24:14,585 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 12:24:14,585 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 12:24:14,585 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 12:24:14,586 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 12:24:14,586 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 12:24:14,586 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 12:24:14,586 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 12:24:14,586 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 12:24:14,586 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 12:24:14,586 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 12:24:14,587 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-10 12:24:14,587 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-10 12:24:14,587 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 12:24:14,587 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 12:24:14,587 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-10 12:24:14,587 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 12:24:14,588 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 12:24:14,588 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 12:24:14,588 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-10 12:24:14,588 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 12:24:14,588 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 12:24:14,588 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_413d0076-6332-432d-998f-df334b065439/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 -> d9f9c3b0fdd5428a38e0eab9236fadbdbb3aa880 [2018-11-10 12:24:14,614 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 12:24:14,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 12:24:14,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 12:24:14,628 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 12:24:14,628 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 12:24:14,629 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/bin-2019/ukojak/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i [2018-11-10 12:24:14,676 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/bin-2019/ukojak/data/ebb4430fc/a614d60a0d67431689b60eb175837c39/FLAGc7580eea1 [2018-11-10 12:24:15,060 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 12:24:15,061 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i [2018-11-10 12:24:15,070 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/bin-2019/ukojak/data/ebb4430fc/a614d60a0d67431689b60eb175837c39/FLAGc7580eea1 [2018-11-10 12:24:15,080 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/bin-2019/ukojak/data/ebb4430fc/a614d60a0d67431689b60eb175837c39 [2018-11-10 12:24:15,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 12:24:15,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 12:24:15,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 12:24:15,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 12:24:15,088 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 12:24:15,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:24:15" (1/1) ... [2018-11-10 12:24:15,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4943cf3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:24:15, skipping insertion in model container [2018-11-10 12:24:15,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:24:15" (1/1) ... [2018-11-10 12:24:15,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 12:24:15,135 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 12:24:15,343 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:24:15,349 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 12:24:15,380 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:24:15,409 INFO L193 MainTranslator]: Completed translation [2018-11-10 12:24:15,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:24:15 WrapperNode [2018-11-10 12:24:15,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 12:24:15,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 12:24:15,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 12:24:15,411 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 12:24:15,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:24:15" (1/1) ... [2018-11-10 12:24:15,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:24:15" (1/1) ... [2018-11-10 12:24:15,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 12:24:15,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 12:24:15,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 12:24:15,486 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 12:24:15,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:24:15" (1/1) ... [2018-11-10 12:24:15,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:24:15" (1/1) ... [2018-11-10 12:24:15,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:24:15" (1/1) ... [2018-11-10 12:24:15,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:24:15" (1/1) ... [2018-11-10 12:24:15,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:24:15" (1/1) ... [2018-11-10 12:24:15,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:24:15" (1/1) ... [2018-11-10 12:24:15,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:24:15" (1/1) ... [2018-11-10 12:24:15,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 12:24:15,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 12:24:15,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 12:24:15,507 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 12:24:15,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:24:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-10 12:24:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 12:24:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 12:24:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 12:24:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 12:24:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 12:24:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 12:24:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 12:24:15,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 12:24:16,124 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 12:24:16,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:24:16 BoogieIcfgContainer [2018-11-10 12:24:16,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 12:24:16,125 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-10 12:24:16,125 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-10 12:24:16,135 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-10 12:24:16,135 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:24:16" (1/1) ... [2018-11-10 12:24:16,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:24:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:24:16,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 32 states and 50 transitions. [2018-11-10 12:24:16,183 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2018-11-10 12:24:16,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-10 12:24:16,185 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:24:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:24:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:24:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:24:16,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 32 states and 46 transitions. [2018-11-10 12:24:16,297 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-11-10 12:24:16,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-10 12:24:16,297 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:24:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:24:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:24:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:24:16,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 30 states and 44 transitions. [2018-11-10 12:24:16,443 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2018-11-10 12:24:16,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 12:24:16,444 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:24:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:24:16,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:24:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:24:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 38 states and 52 transitions. [2018-11-10 12:24:16,874 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2018-11-10 12:24:16,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 12:24:16,875 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:24:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:24:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:24:17,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:24:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 28 states and 39 transitions. [2018-11-10 12:24:17,257 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2018-11-10 12:24:17,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 12:24:17,257 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:24:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:24:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:24:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:24:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 31 states and 40 transitions. [2018-11-10 12:24:17,480 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2018-11-10 12:24:17,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-10 12:24:17,480 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:24:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:24:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:24:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:24:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 46 states and 62 transitions. [2018-11-10 12:24:18,640 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2018-11-10 12:24:18,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 12:24:18,640 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:24:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:24:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:24:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:24:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 66 states and 100 transitions. [2018-11-10 12:24:23,169 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 100 transitions. [2018-11-10 12:24:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 12:24:23,172 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:24:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:24:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 12:24:23,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:24:23,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 68 states and 102 transitions. [2018-11-10 12:24:23,676 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 102 transitions. [2018-11-10 12:24:23,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 12:24:23,677 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:24:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:24:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:24:28,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:24:28,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 79 states and 125 transitions. [2018-11-10 12:24:28,420 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 125 transitions. [2018-11-10 12:24:28,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-10 12:24:28,420 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:24:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:24:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:24:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:24:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:24:28,565 WARN L496 CodeCheckObserver]: This program is UNSAFE, Check terminated with 10 iterations. [2018-11-10 12:24:28,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 10.11 12:24:28 ImpRootNode [2018-11-10 12:24:28,600 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-10 12:24:28,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 12:24:28,600 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 12:24:28,600 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 12:24:28,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:24:16" (3/4) ... [2018-11-10 12:24:28,603 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 12:24:28,658 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_413d0076-6332-432d-998f-df334b065439/bin-2019/ukojak/witness.graphml [2018-11-10 12:24:28,658 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 12:24:28,659 INFO L168 Benchmark]: Toolchain (without parser) took 13575.59 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 418.4 MB). Free memory was 956.6 MB in the beginning and 1.2 GB in the end (delta: -208.5 MB). Peak memory consumption was 209.8 MB. Max. memory is 11.5 GB. [2018-11-10 12:24:28,660 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:24:28,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.07 ms. Allocated memory is still 1.0 GB. Free memory was 956.6 MB in the beginning and 932.4 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-11-10 12:24:28,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 932.4 MB in the beginning and 1.2 GB in the end (delta: -234.6 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-11-10 12:24:28,661 INFO L168 Benchmark]: Boogie Preprocessor took 20.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-10 12:24:28,662 INFO L168 Benchmark]: RCFGBuilder took 618.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 69.8 MB). Peak memory consumption was 69.8 MB. Max. memory is 11.5 GB. [2018-11-10 12:24:28,662 INFO L168 Benchmark]: CodeCheck took 12475.07 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 245.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -71.2 MB). Peak memory consumption was 174.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:24:28,663 INFO L168 Benchmark]: Witness Printer took 58.29 ms. Allocated memory is still 1.4 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:24:28,665 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, 79 locations, 4 error locations. UNSAFE Result, 12.4s OverallTime, 10 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4496 SDtfs, 4044 SDslu, 4808 SDs, 0 SdLazy, 8852 SolverSat, 2740 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1292 GetRequests, 1071 SyntacticMatches, 37 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14013 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 49449 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 9/29 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: 1039]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] EXPR, FCALL malloc(sizeof(SLL)) [L994] SLL* null = malloc(sizeof(SLL)); [L995] FCALL null->colour = BLACK [L996] FCALL null->next = ((void*)0) [L998] EXPR, FCALL malloc(sizeof(SLL)) [L998] SLL* list = malloc(sizeof(SLL)); [L999] FCALL list->next = null [L1000] FCALL list->colour = BLACK [L1002] SLL* end = list; [L1005] COND TRUE __VERIFIER_nondet_int() [L1008] EXPR, FCALL malloc(sizeof(SLL)) [L1008] FCALL end->next = malloc(sizeof(SLL)) [L1009] EXPR, FCALL end->next [L1009] end = end->next [L1010] FCALL end->next = null [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1018] FCALL end->colour = RED [L1019] EXPR, FCALL malloc(sizeof(SLL)) [L1019] FCALL end->next = malloc(sizeof(SLL)) [L1020] EXPR, FCALL end->next [L1020] end = end->next [L1021] FCALL end->next = null [L1022] FCALL end->colour = BLACK [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list [L1030] COND FALSE !(!(null != end)) [L1030] COND FALSE !(0) [L1031] EXPR, FCALL end->colour [L1031] COND FALSE !(!(BLACK == end->colour)) [L1031] COND FALSE !(0) [L1033] COND TRUE null != end [L1035] EXPR, FCALL end->colour [L1035] COND FALSE !(RED == end->colour) [L1042] EXPR, FCALL end->next [L1042] end = end->next [L1033] COND TRUE null != end [L1035] EXPR, FCALL end->colour [L1035] COND TRUE RED == end->colour [L1037] EXPR, FCALL end->next [L1037] end = end->next [L1038] COND FALSE !(!(null != end)) [L1038] COND FALSE !(0) [L1039] EXPR, FCALL 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 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 325.07 ms. Allocated memory is still 1.0 GB. Free memory was 956.6 MB in the beginning and 932.4 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 75.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 932.4 MB in the beginning and 1.2 GB in the end (delta: -234.6 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 618.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 69.8 MB). Peak memory consumption was 69.8 MB. Max. memory is 11.5 GB. * CodeCheck took 12475.07 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 245.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -71.2 MB). Peak memory consumption was 174.7 MB. Max. memory is 11.5 GB. * Witness Printer took 58.29 ms. Allocated memory is still 1.4 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...