./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/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 8b87efc31cc381b9fe84243511097e1307d2087b ............................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 08:56:59,456 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:56:59,457 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:56:59,464 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:56:59,464 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:56:59,465 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:56:59,465 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:56:59,466 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:56:59,467 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:56:59,468 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:56:59,469 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:56:59,469 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:56:59,469 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:56:59,470 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:56:59,471 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:56:59,471 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:56:59,472 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:56:59,473 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:56:59,474 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:56:59,475 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:56:59,476 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:56:59,476 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:56:59,477 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:56:59,478 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:56:59,478 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:56:59,478 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:56:59,479 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:56:59,480 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:56:59,480 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:56:59,481 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:56:59,481 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:56:59,482 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:56:59,482 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:56:59,482 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:56:59,483 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:56:59,483 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:56:59,483 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-18 08:56:59,491 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:56:59,491 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:56:59,491 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:56:59,492 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 08:56:59,492 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:56:59,492 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:56:59,492 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:56:59,492 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:56:59,492 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:56:59,493 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:56:59,493 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:56:59,493 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:56:59,493 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:56:59,493 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:56:59,493 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:56:59,493 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:56:59,493 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:56:59,493 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:56:59,494 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-18 08:56:59,494 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-18 08:56:59,498 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:56:59,498 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:56:59,498 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 08:56:59,498 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:56:59,499 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:56:59,499 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:56:59,499 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-18 08:56:59,499 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:56:59,499 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 08:56:59,499 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_4c58f882-d5d8-4799-a477-9030d920c9fc/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 -> 8b87efc31cc381b9fe84243511097e1307d2087b [2018-11-18 08:56:59,523 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:56:59,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:56:59,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:56:59,535 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:56:59,536 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:56:59,536 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/bin-2019/ukojak/../../sv-benchmarks/c/list-ext3-properties/dll_nullified_false-unreach-call_false-valid-memcleanup.i [2018-11-18 08:56:59,576 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/bin-2019/ukojak/data/30be84721/c6de379c6de8430d97e436379d93c48b/FLAG7970201ec [2018-11-18 08:57:00,022 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:57:00,022 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/sv-benchmarks/c/list-ext3-properties/dll_nullified_false-unreach-call_false-valid-memcleanup.i [2018-11-18 08:57:00,030 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/bin-2019/ukojak/data/30be84721/c6de379c6de8430d97e436379d93c48b/FLAG7970201ec [2018-11-18 08:57:00,041 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/bin-2019/ukojak/data/30be84721/c6de379c6de8430d97e436379d93c48b [2018-11-18 08:57:00,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:57:00,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 08:57:00,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:57:00,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:57:00,046 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:57:00,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:57:00" (1/1) ... [2018-11-18 08:57:00,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1578e2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:00, skipping insertion in model container [2018-11-18 08:57:00,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:57:00" (1/1) ... [2018-11-18 08:57:00,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:57:00,081 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:57:00,276 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:57:00,284 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:57:00,370 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:57:00,393 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:57:00,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:00 WrapperNode [2018-11-18 08:57:00,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:57:00,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 08:57:00,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 08:57:00,394 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 08:57:00,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:00" (1/1) ... [2018-11-18 08:57:00,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:00" (1/1) ... [2018-11-18 08:57:00,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 08:57:00,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:57:00,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:57:00,424 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:57:00,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:00" (1/1) ... [2018-11-18 08:57:00,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:00" (1/1) ... [2018-11-18 08:57:00,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:00" (1/1) ... [2018-11-18 08:57:00,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:00" (1/1) ... [2018-11-18 08:57:00,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:00" (1/1) ... [2018-11-18 08:57:00,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:00" (1/1) ... [2018-11-18 08:57:00,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:00" (1/1) ... [2018-11-18 08:57:00,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:57:00,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:57:00,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:57:00,442 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:57:00,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 08:57:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:57:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 08:57:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 08:57:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 08:57:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 08:57:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:57:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:57:00,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:57:00,811 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:57:00,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:57:00 BoogieIcfgContainer [2018-11-18 08:57:00,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:57:00,812 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-18 08:57:00,812 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-18 08:57:00,822 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-18 08:57:00,822 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:57:00" (1/1) ... [2018-11-18 08:57:00,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:57:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 08:57:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2018-11-18 08:57:00,859 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-11-18 08:57:00,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-18 08:57:00,861 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 08:57:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:57:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:57:00,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 08:57:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2018-11-18 08:57:00,935 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2018-11-18 08:57:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-18 08:57:00,935 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 08:57:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:57:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:57:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 08:57:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 20 states and 25 transitions. [2018-11-18 08:57:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2018-11-18 08:57:01,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 08:57:01,006 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 08:57:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:57:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:57:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 08:57:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 24 states and 31 transitions. [2018-11-18 08:57:01,120 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2018-11-18 08:57:01,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 08:57:01,121 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 08:57:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:57:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:57:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 08:57:01,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 28 states and 36 transitions. [2018-11-18 08:57:01,227 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2018-11-18 08:57:01,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 08:57:01,228 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 08:57:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:57:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:57:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 08:57:01,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 32 states and 41 transitions. [2018-11-18 08:57:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2018-11-18 08:57:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 08:57:01,354 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 08:57:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:57:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:57:01,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 08:57:01,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 36 states and 45 transitions. [2018-11-18 08:57:01,484 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2018-11-18 08:57:01,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 08:57:01,485 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 08:57:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:57:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:57:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:57:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:57:02,003 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2018-11-18 08:57:02,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 18.11 08:57:02 ImpRootNode [2018-11-18 08:57:02,041 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-18 08:57:02,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:57:02,041 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:57:02,041 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:57:02,042 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:57:00" (3/4) ... [2018-11-18 08:57:02,044 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 08:57:02,110 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4c58f882-d5d8-4799-a477-9030d920c9fc/bin-2019/ukojak/witness.graphml [2018-11-18 08:57:02,111 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:57:02,111 INFO L168 Benchmark]: Toolchain (without parser) took 2068.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 956.5 MB in the beginning and 958.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 142.0 MB. Max. memory is 11.5 GB. [2018-11-18 08:57:02,112 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:57:02,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 956.5 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:57:02,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.02 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:57:02,114 INFO L168 Benchmark]: Boogie Preprocessor took 17.68 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:57:02,114 INFO L168 Benchmark]: RCFGBuilder took 369.60 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: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:57:02,114 INFO L168 Benchmark]: CodeCheck took 1228.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 960.9 MB in the end (delta: 127.1 MB). Peak memory consumption was 127.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:57:02,115 INFO L168 Benchmark]: Witness Printer took 69.84 ms. Allocated memory is still 1.2 GB. Free memory was 960.9 MB in the beginning and 958.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:57:02,118 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, 33 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 7 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 540 SDtfs, 244 SDslu, 272 SDs, 0 SdLazy, 508 SolverSat, 172 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 623 GetRequests, 587 SyntacticMatches, 18 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 3141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/60 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: 605]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L588] const int len = 5; [L589] CALL, EXPR dll_create(len) [L568] DLL head = ((void *)0); [L569] COND TRUE len > 0 [L570] EXPR, FCALL malloc(sizeof(struct node)) [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] FCALL new_head->data_0 = 0 [L575] FCALL new_head->data_1 = 0 [L576] COND FALSE, EXPR !(__VERIFIER_nondet_int() == len? 1 : 0) [L576] FCALL new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] FCALL new_head->next = head [L578] FCALL new_head->prev = ((void *)0) [L579] COND FALSE !(\read(head)) [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] EXPR, FCALL malloc(sizeof(struct node)) [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] FCALL new_head->data_0 = 0 [L575] FCALL new_head->data_1 = 0 [L576] COND TRUE, EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] FCALL new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] FCALL new_head->next = head [L578] FCALL new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] FCALL head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] EXPR, FCALL malloc(sizeof(struct node)) [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] FCALL new_head->data_0 = 0 [L575] FCALL new_head->data_1 = 0 [L576] COND FALSE, EXPR !(__VERIFIER_nondet_int() == len? 1 : 0) [L576] FCALL new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] FCALL new_head->next = head [L578] FCALL new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] FCALL head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] EXPR, FCALL malloc(sizeof(struct node)) [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] FCALL new_head->data_0 = 0 [L575] FCALL new_head->data_1 = 0 [L576] COND TRUE, EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] FCALL new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] FCALL new_head->next = head [L578] FCALL new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] FCALL head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] EXPR, FCALL malloc(sizeof(struct node)) [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] FCALL new_head->data_0 = 0 [L575] FCALL new_head->data_1 = 0 [L576] COND TRUE, EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] FCALL new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] FCALL new_head->next = head [L578] FCALL new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] FCALL head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND FALSE !(len > 0) [L585] RET return head; [L589] EXPR dll_create(len) [L589] DLL head = dll_create(len); [L590] FCALL head->next [L590] COND TRUE head->next [L591] EXPR, FCALL head->data_0 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 [L591] EXPR, FCALL head->data_1 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L591] EXPR, FCALL head->data_2 [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L591] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L605] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 349.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 956.5 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.02 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.68 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 369.60 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: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. * CodeCheck took 1228.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 960.9 MB in the end (delta: 127.1 MB). Peak memory consumption was 127.1 MB. Max. memory is 11.5 GB. * Witness Printer took 69.84 ms. Allocated memory is still 1.2 GB. Free memory was 960.9 MB in the beginning and 958.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...