./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-properties/splice_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_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-properties/splice_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cbb2592ab69766c5d5aa80ea8eebc591334cc0be .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 11:32:57,469 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:32:57,471 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:32:57,477 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:32:57,477 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:32:57,477 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:32:57,478 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:32:57,479 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:32:57,480 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:32:57,481 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:32:57,481 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:32:57,482 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:32:57,482 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:32:57,483 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:32:57,484 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:32:57,484 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:32:57,485 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:32:57,486 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:32:57,487 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:32:57,488 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:32:57,489 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:32:57,490 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:32:57,491 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:32:57,492 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:32:57,492 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:32:57,492 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:32:57,493 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:32:57,494 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:32:57,494 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:32:57,495 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:32:57,495 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:32:57,496 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:32:57,496 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:32:57,496 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:32:57,497 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:32:57,497 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:32:57,497 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 11:32:57,507 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:32:57,508 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:32:57,508 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:32:57,508 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 11:32:57,508 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 11:32:57,508 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 11:32:57,509 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 11:32:57,509 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 11:32:57,509 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 11:32:57,509 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 11:32:57,509 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 11:32:57,509 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 11:32:57,509 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 11:32:57,509 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:32:57,510 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:32:57,510 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:32:57,510 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:32:57,510 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:32:57,510 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:32:57,510 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:32:57,510 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:32:57,511 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:32:57,511 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:32:57,511 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:32:57,511 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:32:57,511 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:32:57,511 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:32:57,511 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:32:57,511 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:32:57,511 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:32:57,511 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:32:57,512 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:32:57,512 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:32:57,512 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 11:32:57,512 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:32:57,512 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:32:57,512 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 11:32:57,512 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan 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 -> Taipan 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 -> cbb2592ab69766c5d5aa80ea8eebc591334cc0be [2018-11-18 11:32:57,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:32:57,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:32:57,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:32:57,549 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:32:57,550 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:32:57,550 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan/../../sv-benchmarks/c/list-properties/splice_false-unreach-call_false-valid-memcleanup.i [2018-11-18 11:32:57,594 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan/data/e9f9d7f42/d7a91ff8b0664763a1e1eaeb2f6ef8af/FLAG7ffc2e59e [2018-11-18 11:32:58,039 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:32:58,039 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a8f3d50d-bd33-42e0-953a-18e138efe6da/sv-benchmarks/c/list-properties/splice_false-unreach-call_false-valid-memcleanup.i [2018-11-18 11:32:58,048 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan/data/e9f9d7f42/d7a91ff8b0664763a1e1eaeb2f6ef8af/FLAG7ffc2e59e [2018-11-18 11:32:58,057 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan/data/e9f9d7f42/d7a91ff8b0664763a1e1eaeb2f6ef8af [2018-11-18 11:32:58,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:32:58,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:32:58,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:32:58,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:32:58,063 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:32:58,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:32:58" (1/1) ... [2018-11-18 11:32:58,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65414298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:32:58, skipping insertion in model container [2018-11-18 11:32:58,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:32:58" (1/1) ... [2018-11-18 11:32:58,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:32:58,101 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:32:58,293 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:32:58,299 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:32:58,324 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:32:58,399 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:32:58,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:32:58 WrapperNode [2018-11-18 11:32:58,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:32:58,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:32:58,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:32:58,400 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:32:58,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:32:58" (1/1) ... [2018-11-18 11:32:58,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:32:58" (1/1) ... [2018-11-18 11:32:58,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:32:58,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:32:58,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:32:58,422 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:32:58,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:32:58" (1/1) ... [2018-11-18 11:32:58,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:32:58" (1/1) ... [2018-11-18 11:32:58,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:32:58" (1/1) ... [2018-11-18 11:32:58,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:32:58" (1/1) ... [2018-11-18 11:32:58,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:32:58" (1/1) ... [2018-11-18 11:32:58,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:32:58" (1/1) ... [2018-11-18 11:32:58,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:32:58" (1/1) ... [2018-11-18 11:32:58,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:32:58,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:32:58,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:32:58,446 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:32:58,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:32:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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:2000 [2018-11-18 11:32:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:32:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 11:32:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 11:32:58,480 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 11:32:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 11:32:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:32:58,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:32:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:32:58,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:32:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 11:32:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 11:32:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:32:58,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:32:58,667 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:32:58,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:32:58 BoogieIcfgContainer [2018-11-18 11:32:58,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:32:58,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:32:58,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:32:58,670 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:32:58,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:32:58" (1/3) ... [2018-11-18 11:32:58,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72eaa908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:32:58, skipping insertion in model container [2018-11-18 11:32:58,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:32:58" (2/3) ... [2018-11-18 11:32:58,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72eaa908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:32:58, skipping insertion in model container [2018-11-18 11:32:58,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:32:58" (3/3) ... [2018-11-18 11:32:58,672 INFO L112 eAbstractionObserver]: Analyzing ICFG splice_false-unreach-call_false-valid-memcleanup.i [2018-11-18 11:32:58,678 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:32:58,683 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:32:58,693 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:32:58,713 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:32:58,713 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:32:58,713 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:32:58,714 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:32:58,714 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:32:58,714 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:32:58,714 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:32:58,714 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:32:58,724 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-18 11:32:58,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 11:32:58,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:32:58,728 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:32:58,730 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:32:58,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:32:58,733 INFO L82 PathProgramCache]: Analyzing trace with hash -518534277, now seen corresponding path program 1 times [2018-11-18 11:32:58,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:32:58,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:32:58,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:32:58,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:32:58,770 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:32:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:32:58,824 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 11:32:58,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:32:58,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:32:58,826 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:32:58,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 11:32:58,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 11:32:58,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:32:58,839 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-11-18 11:32:58,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:32:58,852 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2018-11-18 11:32:58,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 11:32:58,853 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-11-18 11:32:58,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:32:58,858 INFO L225 Difference]: With dead ends: 61 [2018-11-18 11:32:58,858 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 11:32:58,860 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:32:58,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 11:32:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-18 11:32:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 11:32:58,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2018-11-18 11:32:58,882 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 17 [2018-11-18 11:32:58,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:32:58,883 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2018-11-18 11:32:58,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 11:32:58,883 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2018-11-18 11:32:58,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 11:32:58,884 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:32:58,884 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:32:58,884 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:32:58,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:32:58,884 INFO L82 PathProgramCache]: Analyzing trace with hash 417617458, now seen corresponding path program 1 times [2018-11-18 11:32:58,885 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:32:58,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:32:58,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:32:58,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:32:58,887 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:32:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:32:58,971 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 11:32:58,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:32:58,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:32:58,972 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:32:58,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:32:58,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:32:58,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:32:58,973 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 4 states. [2018-11-18 11:32:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:32:59,060 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2018-11-18 11:32:59,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:32:59,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-18 11:32:59,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:32:59,061 INFO L225 Difference]: With dead ends: 53 [2018-11-18 11:32:59,061 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 11:32:59,063 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:32:59,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 11:32:59,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-11-18 11:32:59,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 11:32:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-18 11:32:59,068 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-18 11:32:59,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:32:59,068 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-18 11:32:59,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:32:59,068 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-18 11:32:59,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 11:32:59,069 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:32:59,069 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:32:59,069 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:32:59,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:32:59,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1330658670, now seen corresponding path program 1 times [2018-11-18 11:32:59,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:32:59,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:32:59,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:32:59,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:32:59,072 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:32:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:32:59,123 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 11:32:59,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:32:59,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:32:59,124 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:32:59,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:32:59,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:32:59,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:32:59,124 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-18 11:32:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:32:59,155 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2018-11-18 11:32:59,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:32:59,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-18 11:32:59,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:32:59,157 INFO L225 Difference]: With dead ends: 63 [2018-11-18 11:32:59,157 INFO L226 Difference]: Without dead ends: 52 [2018-11-18 11:32:59,157 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:32:59,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-18 11:32:59,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2018-11-18 11:32:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 11:32:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2018-11-18 11:32:59,162 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 24 [2018-11-18 11:32:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:32:59,162 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2018-11-18 11:32:59,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:32:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2018-11-18 11:32:59,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 11:32:59,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:32:59,163 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:32:59,163 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:32:59,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:32:59,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1013031593, now seen corresponding path program 1 times [2018-11-18 11:32:59,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:32:59,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:32:59,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:32:59,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:32:59,164 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:32:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:32:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:32:59,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:32:59,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 11:32:59,215 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:32:59,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 11:32:59,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 11:32:59,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:32:59,216 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 6 states. [2018-11-18 11:32:59,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:32:59,322 INFO L93 Difference]: Finished difference Result 92 states and 116 transitions. [2018-11-18 11:32:59,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:32:59,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-18 11:32:59,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:32:59,323 INFO L225 Difference]: With dead ends: 92 [2018-11-18 11:32:59,323 INFO L226 Difference]: Without dead ends: 57 [2018-11-18 11:32:59,324 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:32:59,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-18 11:32:59,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2018-11-18 11:32:59,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-18 11:32:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2018-11-18 11:32:59,328 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 25 [2018-11-18 11:32:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:32:59,329 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2018-11-18 11:32:59,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 11:32:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2018-11-18 11:32:59,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 11:32:59,329 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:32:59,330 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:32:59,330 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:32:59,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:32:59,330 INFO L82 PathProgramCache]: Analyzing trace with hash 2048581833, now seen corresponding path program 1 times [2018-11-18 11:32:59,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:32:59,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:32:59,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:32:59,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:32:59,331 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:32:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:32:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 11:32:59,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:32:59,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:32:59,353 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:32:59,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:32:59,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:32:59,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:32:59,354 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand 3 states. [2018-11-18 11:32:59,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:32:59,370 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2018-11-18 11:32:59,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:32:59,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-11-18 11:32:59,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:32:59,371 INFO L225 Difference]: With dead ends: 111 [2018-11-18 11:32:59,371 INFO L226 Difference]: Without dead ends: 69 [2018-11-18 11:32:59,372 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:32:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-18 11:32:59,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2018-11-18 11:32:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-18 11:32:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2018-11-18 11:32:59,376 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 32 [2018-11-18 11:32:59,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:32:59,376 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2018-11-18 11:32:59,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:32:59,376 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2018-11-18 11:32:59,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 11:32:59,377 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:32:59,377 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:32:59,377 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:32:59,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:32:59,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1625880007, now seen corresponding path program 1 times [2018-11-18 11:32:59,377 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:32:59,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:32:59,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:32:59,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:32:59,378 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:32:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:32:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:32:59,421 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 11:32:59,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:32:59 BoogieIcfgContainer [2018-11-18 11:32:59,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:32:59,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:32:59,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:32:59,452 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:32:59,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:32:58" (3/4) ... [2018-11-18 11:32:59,454 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 11:32:59,494 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a8f3d50d-bd33-42e0-953a-18e138efe6da/bin-2019/utaipan/witness.graphml [2018-11-18 11:32:59,494 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:32:59,495 INFO L168 Benchmark]: Toolchain (without parser) took 1435.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 957.6 MB in the beginning and 997.9 MB in the end (delta: -40.3 MB). Peak memory consumption was 91.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:32:59,496 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-11-18 11:32:59,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 957.6 MB in the beginning and 1.1 GB in the end (delta: -167.5 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:32:59,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:32:59,497 INFO L168 Benchmark]: Boogie Preprocessor took 23.97 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 11:32:59,497 INFO L168 Benchmark]: RCFGBuilder took 221.99 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:32:59,499 INFO L168 Benchmark]: TraceAbstraction took 783.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 91.4 MB). Peak memory consumption was 91.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:32:59,500 INFO L168 Benchmark]: Witness Printer took 42.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 997.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:32:59,502 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 339.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 957.6 MB in the beginning and 1.1 GB in the end (delta: -167.5 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.97 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 221.99 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 783.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 91.4 MB). Peak memory consumption was 91.4 MB. Max. memory is 11.5 GB. * Witness Printer took 42.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 997.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 679]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] int flag = 1; [L628] EXPR, FCALL malloc(sizeof(struct node)) [L628] List a = (List) malloc(sizeof(struct node)); VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}] [L629] COND FALSE !(a == 0) VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}] [L630] List t; [L631] List l1; [L632] List l2; [L633] List b; [L634] List u; [L635] List p = a; VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, p={10:0}] [L636] COND TRUE __VERIFIER_nondet_int() [L637] COND TRUE \read(flag) [L638] FCALL p->h = 1 [L639] flag = 0 VAL [a={10:0}, flag=0, malloc(sizeof(struct node))={10:0}, p={10:0}] [L644] EXPR, FCALL malloc(sizeof(struct node)) [L644] t = (List) malloc(sizeof(struct node)) VAL [a={10:0}, flag=0, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] [L645] COND FALSE !(t == 0) VAL [a={10:0}, flag=0, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] [L646] FCALL p->n = t [L647] EXPR, FCALL p->n [L647] p = p->n [L636] COND FALSE !(__VERIFIER_nondet_int()) [L649] FCALL p->h = 3 [L650] EXPR, FCALL a->h VAL [a={10:0}, a->h=1, flag=0, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={12:0}, t={12:0}] [L650] COND FALSE !(a->h == 3) [L651] flag = 1 [L652] l1 = 0 [L653] l2 = 0 [L654] p = a VAL [a={10:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] [L655] EXPR, FCALL p->h VAL [a={10:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=1, t={12:0}] [L655] COND TRUE p->h != 3 [L656] t = p [L657] EXPR, FCALL p->n [L657] p = p->n [L658] COND TRUE \read(flag) [L659] FCALL t->n = l1 [L660] l1 = t [L661] flag = 0 VAL [a={10:0}, flag=0, l1={10:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={12:0}, t={10:0}] [L655] EXPR, FCALL p->h VAL [a={10:0}, flag=0, l1={10:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={12:0}, p->h=3, t={10:0}] [L655] COND FALSE !(p->h != 3) [L668] p = l1 VAL [a={10:0}, flag=0, l1={10:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={10:0}] [L669] COND TRUE p != 0 [L670] EXPR, FCALL p->h VAL [a={10:0}, flag=0, l1={10:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=1, t={10:0}] [L670] COND TRUE p->h != 2 [L679] __VERIFIER_error() VAL [a={10:0}, flag=0, l1={10:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 195 SDtfs, 53 SDslu, 233 SDs, 0 SdLazy, 101 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=5, traceCheckStatistics: No data available, 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 6112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 9/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...