./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/forester-heap/dll-simple-white-blue_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/forester-heap/dll-simple-white-blue_false-unreach-call_false-valid-memcleanup.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f369e67185304fce6130a1dfc66e8cb89abf0605 ........................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:08:46,488 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:08:46,490 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:08:46,504 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:08:46,504 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:08:46,505 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:08:46,508 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:08:46,510 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:08:46,512 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:08:46,518 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:08:46,519 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:08:46,520 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:08:46,526 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:08:46,527 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:08:46,528 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:08:46,532 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:08:46,533 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:08:46,535 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:08:46,537 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:08:46,539 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:08:46,540 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:08:46,542 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:08:46,544 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:08:46,544 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:08:46,545 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:08:46,546 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:08:46,547 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:08:46,548 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:08:46,549 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:08:46,550 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:08:46,550 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:08:46,551 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:08:46,551 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:08:46,551 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:08:46,553 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:08:46,554 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:08:46,554 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:08:46,581 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:08:46,582 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:08:46,583 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:08:46,584 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:08:46,585 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:08:46,586 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:08:46,586 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:08:46,586 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:08:46,586 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:08:46,587 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:08:46,587 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:08:46,588 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:08:46,588 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:08:46,588 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:08:46,588 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:08:46,589 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:08:46,589 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:08:46,589 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:08:46,589 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:08:46,590 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:08:46,590 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:08:46,590 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:08:46,590 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:08:46,590 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:08:46,591 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:08:46,591 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:08:46,591 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:08:46,591 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:08:46,591 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:08:46,591 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:08:46,592 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> f369e67185304fce6130a1dfc66e8cb89abf0605 [2018-11-28 18:08:46,632 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:08:46,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:08:46,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:08:46,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:08:46,654 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:08:46,654 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/forester-heap/dll-simple-white-blue_false-unreach-call_false-valid-memcleanup.i [2018-11-28 18:08:46,715 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1dbbfad5/9e7065314bf24ed4918305010777f790/FLAG63b0bfa7b [2018-11-28 18:08:47,338 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:08:47,338 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/forester-heap/dll-simple-white-blue_false-unreach-call_false-valid-memcleanup.i [2018-11-28 18:08:47,357 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1dbbfad5/9e7065314bf24ed4918305010777f790/FLAG63b0bfa7b [2018-11-28 18:08:47,533 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1dbbfad5/9e7065314bf24ed4918305010777f790 [2018-11-28 18:08:47,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:08:47,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:08:47,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:08:47,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:08:47,544 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:08:47,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:08:47" (1/1) ... [2018-11-28 18:08:47,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f1d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:47, skipping insertion in model container [2018-11-28 18:08:47,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:08:47" (1/1) ... [2018-11-28 18:08:47,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:08:47,622 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:08:48,003 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:08:48,014 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:08:48,137 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:08:48,198 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:08:48,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:48 WrapperNode [2018-11-28 18:08:48,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:08:48,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:08:48,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:08:48,200 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:08:48,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:48" (1/1) ... [2018-11-28 18:08:48,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:48" (1/1) ... [2018-11-28 18:08:48,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:08:48,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:08:48,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:08:48,247 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:08:48,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:48" (1/1) ... [2018-11-28 18:08:48,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:48" (1/1) ... [2018-11-28 18:08:48,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:48" (1/1) ... [2018-11-28 18:08:48,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:48" (1/1) ... [2018-11-28 18:08:48,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:48" (1/1) ... [2018-11-28 18:08:48,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:48" (1/1) ... [2018-11-28 18:08:48,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:48" (1/1) ... [2018-11-28 18:08:48,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:08:48,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:08:48,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:08:48,297 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:08:48,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 18:08:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:08:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:08:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:08:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:08:48,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:08:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:08:48,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:08:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 18:08:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 18:08:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:08:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:08:48,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:08:48,968 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:08:48,969 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-11-28 18:08:48,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:48 BoogieIcfgContainer [2018-11-28 18:08:48,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:08:48,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:08:48,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:08:48,975 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:08:48,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:08:47" (1/3) ... [2018-11-28 18:08:48,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c75481b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:08:48, skipping insertion in model container [2018-11-28 18:08:48,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:48" (2/3) ... [2018-11-28 18:08:48,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c75481b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:08:48, skipping insertion in model container [2018-11-28 18:08:48,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:48" (3/3) ... [2018-11-28 18:08:48,980 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue_false-unreach-call_false-valid-memcleanup.i [2018-11-28 18:08:48,989 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:08:48,997 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:08:49,014 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:08:49,048 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:08:49,049 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:08:49,049 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:08:49,050 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:08:49,050 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:08:49,050 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:08:49,050 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:08:49,050 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:08:49,051 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:08:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-11-28 18:08:49,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 18:08:49,077 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:49,078 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:49,081 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:49,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:49,088 INFO L82 PathProgramCache]: Analyzing trace with hash -445630561, now seen corresponding path program 1 times [2018-11-28 18:08:49,090 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:49,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:49,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:49,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:49,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:08:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:08:49,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:08:49,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:08:49,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:08:49,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:08:49,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:08:49,295 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-11-28 18:08:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:08:49,315 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2018-11-28 18:08:49,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:08:49,317 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-11-28 18:08:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:08:49,327 INFO L225 Difference]: With dead ends: 55 [2018-11-28 18:08:49,328 INFO L226 Difference]: Without dead ends: 24 [2018-11-28 18:08:49,331 INFO L631 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 [2018-11-28 18:08:49,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-28 18:08:49,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-28 18:08:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 18:08:49,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2018-11-28 18:08:49,374 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 15 [2018-11-28 18:08:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:08:49,375 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-11-28 18:08:49,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:08:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2018-11-28 18:08:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 18:08:49,376 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:49,377 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:49,379 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:49,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:49,379 INFO L82 PathProgramCache]: Analyzing trace with hash -640042354, now seen corresponding path program 1 times [2018-11-28 18:08:49,379 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:49,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:49,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:49,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:49,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:08:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:08:49,565 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:08:49,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:08:49 BoogieIcfgContainer [2018-11-28 18:08:49,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:08:49,614 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:08:49,614 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:08:49,614 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:08:49,615 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:48" (3/4) ... [2018-11-28 18:08:49,619 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:08:49,706 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:08:49,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:08:49,708 INFO L168 Benchmark]: Toolchain (without parser) took 2170.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -102.8 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:49,710 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:08:49,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -162.4 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:49,712 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:08:49,712 INFO L168 Benchmark]: Boogie Preprocessor took 49.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:08:49,715 INFO L168 Benchmark]: RCFGBuilder took 672.71 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: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:49,717 INFO L168 Benchmark]: TraceAbstraction took 642.64 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:49,718 INFO L168 Benchmark]: Witness Printer took 92.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:49,726 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 659.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -162.4 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 672.71 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: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 642.64 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Witness Printer took 92.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1052]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L989] SLL* head = malloc(sizeof(SLL)); [L990] head->next = ((void*)0) [L991] head->prev = ((void*)0) [L992] head->data = 0 [L994] SLL* x = head; VAL [head={21:0}, malloc(sizeof(SLL))={21:0}, x={21:0}] [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] x = malloc(sizeof(SLL)) [L1010] x->data = 1 [L1011] x->next = head [L1012] x->prev = ((void*)0) [L1013] head = x VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={21:0}, x={18:0}] [L1039] x = head VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={21:0}, x={18:0}] [L1042] EXPR x->data VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={21:0}, x={18:0}, x->data=1] [L1042] COND FALSE !(x->data != 1) [L1048] EXPR x->next [L1048] x = x->next [L1049] COND TRUE \read(*x) [L1051] EXPR x->data VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={21:0}, x={21:0}, x->data=0] [L1051] COND TRUE x->data != 1 [L1052] __VERIFIER_error() VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={21:0}, x={21:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...