./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa 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/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.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 19c675897a6506757b73d61913c0ceb3a779b5c8 ................................................................................................................................................................................................................................................................................................................................ 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 0.1.24-2e94e6a [2018-12-31 05:38:48,496 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 05:38:48,498 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 05:38:48,510 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 05:38:48,510 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 05:38:48,511 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 05:38:48,513 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 05:38:48,522 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 05:38:48,524 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 05:38:48,525 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 05:38:48,526 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 05:38:48,526 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 05:38:48,527 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 05:38:48,528 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 05:38:48,529 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 05:38:48,530 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 05:38:48,530 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 05:38:48,537 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 05:38:48,542 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 05:38:48,544 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 05:38:48,547 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 05:38:48,549 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 05:38:48,554 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 05:38:48,554 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 05:38:48,555 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 05:38:48,559 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 05:38:48,560 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 05:38:48,561 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 05:38:48,561 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 05:38:48,565 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 05:38:48,565 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 05:38:48,566 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 05:38:48,566 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 05:38:48,566 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 05:38:48,568 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 05:38:48,569 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 05:38:48,569 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 05:38:48,597 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 05:38:48,597 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 05:38:48,598 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 05:38:48,599 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 05:38:48,599 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 05:38:48,600 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 05:38:48,600 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 05:38:48,600 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 05:38:48,600 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 05:38:48,600 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 05:38:48,600 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 05:38:48,601 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 05:38:48,601 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 05:38:48,601 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 05:38:48,601 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 05:38:48,601 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 05:38:48,601 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 05:38:48,604 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 05:38:48,604 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 05:38:48,604 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 05:38:48,604 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 05:38:48,605 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 05:38:48,605 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 05:38:48,605 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 05:38:48,605 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 05:38:48,605 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 05:38:48,605 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 05:38:48,606 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 05:38:48,606 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 -> 19c675897a6506757b73d61913c0ceb3a779b5c8 [2018-12-31 05:38:48,648 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 05:38:48,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 05:38:48,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 05:38:48,668 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 05:38:48,668 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 05:38:48,669 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i [2018-12-31 05:38:48,738 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4903e1cd8/7f14d005f4e442efbbfb19bcc1424f6a/FLAGca395e3a0 [2018-12-31 05:38:49,250 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 05:38:49,251 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i [2018-12-31 05:38:49,258 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4903e1cd8/7f14d005f4e442efbbfb19bcc1424f6a/FLAGca395e3a0 [2018-12-31 05:38:49,593 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4903e1cd8/7f14d005f4e442efbbfb19bcc1424f6a [2018-12-31 05:38:49,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 05:38:49,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 05:38:49,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 05:38:49,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 05:38:49,609 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 05:38:49,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:38:49" (1/1) ... [2018-12-31 05:38:49,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79fa1603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:49, skipping insertion in model container [2018-12-31 05:38:49,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:38:49" (1/1) ... [2018-12-31 05:38:49,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 05:38:49,649 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 05:38:49,846 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 05:38:49,859 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 05:38:49,880 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 05:38:49,898 INFO L195 MainTranslator]: Completed translation [2018-12-31 05:38:49,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:49 WrapperNode [2018-12-31 05:38:49,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 05:38:49,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 05:38:49,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 05:38:49,900 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 05:38:49,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:49" (1/1) ... [2018-12-31 05:38:49,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:49" (1/1) ... [2018-12-31 05:38:49,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 05:38:49,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 05:38:49,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 05:38:49,944 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 05:38:49,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:49" (1/1) ... [2018-12-31 05:38:49,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:49" (1/1) ... [2018-12-31 05:38:49,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:49" (1/1) ... [2018-12-31 05:38:49,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:49" (1/1) ... [2018-12-31 05:38:49,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:49" (1/1) ... [2018-12-31 05:38:49,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:49" (1/1) ... [2018-12-31 05:38:49,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:49" (1/1) ... [2018-12-31 05:38:49,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 05:38:49,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 05:38:49,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 05:38:49,969 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 05:38:49,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:49" (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 [2018-12-31 05:38:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 05:38:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 05:38:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 05:38:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 05:38:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 05:38:50,422 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 05:38:50,422 INFO L280 CfgBuilder]: Removed 9 assue(true) statements. [2018-12-31 05:38:50,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:38:50 BoogieIcfgContainer [2018-12-31 05:38:50,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 05:38:50,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 05:38:50,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 05:38:50,428 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 05:38:50,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 05:38:49" (1/3) ... [2018-12-31 05:38:50,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b63c3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:38:50, skipping insertion in model container [2018-12-31 05:38:50,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:49" (2/3) ... [2018-12-31 05:38:50,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b63c3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:38:50, skipping insertion in model container [2018-12-31 05:38:50,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:38:50" (3/3) ... [2018-12-31 05:38:50,433 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i [2018-12-31 05:38:50,442 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 05:38:50,449 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 05:38:50,468 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 05:38:50,501 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 05:38:50,501 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 05:38:50,501 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 05:38:50,502 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 05:38:50,502 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 05:38:50,502 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 05:38:50,502 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 05:38:50,502 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 05:38:50,503 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 05:38:50,517 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-12-31 05:38:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-31 05:38:50,524 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:38:50,525 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-12-31 05:38:50,528 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:38:50,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:38:50,534 INFO L82 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2018-12-31 05:38:50,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:38:50,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:38:50,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:50,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:38:50,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:38:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:50,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 05:38:50,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 05:38:50,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 05:38:50,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 05:38:50,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 05:38:50,800 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2018-12-31 05:38:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:38:50,927 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2018-12-31 05:38:50,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 05:38:50,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-12-31 05:38:50,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:38:50,937 INFO L225 Difference]: With dead ends: 39 [2018-12-31 05:38:50,938 INFO L226 Difference]: Without dead ends: 13 [2018-12-31 05:38:50,941 INFO L631 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 [2018-12-31 05:38:50,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-31 05:38:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2018-12-31 05:38:50,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-31 05:38:50,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-12-31 05:38:50,976 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2018-12-31 05:38:50,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:38:50,976 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-12-31 05:38:50,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 05:38:50,977 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-12-31 05:38:50,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-31 05:38:50,977 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:38:50,977 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:38:50,978 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:38:50,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:38:50,978 INFO L82 PathProgramCache]: Analyzing trace with hash -185344033, now seen corresponding path program 1 times [2018-12-31 05:38:50,978 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:38:50,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:38:50,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:50,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:38:50,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:38:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:51,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 05:38:51,257 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 05:38:51,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:38:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:38:51,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:38:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:51,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 05:38:51,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-12-31 05:38:51,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-31 05:38:51,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-31 05:38:51,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-31 05:38:51,514 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-12-31 05:38:51,765 WARN L181 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-12-31 05:38:51,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:38:51,942 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-12-31 05:38:51,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-31 05:38:51,943 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2018-12-31 05:38:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:38:51,944 INFO L225 Difference]: With dead ends: 19 [2018-12-31 05:38:51,944 INFO L226 Difference]: Without dead ends: 17 [2018-12-31 05:38:51,945 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-12-31 05:38:51,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-31 05:38:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2018-12-31 05:38:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-31 05:38:51,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-31 05:38:51,952 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2018-12-31 05:38:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:38:51,952 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-31 05:38:51,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-31 05:38:51,953 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-31 05:38:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-31 05:38:51,953 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:38:51,954 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2018-12-31 05:38:51,954 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:38:51,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:38:51,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1625670603, now seen corresponding path program 2 times [2018-12-31 05:38:51,955 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:38:51,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:38:51,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:51,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:38:51,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 05:38:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 05:38:52,050 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 05:38:52,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 05:38:52 BoogieIcfgContainer [2018-12-31 05:38:52,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 05:38:52,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 05:38:52,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 05:38:52,089 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 05:38:52,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:38:50" (3/4) ... [2018-12-31 05:38:52,093 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 05:38:52,150 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 05:38:52,150 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 05:38:52,151 INFO L168 Benchmark]: Toolchain (without parser) took 2550.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 946.0 MB in the beginning and 1.0 GB in the end (delta: -101.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2018-12-31 05:38:52,152 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 05:38:52,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.12 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 05:38:52,154 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.51 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 05:38:52,154 INFO L168 Benchmark]: Boogie Preprocessor took 25.01 ms. Allocated memory is still 1.0 GB. Free memory was 935.3 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-31 05:38:52,155 INFO L168 Benchmark]: RCFGBuilder took 454.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-12-31 05:38:52,156 INFO L168 Benchmark]: TraceAbstraction took 1663.91 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: 58.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 11.5 GB. [2018-12-31 05:38:52,157 INFO L168 Benchmark]: Witness Printer took 61.46 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-12-31 05:38:52,162 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 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 296.12 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.51 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.01 ms. Allocated memory is still 1.0 GB. Free memory was 935.3 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 454.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1663.91 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: 58.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 11.5 GB. * Witness Printer took 61.46 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] Char *tmp; VAL [tmp={0:0}] [L29] Char pathbuf[1 +1]; [L31] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L33] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 [L16] Char *p; [L18] p = pathbuf VAL [tmp={1:4}] [L18] COND TRUE p <= pathlim [L4] COND FALSE !(!(cond)) VAL [tmp={1:4}] [L21] *p = 1 VAL [tmp={1:4}] [L18] p++ VAL [tmp={1:4}] [L18] COND TRUE p <= pathlim [L4] COND FALSE !(!(cond)) VAL [tmp={1:4}] [L21] *p = 1 VAL [tmp={1:4}] [L18] p++ VAL [tmp={1:4}] [L18] COND TRUE p <= pathlim [L4] COND TRUE !(cond) VAL [tmp={1:4}] [L5] __VERIFIER_error() VAL [tmp={1:4}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. UNSAFE Result, 1.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 26 SDslu, 29 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, 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, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 912 SizeOfPredicates, 14 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...