java -Xmx8000000000 -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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/nec40_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 08:01:07,255 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 08:01:07,258 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 08:01:07,274 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 08:01:07,275 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 08:01:07,276 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 08:01:07,277 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 08:01:07,279 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 08:01:07,280 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 08:01:07,281 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 08:01:07,282 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 08:01:07,282 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 08:01:07,283 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 08:01:07,284 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 08:01:07,286 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 08:01:07,286 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 08:01:07,287 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 08:01:07,289 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 08:01:07,291 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 08:01:07,293 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 08:01:07,294 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 08:01:07,295 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 08:01:07,297 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 08:01:07,298 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 08:01:07,298 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 08:01:07,299 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 08:01:07,300 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 08:01:07,301 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 08:01:07,302 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 08:01:07,303 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 08:01:07,303 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 08:01:07,304 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 08:01:07,304 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 08:01:07,305 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 08:01:07,306 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 08:01:07,307 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 08:01:07,307 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-19 08:01:07,322 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 08:01:07,322 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 08:01:07,323 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 08:01:07,323 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 08:01:07,324 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 08:01:07,324 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 08:01:07,324 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-19 08:01:07,324 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 08:01:07,324 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-19 08:01:07,325 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 08:01:07,325 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 08:01:07,325 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 08:01:07,325 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 08:01:07,326 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 08:01:07,326 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 08:01:07,326 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 08:01:07,326 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 08:01:07,327 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 08:01:07,327 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 08:01:07,327 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 08:01:07,327 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 08:01:07,328 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 08:01:07,328 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 08:01:07,329 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 08:01:07,329 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 08:01:07,329 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 08:01:07,329 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 08:01:07,331 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 08:01:07,331 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 08:01:07,331 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 08:01:07,331 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 08:01:07,331 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 08:01:07,332 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 08:01:07,332 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 08:01:07,332 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 08:01:07,406 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 08:01:07,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 08:01:07,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 08:01:07,432 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 08:01:07,433 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 08:01:07,434 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec40_true-unreach-call_true-termination.i [2018-09-19 08:01:07,792 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9126393d1/97d2ef3876d144b5ba171c85ac967d84/FLAGb29163f15 [2018-09-19 08:01:07,974 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 08:01:07,977 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec40_true-unreach-call_true-termination.i [2018-09-19 08:01:07,984 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9126393d1/97d2ef3876d144b5ba171c85ac967d84/FLAGb29163f15 [2018-09-19 08:01:08,005 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9126393d1/97d2ef3876d144b5ba171c85ac967d84 [2018-09-19 08:01:08,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 08:01:08,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 08:01:08,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 08:01:08,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 08:01:08,034 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 08:01:08,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 08:01:08" (1/1) ... [2018-09-19 08:01:08,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cedc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:08, skipping insertion in model container [2018-09-19 08:01:08,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 08:01:08" (1/1) ... [2018-09-19 08:01:08,052 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 08:01:08,260 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 08:01:08,311 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 08:01:08,319 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 08:01:08,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:08 WrapperNode [2018-09-19 08:01:08,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 08:01:08,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 08:01:08,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 08:01:08,371 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 08:01:08,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:08" (1/1) ... [2018-09-19 08:01:08,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:08" (1/1) ... [2018-09-19 08:01:08,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 08:01:08,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 08:01:08,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 08:01:08,402 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 08:01:08,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:08" (1/1) ... [2018-09-19 08:01:08,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:08" (1/1) ... [2018-09-19 08:01:08,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:08" (1/1) ... [2018-09-19 08:01:08,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:08" (1/1) ... [2018-09-19 08:01:08,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:08" (1/1) ... [2018-09-19 08:01:08,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:08" (1/1) ... [2018-09-19 08:01:08,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:08" (1/1) ... [2018-09-19 08:01:08,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 08:01:08,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 08:01:08,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 08:01:08,469 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 08:01:08,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:08" (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 [2018-09-19 08:01:08,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 08:01:08,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 08:01:08,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 08:01:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 08:01:08,651 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 08:01:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 08:01:08,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 08:01:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 08:01:09,439 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 08:01:09,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 08:01:09 BoogieIcfgContainer [2018-09-19 08:01:09,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 08:01:09,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 08:01:09,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 08:01:09,446 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 08:01:09,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 08:01:08" (1/3) ... [2018-09-19 08:01:09,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba72147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 08:01:09, skipping insertion in model container [2018-09-19 08:01:09,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:08" (2/3) ... [2018-09-19 08:01:09,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba72147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 08:01:09, skipping insertion in model container [2018-09-19 08:01:09,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 08:01:09" (3/3) ... [2018-09-19 08:01:09,450 INFO L112 eAbstractionObserver]: Analyzing ICFG nec40_true-unreach-call_true-termination.i [2018-09-19 08:01:09,459 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 08:01:09,466 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 08:01:09,504 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 08:01:09,505 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 08:01:09,505 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 08:01:09,506 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 08:01:09,506 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 08:01:09,506 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 08:01:09,506 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 08:01:09,507 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 08:01:09,507 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 08:01:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-09-19 08:01:09,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-19 08:01:09,530 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:09,531 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:09,532 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:09,538 INFO L82 PathProgramCache]: Analyzing trace with hash -91485938, now seen corresponding path program 1 times [2018-09-19 08:01:09,540 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:09,541 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-19 08:01:09,548 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [17], [19], [22], [25], [35], [38], [40], [46], [47], [48], [50] [2018-09-19 08:01:09,613 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:09,613 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:09,675 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:09,676 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 11 variables. [2018-09-19 08:01:09,721 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:09,814 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 94.44% of their original sizes. [2018-09-19 08:01:09,814 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:09,864 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:09,866 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:09,866 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 08:01:09,866 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:09,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 08:01:09,880 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 08:01:09,882 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 08:01:09,886 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2018-09-19 08:01:10,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:10,091 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2018-09-19 08:01:10,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 08:01:10,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-09-19 08:01:10,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:10,106 INFO L225 Difference]: With dead ends: 47 [2018-09-19 08:01:10,106 INFO L226 Difference]: Without dead ends: 18 [2018-09-19 08:01:10,110 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 08:01:10,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-19 08:01:10,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-19 08:01:10,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-19 08:01:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-09-19 08:01:10,147 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2018-09-19 08:01:10,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:10,148 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-09-19 08:01:10,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 08:01:10,148 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-09-19 08:01:10,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-19 08:01:10,149 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:10,149 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:10,149 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:10,150 INFO L82 PathProgramCache]: Analyzing trace with hash 284971401, now seen corresponding path program 1 times [2018-09-19 08:01:10,150 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:10,150 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-09-19 08:01:10,150 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [22], [25], [35], [38], [40], [46], [47], [48], [50] [2018-09-19 08:01:10,155 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:10,155 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:11,222 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 08:01:11,222 INFO L272 AbstractInterpreter]: Visited 16 different actions 1571 times. Merged at 6 different actions 934 times. Widened at 1 different actions 152 times. Found 1 fixpoints after 1 different actions. Largest state had 12 variables. [2018-09-19 08:01:11,265 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 08:01:11,294 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 08:01:11,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 08:01:11 BoogieIcfgContainer [2018-09-19 08:01:11,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 08:01:11,296 INFO L168 Benchmark]: Toolchain (without parser) took 3276.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -467.1 MB). Peak memory consumption was 296.7 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:11,300 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 08:01:11,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:11,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 08:01:11,302 INFO L168 Benchmark]: Boogie Preprocessor took 66.78 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 08:01:11,302 INFO L168 Benchmark]: RCFGBuilder took 971.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:11,305 INFO L168 Benchmark]: TraceAbstraction took 1853.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 295.5 MB). Peak memory consumption was 295.5 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:11,310 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 31.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.78 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 971.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1853.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 295.5 MB). Peak memory consumption was 295.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; 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[L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L11] char x[100], y[100]; [L12] int i,j,k; [L12] int i,j,k; [L12] int i,j,k; [L15] k = __VERIFIER_nondet_int() [L17] i = 0 [L18] COND TRUE x[i] != 0 [L19] y[i] = x[i] [L20] i++ [L20] i++ [L18] COND FALSE !(x[i] != 0) [L22] y[i] = 0 [L24] COND TRUE k >= 0 && k < i [L25] COND TRUE y[k] != 0 [L26] CALL __VERIFIER_assert(0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. UNKNOWN Result, 1.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 11 SDslu, 13 SDs, 0 SdLazy, 11 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.2s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9629370629370629 AbsIntWeakeningRatio, 0.5384615384615384 AbsIntAvgWeakeningVarsNumRemoved, 14.692307692307692 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nec40_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_08-01-11-324.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nec40_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_08-01-11-324.csv Received shutdown request...