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/loop-acceleration/array_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 17:19:59,291 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 17:19:59,293 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 17:19:59,305 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 17:19:59,305 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 17:19:59,306 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 17:19:59,308 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 17:19:59,309 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 17:19:59,311 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 17:19:59,313 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 17:19:59,313 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 17:19:59,314 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 17:19:59,315 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 17:19:59,316 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 17:19:59,317 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 17:19:59,317 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 17:19:59,318 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 17:19:59,320 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 17:19:59,323 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 17:19:59,324 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 17:19:59,325 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 17:19:59,327 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 17:19:59,329 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 17:19:59,339 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 [2018-09-15 17:19:59,355 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 17:19:59,355 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 17:19:59,356 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 17:19:59,356 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 17:19:59,357 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 17:19:59,357 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 17:19:59,357 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 17:19:59,357 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 17:19:59,357 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-15 17:19:59,358 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 17:19:59,358 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 17:19:59,358 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 17:19:59,359 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 17:19:59,359 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 17:19:59,359 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 17:19:59,359 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 17:19:59,359 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 17:19:59,360 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 17:19:59,360 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 17:19:59,360 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 17:19:59,360 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 17:19:59,361 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 17:19:59,361 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 17:19:59,361 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 17:19:59,361 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 17:19:59,361 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 17:19:59,362 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 17:19:59,362 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 17:19:59,362 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 17:19:59,362 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 17:19:59,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 17:19:59,363 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 17:19:59,363 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 17:19:59,363 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 17:19:59,420 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 17:19:59,433 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 17:19:59,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 17:19:59,439 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 17:19:59,439 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 17:19:59,440 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i [2018-09-15 17:19:59,795 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdae77ce/0184d951d65540adaedbb3f5838034d9/FLAGd2aa03e8d [2018-09-15 17:19:59,951 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 17:19:59,952 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i [2018-09-15 17:19:59,959 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdae77ce/0184d951d65540adaedbb3f5838034d9/FLAGd2aa03e8d [2018-09-15 17:19:59,976 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdae77ce/0184d951d65540adaedbb3f5838034d9 [2018-09-15 17:19:59,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 17:19:59,991 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 17:19:59,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 17:19:59,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 17:20:00,000 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 17:20:00,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:19:59" (1/1) ... [2018-09-15 17:20:00,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f00c975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:00, skipping insertion in model container [2018-09-15 17:20:00,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:19:59" (1/1) ... [2018-09-15 17:20:00,017 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 17:20:00,230 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:00,250 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 17:20:00,254 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:00,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:00 WrapperNode [2018-09-15 17:20:00,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:00,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:00,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 17:20:00,271 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 17:20:00,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:00" (1/1) ... [2018-09-15 17:20:00,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:00" (1/1) ... [2018-09-15 17:20:00,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:00,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 17:20:00,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 17:20:00,296 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 17:20:00,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:00" (1/1) ... [2018-09-15 17:20:00,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:00" (1/1) ... [2018-09-15 17:20:00,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:00" (1/1) ... [2018-09-15 17:20:00,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:00" (1/1) ... [2018-09-15 17:20:00,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:00" (1/1) ... [2018-09-15 17:20:00,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:00" (1/1) ... [2018-09-15 17:20:00,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:00" (1/1) ... [2018-09-15 17:20:00,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 17:20:00,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 17:20:00,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 17:20:00,320 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 17:20:00,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:00" (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 [2018-09-15 17:20:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 17:20:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 17:20:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 17:20:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 17:20:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 17:20:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 17:20:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 17:20:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 17:20:00,624 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 17:20:00,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:00 BoogieIcfgContainer [2018-09-15 17:20:00,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 17:20:00,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 17:20:00,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 17:20:00,630 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 17:20:00,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 05:19:59" (1/3) ... [2018-09-15 17:20:00,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c5bc8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:00, skipping insertion in model container [2018-09-15 17:20:00,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:00" (2/3) ... [2018-09-15 17:20:00,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c5bc8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:00, skipping insertion in model container [2018-09-15 17:20:00,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:00" (3/3) ... [2018-09-15 17:20:00,634 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call1_true-termination.i [2018-09-15 17:20:00,644 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 17:20:00,652 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 17:20:00,700 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 17:20:00,700 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 17:20:00,701 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 17:20:00,701 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 17:20:00,701 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 17:20:00,701 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 17:20:00,701 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 17:20:00,702 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 17:20:00,702 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 17:20:00,719 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-15 17:20:00,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-15 17:20:00,726 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:00,727 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:00,728 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:00,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1870586046, now seen corresponding path program 1 times [2018-09-15 17:20:00,737 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:00,738 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-15 17:20:00,740 INFO L202 CegarAbsIntRunner]: [0], [4], [17], [21], [24], [26], [32], [33], [34], [36] [2018-09-15 17:20:00,788 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:00,788 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:00,832 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:00,833 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-15 17:20:00,853 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:00,899 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-15 17:20:00,899 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:00,904 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:00,906 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:00,906 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-15 17:20:00,909 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:00,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-15 17:20:00,929 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-15 17:20:00,930 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-15 17:20:00,935 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-09-15 17:20:00,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:00,989 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-09-15 17:20:00,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-15 17:20:00,991 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-15 17:20:00,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:01,002 INFO L225 Difference]: With dead ends: 30 [2018-09-15 17:20:01,002 INFO L226 Difference]: Without dead ends: 13 [2018-09-15 17:20:01,006 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-15 17:20:01,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-15 17:20:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-15 17:20:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-15 17:20:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-15 17:20:01,076 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-09-15 17:20:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:01,077 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-15 17:20:01,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-15 17:20:01,077 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-15 17:20:01,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-15 17:20:01,078 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:01,078 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:01,079 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:01,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1861068280, now seen corresponding path program 1 times [2018-09-15 17:20:01,079 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:01,080 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-15 17:20:01,080 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [21], [24], [26], [32], [33], [34], [36] [2018-09-15 17:20:01,089 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:01,089 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:01,094 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:01,095 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-15 17:20:01,130 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:01,141 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-15 17:20:01,141 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:01,173 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:01,174 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:01,174 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 17:20:01,174 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:01,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 17:20:01,175 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 17:20:01,176 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 17:20:01,176 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2018-09-15 17:20:01,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:01,213 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-15 17:20:01,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 17:20:01,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-15 17:20:01,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:01,215 INFO L225 Difference]: With dead ends: 21 [2018-09-15 17:20:01,215 INFO L226 Difference]: Without dead ends: 16 [2018-09-15 17:20:01,218 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 17:20:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-15 17:20:01,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-09-15 17:20:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-15 17:20:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-15 17:20:01,224 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-09-15 17:20:01,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:01,224 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-15 17:20:01,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 17:20:01,225 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-15 17:20:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-15 17:20:01,225 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:01,225 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:01,226 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:01,226 INFO L82 PathProgramCache]: Analyzing trace with hash 996352094, now seen corresponding path program 1 times [2018-09-15 17:20:01,226 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:01,227 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-15 17:20:01,227 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [13], [15], [21], [24], [26], [32], [33], [34], [36] [2018-09-15 17:20:01,229 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:01,229 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:01,284 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 17:20:01,285 INFO L272 AbstractInterpreter]: Visited 13 different actions 44 times. Merged at 3 different actions 23 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 3 variables. [2018-09-15 17:20:01,312 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 17:20:01,331 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 17:20:01,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 05:20:01 BoogieIcfgContainer [2018-09-15 17:20:01,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 17:20:01,332 INFO L168 Benchmark]: Toolchain (without parser) took 1344.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -750.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 17:20:01,336 INFO L168 Benchmark]: CDTParser took 0.64 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. [2018-09-15 17:20:01,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.53 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. [2018-09-15 17:20:01,338 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.69 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. [2018-09-15 17:20:01,338 INFO L168 Benchmark]: Boogie Preprocessor took 23.99 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. [2018-09-15 17:20:01,339 INFO L168 Benchmark]: RCFGBuilder took 305.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.7 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:01,340 INFO L168 Benchmark]: TraceAbstraction took 705.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:01,345 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 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 277.53 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 23.69 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 23.99 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 305.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.7 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 705.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: 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: [L9] int A[2048]; [L10] int i; [L11] i = 0 [L11] COND TRUE i < 1024 [L12] A[i] = i [L11] i++ [L11] i++ [L11] COND FALSE !(i < 1024) [L14] CALL __VERIFIER_assert(A[1023] == 1023) [L3] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNKNOWN Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 1 SDslu, 9 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.7894736842105263 AbsIntWeakeningRatio, 0.42105263157894735 AbsIntAvgWeakeningVarsNumRemoved, 0.05263157894736842 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 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/array_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_17-20-01-360.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_17-20-01-360.csv Received shutdown request...