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_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call2_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 01:29:07,894 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 01:29:07,896 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 01:29:07,913 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 01:29:07,913 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 01:29:07,914 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 01:29:07,915 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 01:29:07,917 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 01:29:07,919 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 01:29:07,919 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 01:29:07,920 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 01:29:07,921 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 01:29:07,921 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 01:29:07,922 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 01:29:07,924 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 01:29:07,924 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 01:29:07,925 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 01:29:07,927 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 01:29:07,929 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 01:29:07,931 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 01:29:07,932 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 01:29:07,933 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 01:29:07,935 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 01:29:07,953 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-09-19 01:29:07,971 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 01:29:07,972 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 01:29:07,973 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 01:29:07,973 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 01:29:07,973 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 01:29:07,973 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 01:29:07,973 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 01:29:07,974 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 01:29:07,974 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 01:29:07,974 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 01:29:07,974 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 01:29:07,974 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 01:29:07,975 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 01:29:07,975 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 01:29:07,976 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 01:29:07,976 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 01:29:07,976 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 01:29:07,976 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 01:29:07,976 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 01:29:07,977 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 01:29:07,977 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 01:29:07,977 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 01:29:07,977 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 01:29:07,977 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 01:29:07,978 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 01:29:07,978 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 01:29:07,978 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 01:29:07,978 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 01:29:07,979 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 01:29:07,979 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 01:29:07,979 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 01:29:07,979 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 01:29:07,979 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 01:29:07,979 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 01:29:08,040 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 01:29:08,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 01:29:08,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 01:29:08,067 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 01:29:08,068 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 01:29:08,069 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call2_true-termination.i [2018-09-19 01:29:08,413 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2532d1dce/8d8efa61cb514bc1aa899fd793f7f7bf/FLAG5bd8dc501 [2018-09-19 01:29:08,538 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 01:29:08,539 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_true-unreach-call2_true-termination.i [2018-09-19 01:29:08,545 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2532d1dce/8d8efa61cb514bc1aa899fd793f7f7bf/FLAG5bd8dc501 [2018-09-19 01:29:08,561 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2532d1dce/8d8efa61cb514bc1aa899fd793f7f7bf [2018-09-19 01:29:08,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 01:29:08,578 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 01:29:08,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 01:29:08,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 01:29:08,588 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 01:29:08,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:29:08" (1/1) ... [2018-09-19 01:29:08,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10289462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:08, skipping insertion in model container [2018-09-19 01:29:08,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:29:08" (1/1) ... [2018-09-19 01:29:08,604 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 01:29:08,800 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:29:08,819 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 01:29:08,824 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:29:08,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:08 WrapperNode [2018-09-19 01:29:08,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 01:29:08,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 01:29:08,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 01:29:08,838 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 01:29:08,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:08" (1/1) ... [2018-09-19 01:29:08,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:08" (1/1) ... [2018-09-19 01:29:08,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 01:29:08,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 01:29:08,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 01:29:08,859 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 01:29:08,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:08" (1/1) ... [2018-09-19 01:29:08,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:08" (1/1) ... [2018-09-19 01:29:08,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:08" (1/1) ... [2018-09-19 01:29:08,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:08" (1/1) ... [2018-09-19 01:29:08,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:08" (1/1) ... [2018-09-19 01:29:08,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:08" (1/1) ... [2018-09-19 01:29:08,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:08" (1/1) ... [2018-09-19 01:29:08,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 01:29:08,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 01:29:08,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 01:29:08,877 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 01:29:08,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:08" (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 01:29:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 01:29:08,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 01:29:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 01:29:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 01:29:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 01:29:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 01:29:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 01:29:08,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 01:29:09,200 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 01:29:09,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:29:09 BoogieIcfgContainer [2018-09-19 01:29:09,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 01:29:09,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 01:29:09,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 01:29:09,205 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 01:29:09,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 01:29:08" (1/3) ... [2018-09-19 01:29:09,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e805ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:29:09, skipping insertion in model container [2018-09-19 01:29:09,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:08" (2/3) ... [2018-09-19 01:29:09,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e805ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:29:09, skipping insertion in model container [2018-09-19 01:29:09,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:29:09" (3/3) ... [2018-09-19 01:29:09,209 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call2_true-termination.i [2018-09-19 01:29:09,218 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 01:29:09,225 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 01:29:09,274 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 01:29:09,275 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 01:29:09,275 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 01:29:09,275 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 01:29:09,275 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 01:29:09,275 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 01:29:09,275 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 01:29:09,276 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 01:29:09,276 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 01:29:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-19 01:29:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-19 01:29:09,308 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:09,309 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:09,310 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:09,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1870586046, now seen corresponding path program 1 times [2018-09-19 01:29:09,318 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:09,319 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-19 01:29:09,322 INFO L202 CegarAbsIntRunner]: [0], [4], [17], [21], [24], [26], [32], [33], [34], [36] [2018-09-19 01:29:09,375 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:09,376 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:09,447 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:09,448 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-19 01:29:09,485 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:09,555 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-19 01:29:09,555 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:09,558 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:09,560 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:09,560 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 01:29:09,561 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:09,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 01:29:09,590 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 01:29:09,591 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 01:29:09,594 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-09-19 01:29:09,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:09,617 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-09-19 01:29:09,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 01:29:09,619 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-19 01:29:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:09,630 INFO L225 Difference]: With dead ends: 30 [2018-09-19 01:29:09,630 INFO L226 Difference]: Without dead ends: 13 [2018-09-19 01:29:09,634 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 [2018-09-19 01:29:09,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-19 01:29:09,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-19 01:29:09,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-19 01:29:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-19 01:29:09,675 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-09-19 01:29:09,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:09,676 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-19 01:29:09,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 01:29:09,676 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-19 01:29:09,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-19 01:29:09,677 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:09,677 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:09,677 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:09,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1861068280, now seen corresponding path program 1 times [2018-09-19 01:29:09,678 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:09,678 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-19 01:29:09,679 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [21], [24], [26], [32], [33], [34], [36] [2018-09-19 01:29:09,681 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:09,681 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:09,693 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:09,694 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-19 01:29:09,710 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:09,731 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-19 01:29:09,731 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:09,746 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:09,746 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:09,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 01:29:09,746 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:09,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 01:29:09,748 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 01:29:09,748 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 01:29:09,748 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2018-09-19 01:29:09,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:09,796 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-19 01:29:09,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 01:29:09,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-19 01:29:09,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:09,798 INFO L225 Difference]: With dead ends: 21 [2018-09-19 01:29:09,798 INFO L226 Difference]: Without dead ends: 16 [2018-09-19 01:29:09,800 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 [2018-09-19 01:29:09,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-19 01:29:09,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-09-19 01:29:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-19 01:29:09,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-19 01:29:09,805 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-09-19 01:29:09,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:09,806 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-19 01:29:09,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 01:29:09,806 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-19 01:29:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-19 01:29:09,806 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:09,807 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:09,807 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:09,807 INFO L82 PathProgramCache]: Analyzing trace with hash 996352094, now seen corresponding path program 1 times [2018-09-19 01:29:09,807 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:09,808 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-19 01:29:09,808 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [13], [15], [21], [24], [26], [32], [33], [34], [36] [2018-09-19 01:29:09,810 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:09,810 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:09,879 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 01:29:09,879 INFO L272 AbstractInterpreter]: Visited 13 different actions 41 times. Merged at 3 different actions 21 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-09-19 01:29:09,894 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 01:29:09,913 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 01:29:09,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 01:29:09 BoogieIcfgContainer [2018-09-19 01:29:09,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 01:29:09,915 INFO L168 Benchmark]: Toolchain (without parser) took 1339.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -753.6 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:09,918 INFO L168 Benchmark]: CDTParser took 0.20 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 01:29:09,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.93 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 01:29:09,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.12 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 01:29:09,920 INFO L168 Benchmark]: Boogie Preprocessor took 17.92 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 01:29:09,921 INFO L168 Benchmark]: RCFGBuilder took 323.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -810.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:09,922 INFO L168 Benchmark]: TraceAbstraction took 712.37 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: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:09,929 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 257.93 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 21.12 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 17.92 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 323.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -810.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 712.37 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: 45.9 MB). Peak memory consumption was 45.9 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 B[2048]; [L11] int i; [L12] int tmp; [L13] i = 0 [L13] COND TRUE i < 2048 [L14] tmp = A[i] [L15] B[i] = tmp [L13] i++ [L13] i++ [L13] COND FALSE !(i < 2048) [L17] CALL __VERIFIER_assert(A[2048/2] == B[2048/2]) [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, 0.631578947368421 AbsIntAvgWeakeningVarsNumRemoved, 0.10526315789473684 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-call2_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_01-29-09-957.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array_true-unreach-call2_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_01-29-09-957.csv Received shutdown request...