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_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 05:01:09,950 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 05:01:09,952 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 05:01:09,964 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 05:01:09,965 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 05:01:09,966 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 05:01:09,967 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 05:01:09,969 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 05:01:09,970 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 05:01:09,971 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 05:01:09,972 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 05:01:09,973 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 05:01:09,973 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 05:01:09,974 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 05:01:09,976 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 05:01:09,976 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 05:01:09,977 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 05:01:09,980 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 05:01:09,984 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 05:01:09,988 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 05:01:09,989 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 05:01:09,993 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 05:01:09,996 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 05:01:10,013 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-19 05:01:10,041 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 05:01:10,041 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 05:01:10,042 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 05:01:10,042 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 05:01:10,043 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 05:01:10,043 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 05:01:10,043 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-19 05:01:10,043 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 05:01:10,044 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-19 05:01:10,044 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-19 05:01:10,044 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 05:01:10,045 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 05:01:10,045 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 05:01:10,045 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 05:01:10,046 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 05:01:10,046 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 05:01:10,046 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 05:01:10,046 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 05:01:10,046 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 05:01:10,047 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 05:01:10,047 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 05:01:10,047 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 05:01:10,047 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 05:01:10,047 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 05:01:10,048 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 05:01:10,048 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 05:01:10,048 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 05:01:10,048 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 05:01:10,049 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 05:01:10,049 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 05:01:10,049 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 05:01:10,049 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 05:01:10,049 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 05:01:10,050 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 05:01:10,050 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 05:01:10,093 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 05:01:10,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 05:01:10,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 05:01:10,111 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 05:01:10,112 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 05:01:10,113 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i [2018-09-19 05:01:10,488 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e744ce00f/464da5041f574a51924a7684f7dc8299/FLAGdd110f071 [2018-09-19 05:01:10,652 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 05:01:10,652 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i [2018-09-19 05:01:10,659 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e744ce00f/464da5041f574a51924a7684f7dc8299/FLAGdd110f071 [2018-09-19 05:01:10,675 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e744ce00f/464da5041f574a51924a7684f7dc8299 [2018-09-19 05:01:10,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 05:01:10,689 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 05:01:10,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 05:01:10,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 05:01:10,697 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 05:01:10,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 05:01:10" (1/1) ... [2018-09-19 05:01:10,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b0699e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:10, skipping insertion in model container [2018-09-19 05:01:10,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 05:01:10" (1/1) ... [2018-09-19 05:01:10,714 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 05:01:10,917 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 05:01:10,939 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 05:01:10,945 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 05:01:10,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:10 WrapperNode [2018-09-19 05:01:10,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 05:01:10,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 05:01:10,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 05:01:10,961 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 05:01:10,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:10" (1/1) ... [2018-09-19 05:01:10,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:10" (1/1) ... [2018-09-19 05:01:10,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 05:01:10,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 05:01:10,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 05:01:10,987 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 05:01:10,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:10" (1/1) ... [2018-09-19 05:01:10,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:10" (1/1) ... [2018-09-19 05:01:10,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:10" (1/1) ... [2018-09-19 05:01:10,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:10" (1/1) ... [2018-09-19 05:01:11,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:10" (1/1) ... [2018-09-19 05:01:11,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:10" (1/1) ... [2018-09-19 05:01:11,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:10" (1/1) ... [2018-09-19 05:01:11,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 05:01:11,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 05:01:11,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 05:01:11,009 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 05:01:11,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:10" (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 05:01:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 05:01:11,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 05:01:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 05:01:11,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 05:01:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 05:01:11,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 05:01:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 05:01:11,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 05:01:11,387 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 05:01:11,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 05:01:11 BoogieIcfgContainer [2018-09-19 05:01:11,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 05:01:11,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 05:01:11,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 05:01:11,395 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 05:01:11,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 05:01:10" (1/3) ... [2018-09-19 05:01:11,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17eac467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 05:01:11, skipping insertion in model container [2018-09-19 05:01:11,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:10" (2/3) ... [2018-09-19 05:01:11,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17eac467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 05:01:11, skipping insertion in model container [2018-09-19 05:01:11,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 05:01:11" (3/3) ... [2018-09-19 05:01:11,399 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call1_true-termination.i [2018-09-19 05:01:11,410 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 05:01:11,419 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 05:01:11,472 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 05:01:11,473 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 05:01:11,473 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 05:01:11,473 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 05:01:11,473 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 05:01:11,473 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 05:01:11,474 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 05:01:11,474 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 05:01:11,474 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 05:01:11,492 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-19 05:01:11,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-19 05:01:11,499 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 05:01:11,500 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 05:01:11,501 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 05:01:11,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1870586046, now seen corresponding path program 1 times [2018-09-19 05:01:11,510 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 05:01:11,511 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-19 05:01:11,513 INFO L202 CegarAbsIntRunner]: [0], [4], [17], [21], [24], [26], [32], [33], [34], [36] [2018-09-19 05:01:11,548 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-19 05:01:11,548 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 05:01:11,603 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 05:01:11,605 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-19 05:01:11,616 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 05:01:11,691 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-19 05:01:11,691 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 05:01:11,697 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 05:01:11,698 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 05:01:11,698 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 05:01:11,699 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 05:01:11,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 05:01:11,730 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 05:01:11,731 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 05:01:11,739 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-09-19 05:01:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 05:01:11,797 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-09-19 05:01:11,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 05:01:11,808 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-19 05:01:11,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 05:01:11,828 INFO L225 Difference]: With dead ends: 30 [2018-09-19 05:01:11,829 INFO L226 Difference]: Without dead ends: 13 [2018-09-19 05:01:11,833 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 05:01:11,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-19 05:01:11,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-19 05:01:11,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-19 05:01:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-19 05:01:11,869 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-09-19 05:01:11,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 05:01:11,870 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-19 05:01:11,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 05:01:11,870 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-19 05:01:11,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-19 05:01:11,871 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 05:01:11,871 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 05:01:11,872 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 05:01:11,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1861068280, now seen corresponding path program 1 times [2018-09-19 05:01:11,873 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 05:01:11,873 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-19 05:01:11,873 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [21], [24], [26], [32], [33], [34], [36] [2018-09-19 05:01:11,875 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-19 05:01:11,875 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 05:01:11,889 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 05:01:11,889 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-19 05:01:11,921 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 05:01:11,929 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-19 05:01:11,930 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 05:01:11,955 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 05:01:11,955 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 05:01:11,955 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 05:01:11,956 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 05:01:11,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 05:01:11,957 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 05:01:11,957 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 05:01:11,958 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2018-09-19 05:01:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 05:01:11,985 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-19 05:01:11,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 05:01:11,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-19 05:01:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 05:01:11,987 INFO L225 Difference]: With dead ends: 21 [2018-09-19 05:01:11,988 INFO L226 Difference]: Without dead ends: 16 [2018-09-19 05:01:11,989 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 05:01:11,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-19 05:01:11,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-09-19 05:01:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-19 05:01:11,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-19 05:01:11,994 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-09-19 05:01:11,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 05:01:11,994 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-19 05:01:11,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 05:01:11,994 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-19 05:01:11,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-19 05:01:11,995 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 05:01:11,995 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 05:01:11,996 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 05:01:11,996 INFO L82 PathProgramCache]: Analyzing trace with hash 996352094, now seen corresponding path program 1 times [2018-09-19 05:01:11,996 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 05:01:11,996 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-19 05:01:11,997 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [13], [15], [21], [24], [26], [32], [33], [34], [36] [2018-09-19 05:01:11,998 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-19 05:01:11,998 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 05:01:12,023 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 05:01:12,024 INFO L272 AbstractInterpreter]: Visited 13 different actions 36 times. Merged at 3 different actions 17 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 3 variables. [2018-09-19 05:01:12,051 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 05:01:12,067 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 05:01:12,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 05:01:12 BoogieIcfgContainer [2018-09-19 05:01:12,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 05:01:12,069 INFO L168 Benchmark]: Toolchain (without parser) took 1382.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 05:01:12,071 INFO L168 Benchmark]: CDTParser took 0.22 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 05:01:12,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.48 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 05:01:12,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.05 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 05:01:12,074 INFO L168 Benchmark]: Boogie Preprocessor took 22.19 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 05:01:12,074 INFO L168 Benchmark]: RCFGBuilder took 379.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-19 05:01:12,076 INFO L168 Benchmark]: TraceAbstraction took 677.25 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: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2018-09-19 05:01:12,081 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 270.48 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 25.05 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 22.19 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 379.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 677.25 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: 30.3 MB). Peak memory consumption was 30.3 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, 1.0 AbsIntWeakeningRatio, 0.42105263157894735 AbsIntAvgWeakeningVarsNumRemoved, 0.0 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_INT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_05-01-12-095.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_05-01-12-095.csv Received shutdown request...