java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/array.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-a9d37a5-m [2019-02-28 10:37:48,627 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-28 10:37:48,629 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-28 10:37:48,643 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-28 10:37:48,644 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-28 10:37:48,645 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-28 10:37:48,647 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-28 10:37:48,649 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-28 10:37:48,651 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-28 10:37:48,652 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-28 10:37:48,653 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-02-28 10:37:48,706 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2019-02-28 10:37:48,722 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-28 10:37:48,722 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-28 10:37:48,723 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-28 10:37:48,723 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-28 10:37:48,723 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-28 10:37:48,723 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-28 10:37:48,724 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-28 10:37:48,724 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-28 10:37:48,725 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-28 10:37:48,725 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-02-28 10:37:48,725 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-02-28 10:37:48,725 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-28 10:37:48,725 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-28 10:37:48,726 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-28 10:37:48,727 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-28 10:37:48,727 INFO L133 SettingsManager]: * Use SBE=true [2019-02-28 10:37:48,727 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-28 10:37:48,727 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-28 10:37:48,728 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-28 10:37:48,728 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-28 10:37:48,728 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-28 10:37:48,728 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-28 10:37:48,728 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-28 10:37:48,728 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-28 10:37:48,729 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-28 10:37:48,730 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-28 10:37:48,731 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-28 10:37:48,731 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-28 10:37:48,731 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-28 10:37:48,731 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-28 10:37:48,731 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 10:37:48,732 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-28 10:37:48,732 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-28 10:37:48,732 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-28 10:37:48,732 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-28 10:37:48,732 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-28 10:37:48,733 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in [2019-02-28 10:37:48,733 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-28 10:37:48,733 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-28 10:37:48,790 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-28 10:37:48,804 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-28 10:37:48,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-28 10:37:48,811 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-28 10:37:48,811 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-28 10:37:48,812 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array.i_3.bpl [2019-02-28 10:37:48,813 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array.i_3.bpl' [2019-02-28 10:37:48,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-28 10:37:48,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-28 10:37:48,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-28 10:37:48,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-28 10:37:48,860 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-28 10:37:48,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-28 10:37:48,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-28 10:37:48,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-28 10:37:48,897 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-28 10:37:48,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-28 10:37:48,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-28 10:37:48,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-28 10:37:48,920 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-28 10:37:48,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (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:16092 -smt2 -in -t:200000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 10:37:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-28 10:37:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-28 10:37:49,243 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-28 10:37:49,243 INFO L286 CfgBuilder]: Removed 1 assue(true) statements. [2019-02-28 10:37:49,245 INFO L202 PluginConnector]: Adding new model array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:37:49 BoogieIcfgContainer [2019-02-28 10:37:49,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-28 10:37:49,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-28 10:37:49,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-28 10:37:49,251 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-28 10:37:49,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/2) ... [2019-02-28 10:37:49,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5916f799 and model type array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.02 10:37:49, skipping insertion in model container [2019-02-28 10:37:49,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:37:49" (2/2) ... [2019-02-28 10:37:49,254 INFO L112 eAbstractionObserver]: Analyzing ICFG array.i_3.bpl [2019-02-28 10:37:49,265 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-28 10:37:49,273 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-02-28 10:37:49,291 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-02-28 10:37:49,326 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-28 10:37:49,326 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-28 10:37:49,327 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-28 10:37:49,327 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-28 10:37:49,327 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-28 10:37:49,327 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-28 10:37:49,327 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-28 10:37:49,327 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-28 10:37:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-02-28 10:37:49,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:37:49,359 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:37:49,360 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:37:49,363 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:37:49,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:37:49,375 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2019-02-28 10:37:49,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:37:49,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:37:49,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:37:49,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:37:49,424 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:37:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:37:49,907 WARN L181 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 13 [2019-02-28 10:37:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:37:49,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-28 10:37:49,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-02-28 10:37:49,913 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 10:37:49,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-28 10:37:49,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-28 10:37:49,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 10:37:49,936 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-02-28 10:37:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:37:49,989 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-02-28 10:37:49,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-28 10:37:49,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-02-28 10:37:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:37:50,007 INFO L225 Difference]: With dead ends: 9 [2019-02-28 10:37:50,007 INFO L226 Difference]: Without dead ends: 5 [2019-02-28 10:37:50,015 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 10:37:50,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-02-28 10:37:50,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-02-28 10:37:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-02-28 10:37:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-02-28 10:37:50,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-02-28 10:37:50,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:37:50,055 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-02-28 10:37:50,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-28 10:37:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-02-28 10:37:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-02-28 10:37:50,056 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:37:50,056 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-02-28 10:37:50,057 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:37:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:37:50,057 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2019-02-28 10:37:50,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:37:50,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:37:50,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:37:50,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:37:50,059 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:37:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:37:50,311 WARN L181 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 5 [2019-02-28 10:37:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:37:50,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:37:50,430 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:37:50,431 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2019-02-28 10:37:50,433 INFO L207 CegarAbsIntRunner]: [0], [5], [7], [9] [2019-02-28 10:37:50,509 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 10:37:50,509 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:37:50,603 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-02-28 10:37:52,926 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:37:52,928 INFO L272 AbstractInterpreter]: Visited 4 different actions 52 times. Merged at 3 different actions 48 times. Widened at 2 different actions 26 times. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-28 10:37:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:37:52,937 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:37:52,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:37:52,938 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-02-28 10:37:52,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:37:52,954 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:37:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:37:52,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 10 conjunts are in the unsatisfiable core [2019-02-28 10:37:52,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:37:53,092 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-02-28 10:37:53,094 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:37:53,116 INFO L315 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:37:53,117 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2019-02-28 10:37:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:37:53,151 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:37:53,190 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2019-02-28 10:37:53,191 INFO L315 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-02-28 10:37:53,218 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:37:53,241 INFO L315 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:37:53,241 INFO L209 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2019-02-28 10:37:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:37:53,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:37:53,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2019-02-28 10:37:53,303 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:37:53,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:37:53,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:37:53,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-02-28 10:37:53,305 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 6 states. [2019-02-28 10:37:53,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:37:53,387 INFO L93 Difference]: Finished difference Result 6 states and 7 transitions. [2019-02-28 10:37:53,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-28 10:37:53,388 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-02-28 10:37:53,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:37:53,388 INFO L225 Difference]: With dead ends: 6 [2019-02-28 10:37:53,388 INFO L226 Difference]: Without dead ends: 0 [2019-02-28 10:37:53,389 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-02-28 10:37:53,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-02-28 10:37:53,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-02-28 10:37:53,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-02-28 10:37:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-02-28 10:37:53,391 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-02-28 10:37:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:37:53,391 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-02-28 10:37:53,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-28 10:37:53,391 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-02-28 10:37:53,392 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-28 10:37:53,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-02-28 10:37:53,638 WARN L181 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2019-02-28 10:37:53,641 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 53) no Hoare annotation was computed. [2019-02-28 10:37:53,641 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 53) no Hoare annotation was computed. [2019-02-28 10:37:53,642 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 53) no Hoare annotation was computed. [2019-02-28 10:37:53,642 INFO L444 ceAbstractionStarter]: At program point L39(lines 39 51) the Hoare annotation is: false [2019-02-28 10:37:53,642 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 52) no Hoare annotation was computed. [2019-02-28 10:37:53,643 INFO L444 ceAbstractionStarter]: At program point L50(lines 26 50) the Hoare annotation is: (or (<= ULTIMATE.start_main_~menor~5 (select ULTIMATE.start_main_~array~5 0)) (and (= ULTIMATE.start_main_~j~5 0) (<= (div ULTIMATE.start_main_~SIZE~5 4294967296) 0) (<= (+ ULTIMATE.start_main_~j~5 1) ULTIMATE.start_main_~SIZE~5))) [2019-02-28 10:37:53,657 INFO L202 PluginConnector]: Adding new model array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.02 10:37:53 BoogieIcfgContainer [2019-02-28 10:37:53,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-02-28 10:37:53,657 INFO L168 Benchmark]: Toolchain (without parser) took 4799.44 ms. Allocated memory was 137.9 MB in the beginning and 341.8 MB in the end (delta: 203.9 MB). Free memory was 104.2 MB in the beginning and 107.3 MB in the end (delta: -3.1 MB). Peak memory consumption was 200.9 MB. Max. memory is 7.1 GB. [2019-02-28 10:37:53,659 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory is still 105.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-02-28 10:37:53,660 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.70 ms. Allocated memory is still 137.9 MB. Free memory was 104.0 MB in the beginning and 102.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-02-28 10:37:53,661 INFO L168 Benchmark]: Boogie Preprocessor took 22.48 ms. Allocated memory is still 137.9 MB. Free memory was 102.4 MB in the beginning and 101.4 MB in the end (delta: 933.3 kB). Peak memory consumption was 933.3 kB. Max. memory is 7.1 GB. [2019-02-28 10:37:53,662 INFO L168 Benchmark]: RCFGBuilder took 326.35 ms. Allocated memory is still 137.9 MB. Free memory was 101.2 MB in the beginning and 91.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-02-28 10:37:53,663 INFO L168 Benchmark]: TraceAbstraction took 4410.58 ms. Allocated memory was 137.9 MB in the beginning and 341.8 MB in the end (delta: 203.9 MB). Free memory was 91.7 MB in the beginning and 107.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 188.4 MB. Max. memory is 7.1 GB. [2019-02-28 10:37:53,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory is still 105.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.70 ms. Allocated memory is still 137.9 MB. Free memory was 104.0 MB in the beginning and 102.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.48 ms. Allocated memory is still 137.9 MB. Free memory was 102.4 MB in the beginning and 101.4 MB in the end (delta: 933.3 kB). Peak memory consumption was 933.3 kB. Max. memory is 7.1 GB. * RCFGBuilder took 326.35 ms. Allocated memory is still 137.9 MB. Free memory was 101.2 MB in the beginning and 91.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4410.58 ms. Allocated memory was 137.9 MB in the beginning and 341.8 MB in the end (delta: 203.9 MB). Free memory was 91.7 MB in the beginning and 107.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 188.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 52]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: main_~menor~5 <= main_~array~5[0] || ((main_~j~5 == 0 && main_~SIZE~5 / 4294967296 <= 0) && main_~j~5 + 1 <= main_~SIZE~5) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.5s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 21 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 143 SizeOfPredicates, 6 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...