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_compound_exp_cong.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 15:20:32,800 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 15:20:32,802 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 15:20:32,820 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 15:20:32,820 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 15:20:32,821 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 15:20:32,823 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 15:20:32,826 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 15:20:32,828 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 15:20:32,829 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 15:20:32,837 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-03 15:20:32,869 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2018-12-03 15:20:32,883 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 15:20:32,883 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 15:20:32,884 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 15:20:32,884 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 15:20:32,885 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 15:20:32,885 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 15:20:32,885 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 15:20:32,885 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 15:20:32,885 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 15:20:32,886 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 15:20:32,886 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 15:20:32,886 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 15:20:32,886 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 15:20:32,886 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 15:20:32,886 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 15:20:32,887 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 15:20:32,887 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 15:20:32,887 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 15:20:32,888 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 15:20:32,888 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 15:20:32,888 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 15:20:32,888 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 15:20:32,888 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 15:20:32,889 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 15:20:32,889 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 15:20:32,889 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 15:20:32,889 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 15:20:32,889 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 15:20:32,890 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 15:20:32,890 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 15:20:32,890 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 15:20:32,890 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 15:20:32,890 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 15:20:32,891 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 15:20:32,891 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 15:20:32,891 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 15:20:32,891 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 15:20:32,891 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 15:20:32,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 15:20:32,892 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 15:20:32,892 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 15:20:32,921 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 15:20:32,937 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 15:20:32,941 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 15:20:32,942 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 15:20:32,942 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 15:20:32,943 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl [2018-12-03 15:20:32,943 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl' [2018-12-03 15:20:32,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 15:20:32,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 15:20:32,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 15:20:32,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 15:20:32,977 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 15:20:32,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:20:32" (1/1) ... [2018-12-03 15:20:33,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:20:32" (1/1) ... [2018-12-03 15:20:33,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 15:20:33,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 15:20:33,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 15:20:33,012 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 15:20:33,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:20:32" (1/1) ... [2018-12-03 15:20:33,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:20:32" (1/1) ... [2018-12-03 15:20:33,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:20:32" (1/1) ... [2018-12-03 15:20:33,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:20:32" (1/1) ... [2018-12-03 15:20:33,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:20:32" (1/1) ... [2018-12-03 15:20:33,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:20:32" (1/1) ... [2018-12-03 15:20:33,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:20:32" (1/1) ... [2018-12-03 15:20:33,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 15:20:33,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 15:20:33,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 15:20:33,033 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 15:20:33,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:20:32" (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 [2018-12-03 15:20:33,090 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-12-03 15:20:33,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 15:20:33,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 15:20:33,308 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 15:20:33,308 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 15:20:33,309 INFO L202 PluginConnector]: Adding new model count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:20:33 BoogieIcfgContainer [2018-12-03 15:20:33,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 15:20:33,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 15:20:33,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 15:20:33,314 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 15:20:33,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:20:32" (1/2) ... [2018-12-03 15:20:33,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1490cdb9 and model type count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:20:33, skipping insertion in model container [2018-12-03 15:20:33,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:20:33" (2/2) ... [2018-12-03 15:20:33,317 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl [2018-12-03 15:20:33,329 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 15:20:33,341 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 15:20:33,360 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 15:20:33,398 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 15:20:33,399 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 15:20:33,399 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 15:20:33,399 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 15:20:33,399 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 15:20:33,400 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 15:20:33,400 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 15:20:33,400 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 15:20:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-12-03 15:20:33,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 15:20:33,423 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:20:33,424 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 15:20:33,427 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:20:33,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:20:33,434 INFO L82 PathProgramCache]: Analyzing trace with hash 30017, now seen corresponding path program 1 times [2018-12-03 15:20:33,436 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:20:33,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:20:33,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:20:33,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:20:33,496 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:20:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:20:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 15:20:33,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 15:20:33,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 15:20:33,614 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 15:20:33,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 15:20:33,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 15:20:33,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:20:33,641 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-12-03 15:20:33,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:20:33,714 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-03 15:20:33,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 15:20:33,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 15:20:33,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:20:33,728 INFO L225 Difference]: With dead ends: 9 [2018-12-03 15:20:33,729 INFO L226 Difference]: Without dead ends: 5 [2018-12-03 15:20:33,737 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:20:33,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-12-03 15:20:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-12-03 15:20:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-03 15:20:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-12-03 15:20:33,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-12-03 15:20:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:20:33,787 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-12-03 15:20:33,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 15:20:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-12-03 15:20:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 15:20:33,788 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:20:33,788 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 15:20:33,789 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:20:33,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:20:33,789 INFO L82 PathProgramCache]: Analyzing trace with hash 928552, now seen corresponding path program 1 times [2018-12-03 15:20:33,789 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:20:33,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:20:33,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:20:33,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:20:33,791 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:20:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:20:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 15:20:33,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 15:20:33,950 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 15:20:33,951 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2018-12-03 15:20:33,953 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [9] [2018-12-03 15:20:34,007 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 15:20:34,007 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 15:20:34,246 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 15:20:34,252 INFO L272 AbstractInterpreter]: Visited 4 different actions 13 times. Merged at 3 different actions 9 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 15:20:34,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:20:34,269 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 15:20:34,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 15:20:34,269 INFO L192 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 [2018-12-03 15:20:34,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:20:34,280 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 15:20:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:20:34,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 15:20:34,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 15:20:34,332 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 15:20:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 15:20:34,464 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 15:20:34,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-12-03 15:20:34,464 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 15:20:34,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 15:20:34,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 15:20:34,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-03 15:20:34,466 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-12-03 15:20:34,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:20:34,492 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-12-03 15:20:34,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 15:20:34,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-12-03 15:20:34,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:20:34,494 INFO L225 Difference]: With dead ends: 8 [2018-12-03 15:20:34,494 INFO L226 Difference]: Without dead ends: 6 [2018-12-03 15:20:34,495 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-03 15:20:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-12-03 15:20:34,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-12-03 15:20:34,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-03 15:20:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-12-03 15:20:34,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-12-03 15:20:34,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:20:34,498 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-12-03 15:20:34,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 15:20:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-12-03 15:20:34,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-03 15:20:34,499 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:20:34,499 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-12-03 15:20:34,500 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:20:34,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:20:34,500 INFO L82 PathProgramCache]: Analyzing trace with hash 28783137, now seen corresponding path program 2 times [2018-12-03 15:20:34,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:20:34,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:20:34,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:20:34,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:20:34,502 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:20:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:20:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-03 15:20:34,546 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 15:20:34,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 15:20:34,546 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 15:20:34,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 15:20:34,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 15:20:34,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:20:34,548 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 3 states. [2018-12-03 15:20:34,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:20:34,562 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2018-12-03 15:20:34,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 15:20:34,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2018-12-03 15:20:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:20:34,564 INFO L225 Difference]: With dead ends: 6 [2018-12-03 15:20:34,564 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 15:20:34,564 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:20:34,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 15:20:34,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 15:20:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 15:20:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 15:20:34,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2018-12-03 15:20:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:20:34,566 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 15:20:34,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 15:20:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 15:20:34,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 15:20:34,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 15:20:34,603 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 45) no Hoare annotation was computed. [2018-12-03 15:20:34,604 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 45) no Hoare annotation was computed. [2018-12-03 15:20:34,604 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 45) no Hoare annotation was computed. [2018-12-03 15:20:34,604 INFO L444 ceAbstractionStarter]: At program point L42(lines 42 43) the Hoare annotation is: false [2018-12-03 15:20:34,604 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 44) no Hoare annotation was computed. [2018-12-03 15:20:34,605 INFO L444 ceAbstractionStarter]: At program point L34(lines 21 35) the Hoare annotation is: (or (<= 8589934591 ULTIMATE.start_main_~x~5) (<= ULTIMATE.start_main_~y~5 0)) [2018-12-03 15:20:34,614 INFO L202 PluginConnector]: Adding new model count_up_down.i_3.bplTransformedIcfg_BEv2_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 03:20:34 BoogieIcfgContainer [2018-12-03 15:20:34,614 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 15:20:34,615 INFO L168 Benchmark]: Toolchain (without parser) took 1639.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-12-03 15:20:34,616 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 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. [2018-12-03 15:20:34,617 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.62 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. [2018-12-03 15:20:34,618 INFO L168 Benchmark]: Boogie Preprocessor took 20.73 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. [2018-12-03 15:20:34,618 INFO L168 Benchmark]: RCFGBuilder took 276.38 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 15:20:34,619 INFO L168 Benchmark]: TraceAbstraction took 1303.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-12-03 15:20:34,624 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 0.16 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 Procedure Inliner took 34.62 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 20.73 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 276.38 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1303.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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: 42]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 8589934591 <= main_~x~5 || main_~y~5 <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 3 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s 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, 0.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 95 SizeOfPredicates, 1 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...