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/ddlm2013.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 18:57:18,654 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 18:57:18,656 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 18:57:18,673 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 18:57:18,673 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 18:57:18,674 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 18:57:18,676 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 18:57:18,679 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 18:57:18,682 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 18:57:18,683 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 18:57:18,684 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 18:57:18,684 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 18:57:18,685 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 18:57:18,686 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 18:57:18,687 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 18:57:18,688 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 18:57:18,689 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 18:57:18,691 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 18:57:18,693 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 18:57:18,694 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 18:57:18,695 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 18:57:18,697 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 18:57:18,699 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-12-03 18:57:18,709 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 [2018-12-03 18:57:18,733 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 18:57:18,734 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 18:57:18,735 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 18:57:18,735 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 18:57:18,735 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 18:57:18,736 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 18:57:18,736 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 18:57:18,736 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 18:57:18,736 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 18:57:18,736 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2018-12-03 18:57:18,740 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 18:57:18,740 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 18:57:18,740 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 18:57:18,741 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 18:57:18,741 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 18:57:18,742 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 18:57:18,742 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 18:57:18,742 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 18:57:18,742 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 18:57:18,742 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 18:57:18,743 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 18:57:18,743 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 18:57:18,743 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 18:57:18,743 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 18:57:18,743 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 18:57:18,743 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 18:57:18,746 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 18:57:18,746 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 18:57:18,747 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 18:57:18,747 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 18:57:18,747 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 18:57:18,747 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 18:57:18,747 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 18:57:18,748 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 18:57:18,748 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 18:57:18,748 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 18:57:18,748 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 18:57:18,748 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 18:57:18,749 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 18:57:18,749 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 18:57:18,791 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 18:57:18,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 18:57:18,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 18:57:18,813 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 18:57:18,814 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 18:57:18,815 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/ddlm2013.i_3.bpl [2018-12-03 18:57:18,815 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/ddlm2013.i_3.bpl' [2018-12-03 18:57:18,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 18:57:18,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 18:57:18,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 18:57:18,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 18:57:18,878 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 18:57:18,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:57:18" (1/1) ... [2018-12-03 18:57:18,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:57:18" (1/1) ... [2018-12-03 18:57:18,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 18:57:18,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 18:57:18,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 18:57:18,920 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 18:57:18,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:57:18" (1/1) ... [2018-12-03 18:57:18,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:57:18" (1/1) ... [2018-12-03 18:57:18,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:57:18" (1/1) ... [2018-12-03 18:57:18,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:57:18" (1/1) ... [2018-12-03 18:57:18,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:57:18" (1/1) ... [2018-12-03 18:57:18,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:57:18" (1/1) ... [2018-12-03 18:57:18,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:57:18" (1/1) ... [2018-12-03 18:57:18,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 18:57:18,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 18:57:18,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 18:57:18,946 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 18:57:18,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:57:18" (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 18:57:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 18:57:19,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 18:57:19,244 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 18:57:19,244 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 18:57:19,245 INFO L202 PluginConnector]: Adding new model ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:57:19 BoogieIcfgContainer [2018-12-03 18:57:19,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 18:57:19,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 18:57:19,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 18:57:19,249 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 18:57:19,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:57:18" (1/2) ... [2018-12-03 18:57:19,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc8d0ca and model type ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:57:19, skipping insertion in model container [2018-12-03 18:57:19,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:57:19" (2/2) ... [2018-12-03 18:57:19,253 INFO L112 eAbstractionObserver]: Analyzing ICFG ddlm2013.i_3.bpl [2018-12-03 18:57:19,263 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 18:57:19,271 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 18:57:19,290 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 18:57:19,324 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 18:57:19,325 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 18:57:19,325 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 18:57:19,325 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 18:57:19,325 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 18:57:19,325 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 18:57:19,326 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 18:57:19,326 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 18:57:19,341 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-12-03 18:57:19,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 18:57:19,348 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:57:19,349 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 18:57:19,351 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 18:57:19,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:57:19,358 INFO L82 PathProgramCache]: Analyzing trace with hash 925701, now seen corresponding path program 1 times [2018-12-03 18:57:19,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:57:19,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:57:19,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:57:19,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:57:19,418 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:57:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:57:19,842 WARN L180 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 5 [2018-12-03 18:57:19,845 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 18:57:19,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 18:57:19,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 18:57:19,848 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:57:19,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 18:57:19,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 18:57:19,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:57:19,871 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-12-03 18:57:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:57:19,902 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-12-03 18:57:19,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 18:57:19,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-12-03 18:57:19,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:57:19,915 INFO L225 Difference]: With dead ends: 11 [2018-12-03 18:57:19,916 INFO L226 Difference]: Without dead ends: 7 [2018-12-03 18:57:19,919 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:57:19,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-12-03 18:57:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-03 18:57:19,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-03 18:57:19,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-12-03 18:57:19,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-12-03 18:57:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:57:19,956 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-12-03 18:57:19,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 18:57:19,957 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-12-03 18:57:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-03 18:57:19,957 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:57:19,958 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-12-03 18:57:19,958 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 18:57:19,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:57:19,958 INFO L82 PathProgramCache]: Analyzing trace with hash 889531649, now seen corresponding path program 1 times [2018-12-03 18:57:19,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:57:19,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:57:19,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:57:19,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:57:19,960 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:57:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:57:20,328 WARN L180 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 5 [2018-12-03 18:57:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:57:20,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 18:57:20,330 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 18:57:20,330 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 7 with the following transitions: [2018-12-03 18:57:20,332 INFO L205 CegarAbsIntRunner]: [0], [2], [6], [8], [10] [2018-12-03 18:57:20,390 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 18:57:20,390 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 18:57:20,510 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-12-03 18:57:21,222 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 18:57:21,224 INFO L272 AbstractInterpreter]: Visited 5 different actions 46 times. Merged at 4 different actions 41 times. Widened at 3 different actions 21 times. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 18:57:21,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:57:21,263 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 18:57:21,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 18:57:21,263 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 18:57:21,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:57:21,276 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 18:57:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:57:21,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 18:57:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:57:21,538 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 18:57:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:57:21,654 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 18:57:21,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2018-12-03 18:57:21,655 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 18:57:21,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 18:57:21,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 18:57:21,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-12-03 18:57:21,657 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-12-03 18:57:21,900 WARN L180 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-12-03 18:57:21,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:57:21,915 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-03 18:57:21,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 18:57:21,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-12-03 18:57:21,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:57:21,917 INFO L225 Difference]: With dead ends: 9 [2018-12-03 18:57:21,917 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 18:57:21,918 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-12-03 18:57:21,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 18:57:21,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 18:57:21,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 18:57:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 18:57:21,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-12-03 18:57:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:57:21,920 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 18:57:21,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 18:57:21,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 18:57:21,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 18:57:21,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 18:57:22,106 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 12 [2018-12-03 18:57:22,261 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 12 [2018-12-03 18:57:22,265 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 60) no Hoare annotation was computed. [2018-12-03 18:57:22,266 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 60) no Hoare annotation was computed. [2018-12-03 18:57:22,266 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 60) no Hoare annotation was computed. [2018-12-03 18:57:22,266 INFO L444 ceAbstractionStarter]: At program point L57(lines 57 58) the Hoare annotation is: false [2018-12-03 18:57:22,267 INFO L444 ceAbstractionStarter]: At program point L47(lines 30 47) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~a~5 ULTIMATE.start_main_~i~5 1)) (.cse0 (+ ULTIMATE.start_main_~b~5 ULTIMATE.start_main_~j~5))) (and (<= .cse0 .cse1) (<= ULTIMATE.start_main_~a~5 ULTIMATE.start_main_~b~5) (<= .cse1 .cse0) (<= ULTIMATE.start_main_~b~5 ULTIMATE.start_main_~a~5))) [2018-12-03 18:57:22,267 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 59) no Hoare annotation was computed. [2018-12-03 18:57:22,267 INFO L444 ceAbstractionStarter]: At program point L34(lines 34 48) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~a~5 ULTIMATE.start_main_~i~5 1)) (.cse0 (+ ULTIMATE.start_main_~b~5 ULTIMATE.start_main_~j~5))) (and (<= .cse0 .cse1) (<= ULTIMATE.start_main_~a~5 ULTIMATE.start_main_~b~5) (<= .cse1 .cse0) (<= ULTIMATE.start_main_~b~5 ULTIMATE.start_main_~a~5))) [2018-12-03 18:57:22,277 INFO L202 PluginConnector]: Adding new model ddlm2013.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 06:57:22 BoogieIcfgContainer [2018-12-03 18:57:22,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 18:57:22,278 INFO L168 Benchmark]: Toolchain (without parser) took 3403.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 718.8 MB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -714.1 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2018-12-03 18:57:22,280 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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. [2018-12-03 18:57:22,281 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.86 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. [2018-12-03 18:57:22,282 INFO L168 Benchmark]: Boogie Preprocessor took 26.10 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. [2018-12-03 18:57:22,283 INFO L168 Benchmark]: RCFGBuilder took 299.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 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 18:57:22,284 INFO L168 Benchmark]: TraceAbstraction took 3031.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 718.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -735.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 18:57:22,288 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 0.21 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. * Boogie Procedure Inliner took 42.86 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. * Boogie Preprocessor took 26.10 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. * RCFGBuilder took 299.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 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 3031.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 718.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -735.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: 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: 30]: Loop Invariant Derived loop invariant: ((main_~b~5 + main_~j~5 <= main_~a~5 + main_~i~5 + 1 && main_~a~5 <= main_~b~5) && main_~a~5 + main_~i~5 + 1 <= main_~b~5 + main_~j~5) && main_~b~5 <= main_~a~5 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((main_~b~5 + main_~j~5 <= main_~a~5 + main_~i~5 + 1 && main_~a~5 <= main_~b~5) && main_~a~5 + main_~i~5 + 1 <= main_~b~5 + main_~j~5) && main_~b~5 <= main_~a~5 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: false - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 4 SDs, 0 SdLazy, 9 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.9s 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 47 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 86 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 710 SizeOfPredicates, 4 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...