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_compound_oct_cong.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 17:26:20,900 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 17:26:20,902 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 17:26:20,919 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 17:26:20,920 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 17:26:20,924 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 17:26:20,925 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 17:26:20,927 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 17:26:20,929 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 17:26:20,930 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 17:26:20,930 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 17:26:20,931 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 17:26:20,932 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 17:26:20,933 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 17:26:20,934 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 17:26:20,935 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 17:26:20,936 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 17:26:20,937 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 17:26:20,940 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 17:26:20,941 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 17:26:20,942 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 17:26:20,944 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 17:26:20,946 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 17:26:20,946 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 17:26:20,947 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 17:26:20,948 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 17:26:20,949 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 17:26:20,949 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 17:26:20,950 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 17:26:20,954 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 17:26:20,954 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 17:26:20,955 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 17:26:20,955 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 17:26:20,956 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 17:26:20,957 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 17:26:20,957 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 17:26:20,958 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_oct_cong.epf [2018-12-03 17:26:20,975 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 17:26:20,975 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 17:26:20,976 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 17:26:20,976 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 17:26:20,977 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 17:26:20,977 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 17:26:20,977 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 17:26:20,977 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 17:26:20,978 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 17:26:20,978 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 17:26:20,978 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 17:26:20,978 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 17:26:20,978 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 17:26:20,979 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 17:26:20,979 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 17:26:20,979 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 17:26:20,980 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 17:26:20,980 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 17:26:20,980 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 17:26:20,980 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 17:26:20,981 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 17:26:20,981 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 17:26:20,981 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 17:26:20,981 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 17:26:20,981 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 17:26:20,982 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 17:26:20,982 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 17:26:20,982 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 17:26:20,982 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 17:26:20,982 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 17:26:20,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 17:26:20,983 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 17:26:20,983 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 17:26:20,983 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 17:26:20,983 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 17:26:20,984 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 17:26:20,984 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 17:26:20,984 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 17:26:20,984 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 17:26:21,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 17:26:21,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 17:26:21,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 17:26:21,047 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 17:26:21,047 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 17:26:21,049 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl [2018-12-03 17:26:21,049 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl' [2018-12-03 17:26:21,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 17:26:21,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 17:26:21,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 17:26:21,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 17:26:21,097 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 17:26:21,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:26:21" (1/1) ... [2018-12-03 17:26:21,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:26:21" (1/1) ... [2018-12-03 17:26:21,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 17:26:21,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 17:26:21,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 17:26:21,135 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 17:26:21,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:26:21" (1/1) ... [2018-12-03 17:26:21,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:26:21" (1/1) ... [2018-12-03 17:26:21,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:26:21" (1/1) ... [2018-12-03 17:26:21,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:26:21" (1/1) ... [2018-12-03 17:26:21,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:26:21" (1/1) ... [2018-12-03 17:26:21,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:26:21" (1/1) ... [2018-12-03 17:26:21,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:26:21" (1/1) ... [2018-12-03 17:26:21,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 17:26:21,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 17:26:21,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 17:26:21,158 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 17:26:21,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:26:21" (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 17:26:21,231 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-12-03 17:26:21,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 17:26:21,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 17:26:21,426 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 17:26:21,427 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 17:26:21,427 INFO L202 PluginConnector]: Adding new model ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:26:21 BoogieIcfgContainer [2018-12-03 17:26:21,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 17:26:21,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 17:26:21,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 17:26:21,432 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 17:26:21,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:26:21" (1/2) ... [2018-12-03 17:26:21,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa606ac and model type ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:26:21, skipping insertion in model container [2018-12-03 17:26:21,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:26:21" (2/2) ... [2018-12-03 17:26:21,435 INFO L112 eAbstractionObserver]: Analyzing ICFG ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl [2018-12-03 17:26:21,445 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 17:26:21,453 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 17:26:21,472 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 17:26:21,515 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 17:26:21,516 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 17:26:21,516 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 17:26:21,516 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 17:26:21,516 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 17:26:21,516 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 17:26:21,517 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 17:26:21,517 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 17:26:21,535 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-12-03 17:26:21,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 17:26:21,542 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:26:21,544 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 17:26:21,547 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:26:21,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:26:21,560 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-12-03 17:26:21,564 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:26:21,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:26:21,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:26:21,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:26:21,621 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:26:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:26:21,932 WARN L180 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-12-03 17:26:21,935 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 17:26:21,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 17:26:21,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 17:26:21,937 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 17:26:21,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 17:26:21,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 17:26:21,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 17:26:21,955 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-12-03 17:26:22,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:26:22,017 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-12-03 17:26:22,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 17:26:22,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-12-03 17:26:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:26:22,035 INFO L225 Difference]: With dead ends: 11 [2018-12-03 17:26:22,035 INFO L226 Difference]: Without dead ends: 7 [2018-12-03 17:26:22,039 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 17:26:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-12-03 17:26:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-03 17:26:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-03 17:26:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-12-03 17:26:22,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-12-03 17:26:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:26:22,071 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-12-03 17:26:22,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 17:26:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-12-03 17:26:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-03 17:26:22,072 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:26:22,072 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-12-03 17:26:22,072 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:26:22,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:26:22,073 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-12-03 17:26:22,073 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:26:22,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:26:22,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:26:22,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:26:22,074 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:26:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:26:22,182 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 17:26:22,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 17:26:22,183 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 17:26:22,184 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 7 with the following transitions: [2018-12-03 17:26:22,186 INFO L205 CegarAbsIntRunner]: [0], [2], [6], [8], [10] [2018-12-03 17:26:22,263 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 17:26:22,263 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 17:26:22,556 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-03 17:26:22,558 INFO L272 AbstractInterpreter]: Visited 4 different actions 10 times. Merged at 2 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 17:26:22,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:26:22,571 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-03 17:26:22,692 INFO L227 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 36.67% of their original sizes. [2018-12-03 17:26:22,692 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-03 17:26:23,023 INFO L418 sIntCurrentIteration]: We unified 5 AI predicates to 5 [2018-12-03 17:26:23,024 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-03 17:26:23,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-03 17:26:23,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2018-12-03 17:26:23,025 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 17:26:23,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 17:26:23,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 17:26:23,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-12-03 17:26:23,028 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-12-03 17:26:23,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:26:23,339 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2018-12-03 17:26:23,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 17:26:23,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-12-03 17:26:23,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:26:23,340 INFO L225 Difference]: With dead ends: 7 [2018-12-03 17:26:23,340 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 17:26:23,341 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-12-03 17:26:23,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 17:26:23,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 17:26:23,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 17:26:23,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 17:26:23,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-12-03 17:26:23,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:26:23,343 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 17:26:23,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 17:26:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 17:26:23,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 17:26:23,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 17:26:23,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-03 17:26:23,555 WARN L180 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 178 [2018-12-03 17:26:23,637 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-03 17:26:25,046 WARN L180 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 178 DAG size of output: 44 [2018-12-03 17:26:26,072 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 219 DAG size of output: 66 [2018-12-03 17:26:26,076 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 61) no Hoare annotation was computed. [2018-12-03 17:26:26,076 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 61) no Hoare annotation was computed. [2018-12-03 17:26:26,077 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 61) no Hoare annotation was computed. [2018-12-03 17:26:26,077 INFO L444 ceAbstractionStarter]: At program point L58(lines 32 58) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_main_~flag~5 0))) (.cse1 (+ ULTIMATE.start_main_~b~5 ULTIMATE.start_main_~i~5))) (or (and (<= (+ ULTIMATE.start_main_~a~5 2) ULTIMATE.start_main_~j~5) .cse0 (<= ULTIMATE.start_main_~a~5 (+ ULTIMATE.start_main_~b~5 2)) (<= (+ ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~i~5) 5) (<= ULTIMATE.start_main_~i~5 (+ ULTIMATE.start_main_~flag~5 2147483650)) (<= (+ ULTIMATE.start_main_~a~5 ULTIMATE.start_main_~flag~5) 2147483648) (<= 2 (* 2 ULTIMATE.start_main_~a~5)) (= ULTIMATE.start_main_~i~5 2) (<= .cse1 6)) (and .cse0 (<= (+ ULTIMATE.start_main_~flag~5 ULTIMATE.start_main_~i~5) 2147483647) (<= 0 (+ ULTIMATE.start_main_~a~5 ULTIMATE.start_main_~flag~5 2147483648)) (<= (+ ULTIMATE.start_main_~b~5 1) ULTIMATE.start_main_~j~5) (<= ULTIMATE.start_main_~j~5 (+ ULTIMATE.start_main_~a~5 1)) (<= 0 .cse1) (= ULTIMATE.start_main_~a~5 0) (<= ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~b~5)))) [2018-12-03 17:26:26,077 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 60) no Hoare annotation was computed. [2018-12-03 17:26:26,078 INFO L444 ceAbstractionStarter]: At program point L47(lines 47 59) the Hoare annotation is: false [2018-12-03 17:26:26,078 INFO L444 ceAbstractionStarter]: At program point L35(lines 35 48) the Hoare annotation is: (let ((.cse1 (<= (+ |ULTIMATE.start_main_#t~nondet1| ULTIMATE.start_main_~i~5) 2147483649)) (.cse2 (not (= ULTIMATE.start_main_~flag~5 0))) (.cse4 (<= ULTIMATE.start_main_~i~5 (+ ULTIMATE.start_main_~flag~5 2147483650))) (.cse5 (<= (+ ULTIMATE.start_main_~a~5 ULTIMATE.start_main_~flag~5) 2147483648)) (.cse6 (+ ULTIMATE.start_main_~b~5 ULTIMATE.start_main_~i~5))) (or (let ((.cse0 (+ ULTIMATE.start_main_~i~5 1)) (.cse3 (+ ULTIMATE.start_main_~b~5 1))) (and (<= ULTIMATE.start_main_~a~5 ULTIMATE.start_main_~i~5) (<= ULTIMATE.start_main_~j~5 .cse0) .cse1 (<= |ULTIMATE.start_main_#t~nondet1| (+ ULTIMATE.start_main_~i~5 2147483647)) (<= ULTIMATE.start_main_~flag~5 (+ ULTIMATE.start_main_~j~5 2147483646)) .cse2 (<= ULTIMATE.start_main_~i~5 (+ ULTIMATE.start_main_~a~5 1)) (<= 1 (+ ULTIMATE.start_main_~a~5 ULTIMATE.start_main_~j~5)) (<= ULTIMATE.start_main_~a~5 (+ |ULTIMATE.start_main_#t~nondet1| 2147483649)) (= (mod ULTIMATE.start_main_~i~5 2) 0) (<= .cse0 ULTIMATE.start_main_~j~5) (<= ULTIMATE.start_main_~i~5 .cse3) (<= (+ ULTIMATE.start_main_~b~5 ULTIMATE.start_main_~a~5) 2) (<= 0 (+ ULTIMATE.start_main_~a~5 ULTIMATE.start_main_~flag~5 2147483648)) (<= .cse3 ULTIMATE.start_main_~j~5) .cse4 (<= 0 (+ ULTIMATE.start_main_~b~5 |ULTIMATE.start_main_#t~nondet1| 2147483648)) .cse5 (<= 0 .cse6))) (and .cse1 (<= (+ ULTIMATE.start_main_~a~5 2) ULTIMATE.start_main_~j~5) .cse2 (<= ULTIMATE.start_main_~a~5 (+ ULTIMATE.start_main_~b~5 2)) (<= (+ ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~i~5) 5) .cse4 .cse5 (<= 2 (* 2 ULTIMATE.start_main_~a~5)) (= ULTIMATE.start_main_~i~5 2) (<= 0 (+ |ULTIMATE.start_main_#t~nondet1| ULTIMATE.start_main_~i~5 2147483646)) (<= .cse6 6)))) [2018-12-03 17:26:26,091 INFO L202 PluginConnector]: Adding new model ddlm2013.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:26:26 BoogieIcfgContainer [2018-12-03 17:26:26,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 17:26:26,092 INFO L168 Benchmark]: Toolchain (without parser) took 4997.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 709.4 MB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -436.4 MB). Peak memory consumption was 273.0 MB. Max. memory is 7.1 GB. [2018-12-03 17:26:26,094 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.26 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 17:26:26,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.68 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 17:26:26,095 INFO L168 Benchmark]: Boogie Preprocessor took 22.70 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 17:26:26,096 INFO L168 Benchmark]: RCFGBuilder took 269.59 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 17:26:26,097 INFO L168 Benchmark]: TraceAbstraction took 4662.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 709.4 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -457.5 MB). Peak memory consumption was 251.8 MB. Max. memory is 7.1 GB. [2018-12-03 17:26:26,101 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 0.26 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 37.68 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 22.70 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 269.59 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 4662.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 709.4 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -457.5 MB). Peak memory consumption was 251.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 60]: 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: 47]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((((main_~a~5 + 2 <= main_~j~5 && !(main_~flag~5 == 0)) && main_~a~5 <= main_~b~5 + 2) && main_~j~5 + main_~i~5 <= 5) && main_~i~5 <= main_~flag~5 + 2147483650) && main_~a~5 + main_~flag~5 <= 2147483648) && 2 <= 2 * main_~a~5) && main_~i~5 == 2) && main_~b~5 + main_~i~5 <= 6) || (((((((!(main_~flag~5 == 0) && main_~flag~5 + main_~i~5 <= 2147483647) && 0 <= main_~a~5 + main_~flag~5 + 2147483648) && main_~b~5 + 1 <= main_~j~5) && main_~j~5 <= main_~a~5 + 1) && 0 <= main_~b~5 + main_~i~5) && main_~a~5 == 0) && main_~i~5 <= main_~b~5) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((((((main_~a~5 <= main_~i~5 && main_~j~5 <= main_~i~5 + 1) && main_#t~nondet1 + main_~i~5 <= 2147483649) && main_#t~nondet1 <= main_~i~5 + 2147483647) && main_~flag~5 <= main_~j~5 + 2147483646) && !(main_~flag~5 == 0)) && main_~i~5 <= main_~a~5 + 1) && 1 <= main_~a~5 + main_~j~5) && main_~a~5 <= main_#t~nondet1 + 2147483649) && main_~i~5 % 2 == 0) && main_~i~5 + 1 <= main_~j~5) && main_~i~5 <= main_~b~5 + 1) && main_~b~5 + main_~a~5 <= 2) && 0 <= main_~a~5 + main_~flag~5 + 2147483648) && main_~b~5 + 1 <= main_~j~5) && main_~i~5 <= main_~flag~5 + 2147483650) && 0 <= main_~b~5 + main_#t~nondet1 + 2147483648) && main_~a~5 + main_~flag~5 <= 2147483648) && 0 <= main_~b~5 + main_~i~5) || ((((((((((main_#t~nondet1 + main_~i~5 <= 2147483649 && main_~a~5 + 2 <= main_~j~5) && !(main_~flag~5 == 0)) && main_~a~5 <= main_~b~5 + 2) && main_~j~5 + main_~i~5 <= 5) && main_~i~5 <= main_~flag~5 + 2147483650) && main_~a~5 + main_~flag~5 <= 2147483648) && 2 <= 2 * main_~a~5) && main_~i~5 == 2) && 0 <= main_#t~nondet1 + main_~i~5 + 2147483646) && main_~b~5 + main_~i~5 <= 6) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 4.5s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 2.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 1 SDslu, 2 SDs, 0 SdLazy, 7 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s 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, 0.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.95 AbsIntWeakeningRatio, 0.6 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 232 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1309 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1060 FormulaSimplificationTreeSizeReductionInter, 2.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...