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/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 15:59:53,606 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 15:59:53,609 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 15:59:53,627 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 15:59:53,627 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 15:59:53,628 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 15:59:53,632 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 15:59:53,635 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 15:59:53,637 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 15:59:53,638 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 15:59:53,647 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 15:59:53,647 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 15:59:53,648 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 15:59:53,649 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 15:59:53,652 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 15:59:53,654 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 15:59:53,655 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 15:59:53,657 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 15:59:53,661 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 15:59:53,663 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 15:59:53,664 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 15:59:53,665 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 15:59:53,667 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-12-03 15:59:53,681 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 15:59:53,694 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 15:59:53,695 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 15:59:53,696 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 15:59:53,696 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 15:59:53,696 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 15:59:53,696 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 15:59:53,696 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 15:59:53,697 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 15:59:53,697 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 15:59:53,697 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 15:59:53,697 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 15:59:53,697 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 15:59:53,698 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 15:59:53,698 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 15:59:53,698 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 15:59:53,699 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 15:59:53,699 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 15:59:53,699 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 15:59:53,699 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 15:59:53,699 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 15:59:53,700 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 15:59:53,700 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 15:59:53,700 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 15:59:53,700 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 15:59:53,700 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 15:59:53,700 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 15:59:53,701 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 15:59:53,701 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 15:59:53,701 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 15:59:53,701 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 15:59:53,701 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 15:59:53,702 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 15:59:53,702 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 15:59:53,702 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 15:59:53,702 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 15:59:53,702 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 15:59:53,703 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 15:59:53,703 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 15:59:53,703 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 15:59:53,703 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 15:59:53,703 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 15:59:53,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 15:59:53,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 15:59:53,777 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 15:59:53,779 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 15:59:53,779 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 15:59:53,780 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl [2018-12-03 15:59:53,780 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl' [2018-12-03 15:59:53,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 15:59:53,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 15:59:53,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 15:59:53,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 15:59:53,812 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 15:59:53,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:59:53" (1/1) ... [2018-12-03 15:59:53,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:59:53" (1/1) ... [2018-12-03 15:59:53,846 WARN L165 Inliner]: Program contained no entry procedure! [2018-12-03 15:59:53,847 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-12-03 15:59:53,847 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-12-03 15:59:53,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 15:59:53,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 15:59:53,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 15:59:53,850 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 15:59:53,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:59:53" (1/1) ... [2018-12-03 15:59:53,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:59:53" (1/1) ... [2018-12-03 15:59:53,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:59:53" (1/1) ... [2018-12-03 15:59:53,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:59:53" (1/1) ... [2018-12-03 15:59:53,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:59:53" (1/1) ... [2018-12-03 15:59:53,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:59:53" (1/1) ... [2018-12-03 15:59:53,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:59:53" (1/1) ... [2018-12-03 15:59:53,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 15:59:53,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 15:59:53,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 15:59:53,873 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 15:59:53,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:59:53" (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 15:59:53,942 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-12-03 15:59:53,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 15:59:53,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 15:59:54,191 INFO L272 CfgBuilder]: Using library mode [2018-12-03 15:59:54,192 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 15:59:54,193 INFO L202 PluginConnector]: Adding new model GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:59:54 BoogieIcfgContainer [2018-12-03 15:59:54,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 15:59:54,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 15:59:54,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 15:59:54,198 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 15:59:54,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:59:53" (1/2) ... [2018-12-03 15:59:54,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23df6788 and model type GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:59:54, skipping insertion in model container [2018-12-03 15:59:54,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:59:54" (2/2) ... [2018-12-03 15:59:54,202 INFO L112 eAbstractionObserver]: Analyzing ICFG GeometricalIntegerCake.bpl [2018-12-03 15:59:54,214 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 15:59:54,223 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-12-03 15:59:54,241 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-12-03 15:59:54,275 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 15:59:54,276 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 15:59:54,276 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 15:59:54,276 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 15:59:54,276 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 15:59:54,277 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 15:59:54,277 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 15:59:54,277 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 15:59:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-12-03 15:59:54,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-03 15:59:54,298 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:59:54,299 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2018-12-03 15:59:54,301 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:59:54,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:59:54,308 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-12-03 15:59:54,311 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:59:54,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:59:54,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:59:54,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:59:54,364 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:59:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:59:54,538 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 15:59:54,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 15:59:54,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-03 15:59:54,541 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 15:59:54,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 15:59:54,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 15:59:54,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:59:54,559 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-12-03 15:59:54,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:59:54,709 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-12-03 15:59:54,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 15:59:54,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-03 15:59:54,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:59:54,748 INFO L225 Difference]: With dead ends: 13 [2018-12-03 15:59:54,749 INFO L226 Difference]: Without dead ends: 8 [2018-12-03 15:59:54,764 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 15:59:54,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-12-03 15:59:54,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2018-12-03 15:59:54,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-03 15:59:54,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-12-03 15:59:54,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 2 [2018-12-03 15:59:54,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:59:54,821 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-12-03 15:59:54,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 15:59:54,822 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-12-03 15:59:54,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 15:59:54,822 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:59:54,822 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 15:59:54,823 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:59:54,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:59:54,823 INFO L82 PathProgramCache]: Analyzing trace with hash 29892, now seen corresponding path program 1 times [2018-12-03 15:59:54,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:59:54,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:59:54,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:59:54,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:59:54,825 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:59:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:59:54,851 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 15:59:54,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 15:59:54,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-03 15:59:54,852 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 15:59:54,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 15:59:54,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 15:59:54,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:59:54,855 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 3 states. [2018-12-03 15:59:54,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:59:54,876 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-12-03 15:59:54,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 15:59:54,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 15:59:54,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:59:54,880 INFO L225 Difference]: With dead ends: 8 [2018-12-03 15:59:54,880 INFO L226 Difference]: Without dead ends: 7 [2018-12-03 15:59:54,881 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 15:59:54,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-12-03 15:59:54,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-03 15:59:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-03 15:59:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-12-03 15:59:54,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 3 [2018-12-03 15:59:54,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:59:54,884 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-12-03 15:59:54,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 15:59:54,885 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-12-03 15:59:54,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 15:59:54,885 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:59:54,885 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 15:59:54,886 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:59:54,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:59:54,886 INFO L82 PathProgramCache]: Analyzing trace with hash 926592, now seen corresponding path program 1 times [2018-12-03 15:59:54,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:59:54,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:59:54,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:59:54,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:59:54,888 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:59:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:59:55,054 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 15:59:55,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 15:59:55,055 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 15:59:55,056 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2018-12-03 15:59:55,057 INFO L205 CegarAbsIntRunner]: [0], [2], [3], [6] [2018-12-03 15:59:55,098 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 15:59:55,098 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 15:59:55,192 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 15:59:55,194 INFO L272 AbstractInterpreter]: Visited 4 different actions 4 times. Never merged. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 15:59:55,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:59:55,223 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 15:59:55,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 15:59:55,224 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 15:59:55,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:59:55,237 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 15:59:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:59:55,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 15:59:55,422 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 15:59:55,423 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 15:59:55,806 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 15:59:55,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 15:59:55,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2018-12-03 15:59:55,826 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 15:59:55,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 15:59:55,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 15:59:55,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-12-03 15:59:55,828 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 8 states. [2018-12-03 15:59:56,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:59:56,021 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2018-12-03 15:59:56,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 15:59:56,021 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 4 [2018-12-03 15:59:56,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:59:56,022 INFO L225 Difference]: With dead ends: 9 [2018-12-03 15:59:56,022 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 15:59:56,024 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-12-03 15:59:56,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 15:59:56,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 15:59:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 15:59:56,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 15:59:56,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2018-12-03 15:59:56,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:59:56,027 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 15:59:56,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 15:59:56,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 15:59:56,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 15:59:56,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 15:59:56,120 INFO L448 ceAbstractionStarter]: For program point mainENTRY(lines 20 38) no Hoare annotation was computed. [2018-12-03 15:59:56,120 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 20 38) no Hoare annotation was computed. [2018-12-03 15:59:56,120 INFO L448 ceAbstractionStarter]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2018-12-03 15:59:56,120 INFO L444 ceAbstractionStarter]: At program point L29-2(lines 29 34) the Hoare annotation is: (and (<= (+ (div main_init 2) main_eat) main_cakeLeft) (<= 0 main_eat)) [2018-12-03 15:59:56,121 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINVARIANTandASSERT(line 30) no Hoare annotation was computed. [2018-12-03 15:59:56,121 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 20 38) no Hoare annotation was computed. [2018-12-03 15:59:56,121 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONASSERT(line 36) no Hoare annotation was computed. [2018-12-03 15:59:56,139 INFO L202 PluginConnector]: Adding new model GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 03:59:56 BoogieIcfgContainer [2018-12-03 15:59:56,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 15:59:56,140 INFO L168 Benchmark]: Toolchain (without parser) took 2330.03 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-12-03 15:59:56,143 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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 15:59:56,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.69 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 15:59:56,144 INFO L168 Benchmark]: Boogie Preprocessor took 22.34 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 15:59:56,145 INFO L168 Benchmark]: RCFGBuilder took 320.46 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 15:59:56,146 INFO L168 Benchmark]: TraceAbstraction took 1945.05 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: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. [2018-12-03 15:59:56,153 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 0.19 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 37.69 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 22.34 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 320.46 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 1945.05 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: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: loop invariant is valid and assertion always holds For all program executions holds that loop invariant is valid and assertion always holds at this location - PositiveResult [Line: 36]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: init / 2 + eat <= cakeLeft && 0 <= eat - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 2 error locations. SAFE Result, 1.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 11 SDslu, 1 SDs, 0 SdLazy, 23 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s 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, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 3 NumberOfFragments, 11 HoareAnnotationTreeSize, 1 FomulaSimplifications, 19 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 1 QuantifiedInterpolants, 361 SizeOfPredicates, 1 NumberOfNonLiveVariables, 14 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...