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/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 18:19:33,283 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 18:19:33,285 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 18:19:33,305 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 18:19:33,305 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 18:19:33,308 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 18:19:33,311 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 18:19:33,313 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 18:19:33,316 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 18:19:33,317 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 18:19:33,318 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-03 18:19:33,341 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 18:19:33,354 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 18:19:33,354 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 18:19:33,355 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 18:19:33,355 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 18:19:33,356 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 18:19:33,356 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 18:19:33,356 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 18:19:33,356 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 18:19:33,356 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 18:19:33,357 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 18:19:33,357 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 18:19:33,357 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 18:19:33,357 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 18:19:33,358 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 18:19:33,358 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 18:19:33,358 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 18:19:33,358 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 18:19:33,359 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 18:19:33,359 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 18:19:33,359 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 18:19:33,359 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 18:19:33,359 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 18:19:33,360 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 18:19:33,360 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 18:19:33,360 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 18:19:33,360 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 18:19:33,360 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 18:19:33,361 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 18:19:33,361 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 18:19:33,361 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 18:19:33,361 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 18:19:33,361 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 18:19:33,362 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 18:19:33,362 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 18:19:33,362 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 18:19:33,362 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 18:19:33,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 18:19:33,362 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 18:19:33,363 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 18:19:33,396 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 18:19:33,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 18:19:33,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 18:19:33,414 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 18:19:33,414 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 18:19:33,415 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl [2018-12-03 18:19:33,415 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl' [2018-12-03 18:19:33,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 18:19:33,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 18:19:33,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 18:19:33,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 18:19:33,453 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 18:19:33,471 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 06:19:33" (1/1) ... [2018-12-03 18:19:33,480 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 06:19:33" (1/1) ... [2018-12-03 18:19:33,485 WARN L165 Inliner]: Program contained no entry procedure! [2018-12-03 18:19:33,486 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-12-03 18:19:33,486 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-12-03 18:19:33,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 18:19:33,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 18:19:33,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 18:19:33,489 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 18:19:33,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:19:33" (1/1) ... [2018-12-03 18:19:33,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:19:33" (1/1) ... [2018-12-03 18:19:33,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:19:33" (1/1) ... [2018-12-03 18:19:33,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:19:33" (1/1) ... [2018-12-03 18:19:33,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:19:33" (1/1) ... [2018-12-03 18:19:33,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:19:33" (1/1) ... [2018-12-03 18:19:33,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:19:33" (1/1) ... [2018-12-03 18:19:33,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 18:19:33,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 18:19:33,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 18:19:33,510 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 18:19:33,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:19:33" (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 18:19:33,580 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-12-03 18:19:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 18:19:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 18:19:33,805 INFO L272 CfgBuilder]: Using library mode [2018-12-03 18:19:33,805 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 18:19:33,806 INFO L202 PluginConnector]: Adding new model GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:19:33 BoogieIcfgContainer [2018-12-03 18:19:33,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 18:19:33,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 18:19:33,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 18:19:33,810 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 18:19:33,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:19:33" (1/2) ... [2018-12-03 18:19:33,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8754a4 and model type GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:19:33, skipping insertion in model container [2018-12-03 18:19:33,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:19:33" (2/2) ... [2018-12-03 18:19:33,814 INFO L112 eAbstractionObserver]: Analyzing ICFG GeometricalIntegerCake.bpl [2018-12-03 18:19:33,825 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 18:19:33,833 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-12-03 18:19:33,852 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-12-03 18:19:33,888 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 18:19:33,889 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 18:19:33,889 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 18:19:33,889 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 18:19:33,889 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 18:19:33,889 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 18:19:33,890 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 18:19:33,890 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 18:19:33,906 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-12-03 18:19:33,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-03 18:19:33,913 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:19:33,914 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2018-12-03 18:19:33,916 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-12-03 18:19:33,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:19:33,923 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-12-03 18:19:33,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:19:33,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:19:33,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:19:33,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:19:33,984 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:19:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:19:34,134 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 18:19:34,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 18:19:34,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-03 18:19:34,136 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:19:34,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 18:19:34,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 18:19:34,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:19:34,154 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-12-03 18:19:34,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:19:34,288 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-12-03 18:19:34,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 18:19:34,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-03 18:19:34,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:19:34,333 INFO L225 Difference]: With dead ends: 13 [2018-12-03 18:19:34,333 INFO L226 Difference]: Without dead ends: 8 [2018-12-03 18:19:34,341 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 18:19:34,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-12-03 18:19:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2018-12-03 18:19:34,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-03 18:19:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-12-03 18:19:34,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 2 [2018-12-03 18:19:34,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:19:34,413 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-12-03 18:19:34,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 18:19:34,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-12-03 18:19:34,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 18:19:34,417 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:19:34,417 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 18:19:34,417 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-12-03 18:19:34,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:19:34,418 INFO L82 PathProgramCache]: Analyzing trace with hash 29892, now seen corresponding path program 1 times [2018-12-03 18:19:34,418 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:19:34,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:19:34,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:19:34,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:19:34,419 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:19:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:19:34,493 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 18:19:34,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 18:19:34,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-03 18:19:34,494 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:19:34,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 18:19:34,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 18:19:34,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:19:34,497 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 3 states. [2018-12-03 18:19:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:19:34,573 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-12-03 18:19:34,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 18:19:34,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 18:19:34,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:19:34,575 INFO L225 Difference]: With dead ends: 8 [2018-12-03 18:19:34,575 INFO L226 Difference]: Without dead ends: 7 [2018-12-03 18:19:34,578 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 18:19:34,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-12-03 18:19:34,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-03 18:19:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-03 18:19:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-12-03 18:19:34,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 3 [2018-12-03 18:19:34,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:19:34,585 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-12-03 18:19:34,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 18:19:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-12-03 18:19:34,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 18:19:34,585 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:19:34,586 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 18:19:34,586 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-12-03 18:19:34,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:19:34,587 INFO L82 PathProgramCache]: Analyzing trace with hash 926592, now seen corresponding path program 1 times [2018-12-03 18:19:34,587 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:19:34,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:19:34,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:19:34,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:19:34,589 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:19:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:19:34,848 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 18:19:34,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 18:19:34,848 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 18:19:34,849 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2018-12-03 18:19:34,851 INFO L205 CegarAbsIntRunner]: [0], [2], [3], [6] [2018-12-03 18:19:34,906 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 18:19:34,906 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 18:19:35,031 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 18:19:35,033 INFO L272 AbstractInterpreter]: Visited 4 different actions 7 times. Merged at 3 different actions 3 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 18:19:35,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:19:35,042 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 18:19:35,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 18:19:35,042 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 18:19:35,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:19:35,058 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 18:19:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:19:35,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 18:19:35,301 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 18:19:35,301 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 18:19:35,616 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 18:19:35,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 18:19:35,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2018-12-03 18:19:35,636 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 18:19:35,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 18:19:35,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 18:19:35,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-12-03 18:19:35,637 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 8 states. [2018-12-03 18:19:35,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:19:35,888 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2018-12-03 18:19:35,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 18:19:35,891 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 4 [2018-12-03 18:19:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:19:35,892 INFO L225 Difference]: With dead ends: 9 [2018-12-03 18:19:35,892 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 18:19:35,893 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-12-03 18:19:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 18:19:35,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 18:19:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 18:19:35,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 18:19:35,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2018-12-03 18:19:35,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:19:35,896 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 18:19:35,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 18:19:35,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 18:19:35,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 18:19:35,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 18:19:36,011 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINVARIANTandASSERT(line 30) no Hoare annotation was computed. [2018-12-03 18:19:36,012 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONASSERT(line 36) no Hoare annotation was computed. [2018-12-03 18:19:36,012 INFO L448 ceAbstractionStarter]: For program point mainENTRY(lines 20 38) no Hoare annotation was computed. [2018-12-03 18:19:36,012 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 20 38) no Hoare annotation was computed. [2018-12-03 18:19:36,012 INFO L448 ceAbstractionStarter]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2018-12-03 18:19:36,013 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 18:19:36,013 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 20 38) no Hoare annotation was computed. [2018-12-03 18:19:36,024 INFO L202 PluginConnector]: Adding new model GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 06:19:36 BoogieIcfgContainer [2018-12-03 18:19:36,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 18:19:36,025 INFO L168 Benchmark]: Toolchain (without parser) took 2574.10 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-12-03 18:19:36,027 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 18:19:36,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.37 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 18:19:36,029 INFO L168 Benchmark]: Boogie Preprocessor took 21.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 18:19:36,030 INFO L168 Benchmark]: RCFGBuilder took 296.05 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 18:19:36,031 INFO L168 Benchmark]: TraceAbstraction took 2217.10 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 18:19:36,035 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.37 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 296.05 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2217.10 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: 36]: assertion always holds For all program executions holds that assertion always holds at this location - 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 - 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, 2.1s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 11 SDslu, 1 SDs, 0 SdLazy, 23 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 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, 0.1s 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, 0.9s 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...