java -ea -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/heapseparator/speedup-poc-dd-1-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-15a42f0 [2018-12-18 22:11:11,346 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-18 22:11:11,348 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-18 22:11:11,365 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-12-18 22:11:11,420 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 [2018-12-18 22:11:11,443 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-18 22:11:11,443 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-18 22:11:11,444 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-18 22:11:11,444 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-18 22:11:11,444 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-18 22:11:11,444 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-18 22:11:11,445 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2018-12-18 22:11:11,445 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-18 22:11:11,445 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-18 22:11:11,446 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-18 22:11:11,446 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-18 22:11:11,446 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-18 22:11:11,446 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-18 22:11:11,446 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-18 22:11:11,447 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-18 22:11:11,447 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-18 22:11:11,448 INFO L133 SettingsManager]: * Use SBE=true [2018-12-18 22:11:11,448 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-18 22:11:11,448 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-18 22:11:11,448 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-18 22:11:11,449 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-18 22:11:11,449 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-18 22:11:11,449 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-18 22:11:11,449 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-18 22:11:11,449 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-18 22:11:11,449 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-18 22:11:11,450 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-18 22:11:11,450 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-18 22:11:11,450 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-18 22:11:11,450 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-18 22:11:11,451 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-18 22:11:11,451 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-18 22:11:11,451 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-18 22:11:11,451 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-18 22:11:11,451 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-18 22:11:11,452 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-18 22:11:11,452 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-18 22:11:11,452 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-18 22:11:11,452 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-18 22:11:11,452 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-18 22:11:11,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-18 22:11:11,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-18 22:11:11,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-18 22:11:11,527 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-18 22:11:11,528 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-18 22:11:11,529 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-1-limited.bpl [2018-12-18 22:11:11,529 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-1-limited.bpl' [2018-12-18 22:11:11,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-18 22:11:11,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-18 22:11:11,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-18 22:11:11,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-18 22:11:11,588 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-18 22:11:11,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 10:11:11" (1/1) ... [2018-12-18 22:11:11,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 10:11:11" (1/1) ... [2018-12-18 22:11:11,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-18 22:11:11,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-18 22:11:11,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-18 22:11:11,654 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-18 22:11:11,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 10:11:11" (1/1) ... [2018-12-18 22:11:11,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 10:11:11" (1/1) ... [2018-12-18 22:11:11,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 10:11:11" (1/1) ... [2018-12-18 22:11:11,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 10:11:11" (1/1) ... [2018-12-18 22:11:11,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 10:11:11" (1/1) ... [2018-12-18 22:11:11,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 10:11:11" (1/1) ... [2018-12-18 22:11:11,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 10:11:11" (1/1) ... [2018-12-18 22:11:11,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-18 22:11:11,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-18 22:11:11,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-18 22:11:11,678 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-18 22:11:11,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 10:11:11" (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 [2018-12-18 22:11:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-18 22:11:11,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-18 22:11:12,055 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-18 22:11:12,055 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-18 22:11:12,056 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:11:12 BoogieIcfgContainer [2018-12-18 22:11:12,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-18 22:11:12,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-18 22:11:12,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-18 22:11:12,061 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-18 22:11:12,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 10:11:11" (1/2) ... [2018-12-18 22:11:12,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bab00 and model type speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:11:12, skipping insertion in model container [2018-12-18 22:11:12,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:11:12" (2/2) ... [2018-12-18 22:11:12,065 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-1-limited.bpl [2018-12-18 22:11:12,078 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-18 22:11:12,088 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-18 22:11:12,106 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-18 22:11:12,140 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-18 22:11:12,140 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-18 22:11:12,140 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-18 22:11:12,141 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-18 22:11:12,141 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-18 22:11:12,141 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-18 22:11:12,141 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-18 22:11:12,141 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-18 22:11:12,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-12-18 22:11:12,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-18 22:11:12,162 INFO L394 BasicCegarLoop]: Found error trace [2018-12-18 22:11:12,163 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2018-12-18 22:11:12,165 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-18 22:11:12,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-18 22:11:12,172 INFO L82 PathProgramCache]: Analyzing trace with hash 967, now seen corresponding path program 1 times [2018-12-18 22:11:12,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-18 22:11:12,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-18 22:11:12,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-18 22:11:12,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-18 22:11:12,230 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-18 22:11:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-18 22:11:12,400 INFO L273 TraceCheckUtils]: 0: Hoare triple {8#true} havoc main_p1;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p1 := malloc_ptr;#memory_int := #memory_int[main_p1 := 0]; {10#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} is VALID [2018-12-18 22:11:12,419 INFO L273 TraceCheckUtils]: 1: Hoare triple {10#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} assume !(#memory_int[main_p1] <= 0); {9#false} is VALID [2018-12-18 22:11:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-18 22:11:12,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-18 22:11:12,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-18 22:11:12,427 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-18 22:11:12,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-18 22:11:12,435 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-12-18 22:11:12,441 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2018-12-18 22:11:12,473 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-12-18 22:11:12,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-18 22:11:12,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-18 22:11:12,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-18 22:11:12,497 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-12-18 22:11:12,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-18 22:11:12,671 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-12-18 22:11:12,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-18 22:11:12,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-18 22:11:12,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-18 22:11:12,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-18 22:11:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-12-18 22:11:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-18 22:11:12,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-12-18 22:11:12,684 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 9 transitions. [2018-12-18 22:11:12,726 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-12-18 22:11:12,736 INFO L225 Difference]: With dead ends: 9 [2018-12-18 22:11:12,737 INFO L226 Difference]: Without dead ends: 4 [2018-12-18 22:11:12,740 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 [2018-12-18 22:11:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states. [2018-12-18 22:11:12,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2018-12-18 22:11:12,765 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-12-18 22:11:12,766 INFO L82 GeneralOperation]: Start isEquivalent. First operand 4 states. Second operand 4 states. [2018-12-18 22:11:12,766 INFO L74 IsIncluded]: Start isIncluded. First operand 4 states. Second operand 4 states. [2018-12-18 22:11:12,766 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 4 states. [2018-12-18 22:11:12,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-18 22:11:12,767 INFO L93 Difference]: Finished difference Result 4 states and 4 transitions. [2018-12-18 22:11:12,768 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 4 transitions. [2018-12-18 22:11:12,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-18 22:11:12,768 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-12-18 22:11:12,768 INFO L74 IsIncluded]: Start isIncluded. First operand 4 states. Second operand 4 states. [2018-12-18 22:11:12,769 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 4 states. [2018-12-18 22:11:12,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-18 22:11:12,770 INFO L93 Difference]: Finished difference Result 4 states and 4 transitions. [2018-12-18 22:11:12,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 4 transitions. [2018-12-18 22:11:12,770 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-18 22:11:12,770 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-12-18 22:11:12,770 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-12-18 22:11:12,771 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-12-18 22:11:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-18 22:11:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4 transitions. [2018-12-18 22:11:12,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states and 4 transitions. Word has length 2 [2018-12-18 22:11:12,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-18 22:11:12,774 INFO L480 AbstractCegarLoop]: Abstraction has 4 states and 4 transitions. [2018-12-18 22:11:12,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-18 22:11:12,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 4 transitions. [2018-12-18 22:11:12,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-18 22:11:12,775 INFO L394 BasicCegarLoop]: Found error trace [2018-12-18 22:11:12,775 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-18 22:11:12,775 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-18 22:11:12,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-18 22:11:12,776 INFO L82 PathProgramCache]: Analyzing trace with hash 29921, now seen corresponding path program 1 times [2018-12-18 22:11:12,776 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-18 22:11:12,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-18 22:11:12,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-18 22:11:12,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-18 22:11:12,777 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-18 22:11:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-18 22:11:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-18 22:11:12,818 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-18 22:11:12,834 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-12-18 22:11:12,835 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2018-12-18 22:11:12,835 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2018-12-18 22:11:12,835 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2018-12-18 22:11:12,835 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2018-12-18 22:11:12,835 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2018-12-18 22:11:12,837 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:11:12 BoogieIcfgContainer [2018-12-18 22:11:12,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-18 22:11:12,839 INFO L168 Benchmark]: Toolchain (without parser) took 1254.44 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-12-18 22:11:12,842 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-18 22:11:12,843 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.56 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. [2018-12-18 22:11:12,844 INFO L168 Benchmark]: Boogie Preprocessor took 23.08 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. [2018-12-18 22:11:12,844 INFO L168 Benchmark]: RCFGBuilder took 378.91 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. [2018-12-18 22:11:12,846 INFO L168 Benchmark]: TraceAbstraction took 780.65 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-12-18 22:11:12,850 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.56 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 23.08 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 378.91 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 780.65 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: assertion can be violated assertion can be violated We found a FailurePath: [L30-L31] modifies #valid; [L30-L32] ensures old(#valid)[ptr] == 0; [L30-L33] ensures #valid == old(#valid)[ptr := 1]; [L19] #memory_int[p1] := 0; [L22] #memory_int[p1] := #memory_int[p1] + 1; [L26] assert #memory_int[p1] <= 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3 SDtfs, 2 SDslu, 1 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...