java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-7-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-1ae3202 [2019-03-04 16:54:41,961 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-03-04 16:54:41,963 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-03-04 16:54:41,975 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-03-04 16:54:42,008 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2019-03-04 16:54:42,021 INFO L110 SettingsManager]: Loading preferences was successful [2019-03-04 16:54:42,021 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-03-04 16:54:42,022 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-03-04 16:54:42,022 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-03-04 16:54:42,022 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-03-04 16:54:42,022 INFO L133 SettingsManager]: * User list type=DISABLED [2019-03-04 16:54:42,023 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-03-04 16:54:42,023 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-03-04 16:54:42,023 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-03-04 16:54:42,023 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-03-04 16:54:42,023 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-03-04 16:54:42,024 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-03-04 16:54:42,027 INFO L133 SettingsManager]: * Interval Domain=false [2019-03-04 16:54:42,028 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-03-04 16:54:42,028 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-03-04 16:54:42,028 INFO L133 SettingsManager]: * Use SBE=true [2019-03-04 16:54:42,028 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-03-04 16:54:42,028 INFO L133 SettingsManager]: * sizeof long=4 [2019-03-04 16:54:42,029 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-03-04 16:54:42,031 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-03-04 16:54:42,031 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-03-04 16:54:42,032 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-03-04 16:54:42,032 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-03-04 16:54:42,032 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-03-04 16:54:42,032 INFO L133 SettingsManager]: * sizeof long double=12 [2019-03-04 16:54:42,032 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-03-04 16:54:42,033 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-03-04 16:54:42,033 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-03-04 16:54:42,033 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-03-04 16:54:42,033 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-03-04 16:54:42,033 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-03-04 16:54:42,034 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-03-04 16:54:42,034 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-03-04 16:54:42,034 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-03-04 16:54:42,034 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-03-04 16:54:42,034 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-03-04 16:54:42,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-03-04 16:54:42,036 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-03-04 16:54:42,036 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-03-04 16:54:42,075 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-03-04 16:54:42,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-03-04 16:54:42,095 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-03-04 16:54:42,097 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-03-04 16:54:42,097 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-03-04 16:54:42,098 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-7-limited.bpl [2019-03-04 16:54:42,099 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-7-limited.bpl' [2019-03-04 16:54:42,151 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-03-04 16:54:42,153 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-03-04 16:54:42,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-03-04 16:54:42,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-03-04 16:54:42,155 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-03-04 16:54:42,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:54:42" (1/1) ... [2019-03-04 16:54:42,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:54:42" (1/1) ... [2019-03-04 16:54:42,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-03-04 16:54:42,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-03-04 16:54:42,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-03-04 16:54:42,224 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-03-04 16:54:42,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:54:42" (1/1) ... [2019-03-04 16:54:42,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:54:42" (1/1) ... [2019-03-04 16:54:42,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:54:42" (1/1) ... [2019-03-04 16:54:42,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:54:42" (1/1) ... [2019-03-04 16:54:42,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:54:42" (1/1) ... [2019-03-04 16:54:42,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:54:42" (1/1) ... [2019-03-04 16:54:42,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:54:42" (1/1) ... [2019-03-04 16:54:42,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-03-04 16:54:42,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-03-04 16:54:42,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-03-04 16:54:42,268 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-03-04 16:54:42,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:54:42" (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 [2019-03-04 16:54:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-03-04 16:54:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-03-04 16:54:42,715 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-03-04 16:54:42,715 INFO L286 CfgBuilder]: Removed 17 assue(true) statements. [2019-03-04 16:54:42,716 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:54:42 BoogieIcfgContainer [2019-03-04 16:54:42,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-03-04 16:54:42,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-03-04 16:54:42,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-03-04 16:54:42,729 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-03-04 16:54:42,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:54:42" (1/2) ... [2019-03-04 16:54:42,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b98a1e3 and model type speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 04:54:42, skipping insertion in model container [2019-03-04 16:54:42,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-7-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:54:42" (2/2) ... [2019-03-04 16:54:42,738 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-7-limited.bpl [2019-03-04 16:54:42,749 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-03-04 16:54:42,757 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-03-04 16:54:42,774 INFO L257 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-03-04 16:54:42,812 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-03-04 16:54:42,812 INFO L383 AbstractCegarLoop]: Hoare is true [2019-03-04 16:54:42,813 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-03-04 16:54:42,813 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-03-04 16:54:42,813 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-03-04 16:54:42,813 INFO L387 AbstractCegarLoop]: Difference is false [2019-03-04 16:54:42,813 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-03-04 16:54:42,814 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-03-04 16:54:42,831 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-03-04 16:54:42,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-03-04 16:54:42,837 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:54:42,838 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-03-04 16:54:42,842 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:54:42,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:54:42,851 INFO L82 PathProgramCache]: Analyzing trace with hash 992, now seen corresponding path program 1 times [2019-03-04 16:54:42,853 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-03-04 16:54:42,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:54:42,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:54:42,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:54:42,908 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-03-04 16:54:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:54:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:54:43,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-03-04 16:54:43,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-03-04 16:54:43,058 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-03-04 16:54:43,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-03-04 16:54:43,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-03-04 16:54:43,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-03-04 16:54:43,075 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-03-04 16:54:43,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:54:43,314 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2019-03-04 16:54:43,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-03-04 16:54:43,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-03-04 16:54:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:54:43,335 INFO L225 Difference]: With dead ends: 33 [2019-03-04 16:54:43,336 INFO L226 Difference]: Without dead ends: 28 [2019-03-04 16:54:43,340 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 [2019-03-04 16:54:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-03-04 16:54:43,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 16. [2019-03-04 16:54:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-03-04 16:54:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 29 transitions. [2019-03-04 16:54:43,384 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 29 transitions. Word has length 2 [2019-03-04 16:54:43,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:54:43,391 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 29 transitions. [2019-03-04 16:54:43,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-03-04 16:54:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 29 transitions. [2019-03-04 16:54:43,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-03-04 16:54:43,392 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:54:43,392 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-03-04 16:54:43,393 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:54:43,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:54:43,394 INFO L82 PathProgramCache]: Analyzing trace with hash 30816, now seen corresponding path program 1 times [2019-03-04 16:54:43,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-03-04 16:54:43,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:54:43,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:54:43,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:54:43,397 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-03-04 16:54:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:54:43,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:54:43,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-03-04 16:54:43,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-03-04 16:54:43,498 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-03-04 16:54:43,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-03-04 16:54:43,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-03-04 16:54:43,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-03-04 16:54:43,501 INFO L87 Difference]: Start difference. First operand 16 states and 29 transitions. Second operand 3 states. [2019-03-04 16:54:43,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:54:43,755 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2019-03-04 16:54:43,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-03-04 16:54:43,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-03-04 16:54:43,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:54:43,757 INFO L225 Difference]: With dead ends: 28 [2019-03-04 16:54:43,757 INFO L226 Difference]: Without dead ends: 27 [2019-03-04 16:54:43,758 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 [2019-03-04 16:54:43,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-03-04 16:54:43,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2019-03-04 16:54:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-03-04 16:54:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 30 transitions. [2019-03-04 16:54:43,763 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 30 transitions. Word has length 3 [2019-03-04 16:54:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:54:43,763 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 30 transitions. [2019-03-04 16:54:43,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-03-04 16:54:43,764 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 30 transitions. [2019-03-04 16:54:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-03-04 16:54:43,764 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:54:43,764 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-03-04 16:54:43,765 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:54:43,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:54:43,765 INFO L82 PathProgramCache]: Analyzing trace with hash 30380, now seen corresponding path program 1 times [2019-03-04 16:54:43,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-03-04 16:54:43,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:54:43,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:54:43,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:54:43,767 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-03-04 16:54:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:54:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:54:43,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:54:43,909 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-03-04 16:54:43,910 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-03-04 16:54:43,912 INFO L207 CegarAbsIntRunner]: [0], [18], [31] [2019-03-04 16:54:43,965 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-03-04 16:54:43,965 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-03-04 16:55:00,267 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-03-04 16:55:00,269 INFO L272 AbstractInterpreter]: Visited 3 different actions 13 times. Merged at 1 different actions 5 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-03-04 16:55:00,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:55:00,278 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-03-04 16:56:10,375 INFO L227 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 77.27% of their original sizes. [2019-03-04 16:56:10,375 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-03-04 16:59:28,849 INFO L420 sIntCurrentIteration]: We unified 2 AI predicates to 2 [2019-03-04 16:59:28,849 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-03-04 16:59:28,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-03-04 16:59:28,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2019-03-04 16:59:28,850 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-03-04 16:59:28,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-03-04 16:59:28,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-03-04 16:59:28,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-03-04 16:59:28,851 INFO L87 Difference]: Start difference. First operand 17 states and 30 transitions. Second operand 4 states. [2019-03-04 16:59:51,347 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-03-04 16:59:51,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-03-04 16:59:51,349 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkValidity(IncrementalHoareTripleChecker.java:666) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternal(AbsIntHoareTripleChecker.java:186) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:72) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:699) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 41 more [2019-03-04 16:59:51,352 INFO L168 Benchmark]: Toolchain (without parser) took 309200.52 ms. Allocated memory was 131.6 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 103.3 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2019-03-04 16:59:51,354 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 131.6 MB. Free memory is still 104.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-03-04 16:59:51,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.61 ms. Allocated memory is still 131.6 MB. Free memory was 103.1 MB in the beginning and 100.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-03-04 16:59:51,356 INFO L168 Benchmark]: Boogie Preprocessor took 40.85 ms. Allocated memory is still 131.6 MB. Free memory was 100.8 MB in the beginning and 99.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-03-04 16:59:51,357 INFO L168 Benchmark]: RCFGBuilder took 452.42 ms. Allocated memory is still 131.6 MB. Free memory was 99.6 MB in the beginning and 87.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2019-03-04 16:59:51,358 INFO L168 Benchmark]: TraceAbstraction took 308633.62 ms. Allocated memory was 131.6 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 86.8 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2019-03-04 16:59:51,363 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 131.6 MB. Free memory is still 104.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 69.61 ms. Allocated memory is still 131.6 MB. Free memory was 103.1 MB in the beginning and 100.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.85 ms. Allocated memory is still 131.6 MB. Free memory was 100.8 MB in the beginning and 99.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 452.42 ms. Allocated memory is still 131.6 MB. Free memory was 99.6 MB in the beginning and 87.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 308633.62 ms. Allocated memory was 131.6 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 86.8 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...