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-10-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-a9d37a5-m [2019-02-28 10:50:59,227 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-28 10:50:59,230 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-28 10:50:59,242 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-28 10:50:59,242 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-28 10:50:59,244 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-28 10:50:59,245 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-28 10:50:59,247 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-28 10:50:59,248 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-28 10:50:59,249 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-28 10:50:59,250 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-02-28 10:50:59,275 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 [2019-02-28 10:50:59,288 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-28 10:50:59,288 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-28 10:50:59,289 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-28 10:50:59,289 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-28 10:50:59,289 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-28 10:50:59,289 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-28 10:50:59,290 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-28 10:50:59,290 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-28 10:50:59,290 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-28 10:50:59,290 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-02-28 10:50:59,290 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-02-28 10:50:59,291 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-28 10:50:59,291 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-28 10:50:59,291 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-28 10:50:59,292 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-28 10:50:59,292 INFO L133 SettingsManager]: * Use SBE=true [2019-02-28 10:50:59,292 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-28 10:50:59,292 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-28 10:50:59,292 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-28 10:50:59,293 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-28 10:50:59,293 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-28 10:50:59,293 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-28 10:50:59,293 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-28 10:50:59,293 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-28 10:50:59,294 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-28 10:50:59,294 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-28 10:50:59,294 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-28 10:50:59,294 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-28 10:50:59,294 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-28 10:50:59,295 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-28 10:50:59,295 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 10:50:59,295 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-28 10:50:59,295 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-28 10:50:59,295 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-28 10:50:59,296 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-28 10:50:59,296 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-28 10:50:59,296 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in [2019-02-28 10:50:59,296 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-28 10:50:59,296 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-28 10:50:59,327 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-28 10:50:59,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-28 10:50:59,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-28 10:50:59,344 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-28 10:50:59,345 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-28 10:50:59,346 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl [2019-02-28 10:50:59,346 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl' [2019-02-28 10:50:59,404 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-28 10:50:59,406 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-28 10:50:59,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-28 10:50:59,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-28 10:50:59,408 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-28 10:50:59,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:50:59" (1/1) ... [2019-02-28 10:50:59,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:50:59" (1/1) ... [2019-02-28 10:50:59,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-28 10:50:59,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-28 10:50:59,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-28 10:50:59,478 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-28 10:50:59,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:50:59" (1/1) ... [2019-02-28 10:50:59,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:50:59" (1/1) ... [2019-02-28 10:50:59,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:50:59" (1/1) ... [2019-02-28 10:50:59,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:50:59" (1/1) ... [2019-02-28 10:50:59,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:50:59" (1/1) ... [2019-02-28 10:50:59,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:50:59" (1/1) ... [2019-02-28 10:50:59,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:50:59" (1/1) ... [2019-02-28 10:50:59,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-28 10:50:59,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-28 10:50:59,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-28 10:50:59,505 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-28 10:50:59,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:50:59" (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:16092 -smt2 -in -t:200000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 10:50:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-28 10:50:59,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-28 10:51:00,207 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-28 10:51:00,208 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-02-28 10:51:00,209 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:51:00 BoogieIcfgContainer [2019-02-28 10:51:00,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-28 10:51:00,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-28 10:51:00,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-28 10:51:00,214 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-28 10:51:00,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:50:59" (1/2) ... [2019-02-28 10:51:00,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e050c3b and model type speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.02 10:51:00, skipping insertion in model container [2019-02-28 10:51:00,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:51:00" (2/2) ... [2019-02-28 10:51:00,218 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-unlimited.bpl [2019-02-28 10:51:00,227 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-28 10:51:00,235 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-02-28 10:51:00,248 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-02-28 10:51:00,280 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-28 10:51:00,280 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-28 10:51:00,281 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-28 10:51:00,281 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-28 10:51:00,281 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-28 10:51:00,281 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-28 10:51:00,281 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-28 10:51:00,282 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-28 10:51:00,297 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-02-28 10:51:00,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-02-28 10:51:00,304 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:51:00,305 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-02-28 10:51:00,308 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:51:00,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:51:00,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-02-28 10:51:00,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:51:00,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:51:00,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:51:00,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:51:00,363 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:51:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:51:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:51:00,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-28 10:51:00,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-02-28 10:51:00,570 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 10:51:00,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-28 10:51:00,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-28 10:51:00,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 10:51:00,588 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-02-28 10:51:00,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:51:00,838 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-02-28 10:51:00,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-28 10:51:00,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-02-28 10:51:00,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:51:00,854 INFO L225 Difference]: With dead ends: 45 [2019-02-28 10:51:00,854 INFO L226 Difference]: Without dead ends: 40 [2019-02-28 10:51:00,857 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 [2019-02-28 10:51:00,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-02-28 10:51:00,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-02-28 10:51:00,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-02-28 10:51:00,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-02-28 10:51:00,916 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-02-28 10:51:00,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:51:00,918 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-02-28 10:51:00,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-28 10:51:00,918 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-02-28 10:51:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:51:00,919 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:51:00,919 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:51:00,920 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:51:00,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:51:00,920 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-02-28 10:51:00,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:51:00,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:51:00,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:51:00,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:51:00,922 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:51:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:51:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:51:01,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:51:01,244 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:51:01,246 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:51:01,247 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-02-28 10:51:01,302 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 10:51:01,302 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:51:02,412 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:51:02,414 INFO L272 AbstractInterpreter]: Visited 3 different actions 5 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-02-28 10:51:02,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:51:02,425 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:51:02,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:51:02,426 INFO L193 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 [2019-02-28 10:51:02,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:51:02,446 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:51:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:51:02,481 WARN L254 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 19 conjunts are in the unsatisfiable core [2019-02-28 10:51:02,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:51:02,565 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2019-02-28 10:51:02,614 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:02,616 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-02-28 10:51:02,660 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:02,684 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:02,711 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:02,714 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2019-02-28 10:51:02,754 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:02,773 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:02,794 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:02,820 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:02,846 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:02,872 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:02,873 INFO L289 Elim1Store]: Index analysis took 143 ms [2019-02-28 10:51:02,875 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2019-02-28 10:51:02,926 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:02,953 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:02,980 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,002 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,025 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,035 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,037 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,040 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,042 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,067 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,067 INFO L289 Elim1Store]: Index analysis took 169 ms [2019-02-28 10:51:03,070 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 44 [2019-02-28 10:51:03,117 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,141 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,161 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,183 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,208 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,234 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,256 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,281 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,307 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,330 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,347 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,349 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,355 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,357 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,383 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,383 INFO L289 Elim1Store]: Index analysis took 288 ms [2019-02-28 10:51:03,385 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2019-02-28 10:51:03,426 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,444 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,446 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,461 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,463 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,489 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,500 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,502 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,523 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,524 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,526 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,528 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,530 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,532 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,538 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,545 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,547 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,548 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,550 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,552 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,554 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,554 INFO L289 Elim1Store]: Index analysis took 146 ms [2019-02-28 10:51:03,559 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 48 [2019-02-28 10:51:03,584 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,587 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,590 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,594 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,596 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,598 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,603 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,627 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,650 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,674 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,696 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,701 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,703 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,705 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,707 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,708 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,710 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,711 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,713 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,717 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,718 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,726 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,727 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,730 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,731 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,732 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,734 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,735 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,735 INFO L289 Elim1Store]: Index analysis took 159 ms [2019-02-28 10:51:03,738 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 50 [2019-02-28 10:51:03,757 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,759 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,760 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,761 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,764 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,766 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,768 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,769 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,770 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,772 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,774 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,776 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,777 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,780 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,783 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,785 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,788 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,789 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,790 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,791 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,792 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,794 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,796 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,797 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,800 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,802 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,804 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,805 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,806 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,807 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,808 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,810 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,812 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,813 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,816 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,817 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,820 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 52 [2019-02-28 10:51:03,843 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,845 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,847 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,886 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,909 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,932 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,954 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:03,976 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,002 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,025 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,050 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,056 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,059 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,061 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,062 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,065 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,067 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,068 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,070 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,072 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,074 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,076 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,077 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,079 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,081 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,082 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,084 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,085 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,087 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,089 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,090 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,092 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,094 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,095 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,097 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,099 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:51:04,099 INFO L289 Elim1Store]: Index analysis took 261 ms [2019-02-28 10:51:04,295 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 52 treesize of output 78 [2019-02-28 10:51:04,298 INFO L315 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-02-28 10:51:04,375 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:04,481 INFO L315 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:04,738 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:04,816 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:04,844 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:04,877 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:04,908 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:04,945 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:04,979 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:05,268 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2019-02-28 10:51:05,269 INFO L315 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2019-02-28 10:51:05,292 INFO L315 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:05,302 INFO L315 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:05,313 INFO L315 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:05,344 INFO L315 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:05,416 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:05,520 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:05,606 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:05,712 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:51:05,878 INFO L315 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-02-28 10:51:05,879 INFO L209 ElimStorePlain]: Needed 20 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-02-28 10:51:06,019 WARN L181 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2019-02-28 10:51:06,062 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 51 [2019-02-28 10:51:06,064 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:51:06,355 INFO L315 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-02-28 10:51:06,355 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:160 [2019-02-28 10:51:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:51:06,442 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:51:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:51:06,478 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:51:06,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:51:06,478 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:51:06,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:51:06,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:51:06,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:51:06,480 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-02-28 10:51:06,615 WARN L181 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2019-02-28 10:55:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:55:35,767 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2019-02-28 10:55:35,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-28 10:55:35,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-28 10:55:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:55:35,770 INFO L225 Difference]: With dead ends: 79 [2019-02-28 10:55:35,770 INFO L226 Difference]: Without dead ends: 77 [2019-02-28 10:55:35,771 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-02-28 10:55:35,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-02-28 10:55:35,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 26. [2019-02-28 10:55:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-02-28 10:55:35,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 57 transitions. [2019-02-28 10:55:35,779 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 57 transitions. Word has length 3 [2019-02-28 10:55:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:55:35,779 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 57 transitions. [2019-02-28 10:55:35,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-28 10:55:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 57 transitions. [2019-02-28 10:55:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:55:35,780 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:55:35,780 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:55:35,781 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:55:35,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:35,781 INFO L82 PathProgramCache]: Analyzing trace with hash 30888, now seen corresponding path program 1 times [2019-02-28 10:55:35,781 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:55:35,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:35,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:35,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:35,783 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:55:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:35,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:35,886 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:55:35,886 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:55:35,886 INFO L207 CegarAbsIntRunner]: [0], [34], [43] [2019-02-28 10:55:35,889 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 10:55:35,889 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:55:36,348 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:55:36,349 INFO L272 AbstractInterpreter]: Visited 3 different actions 5 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-02-28 10:55:36,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:36,349 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:55:36,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:36,349 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-02-28 10:55:36,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:36,368 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:55:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:36,391 WARN L254 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 19 conjunts are in the unsatisfiable core [2019-02-28 10:55:36,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:55:36,416 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2019-02-28 10:55:36,421 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,422 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-02-28 10:55:36,432 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,434 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,436 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,437 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2019-02-28 10:55:36,447 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,449 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,451 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,453 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,455 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,457 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,459 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2019-02-28 10:55:36,470 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,472 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,474 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,476 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,478 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,480 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,482 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,484 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,486 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,491 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,492 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 44 [2019-02-28 10:55:36,496 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,498 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,499 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,501 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,503 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,505 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,507 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,509 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,511 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,515 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,517 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,518 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,519 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,520 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,521 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,523 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2019-02-28 10:55:36,529 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,531 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,532 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,533 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,534 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,534 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,536 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,537 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,539 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,540 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,542 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,543 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,545 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,547 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,548 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,550 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,551 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,556 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,557 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,558 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,559 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,560 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 48 [2019-02-28 10:55:36,565 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,566 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,568 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,569 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,571 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,572 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,574 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,577 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,578 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,579 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,585 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,586 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,587 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,602 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,604 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,606 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,607 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,609 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,611 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,612 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,614 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,615 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,617 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,618 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,620 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,622 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,623 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,625 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,627 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 50 [2019-02-28 10:55:36,665 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,668 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,672 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,673 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,674 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,675 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,677 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,678 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,680 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,681 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,683 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,684 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,686 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,688 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,689 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,691 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,692 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,694 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,695 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,697 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,699 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,700 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,702 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,703 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,705 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,706 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,708 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,710 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,711 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,712 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,714 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,715 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,717 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,718 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,720 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,721 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,725 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 52 [2019-02-28 10:55:36,742 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,743 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,744 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,745 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,747 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,748 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,750 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,751 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,753 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,754 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,756 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,757 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,759 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,761 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,762 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,764 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,765 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,767 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,768 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,770 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,772 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,773 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,775 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,776 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,778 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,780 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,781 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,783 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,784 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,786 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,787 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,789 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,790 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,792 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,793 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,795 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:36,868 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 52 treesize of output 78 [2019-02-28 10:55:36,871 INFO L315 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:36,932 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:36,960 INFO L315 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:36,985 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,013 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,040 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,067 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,093 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,119 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,144 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,289 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2019-02-28 10:55:37,290 INFO L315 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,302 INFO L315 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,316 INFO L315 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,345 INFO L315 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,397 INFO L315 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,620 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,711 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,805 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:37,904 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:38,055 INFO L315 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:38,055 INFO L209 ElimStorePlain]: Needed 20 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-02-28 10:55:38,215 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 51 [2019-02-28 10:55:38,216 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:38,356 INFO L315 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:38,357 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:160 [2019-02-28 10:55:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:38,383 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:55:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:38,462 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:55:38,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:55:38,462 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:55:38,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:55:38,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:55:38,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:55:38,463 INFO L87 Difference]: Start difference. First operand 26 states and 57 transitions. Second operand 6 states. [2019-02-28 10:56:10,111 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:16092 -smt2 -in -t:200000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:652) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:256) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2019-02-28 10:56:10,115 INFO L168 Benchmark]: Toolchain (without parser) took 310710.98 ms. Allocated memory was 133.7 MB in the beginning and 349.2 MB in the end (delta: 215.5 MB). Free memory was 109.0 MB in the beginning and 167.9 MB in the end (delta: -58.9 MB). Peak memory consumption was 156.6 MB. Max. memory is 7.1 GB. [2019-02-28 10:56:10,117 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 133.7 MB. Free memory is still 109.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-02-28 10:56:10,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.94 ms. Allocated memory is still 133.7 MB. Free memory was 108.6 MB in the beginning and 106.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-02-28 10:56:10,118 INFO L168 Benchmark]: Boogie Preprocessor took 26.98 ms. Allocated memory is still 133.7 MB. Free memory was 106.4 MB in the beginning and 105.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-02-28 10:56:10,119 INFO L168 Benchmark]: RCFGBuilder took 704.85 ms. Allocated memory is still 133.7 MB. Free memory was 104.7 MB in the beginning and 90.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-02-28 10:56:10,119 INFO L168 Benchmark]: TraceAbstraction took 309904.40 ms. Allocated memory was 133.7 MB in the beginning and 349.2 MB in the end (delta: 215.5 MB). Free memory was 90.3 MB in the beginning and 167.9 MB in the end (delta: -77.6 MB). Peak memory consumption was 137.9 MB. Max. memory is 7.1 GB. [2019-02-28 10:56:10,123 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 0.20 ms. Allocated memory is still 133.7 MB. Free memory is still 109.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 68.94 ms. Allocated memory is still 133.7 MB. Free memory was 108.6 MB in the beginning and 106.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.98 ms. Allocated memory is still 133.7 MB. Free memory was 106.4 MB in the beginning and 105.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 704.85 ms. Allocated memory is still 133.7 MB. Free memory was 104.7 MB in the beginning and 90.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 309904.40 ms. Allocated memory was 133.7 MB in the beginning and 349.2 MB in the end (delta: 215.5 MB). Free memory was 90.3 MB in the beginning and 167.9 MB in the end (delta: -77.6 MB). Peak memory consumption was 137.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...