java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-df3cc4e-m [2019-01-11 11:14:00,183 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-11 11:14:00,184 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-11 11:14:00,200 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-11 11:14:00,200 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-11 11:14:00,201 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-11 11:14:00,203 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-11 11:14:00,205 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-11 11:14:00,208 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-11 11:14:00,208 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-11 11:14:00,209 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-11 11:14:00,253 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-11 11:14:00,272 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-11 11:14:00,272 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-11 11:14:00,273 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-11 11:14:00,273 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-11 11:14:00,273 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-11 11:14:00,274 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-11 11:14:00,274 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-11 11:14:00,274 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-11 11:14:00,274 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-11 11:14:00,274 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-11 11:14:00,275 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-11 11:14:00,275 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-11 11:14:00,275 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-11 11:14:00,275 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-11 11:14:00,276 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-11 11:14:00,276 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-11 11:14:00,276 INFO L133 SettingsManager]: * Use SBE=true [2019-01-11 11:14:00,276 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-11 11:14:00,277 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-11 11:14:00,277 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-11 11:14:00,277 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-11 11:14:00,277 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-11 11:14:00,277 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-11 11:14:00,278 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-11 11:14:00,278 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-11 11:14:00,278 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-11 11:14:00,278 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-11 11:14:00,278 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-11 11:14:00,279 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-11 11:14:00,279 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-11 11:14:00,279 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-11 11:14:00,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-11 11:14:00,279 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-11 11:14:00,280 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-11 11:14:00,280 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-11 11:14:00,280 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-11 11:14:00,280 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-11 11:14:00,280 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in [2019-01-11 11:14:00,280 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-11 11:14:00,281 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-11 11:14:00,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-11 11:14:00,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-11 11:14:00,326 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-11 11:14:00,327 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-11 11:14:00,327 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-11 11:14:00,328 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-limited.bpl [2019-01-11 11:14:00,328 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-limited.bpl' [2019-01-11 11:14:00,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-11 11:14:00,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-11 11:14:00,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-11 11:14:00,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-11 11:14:00,365 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-11 11:14:00,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:14:00" (1/1) ... [2019-01-11 11:14:00,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:14:00" (1/1) ... [2019-01-11 11:14:00,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-11 11:14:00,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-11 11:14:00,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-11 11:14:00,421 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-11 11:14:00,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:14:00" (1/1) ... [2019-01-11 11:14:00,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:14:00" (1/1) ... [2019-01-11 11:14:00,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:14:00" (1/1) ... [2019-01-11 11:14:00,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:14:00" (1/1) ... [2019-01-11 11:14:00,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:14:00" (1/1) ... [2019-01-11 11:14:00,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:14:00" (1/1) ... [2019-01-11 11:14:00,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:14:00" (1/1) ... [2019-01-11 11:14:00,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-11 11:14:00,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-11 11:14:00,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-11 11:14:00,448 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-11 11:14:00,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:14:00" (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:8192 -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:8192 -smt2 -in -t:2000 [2019-01-11 11:14:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-11 11:14:00,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-11 11:14:01,015 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-11 11:14:01,016 INFO L286 CfgBuilder]: Removed 21 assue(true) statements. [2019-01-11 11:14:01,017 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 11:14:01 BoogieIcfgContainer [2019-01-11 11:14:01,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-11 11:14:01,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-11 11:14:01,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-11 11:14:01,022 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-11 11:14:01,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:14:00" (1/2) ... [2019-01-11 11:14:01,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d738dd and model type speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 11:14:01, skipping insertion in model container [2019-01-11 11:14:01,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 11:14:01" (2/2) ... [2019-01-11 11:14:01,025 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-9-limited.bpl [2019-01-11 11:14:01,035 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-11 11:14:01,043 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-01-11 11:14:01,060 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-01-11 11:14:01,090 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-11 11:14:01,090 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-11 11:14:01,090 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-11 11:14:01,090 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-11 11:14:01,090 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-11 11:14:01,091 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-11 11:14:01,091 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-11 11:14:01,091 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-11 11:14:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-01-11 11:14:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-11 11:14:01,113 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:14:01,114 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-11 11:14:01,117 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:14:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:14:01,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2019-01-11 11:14:01,126 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:14:01,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:14:01,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:14:01,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:14:01,171 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:14:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:14:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:14:01,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-11 11:14:01,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-11 11:14:01,333 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-11 11:14:01,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-11 11:14:01,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-11 11:14:01,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-11 11:14:01,352 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-01-11 11:14:01,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:14:01,586 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2019-01-11 11:14:01,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-11 11:14:01,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-11 11:14:01,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:14:01,604 INFO L225 Difference]: With dead ends: 41 [2019-01-11 11:14:01,604 INFO L226 Difference]: Without dead ends: 36 [2019-01-11 11:14:01,607 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 [2019-01-11 11:14:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-11 11:14:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2019-01-11 11:14:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-11 11:14:01,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 37 transitions. [2019-01-11 11:14:01,647 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 37 transitions. Word has length 2 [2019-01-11 11:14:01,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:14:01,648 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 37 transitions. [2019-01-11 11:14:01,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-11 11:14:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 37 transitions. [2019-01-11 11:14:01,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:14:01,649 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:14:01,650 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:14:01,650 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:14:01,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:14:01,651 INFO L82 PathProgramCache]: Analyzing trace with hash 30388, now seen corresponding path program 1 times [2019-01-11 11:14:01,651 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:14:01,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:14:01,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:14:01,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:14:01,653 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:14:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:14:02,082 WARN L181 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2019-01-11 11:14:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:14:02,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:14:02,163 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:14:02,164 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 11:14:02,166 INFO L207 CegarAbsIntRunner]: [0], [18], [39] [2019-01-11 11:14:02,222 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 11:14:02,222 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 11:14:02,309 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 11:14:02,310 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 110 root evaluator evaluations with a maximum evaluation depth of 3. Performed 110 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 11:14:02,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:14:02,316 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 11:14:02,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:14:02,316 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 [2019-01-11 11:14:02,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:14:02,329 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 11:14:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:14:02,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:14:03,058 WARN L181 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-01-11 11:14:03,091 INFO L478 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 30 treesize of output 33 [2019-01-11 11:14:03,128 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,132 INFO L478 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 33 treesize of output 39 [2019-01-11 11:14:03,167 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,168 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,170 INFO L478 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 35 treesize of output 49 [2019-01-11 11:14:03,216 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,240 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,258 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,260 INFO L478 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 37 treesize of output 63 [2019-01-11 11:14:03,282 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,284 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,286 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,293 INFO L478 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 39 treesize of output 81 [2019-01-11 11:14:03,311 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,315 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,320 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,329 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,331 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,334 INFO L478 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 41 treesize of output 103 [2019-01-11 11:14:03,350 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,354 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,356 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,358 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,361 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,363 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,366 INFO L478 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 43 treesize of output 129 [2019-01-11 11:14:03,391 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,393 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,394 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,396 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,399 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,403 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,405 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,408 INFO L478 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 45 treesize of output 159 [2019-01-11 11:14:03,449 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,532 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,556 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,573 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,574 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,577 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,581 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,582 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:03,583 INFO L303 Elim1Store]: Index analysis took 166 ms [2019-01-11 11:14:03,586 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 190 [2019-01-11 11:14:03,589 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-11 11:14:04,160 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:04,263 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:04,371 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:04,479 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:04,560 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:04,597 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:04,628 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:04,657 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:04,775 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:04,777 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:04,781 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 95 [2019-01-11 11:14:04,811 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2019-01-11 11:14:04,820 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:04,822 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:04,824 INFO L478 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 73 treesize of output 78 [2019-01-11 11:14:04,902 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:04,924 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:04,937 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:04,958 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:04,982 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,006 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,011 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,012 INFO L303 Elim1Store]: Index analysis took 152 ms [2019-01-11 11:14:05,014 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 107 [2019-01-11 11:14:05,119 WARN L181 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-01-11 11:14:05,130 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,131 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,132 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,134 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,136 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,137 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,140 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,144 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,146 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 116 [2019-01-11 11:14:05,293 WARN L181 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-01-11 11:14:05,312 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,313 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,313 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,314 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,315 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,317 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,318 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,320 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,321 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,322 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,326 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 134 [2019-01-11 11:14:05,548 WARN L181 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-11 11:14:05,581 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,607 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,634 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,658 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,683 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,708 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,726 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,742 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,744 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,746 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,748 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,750 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,750 INFO L303 Elim1Store]: Index analysis took 197 ms [2019-01-11 11:14:05,752 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-11 11:14:05,754 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-11 11:14:05,775 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:05,777 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:05,779 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:05,782 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:05,786 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:05,791 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:14:05,870 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-11 11:14:05,870 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:149, output treesize:70 [2019-01-11 11:14:05,948 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,949 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,950 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,951 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,952 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,953 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,956 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,957 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,959 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,960 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,962 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,964 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,966 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,968 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,970 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,971 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,973 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,974 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,975 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,976 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,978 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,979 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,980 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,981 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,982 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,984 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,985 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,986 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,988 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,989 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,991 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,992 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,993 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,995 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,996 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,998 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:05,999 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:06,002 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 190 [2019-01-11 11:14:06,004 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:14:06,247 INFO L267 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. [2019-01-11 11:14:06,247 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:80, output treesize:70 [2019-01-11 11:14:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:14:09,153 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:14:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:14:09,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 11:14:09,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-11 11:14:09,289 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 11:14:09,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 11:14:09,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 11:14:09,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-11 11:14:09,291 INFO L87 Difference]: Start difference. First operand 20 states and 37 transitions. Second operand 6 states. [2019-01-11 11:14:59,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:14:59,213 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2019-01-11 11:14:59,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-11 11:14:59,213 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-11 11:14:59,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:14:59,216 INFO L225 Difference]: With dead ends: 71 [2019-01-11 11:14:59,216 INFO L226 Difference]: Without dead ends: 69 [2019-01-11 11:14:59,218 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=31, Invalid=40, Unknown=1, NotChecked=0, Total=72 [2019-01-11 11:14:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-01-11 11:14:59,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 24. [2019-01-11 11:14:59,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-01-11 11:14:59,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2019-01-11 11:14:59,225 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 3 [2019-01-11 11:14:59,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:14:59,225 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2019-01-11 11:14:59,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-11 11:14:59,225 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2019-01-11 11:14:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:14:59,226 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:14:59,226 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:14:59,227 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:14:59,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:14:59,227 INFO L82 PathProgramCache]: Analyzing trace with hash 30884, now seen corresponding path program 1 times [2019-01-11 11:14:59,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:14:59,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:14:59,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:14:59,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:14:59,228 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:14:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:14:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:14:59,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:14:59,345 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:14:59,345 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 11:14:59,346 INFO L207 CegarAbsIntRunner]: [0], [34], [39] [2019-01-11 11:14:59,348 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 11:14:59,348 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 11:14:59,360 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 11:14:59,361 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 110 root evaluator evaluations with a maximum evaluation depth of 3. Performed 110 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 11:14:59,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:14:59,361 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 11:14:59,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:14:59,361 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 [2019-01-11 11:14:59,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:14:59,372 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 11:14:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:14:59,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:14:59,511 WARN L181 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-01-11 11:14:59,517 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,519 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,521 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 95 [2019-01-11 11:14:59,535 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2019-01-11 11:14:59,553 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,555 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,556 INFO L478 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 73 treesize of output 78 [2019-01-11 11:14:59,586 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,588 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,588 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,590 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,591 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,593 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,595 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,597 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 107 [2019-01-11 11:14:59,703 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,704 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,705 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,707 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,708 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,710 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,711 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,713 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,715 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 116 [2019-01-11 11:14:59,836 WARN L181 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-01-11 11:14:59,877 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,878 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,879 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,880 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,882 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,883 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,885 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,886 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,888 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,889 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:14:59,891 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 134 [2019-01-11 11:15:00,029 WARN L181 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-11 11:15:00,061 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,063 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,064 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,064 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,065 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,066 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,068 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,069 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,071 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,072 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,074 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,075 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,077 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-11 11:15:00,079 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-01-11 11:15:00,085 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:00,087 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:00,105 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:00,107 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:00,108 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:00,110 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:00,138 INFO L478 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 30 treesize of output 33 [2019-01-11 11:15:00,141 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,142 INFO L478 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 33 treesize of output 39 [2019-01-11 11:15:00,150 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,153 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,154 INFO L478 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 35 treesize of output 49 [2019-01-11 11:15:00,179 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,180 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,181 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,183 INFO L478 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 37 treesize of output 63 [2019-01-11 11:15:00,190 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,191 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,194 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,198 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,199 INFO L478 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 39 treesize of output 81 [2019-01-11 11:15:00,207 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,209 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,210 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,212 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,214 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,216 INFO L478 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 41 treesize of output 103 [2019-01-11 11:15:00,226 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,227 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,229 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,230 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,232 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,233 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,235 INFO L478 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 43 treesize of output 129 [2019-01-11 11:15:00,277 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,299 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,311 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,335 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,356 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,379 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,404 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,404 INFO L303 Elim1Store]: Index analysis took 165 ms [2019-01-11 11:15:00,406 INFO L478 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 45 treesize of output 159 [2019-01-11 11:15:00,436 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,462 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,487 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,513 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,538 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,567 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,589 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,614 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:00,615 INFO L303 Elim1Store]: Index analysis took 204 ms [2019-01-11 11:15:00,616 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 190 [2019-01-11 11:15:00,618 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-11 11:15:00,932 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:00,995 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:01,047 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:01,086 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:01,116 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:01,143 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:01,166 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:01,185 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:01,246 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-11 11:15:01,247 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:149, output treesize:70 [2019-01-11 11:15:01,338 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,342 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,343 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,344 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,346 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,348 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,350 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,352 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,355 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,357 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,358 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,360 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,362 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,363 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,365 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,367 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,369 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,371 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,372 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,374 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,375 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,377 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,378 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,380 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,381 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,383 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,384 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,386 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,388 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,389 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,391 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,392 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,394 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,395 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,397 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,398 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,400 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:01,400 INFO L303 Elim1Store]: Index analysis took 101 ms [2019-01-11 11:15:01,403 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 196 [2019-01-11 11:15:01,406 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:15:01,588 INFO L267 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. [2019-01-11 11:15:01,589 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:80, output treesize:70 [2019-01-11 11:15:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:15:04,457 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:15:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:15:04,494 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 11:15:04,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-11 11:15:04,495 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 11:15:04,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 11:15:04,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 11:15:04,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-11 11:15:04,496 INFO L87 Difference]: Start difference. First operand 24 states and 52 transitions. Second operand 6 states. [2019-01-11 11:15:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:15:53,124 INFO L93 Difference]: Finished difference Result 71 states and 113 transitions. [2019-01-11 11:15:53,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-11 11:15:53,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-11 11:15:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:15:53,126 INFO L225 Difference]: With dead ends: 71 [2019-01-11 11:15:53,126 INFO L226 Difference]: Without dead ends: 69 [2019-01-11 11:15:53,127 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=31, Invalid=40, Unknown=1, NotChecked=0, Total=72 [2019-01-11 11:15:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-01-11 11:15:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 29. [2019-01-11 11:15:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-11 11:15:53,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 69 transitions. [2019-01-11 11:15:53,134 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 69 transitions. Word has length 3 [2019-01-11 11:15:53,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:15:53,135 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 69 transitions. [2019-01-11 11:15:53,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-11 11:15:53,135 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 69 transitions. [2019-01-11 11:15:53,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:15:53,136 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:15:53,136 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:15:53,136 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:15:53,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:15:53,136 INFO L82 PathProgramCache]: Analyzing trace with hash 30946, now seen corresponding path program 1 times [2019-01-11 11:15:53,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:15:53,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:15:53,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:15:53,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:15:53,138 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:15:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:15:53,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:15:53,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:15:53,241 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:15:53,242 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 11:15:53,242 INFO L207 CegarAbsIntRunner]: [0], [36], [39] [2019-01-11 11:15:53,246 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 11:15:53,246 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 11:15:53,256 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 11:15:53,257 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 110 root evaluator evaluations with a maximum evaluation depth of 3. Performed 110 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 11:15:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:15:53,257 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 11:15:53,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:15:53,257 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-11 11:15:53,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:15:53,269 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 11:15:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:15:53,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:15:53,472 WARN L181 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-01-11 11:15:53,477 INFO L478 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 30 treesize of output 33 [2019-01-11 11:15:53,482 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,483 INFO L478 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 33 treesize of output 39 [2019-01-11 11:15:53,491 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,495 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,496 INFO L478 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 35 treesize of output 49 [2019-01-11 11:15:53,503 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,504 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,506 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,507 INFO L478 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 37 treesize of output 63 [2019-01-11 11:15:53,514 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,516 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,519 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,522 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,523 INFO L478 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 39 treesize of output 81 [2019-01-11 11:15:53,531 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,533 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,535 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,537 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,540 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,541 INFO L478 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 41 treesize of output 103 [2019-01-11 11:15:53,549 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,552 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,554 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,557 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,559 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,561 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,562 INFO L478 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 43 treesize of output 129 [2019-01-11 11:15:53,569 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,570 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,572 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,573 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,575 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,576 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,581 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,582 INFO L478 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 45 treesize of output 159 [2019-01-11 11:15:53,625 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,631 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,632 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,633 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,635 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,637 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,638 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,640 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:53,642 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 190 [2019-01-11 11:15:53,645 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-11 11:15:53,890 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:53,960 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:54,015 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:54,066 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:54,107 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:54,141 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:54,172 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:54,245 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:54,349 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,350 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,351 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 83 [2019-01-11 11:15:54,357 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 65 [2019-01-11 11:15:54,384 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,385 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,386 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,387 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,388 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,390 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 86 [2019-01-11 11:15:54,457 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,458 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,474 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,482 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,483 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,484 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,486 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 91 [2019-01-11 11:15:54,591 WARN L181 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2019-01-11 11:15:54,596 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,597 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,598 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,600 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,601 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,603 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,604 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,605 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,607 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 105 [2019-01-11 11:15:54,778 WARN L181 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-01-11 11:15:54,783 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,784 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,785 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,786 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,788 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,789 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,790 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,792 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,793 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,794 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,796 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 85 [2019-01-11 11:15:54,797 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-01-11 11:15:54,815 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:54,831 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:54,846 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:54,848 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:54,850 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:54,899 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-11 11:15:54,900 INFO L202 ElimStorePlain]: Needed 16 recursive calls to eliminate 9 variables, input treesize:137, output treesize:70 [2019-01-11 11:15:54,938 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,939 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,940 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,940 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,941 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,943 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,944 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,945 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,947 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,948 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,949 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,951 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,952 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,953 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,955 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,956 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,957 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,958 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,960 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,961 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,962 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,964 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,965 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,966 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,968 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,969 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,970 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,971 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,973 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,974 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,975 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,977 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,978 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,979 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,981 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,982 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,983 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:54,985 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 196 [2019-01-11 11:15:54,987 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:15:55,150 INFO L267 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. [2019-01-11 11:15:55,151 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:80, output treesize:70 [2019-01-11 11:15:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:15:58,192 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:15:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:15:58,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-01-11 11:15:58,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 6 [2019-01-11 11:15:58,224 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-11 11:15:58,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-11 11:15:58,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-11 11:15:58,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=29, Unknown=1, NotChecked=0, Total=56 [2019-01-11 11:15:58,225 INFO L87 Difference]: Start difference. First operand 29 states and 69 transitions. Second operand 4 states. [2019-01-11 11:15:58,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:15:58,306 INFO L93 Difference]: Finished difference Result 31 states and 80 transitions. [2019-01-11 11:15:58,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-11 11:15:58,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-01-11 11:15:58,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:15:58,308 INFO L225 Difference]: With dead ends: 31 [2019-01-11 11:15:58,308 INFO L226 Difference]: Without dead ends: 30 [2019-01-11 11:15:58,308 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=26, Invalid=29, Unknown=1, NotChecked=0, Total=56 [2019-01-11 11:15:58,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-01-11 11:15:58,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-01-11 11:15:58,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-01-11 11:15:58,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 79 transitions. [2019-01-11 11:15:58,314 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 79 transitions. Word has length 3 [2019-01-11 11:15:58,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:15:58,314 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 79 transitions. [2019-01-11 11:15:58,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-11 11:15:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 79 transitions. [2019-01-11 11:15:58,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:15:58,315 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:15:58,315 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:15:58,316 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:15:58,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:15:58,316 INFO L82 PathProgramCache]: Analyzing trace with hash 31072, now seen corresponding path program 1 times [2019-01-11 11:15:58,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:15:58,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:15:58,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:15:58,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:15:58,317 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:15:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:15:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:15:58,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-11 11:15:58,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-11 11:15:58,354 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-11 11:15:58,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-11 11:15:58,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-11 11:15:58,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-11 11:15:58,355 INFO L87 Difference]: Start difference. First operand 30 states and 79 transitions. Second operand 3 states. [2019-01-11 11:15:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:15:58,426 INFO L93 Difference]: Finished difference Result 37 states and 80 transitions. [2019-01-11 11:15:58,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-11 11:15:58,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-01-11 11:15:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:15:58,428 INFO L225 Difference]: With dead ends: 37 [2019-01-11 11:15:58,428 INFO L226 Difference]: Without dead ends: 36 [2019-01-11 11:15:58,429 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 [2019-01-11 11:15:58,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-11 11:15:58,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-01-11 11:15:58,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-01-11 11:15:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 78 transitions. [2019-01-11 11:15:58,435 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 78 transitions. Word has length 3 [2019-01-11 11:15:58,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:15:58,435 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 78 transitions. [2019-01-11 11:15:58,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-11 11:15:58,436 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 78 transitions. [2019-01-11 11:15:58,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:15:58,436 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:15:58,436 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:15:58,436 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:15:58,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:15:58,437 INFO L82 PathProgramCache]: Analyzing trace with hash 30140, now seen corresponding path program 1 times [2019-01-11 11:15:58,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:15:58,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:15:58,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:15:58,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:15:58,438 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:15:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:15:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:15:58,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:15:58,510 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:15:58,510 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 11:15:58,510 INFO L207 CegarAbsIntRunner]: [0], [10], [39] [2019-01-11 11:15:58,511 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 11:15:58,512 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 11:15:58,525 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 11:15:58,525 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 110 root evaluator evaluations with a maximum evaluation depth of 3. Performed 110 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 11:15:58,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:15:58,526 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 11:15:58,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:15:58,526 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-11 11:15:58,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:15:58,536 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 11:15:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:15:58,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:15:58,740 WARN L181 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-01-11 11:15:58,745 INFO L478 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 30 treesize of output 33 [2019-01-11 11:15:58,751 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,752 INFO L478 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 33 treesize of output 39 [2019-01-11 11:15:58,758 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,760 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,761 INFO L478 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 35 treesize of output 49 [2019-01-11 11:15:58,769 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,771 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,773 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,775 INFO L478 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 37 treesize of output 63 [2019-01-11 11:15:58,781 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,783 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,785 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,788 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,789 INFO L478 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 39 treesize of output 81 [2019-01-11 11:15:58,797 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,799 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,801 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,803 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,807 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,808 INFO L478 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 41 treesize of output 103 [2019-01-11 11:15:58,816 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,818 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,820 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,822 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,824 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,827 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,828 INFO L478 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 43 treesize of output 129 [2019-01-11 11:15:58,836 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,838 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,846 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,848 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,849 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,852 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,854 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,856 INFO L478 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 45 treesize of output 159 [2019-01-11 11:15:58,866 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,867 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,868 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,870 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,872 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,874 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,876 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,878 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:58,881 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 190 [2019-01-11 11:15:58,883 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-11 11:15:59,006 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:59,086 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:59,146 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:59,197 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:59,242 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:59,294 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:59,332 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:59,372 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:15:59,484 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,486 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,487 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 106 [2019-01-11 11:15:59,493 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 85 [2019-01-11 11:15:59,520 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,522 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,523 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,531 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,532 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,533 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 103 [2019-01-11 11:15:59,632 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,634 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,635 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,637 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,638 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,639 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,641 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 105 [2019-01-11 11:15:59,726 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,727 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,729 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,730 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,732 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,733 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,734 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,736 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,737 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 116 [2019-01-11 11:15:59,841 WARN L181 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-01-11 11:15:59,846 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,847 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,848 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,849 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,850 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,851 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,853 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,854 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,856 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,857 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,859 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 134 [2019-01-11 11:15:59,987 WARN L181 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-11 11:15:59,992 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,993 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,994 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,996 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,997 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:15:59,998 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,000 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,001 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,002 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,004 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,005 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,006 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,008 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-11 11:16:00,009 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-11 11:16:00,012 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:16:00,014 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:16:00,017 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:16:00,019 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:16:00,022 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:16:00,025 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:16:00,066 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-11 11:16:00,066 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:163, output treesize:70 [2019-01-11 11:16:00,103 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,104 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,105 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,106 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,106 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,108 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,109 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,110 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,111 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,113 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,114 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,115 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,116 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,118 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,119 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,120 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,121 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,123 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,124 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,125 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,127 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,128 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,129 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,130 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,132 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,133 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,134 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,135 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,137 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,138 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,139 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,141 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,142 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,143 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,144 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,146 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,147 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:16:00,149 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 196 [2019-01-11 11:16:00,150 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:16:00,312 INFO L267 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. [2019-01-11 11:16:00,312 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:80, output treesize:70 [2019-01-11 11:16:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:16:03,289 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:16:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:16:03,319 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 11:16:03,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-11 11:16:03,319 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 11:16:03,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 11:16:03,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 11:16:03,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-11 11:16:03,320 INFO L87 Difference]: Start difference. First operand 30 states and 78 transitions. Second operand 6 states. [2019-01-11 11:16:17,752 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:8192 -smt2 -in -t:2000) 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 [2019-01-11 11:16:17,756 INFO L168 Benchmark]: Toolchain (without parser) took 137393.46 ms. Allocated memory was 134.7 MB in the beginning and 340.3 MB in the end (delta: 205.5 MB). Free memory was 109.5 MB in the beginning and 141.6 MB in the end (delta: -32.1 MB). Peak memory consumption was 173.4 MB. Max. memory is 7.1 GB. [2019-01-11 11:16:17,757 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 134.7 MB. Free memory is still 110.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-11 11:16:17,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.09 ms. Allocated memory is still 134.7 MB. Free memory was 109.5 MB in the beginning and 107.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-01-11 11:16:17,758 INFO L168 Benchmark]: Boogie Preprocessor took 26.97 ms. Allocated memory is still 134.7 MB. Free memory was 107.0 MB in the beginning and 106.1 MB in the end (delta: 900.2 kB). Peak memory consumption was 900.2 kB. Max. memory is 7.1 GB. [2019-01-11 11:16:17,758 INFO L168 Benchmark]: RCFGBuilder took 569.35 ms. Allocated memory is still 134.7 MB. Free memory was 105.6 MB in the beginning and 92.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2019-01-11 11:16:17,759 INFO L168 Benchmark]: TraceAbstraction took 136737.09 ms. Allocated memory was 134.7 MB in the beginning and 340.3 MB in the end (delta: 205.5 MB). Free memory was 92.2 MB in the beginning and 141.6 MB in the end (delta: -49.4 MB). Peak memory consumption was 156.1 MB. Max. memory is 7.1 GB. [2019-01-11 11:16:17,771 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 0.13 ms. Allocated memory is still 134.7 MB. Free memory is still 110.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.09 ms. Allocated memory is still 134.7 MB. Free memory was 109.5 MB in the beginning and 107.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.97 ms. Allocated memory is still 134.7 MB. Free memory was 107.0 MB in the beginning and 106.1 MB in the end (delta: 900.2 kB). Peak memory consumption was 900.2 kB. Max. memory is 7.1 GB. * RCFGBuilder took 569.35 ms. Allocated memory is still 134.7 MB. Free memory was 105.6 MB in the beginning and 92.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 136737.09 ms. Allocated memory was 134.7 MB in the beginning and 340.3 MB in the end (delta: 205.5 MB). Free memory was 92.2 MB in the beginning and 141.6 MB in the end (delta: -49.4 MB). Peak memory consumption was 156.1 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:8192 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000) 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...