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-10-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-df3cc4e-m [2019-01-11 11:08:00,358 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-11 11:08:00,360 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-11 11:08:00,377 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-11 11:08:00,377 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-11 11:08:00,380 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-11 11:08:00,383 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-11 11:08:00,385 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-11 11:08:00,388 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-11 11:08:00,390 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-11 11:08:00,391 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-11 11:08:00,423 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 11:08:00,447 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-11 11:08:00,448 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-11 11:08:00,449 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-11 11:08:00,449 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-11 11:08:00,450 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-11 11:08:00,452 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-11 11:08:00,452 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-11 11:08:00,453 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-11 11:08:00,453 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-11 11:08:00,453 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-11 11:08:00,453 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-11 11:08:00,453 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-11 11:08:00,454 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-11 11:08:00,454 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-11 11:08:00,455 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-11 11:08:00,455 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-11 11:08:00,455 INFO L133 SettingsManager]: * Use SBE=true [2019-01-11 11:08:00,455 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-11 11:08:00,455 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-11 11:08:00,456 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-11 11:08:00,456 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-11 11:08:00,456 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-11 11:08:00,456 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-11 11:08:00,456 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-11 11:08:00,456 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-11 11:08:00,457 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-11 11:08:00,457 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-11 11:08:00,457 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-11 11:08:00,457 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-11 11:08:00,457 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-11 11:08:00,458 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-11 11:08:00,458 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-11 11:08:00,458 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-11 11:08:00,458 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-11 11:08:00,458 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-11 11:08:00,459 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-11 11:08:00,459 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-11 11:08:00,459 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in [2019-01-11 11:08:00,459 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-11 11:08:00,459 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-11 11:08:00,499 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-11 11:08:00,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-11 11:08:00,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-11 11:08:00,515 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-11 11:08:00,516 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-11 11:08:00,517 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl [2019-01-11 11:08:00,517 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl' [2019-01-11 11:08:00,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-11 11:08:00,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-11 11:08:00,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-11 11:08:00,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-11 11:08:00,562 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-11 11:08:00,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:08:00" (1/1) ... [2019-01-11 11:08:00,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:08:00" (1/1) ... [2019-01-11 11:08:00,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-11 11:08:00,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-11 11:08:00,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-11 11:08:00,629 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-11 11:08:00,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:08:00" (1/1) ... [2019-01-11 11:08:00,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:08:00" (1/1) ... [2019-01-11 11:08:00,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:08:00" (1/1) ... [2019-01-11 11:08:00,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:08:00" (1/1) ... [2019-01-11 11:08:00,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:08:00" (1/1) ... [2019-01-11 11:08:00,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:08:00" (1/1) ... [2019-01-11 11:08:00,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:08:00" (1/1) ... [2019-01-11 11:08:00,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-11 11:08:00,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-11 11:08:00,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-11 11:08:00,667 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-11 11:08:00,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:08:00" (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 11:08:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-11 11:08:00,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-11 11:08:01,219 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-11 11:08:01,220 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-01-11 11:08:01,221 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 11:08:01 BoogieIcfgContainer [2019-01-11 11:08:01,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-11 11:08:01,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-11 11:08:01,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-11 11:08:01,224 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-11 11:08:01,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:08:00" (1/2) ... [2019-01-11 11:08:01,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32566cb3 and model type speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 11:08:01, skipping insertion in model container [2019-01-11 11:08:01,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 11:08:01" (2/2) ... [2019-01-11 11:08:01,228 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-unlimited.bpl [2019-01-11 11:08:01,237 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-11 11:08:01,244 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-01-11 11:08:01,256 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-01-11 11:08:01,285 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-11 11:08:01,286 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-11 11:08:01,286 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-11 11:08:01,286 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-11 11:08:01,286 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-11 11:08:01,286 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-11 11:08:01,287 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-11 11:08:01,287 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-11 11:08:01,301 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-01-11 11:08:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-11 11:08:01,308 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:08:01,309 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-11 11:08:01,311 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:08:01,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:08:01,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-01-11 11:08:01,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:08:01,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:08:01,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:08:01,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:08:01,363 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:08:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:08:01,553 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 11:08:01,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-11 11:08:01,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-11 11:08:01,555 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-11 11:08:01,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-11 11:08:01,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-11 11:08:01,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-11 11:08:01,571 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-01-11 11:08:01,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:08:01,811 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-01-11 11:08:01,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-11 11:08:01,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-11 11:08:01,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:08:01,843 INFO L225 Difference]: With dead ends: 45 [2019-01-11 11:08:01,843 INFO L226 Difference]: Without dead ends: 40 [2019-01-11 11:08:01,846 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 11:08:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-01-11 11:08:01,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-01-11 11:08:01,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-11 11:08:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-01-11 11:08:01,880 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-01-11 11:08:01,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:08:01,881 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-01-11 11:08:01,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-11 11:08:01,881 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-01-11 11:08:01,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:08:01,882 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:08:01,882 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:08:01,883 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:08:01,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:08:01,883 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-01-11 11:08:01,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:08:01,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:08:01,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:08:01,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:08:01,885 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:08:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:08:02,035 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 11:08:02,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:08:02,035 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:08:02,036 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 11:08:02,039 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-01-11 11:08:02,082 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 11:08:02,083 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 11:08:02,186 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 11:08:02,187 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 104 root evaluator evaluations with a maximum evaluation depth of 2. Performed 104 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 11:08:02,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:08:02,195 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 11:08:02,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:08:02,195 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 11:08:02,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:08:02,210 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 11:08:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:08:02,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:08:02,466 WARN L181 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-01-11 11:08:02,503 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 36 [2019-01-11 11:08:02,525 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 36 treesize of output 42 [2019-01-11 11:08:02,568 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,590 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,593 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 38 treesize of output 52 [2019-01-11 11:08:02,640 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,642 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,644 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,646 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 40 treesize of output 66 [2019-01-11 11:08:02,679 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,682 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,703 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,716 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,719 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 42 treesize of output 84 [2019-01-11 11:08:02,746 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,753 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,754 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,756 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,782 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,786 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 44 treesize of output 106 [2019-01-11 11:08:02,839 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,863 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,886 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,910 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,912 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,914 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,914 INFO L303 Elim1Store]: Index analysis took 120 ms [2019-01-11 11:08:02,918 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 46 treesize of output 132 [2019-01-11 11:08:02,964 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:02,981 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,003 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,029 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,034 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,036 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,039 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,039 INFO L303 Elim1Store]: Index analysis took 113 ms [2019-01-11 11:08:03,042 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 48 treesize of output 162 [2019-01-11 11:08:03,066 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,068 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,071 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,073 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,074 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,075 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,076 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,081 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:03,084 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 196 [2019-01-11 11:08:03,185 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 195 [2019-01-11 11:08:03,270 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-11 11:08:03,878 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:04,077 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:04,258 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:04,402 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:04,457 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:04,500 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:04,533 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:04,562 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:04,592 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:04,674 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:04,678 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 146 treesize of output 140 [2019-01-11 11:08:04,777 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:04,778 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:04,781 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 127 [2019-01-11 11:08:04,903 WARN L181 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-01-11 11:08:04,950 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:04,974 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:04,997 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,018 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,019 INFO L303 Elim1Store]: Index analysis took 113 ms [2019-01-11 11:08:05,020 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 123 [2019-01-11 11:08:05,158 WARN L181 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-01-11 11:08:05,175 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,176 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,177 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,178 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,179 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,181 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,183 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 88 treesize of output 122 [2019-01-11 11:08:05,529 WARN L181 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-01-11 11:08:05,567 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,589 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,614 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,641 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,658 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,661 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,663 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,666 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,666 INFO L303 Elim1Store]: Index analysis took 134 ms [2019-01-11 11:08:05,668 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 73 treesize of output 130 [2019-01-11 11:08:05,790 WARN L181 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-01-11 11:08:05,798 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,798 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,800 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,801 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,802 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,803 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,805 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,806 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,807 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,809 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,811 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 61 treesize of output 145 [2019-01-11 11:08:05,969 WARN L181 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-01-11 11:08:05,978 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,979 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,980 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,981 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,983 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,984 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,985 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,986 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,988 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,989 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,990 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,992 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:05,994 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 167 [2019-01-11 11:08:06,208 WARN L181 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-01-11 11:08:06,261 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,276 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,277 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,278 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,279 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,280 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,282 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,283 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,286 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,287 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,288 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,288 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,289 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:06,294 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 46 treesize of output 145 [2019-01-11 11:08:06,296 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-11 11:08:06,385 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:06,470 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:06,555 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:06,641 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:06,729 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:06,820 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:06,907 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:07,073 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-11 11:08:07,074 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-01-11 11:08:07,276 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:07,278 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 11:08:07,279 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:08:07,743 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 11:08:07,744 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-01-11 11:08:07,771 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 11:08:07,771 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:08:07,809 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 11:08:07,829 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 11:08:07,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-11 11:08:07,829 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 11:08:07,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 11:08:07,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 11:08:07,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-11 11:08:07,831 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-01-11 11:08:57,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:08:57,951 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2019-01-11 11:08:57,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-11 11:08:57,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-11 11:08:57,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:08:57,954 INFO L225 Difference]: With dead ends: 79 [2019-01-11 11:08:57,954 INFO L226 Difference]: Without dead ends: 77 [2019-01-11 11:08:57,955 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-01-11 11:08:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-01-11 11:08:57,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 26. [2019-01-11 11:08:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-11 11:08:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 57 transitions. [2019-01-11 11:08:57,962 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 57 transitions. Word has length 3 [2019-01-11 11:08:57,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:08:57,963 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 57 transitions. [2019-01-11 11:08:57,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-11 11:08:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 57 transitions. [2019-01-11 11:08:57,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:08:57,963 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:08:57,964 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:08:57,964 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:08:57,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:08:57,964 INFO L82 PathProgramCache]: Analyzing trace with hash 30888, now seen corresponding path program 1 times [2019-01-11 11:08:57,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:08:57,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:08:57,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:08:57,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:08:57,966 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:08:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:08:58,065 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 11:08:58,065 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:08:58,066 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:08:58,066 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 11:08:58,066 INFO L207 CegarAbsIntRunner]: [0], [34], [43] [2019-01-11 11:08:58,068 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 11:08:58,068 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 11:08:58,078 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 11:08:58,078 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 104 root evaluator evaluations with a maximum evaluation depth of 2. Performed 104 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 11:08:58,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:08:58,079 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 11:08:58,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:08:58,079 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 11:08:58,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:08:58,088 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 11:08:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:08:58,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:08:58,186 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 36 [2019-01-11 11:08:58,190 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 36 treesize of output 42 [2019-01-11 11:08:58,200 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,202 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,203 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 38 treesize of output 52 [2019-01-11 11:08:58,210 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,212 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,214 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,215 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 40 treesize of output 66 [2019-01-11 11:08:58,220 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,225 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,228 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,230 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,231 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 42 treesize of output 84 [2019-01-11 11:08:58,257 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,275 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,300 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,321 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,336 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,336 INFO L303 Elim1Store]: Index analysis took 102 ms [2019-01-11 11:08:58,337 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 44 treesize of output 106 [2019-01-11 11:08:58,365 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,366 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,367 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,368 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,369 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,371 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,373 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 46 treesize of output 132 [2019-01-11 11:08:58,415 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,437 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,463 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,486 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,512 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,535 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,559 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,559 INFO L303 Elim1Store]: Index analysis took 182 ms [2019-01-11 11:08:58,561 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 48 treesize of output 162 [2019-01-11 11:08:58,593 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,614 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,642 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,663 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,680 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,681 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,682 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,685 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:58,685 INFO L303 Elim1Store]: Index analysis took 120 ms [2019-01-11 11:08:58,687 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 196 [2019-01-11 11:08:58,728 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 195 [2019-01-11 11:08:58,730 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-11 11:08:58,861 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:58,966 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:59,084 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:59,152 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:59,245 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:59,280 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:59,309 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:59,334 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:59,361 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:08:59,490 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,491 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 146 treesize of output 140 [2019-01-11 11:08:59,554 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,555 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,557 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 127 [2019-01-11 11:08:59,672 WARN L181 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-01-11 11:08:59,676 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,677 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,678 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,679 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,681 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 123 [2019-01-11 11:08:59,750 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,751 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,752 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,754 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,761 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,762 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,763 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 88 treesize of output 122 [2019-01-11 11:08:59,872 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,872 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,873 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,874 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,875 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,876 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,877 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,878 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:08:59,880 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 73 treesize of output 130 [2019-01-11 11:08:59,992 WARN L181 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-01-11 11:09:00,029 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,051 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,065 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,066 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,066 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,067 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,068 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,069 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,070 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,071 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,073 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 61 treesize of output 145 [2019-01-11 11:09:00,214 WARN L181 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-01-11 11:09:00,219 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,229 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,230 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,231 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,231 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,232 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,234 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,235 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,236 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,238 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,239 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,240 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,242 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 167 [2019-01-11 11:09:00,462 WARN L181 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-01-11 11:09:00,467 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,471 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,471 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,472 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,473 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,474 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,474 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,476 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,477 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,478 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,479 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,480 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,482 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,483 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:00,485 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 46 treesize of output 145 [2019-01-11 11:09:00,487 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-11 11:09:00,570 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:00,654 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:00,812 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:00,898 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:00,990 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:01,080 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:01,170 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:01,314 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-11 11:09:01,315 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-01-11 11:09:01,425 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:01,426 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 11:09:01,427 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:09:01,562 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 11:09:01,563 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-01-11 11:09:01,696 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 11:09:01,697 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:09:01,753 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 11:09:01,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 11:09:01,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-11 11:09:01,771 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 11:09:01,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 11:09:01,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 11:09:01,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-01-11 11:09:01,772 INFO L87 Difference]: Start difference. First operand 26 states and 57 transitions. Second operand 6 states. [2019-01-11 11:09:50,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:09:50,308 INFO L93 Difference]: Finished difference Result 79 states and 126 transitions. [2019-01-11 11:09:50,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-11 11:09:50,309 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-11 11:09:50,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:09:50,310 INFO L225 Difference]: With dead ends: 79 [2019-01-11 11:09:50,313 INFO L226 Difference]: Without dead ends: 77 [2019-01-11 11:09:50,314 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-01-11 11:09:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-01-11 11:09:50,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 31. [2019-01-11 11:09:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-11 11:09:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 75 transitions. [2019-01-11 11:09:50,332 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 75 transitions. Word has length 3 [2019-01-11 11:09:50,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:09:50,332 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 75 transitions. [2019-01-11 11:09:50,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-11 11:09:50,333 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 75 transitions. [2019-01-11 11:09:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:09:50,333 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:09:50,334 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:09:50,335 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:09:50,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:09:50,335 INFO L82 PathProgramCache]: Analyzing trace with hash 30020, now seen corresponding path program 1 times [2019-01-11 11:09:50,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:09:50,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:09:50,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:09:50,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:09:50,338 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:09:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:09:50,456 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 11:09:50,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:09:50,457 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:09:50,457 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 11:09:50,457 INFO L207 CegarAbsIntRunner]: [0], [6], [43] [2019-01-11 11:09:50,458 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 11:09:50,458 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 11:09:50,468 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 11:09:50,468 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 104 root evaluator evaluations with a maximum evaluation depth of 2. Performed 104 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 11:09:50,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:09:50,468 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 11:09:50,468 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:09:50,469 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 11:09:50,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:09:50,482 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 11:09:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:09:50,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:09:50,535 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 36 [2019-01-11 11:09:50,540 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 36 treesize of output 42 [2019-01-11 11:09:50,546 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,549 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,550 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 38 treesize of output 52 [2019-01-11 11:09:50,554 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,557 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,560 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,561 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 40 treesize of output 66 [2019-01-11 11:09:50,568 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,571 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,574 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,577 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,578 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 42 treesize of output 84 [2019-01-11 11:09:50,583 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,586 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,588 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,589 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,590 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,591 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 44 treesize of output 106 [2019-01-11 11:09:50,633 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,648 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,650 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,652 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,654 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,657 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,659 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 46 treesize of output 132 [2019-01-11 11:09:50,698 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,704 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,705 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,706 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,707 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,708 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,710 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,712 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 48 treesize of output 162 [2019-01-11 11:09:50,754 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,763 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,764 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,766 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,768 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,770 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,771 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,773 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:50,775 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 196 [2019-01-11 11:09:50,797 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 195 [2019-01-11 11:09:50,798 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-11 11:09:50,912 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:51,007 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:51,075 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:51,130 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:51,176 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:51,213 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:51,245 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:51,272 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:51,295 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:51,358 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,359 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 146 treesize of output 140 [2019-01-11 11:09:51,430 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,431 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,432 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 127 [2019-01-11 11:09:51,508 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,509 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,510 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,512 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,513 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 123 [2019-01-11 11:09:51,600 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,601 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,601 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,602 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,603 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,605 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,606 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 88 treesize of output 122 [2019-01-11 11:09:51,701 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,703 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,704 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,705 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,706 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,708 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,709 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,710 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,712 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 73 treesize of output 130 [2019-01-11 11:09:51,834 WARN L181 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-01-11 11:09:51,840 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,840 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,841 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,842 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,843 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,845 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,846 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,847 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,848 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,852 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:51,853 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 61 treesize of output 145 [2019-01-11 11:09:51,999 WARN L181 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-01-11 11:09:52,048 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,049 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,052 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,053 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,054 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,054 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,055 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,057 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,058 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,059 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,060 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,061 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,064 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 167 [2019-01-11 11:09:52,276 WARN L181 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-01-11 11:09:52,280 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,281 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,283 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,284 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,285 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,286 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,288 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,289 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,290 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,292 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,294 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,295 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,296 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:52,298 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 46 treesize of output 145 [2019-01-11 11:09:52,299 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-11 11:09:52,381 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:52,463 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:52,548 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:52,635 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:52,724 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:52,811 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:52,901 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:53,087 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-11 11:09:53,088 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 11 variables, input treesize:182, output treesize:195 [2019-01-11 11:09:53,169 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:53,171 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 11:09:53,172 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:09:53,552 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 11:09:53,553 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-01-11 11:09:53,573 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 11:09:53,573 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:09:53,577 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 11:09:53,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-01-11 11:09:53,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 5 [2019-01-11 11:09:53,596 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-11 11:09:53,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-11 11:09:53,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-11 11:09:53,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-01-11 11:09:53,596 INFO L87 Difference]: Start difference. First operand 31 states and 75 transitions. Second operand 4 states. [2019-01-11 11:09:53,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:09:53,707 INFO L93 Difference]: Finished difference Result 37 states and 121 transitions. [2019-01-11 11:09:53,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-11 11:09:53,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-01-11 11:09:53,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:09:53,709 INFO L225 Difference]: With dead ends: 37 [2019-01-11 11:09:53,710 INFO L226 Difference]: Without dead ends: 36 [2019-01-11 11:09:53,710 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-01-11 11:09:53,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-11 11:09:53,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-01-11 11:09:53,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-01-11 11:09:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 120 transitions. [2019-01-11 11:09:53,721 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 120 transitions. Word has length 3 [2019-01-11 11:09:53,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:09:53,721 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 120 transitions. [2019-01-11 11:09:53,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-11 11:09:53,721 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 120 transitions. [2019-01-11 11:09:53,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:09:53,722 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:09:53,722 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:09:53,722 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:09:53,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:09:53,723 INFO L82 PathProgramCache]: Analyzing trace with hash 31074, now seen corresponding path program 1 times [2019-01-11 11:09:53,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:09:53,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:09:53,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:09:53,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:09:53,725 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:09:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:09:53,799 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 11:09:53,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:09:53,800 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:09:53,800 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 11:09:53,800 INFO L207 CegarAbsIntRunner]: [0], [40], [43] [2019-01-11 11:09:53,802 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 11:09:53,802 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 11:09:53,810 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 11:09:53,810 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 104 root evaluator evaluations with a maximum evaluation depth of 2. Performed 104 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 11:09:53,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:09:53,810 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 11:09:53,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:09:53,811 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 11:09:53,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:09:53,821 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 11:09:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:09:53,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:09:53,895 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:53,896 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 178 treesize of output 169 [2019-01-11 11:09:53,970 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:53,971 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:53,972 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 153 [2019-01-11 11:09:54,051 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,052 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,054 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,055 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,056 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 146 [2019-01-11 11:09:54,137 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,138 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,138 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,139 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,140 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,141 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,143 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 111 treesize of output 142 [2019-01-11 11:09:54,240 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,241 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,242 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,244 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,245 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,247 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,248 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,249 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,251 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 93 treesize of output 147 [2019-01-11 11:09:54,376 WARN L181 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-01-11 11:09:54,381 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,381 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,383 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,384 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,385 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,387 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,388 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,389 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,390 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,392 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,393 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 78 treesize of output 159 [2019-01-11 11:09:54,563 WARN L181 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-01-11 11:09:54,572 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,574 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,576 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,578 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,581 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,584 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,586 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,588 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,589 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,593 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,595 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,597 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,598 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 178 [2019-01-11 11:09:54,840 WARN L181 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-01-11 11:09:54,847 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,849 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,851 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,854 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,856 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,858 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,860 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,862 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,865 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,868 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,870 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,873 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,876 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,878 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:54,879 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 204 [2019-01-11 11:09:55,150 WARN L181 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 92 [2019-01-11 11:09:55,155 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,156 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,157 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,158 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,158 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,159 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,161 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,162 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,163 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,164 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,166 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,167 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,168 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,170 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,171 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,172 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:55,174 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 181 [2019-01-11 11:09:55,175 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-11 11:09:55,290 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:55,411 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:55,565 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:55,690 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:55,818 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:55,947 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:56,077 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:56,208 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:56,362 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2019-01-11 11:09:56,367 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 42 [2019-01-11 11:09:56,373 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 52 [2019-01-11 11:09:56,377 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 30 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 66 [2019-01-11 11:09:56,392 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 35 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 84 [2019-01-11 11:09:56,396 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 39 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 106 [2019-01-11 11:09:56,402 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 42 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 132 [2019-01-11 11:09:56,427 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 44 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 162 [2019-01-11 11:09:56,436 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 45 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 196 [2019-01-11 11:09:56,445 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 231 [2019-01-11 11:09:56,446 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2019-01-11 11:09:56,680 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:56,764 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:56,830 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:56,891 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:56,938 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:56,977 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:57,004 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:57,027 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:57,048 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:09:57,237 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-11 11:09:57,237 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 10 variables, input treesize:214, output treesize:231 [2019-01-11 11:09:57,313 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:09:57,314 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 237 [2019-01-11 11:09:57,316 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:09:57,609 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-11 11:09:57,609 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:241, output treesize:195 [2019-01-11 11:09:57,637 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 11:09:57,638 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:09:57,647 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 11:09:57,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 11:09:57,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-11 11:09:57,667 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 11:09:57,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 11:09:57,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 11:09:57,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-11 11:09:57,668 INFO L87 Difference]: Start difference. First operand 35 states and 120 transitions. Second operand 6 states. [2019-01-11 11:10:10,257 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 11:10:10,261 INFO L168 Benchmark]: Toolchain (without parser) took 129700.80 ms. Allocated memory was 138.4 MB in the beginning and 432.0 MB in the end (delta: 293.6 MB). Free memory was 105.7 MB in the beginning and 252.8 MB in the end (delta: -147.1 MB). Peak memory consumption was 146.5 MB. Max. memory is 7.1 GB. [2019-01-11 11:10:10,262 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory is still 107.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-11 11:10:10,262 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.56 ms. Allocated memory is still 138.4 MB. Free memory was 105.7 MB in the beginning and 103.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-01-11 11:10:10,263 INFO L168 Benchmark]: Boogie Preprocessor took 37.87 ms. Allocated memory is still 138.4 MB. Free memory was 103.3 MB in the beginning and 102.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-01-11 11:10:10,263 INFO L168 Benchmark]: RCFGBuilder took 554.40 ms. Allocated memory is still 138.4 MB. Free memory was 101.8 MB in the beginning and 87.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-01-11 11:10:10,263 INFO L168 Benchmark]: TraceAbstraction took 129038.23 ms. Allocated memory was 138.4 MB in the beginning and 432.0 MB in the end (delta: 293.6 MB). Free memory was 87.3 MB in the beginning and 252.8 MB in the end (delta: -165.5 MB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. [2019-01-11 11:10:10,269 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 0.17 ms. Allocated memory is still 138.4 MB. Free memory is still 107.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.56 ms. Allocated memory is still 138.4 MB. Free memory was 105.7 MB in the beginning and 103.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.87 ms. Allocated memory is still 138.4 MB. Free memory was 103.3 MB in the beginning and 102.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 554.40 ms. Allocated memory is still 138.4 MB. Free memory was 101.8 MB in the beginning and 87.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 129038.23 ms. Allocated memory was 138.4 MB in the beginning and 432.0 MB in the end (delta: 293.6 MB). Free memory was 87.3 MB in the beginning and 252.8 MB in the end (delta: -165.5 MB). Peak memory consumption was 128.1 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...