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-8-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-a9d37a5-m [2019-02-28 10:23:20,014 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-28 10:23:20,016 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-28 10:23:20,038 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-02-28 10:23:20,099 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 [2019-02-28 10:23:20,121 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-28 10:23:20,122 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-28 10:23:20,123 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-28 10:23:20,123 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-28 10:23:20,123 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-28 10:23:20,123 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-28 10:23:20,124 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-28 10:23:20,124 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-28 10:23:20,124 INFO L133 SettingsManager]: * Explicit value domain=true [2019-02-28 10:23:20,124 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-28 10:23:20,124 INFO L133 SettingsManager]: * Octagon Domain=false [2019-02-28 10:23:20,125 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-02-28 10:23:20,127 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-28 10:23:20,127 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-28 10:23:20,128 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-28 10:23:20,128 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-28 10:23:20,129 INFO L133 SettingsManager]: * Use SBE=true [2019-02-28 10:23:20,130 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-28 10:23:20,131 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-28 10:23:20,131 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-28 10:23:20,131 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-28 10:23:20,131 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-28 10:23:20,131 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-28 10:23:20,132 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-28 10:23:20,132 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-28 10:23:20,132 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-28 10:23:20,132 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-28 10:23:20,133 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-28 10:23:20,133 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-28 10:23:20,133 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-28 10:23:20,133 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-28 10:23:20,134 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 10:23:20,134 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-28 10:23:20,134 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-28 10:23:20,134 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-28 10:23:20,134 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-28 10:23:20,135 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-28 10:23:20,135 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in [2019-02-28 10:23:20,135 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-28 10:23:20,136 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-28 10:23:20,173 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-28 10:23:20,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-28 10:23:20,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-28 10:23:20,195 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-28 10:23:20,195 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-28 10:23:20,196 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-unlimited.bpl [2019-02-28 10:23:20,197 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-unlimited.bpl' [2019-02-28 10:23:20,247 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-28 10:23:20,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-28 10:23:20,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-28 10:23:20,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-28 10:23:20,250 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-28 10:23:20,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:20" (1/1) ... [2019-02-28 10:23:20,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:20" (1/1) ... [2019-02-28 10:23:20,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-28 10:23:20,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-28 10:23:20,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-28 10:23:20,321 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-28 10:23:20,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:20" (1/1) ... [2019-02-28 10:23:20,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:20" (1/1) ... [2019-02-28 10:23:20,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:20" (1/1) ... [2019-02-28 10:23:20,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:20" (1/1) ... [2019-02-28 10:23:20,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:20" (1/1) ... [2019-02-28 10:23:20,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:20" (1/1) ... [2019-02-28 10:23:20,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:20" (1/1) ... [2019-02-28 10:23:20,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-28 10:23:20,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-28 10:23:20,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-28 10:23:20,359 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-28 10:23:20,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 10:23:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-28 10:23:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-28 10:23:20,803 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-28 10:23:20,804 INFO L286 CfgBuilder]: Removed 19 assue(true) statements. [2019-02-28 10:23:20,805 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:23:20 BoogieIcfgContainer [2019-02-28 10:23:20,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-28 10:23:20,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-28 10:23:20,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-28 10:23:20,809 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-28 10:23:20,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:20" (1/2) ... [2019-02-28 10:23:20,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160b39a1 and model type speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.02 10:23:20, skipping insertion in model container [2019-02-28 10:23:20,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:23:20" (2/2) ... [2019-02-28 10:23:20,813 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-8-unlimited.bpl [2019-02-28 10:23:20,823 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-28 10:23:20,839 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-02-28 10:23:20,855 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-02-28 10:23:20,887 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-28 10:23:20,887 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-28 10:23:20,888 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-28 10:23:20,888 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-28 10:23:20,888 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-28 10:23:20,888 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-28 10:23:20,888 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-28 10:23:20,889 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-28 10:23:20,907 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-02-28 10:23:20,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-02-28 10:23:20,921 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:23:20,922 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-02-28 10:23:20,925 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:23:20,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:20,931 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-02-28 10:23:20,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:23:20,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:20,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:20,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:20,980 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:23:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:21,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-28 10:23:21,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-02-28 10:23:21,159 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 10:23:21,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-28 10:23:21,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-28 10:23:21,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 10:23:21,176 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-02-28 10:23:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:23:21,409 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2019-02-28 10:23:21,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-28 10:23:21,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-02-28 10:23:21,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:23:21,423 INFO L225 Difference]: With dead ends: 37 [2019-02-28 10:23:21,423 INFO L226 Difference]: Without dead ends: 32 [2019-02-28 10:23:21,426 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 10:23:21,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-02-28 10:23:21,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 18. [2019-02-28 10:23:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-02-28 10:23:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 33 transitions. [2019-02-28 10:23:21,457 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 33 transitions. Word has length 2 [2019-02-28 10:23:21,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:23:21,459 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 33 transitions. [2019-02-28 10:23:21,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-28 10:23:21,459 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 33 transitions. [2019-02-28 10:23:21,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:23:21,460 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:23:21,460 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:23:21,460 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:23:21,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:21,461 INFO L82 PathProgramCache]: Analyzing trace with hash 30818, now seen corresponding path program 1 times [2019-02-28 10:23:21,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:23:21,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:21,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:21,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:21,475 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:23:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:21,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:21,649 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:23:21,650 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:23:21,652 INFO L207 CegarAbsIntRunner]: [0], [32], [35] [2019-02-28 10:23:21,689 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-28 10:23:21,690 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:23:21,759 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:23:21,760 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 84 root evaluator evaluations with a maximum evaluation depth of 2. Performed 84 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-28 10:23:21,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:21,765 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:23:21,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:21,766 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-02-28 10:23:21,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:21,784 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:23:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:21,809 WARN L254 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 20 conjunts are in the unsatisfiable core [2019-02-28 10:23:21,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:23:21,890 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2019-02-28 10:23:21,905 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,907 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-02-28 10:23:21,929 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,937 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,939 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,941 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2019-02-28 10:23:21,961 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,963 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,965 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,975 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,977 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,982 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,984 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2019-02-28 10:23:22,010 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,015 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,016 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,017 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,022 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,023 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,028 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,030 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,035 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,038 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,040 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-02-28 10:23:22,056 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,057 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,060 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,062 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,064 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,067 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,069 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,078 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,081 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,083 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,085 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,109 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,133 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,157 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,184 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,184 INFO L289 Elim1Store]: Index analysis took 129 ms [2019-02-28 10:23:22,188 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2019-02-28 10:23:22,235 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,260 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,285 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,305 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,311 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,313 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,315 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,317 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,319 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,325 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,327 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,329 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,331 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,333 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,335 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,339 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,341 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,346 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,347 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,349 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,354 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,354 INFO L289 Elim1Store]: Index analysis took 138 ms [2019-02-28 10:23:22,356 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2019-02-28 10:23:22,396 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,398 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,402 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,404 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,407 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,409 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,411 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,413 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,424 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,449 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,475 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,500 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,508 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,510 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,512 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,518 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,520 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,524 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,526 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,528 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,529 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,534 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,535 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,536 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,538 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,541 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,542 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,543 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,543 INFO L289 Elim1Store]: Index analysis took 171 ms [2019-02-28 10:23:22,546 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2019-02-28 10:23:22,548 INFO L315 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,570 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,673 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,740 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,762 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,816 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,839 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,979 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,528 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2019-02-28 10:23:23,529 INFO L315 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,544 INFO L315 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,568 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,608 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,651 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,739 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,823 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,933 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:24,099 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:24,099 INFO L209 ElimStorePlain]: Needed 17 recursive calls to eliminate 8 variables, input treesize:147, output treesize:153 [2019-02-28 10:23:24,174 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 46 [2019-02-28 10:23:24,175 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:24,403 INFO L315 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:24,404 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:127 [2019-02-28 10:23:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:24,467 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:23:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:24,513 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:23:24,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:23:24,513 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:23:24,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:23:24,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:23:24,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:23:24,515 INFO L87 Difference]: Start difference. First operand 18 states and 33 transitions. Second operand 6 states. [2019-02-28 10:23:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:23:35,798 INFO L93 Difference]: Finished difference Result 63 states and 92 transitions. [2019-02-28 10:23:35,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-28 10:23:35,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-28 10:23:35,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:23:35,800 INFO L225 Difference]: With dead ends: 63 [2019-02-28 10:23:35,801 INFO L226 Difference]: Without dead ends: 60 [2019-02-28 10:23:35,802 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 [2019-02-28 10:23:35,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-02-28 10:23:35,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 25. [2019-02-28 10:23:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-02-28 10:23:35,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 53 transitions. [2019-02-28 10:23:35,809 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 53 transitions. Word has length 3 [2019-02-28 10:23:35,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:23:35,809 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 53 transitions. [2019-02-28 10:23:35,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-28 10:23:35,809 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 53 transitions. [2019-02-28 10:23:35,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:23:35,810 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:23:35,810 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:23:35,811 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:23:35,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:35,811 INFO L82 PathProgramCache]: Analyzing trace with hash 30384, now seen corresponding path program 1 times [2019-02-28 10:23:35,811 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:23:35,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:35,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:35,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:35,813 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:23:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:35,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:35,905 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:23:35,905 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:23:35,905 INFO L207 CegarAbsIntRunner]: [0], [18], [35] [2019-02-28 10:23:35,907 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-28 10:23:35,907 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:23:35,915 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:23:35,915 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 84 root evaluator evaluations with a maximum evaluation depth of 2. Performed 84 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-28 10:23:35,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:35,916 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:23:35,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:35,916 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-02-28 10:23:35,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:35,925 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:23:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:35,932 WARN L254 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-02-28 10:23:35,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:23:35,949 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2019-02-28 10:23:35,955 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:35,956 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-02-28 10:23:35,961 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:35,963 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:35,966 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:35,967 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2019-02-28 10:23:35,974 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:35,976 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:35,977 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:35,979 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:35,987 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:35,994 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:35,995 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2019-02-28 10:23:36,031 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,050 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,052 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,054 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,056 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,058 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,060 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,062 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,064 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,066 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,067 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-02-28 10:23:36,078 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,079 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,080 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,081 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,085 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,087 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,090 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,091 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,092 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,092 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,094 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,095 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,096 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,097 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,098 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,100 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2019-02-28 10:23:36,140 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,162 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,184 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,198 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,200 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,202 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,203 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,203 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,205 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,206 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,207 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,208 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,209 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,210 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,212 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,213 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,214 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,216 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,217 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,219 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,220 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,220 INFO L289 Elim1Store]: Index analysis took 101 ms [2019-02-28 10:23:36,222 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2019-02-28 10:23:36,227 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,228 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,228 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,229 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,231 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,232 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,233 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,235 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,236 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,237 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,239 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,240 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,243 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,246 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,247 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,248 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,249 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,250 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,252 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,253 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,254 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:36,321 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 42 treesize of output 62 [2019-02-28 10:23:36,324 INFO L315 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,341 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,361 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,381 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,407 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,427 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,445 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,464 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,600 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2019-02-28 10:23:36,601 INFO L315 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,633 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,697 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,725 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,751 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,785 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,845 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:36,928 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:36,929 INFO L209 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:121, output treesize:125 [2019-02-28 10:23:36,994 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2019-02-28 10:23:36,995 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:37,086 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:37,087 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:130, output treesize:98 [2019-02-28 10:23:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:37,174 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:23:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:37,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:23:37,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:23:37,203 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:23:37,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:23:37,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:23:37,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:23:37,204 INFO L87 Difference]: Start difference. First operand 25 states and 53 transitions. Second operand 6 states. [2019-02-28 10:23:38,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:23:38,229 INFO L93 Difference]: Finished difference Result 62 states and 99 transitions. [2019-02-28 10:23:38,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-28 10:23:38,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-28 10:23:38,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:23:38,232 INFO L225 Difference]: With dead ends: 62 [2019-02-28 10:23:38,232 INFO L226 Difference]: Without dead ends: 60 [2019-02-28 10:23:38,233 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 [2019-02-28 10:23:38,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-02-28 10:23:38,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 26. [2019-02-28 10:23:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-02-28 10:23:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 61 transitions. [2019-02-28 10:23:38,240 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 61 transitions. Word has length 3 [2019-02-28 10:23:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:23:38,240 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 61 transitions. [2019-02-28 10:23:38,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-28 10:23:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 61 transitions. [2019-02-28 10:23:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:23:38,241 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:23:38,241 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:23:38,241 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:23:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:38,242 INFO L82 PathProgramCache]: Analyzing trace with hash 30944, now seen corresponding path program 1 times [2019-02-28 10:23:38,242 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:23:38,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:38,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:38,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:38,243 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:23:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:38,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-28 10:23:38,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-02-28 10:23:38,337 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 10:23:38,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-28 10:23:38,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-28 10:23:38,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 10:23:38,338 INFO L87 Difference]: Start difference. First operand 26 states and 61 transitions. Second operand 3 states. [2019-02-28 10:23:38,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:23:38,407 INFO L93 Difference]: Finished difference Result 31 states and 61 transitions. [2019-02-28 10:23:38,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-28 10:23:38,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-02-28 10:23:38,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:23:38,408 INFO L225 Difference]: With dead ends: 31 [2019-02-28 10:23:38,408 INFO L226 Difference]: Without dead ends: 30 [2019-02-28 10:23:38,408 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 10:23:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-02-28 10:23:38,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2019-02-28 10:23:38,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-02-28 10:23:38,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 60 transitions. [2019-02-28 10:23:38,417 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 60 transitions. Word has length 3 [2019-02-28 10:23:38,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:23:38,417 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 60 transitions. [2019-02-28 10:23:38,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-28 10:23:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 60 transitions. [2019-02-28 10:23:38,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:23:38,419 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:23:38,420 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:23:38,420 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:23:38,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:38,420 INFO L82 PathProgramCache]: Analyzing trace with hash 30012, now seen corresponding path program 1 times [2019-02-28 10:23:38,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:23:38,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:38,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:38,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:38,422 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:23:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:38,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:38,599 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:23:38,599 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:23:38,599 INFO L207 CegarAbsIntRunner]: [0], [6], [35] [2019-02-28 10:23:38,601 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-28 10:23:38,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:23:38,608 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:23:38,608 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 84 root evaluator evaluations with a maximum evaluation depth of 2. Performed 84 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-28 10:23:38,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:38,609 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:23:38,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:38,609 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 [2019-02-28 10:23:38,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:38,624 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:23:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:38,630 WARN L254 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-02-28 10:23:38,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:23:38,739 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2019-02-28 10:23:38,740 INFO L315 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:38,748 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:38,759 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:38,772 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:38,793 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:38,820 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:38,864 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:39,153 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2019-02-28 10:23:39,157 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-02-28 10:23:39,177 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2019-02-28 10:23:39,189 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2019-02-28 10:23:39,208 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 20 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-02-28 10:23:39,220 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2019-02-28 10:23:39,239 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2019-02-28 10:23:39,336 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 42 treesize of output 62 [2019-02-28 10:23:39,338 INFO L315 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:39,397 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:39,418 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:39,435 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:39,454 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:39,469 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:39,484 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:39,500 INFO L315 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:39,577 INFO L315 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:39,577 INFO L209 ElimStorePlain]: Needed 16 recursive calls to eliminate 9 variables, input treesize:121, output treesize:125 [2019-02-28 10:23:39,617 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2019-02-28 10:23:39,617 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:39,686 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:39,687 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:130, output treesize:96 [2019-02-28 10:23:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:39,703 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:23:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:39,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-02-28 10:23:39,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 5 [2019-02-28 10:23:39,728 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 10:23:39,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-02-28 10:23:39,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-02-28 10:23:39,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-02-28 10:23:39,729 INFO L87 Difference]: Start difference. First operand 26 states and 60 transitions. Second operand 4 states. [2019-02-28 10:23:39,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:23:39,866 INFO L93 Difference]: Finished difference Result 32 states and 98 transitions. [2019-02-28 10:23:39,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-02-28 10:23:39,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-02-28 10:23:39,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:23:39,868 INFO L225 Difference]: With dead ends: 32 [2019-02-28 10:23:39,868 INFO L226 Difference]: Without dead ends: 31 [2019-02-28 10:23:39,869 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 [2019-02-28 10:23:39,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-02-28 10:23:39,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-02-28 10:23:39,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-02-28 10:23:39,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 97 transitions. [2019-02-28 10:23:39,877 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 97 transitions. Word has length 3 [2019-02-28 10:23:39,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:23:39,878 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 97 transitions. [2019-02-28 10:23:39,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-02-28 10:23:39,878 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 97 transitions. [2019-02-28 10:23:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:23:39,879 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:23:39,879 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:23:39,879 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:23:39,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:39,879 INFO L82 PathProgramCache]: Analyzing trace with hash 30136, now seen corresponding path program 1 times [2019-02-28 10:23:39,880 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:23:39,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:39,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:39,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:39,881 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:23:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:39,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:39,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:39,994 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:23:39,994 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:23:39,994 INFO L207 CegarAbsIntRunner]: [0], [10], [35] [2019-02-28 10:23:39,997 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-28 10:23:39,997 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:23:40,005 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:23:40,005 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 84 root evaluator evaluations with a maximum evaluation depth of 2. Performed 84 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-28 10:23:40,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:40,006 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:23:40,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:40,006 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 [2019-02-28 10:23:40,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:40,021 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:23:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:40,027 WARN L254 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-02-28 10:23:40,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:23:40,043 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2019-02-28 10:23:40,052 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,053 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-02-28 10:23:40,057 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,058 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,060 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,061 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2019-02-28 10:23:40,086 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,088 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,090 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,092 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,094 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,097 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,098 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2019-02-28 10:23:40,101 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,103 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,105 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,107 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,109 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,111 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,113 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,115 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,117 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,118 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,120 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-02-28 10:23:40,124 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,126 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,128 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,130 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,132 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,134 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,135 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,137 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,138 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,139 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,141 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,142 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,143 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,145 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,146 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,148 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2019-02-28 10:23:40,171 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,173 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,175 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,176 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,177 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,177 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,178 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,179 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,181 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,182 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,184 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,185 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,187 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,188 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,190 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,191 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,192 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,194 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,195 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,197 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,198 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,200 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2019-02-28 10:23:40,205 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,206 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,207 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,209 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,210 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,212 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,213 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,214 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,216 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,217 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,219 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,220 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,222 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,223 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,258 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,264 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,265 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,266 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,267 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,268 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,269 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:40,326 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 42 treesize of output 62 [2019-02-28 10:23:40,328 INFO L315 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,346 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,365 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,386 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,406 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,427 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,447 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,468 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,569 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2019-02-28 10:23:40,570 INFO L315 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,576 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,587 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,611 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,651 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,699 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,751 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,839 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:40,839 INFO L209 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:121, output treesize:125 [2019-02-28 10:23:40,900 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2019-02-28 10:23:40,901 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:40,980 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:40,981 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:130, output treesize:98 [2019-02-28 10:23:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:41,003 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:23:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:41,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:23:41,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:23:41,034 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:23:41,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:23:41,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:23:41,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:23:41,035 INFO L87 Difference]: Start difference. First operand 30 states and 97 transitions. Second operand 6 states. [2019-02-28 10:23:41,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:23:41,976 INFO L93 Difference]: Finished difference Result 65 states and 143 transitions. [2019-02-28 10:23:41,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-28 10:23:41,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-28 10:23:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:23:41,978 INFO L225 Difference]: With dead ends: 65 [2019-02-28 10:23:41,978 INFO L226 Difference]: Without dead ends: 64 [2019-02-28 10:23:41,979 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-02-28 10:23:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-02-28 10:23:41,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 32. [2019-02-28 10:23:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-02-28 10:23:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 115 transitions. [2019-02-28 10:23:41,990 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 115 transitions. Word has length 3 [2019-02-28 10:23:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:23:41,990 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 115 transitions. [2019-02-28 10:23:41,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-28 10:23:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 115 transitions. [2019-02-28 10:23:41,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:23:41,991 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:23:41,991 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:23:41,992 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:23:41,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:41,992 INFO L82 PathProgramCache]: Analyzing trace with hash 30632, now seen corresponding path program 1 times [2019-02-28 10:23:41,992 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:23:41,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:41,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:41,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:41,994 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:23:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:42,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:42,107 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:23:42,108 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:23:42,108 INFO L207 CegarAbsIntRunner]: [0], [26], [35] [2019-02-28 10:23:42,110 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-28 10:23:42,110 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:23:42,116 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:23:42,116 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 84 root evaluator evaluations with a maximum evaluation depth of 2. Performed 84 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-28 10:23:42,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:42,117 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:23:42,117 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:42,117 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-02-28 10:23:42,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:42,126 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:23:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:42,150 WARN L254 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-02-28 10:23:42,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:23:42,155 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2019-02-28 10:23:42,159 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,160 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-02-28 10:23:42,166 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,168 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,170 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,172 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2019-02-28 10:23:42,177 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,179 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,181 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,183 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,185 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,187 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,189 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2019-02-28 10:23:42,195 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,197 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,199 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,201 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,203 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,204 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,205 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,207 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,209 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,211 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,212 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-02-28 10:23:42,221 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,222 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,223 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,224 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,225 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,226 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,227 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,229 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,230 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,231 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,233 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,234 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,236 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,237 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,239 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,240 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2019-02-28 10:23:42,249 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,250 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,251 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,251 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,253 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,254 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,255 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,257 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,258 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,260 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,261 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,262 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,264 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,265 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,267 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,268 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,270 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,271 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,272 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,274 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,275 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,277 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2019-02-28 10:23:42,282 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,282 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,284 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,285 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,287 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,288 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,289 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,291 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,292 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,294 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,295 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,296 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,298 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,299 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,301 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,302 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,303 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,305 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,306 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,308 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,309 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:42,386 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 42 treesize of output 62 [2019-02-28 10:23:42,387 INFO L315 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,494 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,513 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,533 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,552 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,574 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,594 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,617 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,769 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2019-02-28 10:23:42,769 INFO L315 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,799 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,814 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,836 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,862 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,904 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:42,951 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:43,040 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:43,041 INFO L209 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:121, output treesize:125 [2019-02-28 10:23:43,237 WARN L181 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-02-28 10:23:43,257 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2019-02-28 10:23:43,258 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:43,479 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:43,480 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:130, output treesize:98 [2019-02-28 10:23:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:43,496 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:23:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:43,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:23:43,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:23:43,527 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:23:43,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:23:43,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:23:43,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:23:43,528 INFO L87 Difference]: Start difference. First operand 32 states and 115 transitions. Second operand 6 states. [2019-02-28 10:23:44,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:23:44,285 INFO L93 Difference]: Finished difference Result 67 states and 161 transitions. [2019-02-28 10:23:44,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-28 10:23:44,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-28 10:23:44,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:23:44,287 INFO L225 Difference]: With dead ends: 67 [2019-02-28 10:23:44,287 INFO L226 Difference]: Without dead ends: 65 [2019-02-28 10:23:44,288 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 [2019-02-28 10:23:44,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-02-28 10:23:44,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 34. [2019-02-28 10:23:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-02-28 10:23:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 132 transitions. [2019-02-28 10:23:44,297 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 132 transitions. Word has length 3 [2019-02-28 10:23:44,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:23:44,297 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 132 transitions. [2019-02-28 10:23:44,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-28 10:23:44,298 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 132 transitions. [2019-02-28 10:23:44,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-02-28 10:23:44,298 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:23:44,298 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-02-28 10:23:44,299 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:23:44,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:44,299 INFO L82 PathProgramCache]: Analyzing trace with hash 954866, now seen corresponding path program 1 times [2019-02-28 10:23:44,299 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:23:44,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:44,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:44,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:44,300 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:23:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:44,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:44,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:44,423 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:23:44,423 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2019-02-28 10:23:44,423 INFO L207 CegarAbsIntRunner]: [0], [18], [32], [35] [2019-02-28 10:23:44,424 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-28 10:23:44,425 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:23:44,430 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:23:44,430 INFO L272 AbstractInterpreter]: Visited 4 different actions 4 times. Never merged. Never widened. Performed 86 root evaluator evaluations with a maximum evaluation depth of 2. Performed 86 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-02-28 10:23:44,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:44,431 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:23:44,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:44,431 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-02-28 10:23:44,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:44,442 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:23:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:44,452 WARN L254 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 21 conjunts are in the unsatisfiable core [2019-02-28 10:23:44,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:23:44,461 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2019-02-28 10:23:44,470 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,471 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-02-28 10:23:44,476 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,477 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,479 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,482 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2019-02-28 10:23:44,491 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,492 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,493 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,494 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,495 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,496 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,498 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2019-02-28 10:23:44,511 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,513 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,515 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,517 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,519 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,521 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,524 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,526 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,528 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,530 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,531 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-02-28 10:23:44,534 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,536 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,537 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,539 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,540 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,541 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,543 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,544 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,546 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,547 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,548 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,550 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,551 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,552 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,554 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,555 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2019-02-28 10:23:44,562 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,563 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,563 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,564 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,565 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,567 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,568 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,570 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,571 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,572 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,574 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,575 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,577 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,578 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,579 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,581 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,582 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,584 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,585 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,586 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,588 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,590 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2019-02-28 10:23:44,631 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,653 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,661 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,663 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,665 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,667 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,667 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,668 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,670 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,671 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,672 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,674 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,675 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,677 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,678 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,679 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,681 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,682 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,684 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,685 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,687 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,688 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,689 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,691 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,692 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,694 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,695 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,696 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:44,698 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2019-02-28 10:23:44,699 INFO L315 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:44,716 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:44,735 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:44,756 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:44,775 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:44,795 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:44,815 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:44,836 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:44,954 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2019-02-28 10:23:44,954 INFO L315 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:44,984 INFO L315 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:45,002 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:45,020 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:45,050 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:45,082 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:45,128 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:45,196 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:45,297 INFO L315 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:45,297 INFO L209 ElimStorePlain]: Needed 17 recursive calls to eliminate 7 variables, input treesize:147, output treesize:153 [2019-02-28 10:23:45,385 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 46 [2019-02-28 10:23:45,386 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:45,483 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:45,484 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:163, output treesize:127 [2019-02-28 10:23:45,591 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 53 treesize of output 55 [2019-02-28 10:23:45,592 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:45,673 INFO L315 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:45,673 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:137, output treesize:109 [2019-02-28 10:23:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:45,745 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:23:45,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:45,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:23:45,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2019-02-28 10:23:45,820 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:23:45,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-02-28 10:23:45,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-02-28 10:23:45,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2019-02-28 10:23:45,821 INFO L87 Difference]: Start difference. First operand 34 states and 132 transitions. Second operand 8 states. [2019-02-28 10:23:50,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:23:50,242 INFO L93 Difference]: Finished difference Result 82 states and 191 transitions. [2019-02-28 10:23:50,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-02-28 10:23:50,243 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 4 [2019-02-28 10:23:50,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:23:50,245 INFO L225 Difference]: With dead ends: 82 [2019-02-28 10:23:50,245 INFO L226 Difference]: Without dead ends: 80 [2019-02-28 10:23:50,246 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2019-02-28 10:23:50,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-02-28 10:23:50,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 36. [2019-02-28 10:23:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-02-28 10:23:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 128 transitions. [2019-02-28 10:23:50,257 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 128 transitions. Word has length 4 [2019-02-28 10:23:50,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:23:50,258 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 128 transitions. [2019-02-28 10:23:50,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-02-28 10:23:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 128 transitions. [2019-02-28 10:23:50,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-02-28 10:23:50,258 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:23:50,258 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-02-28 10:23:50,259 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:23:50,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:50,259 INFO L82 PathProgramCache]: Analyzing trace with hash 955426, now seen corresponding path program 1 times [2019-02-28 10:23:50,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:23:50,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:50,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:50,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:50,260 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:23:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:50,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:50,341 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:23:50,341 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2019-02-28 10:23:50,341 INFO L207 CegarAbsIntRunner]: [0], [32], [36], [37] [2019-02-28 10:23:50,342 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-28 10:23:50,343 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:23:50,351 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:23:50,351 INFO L272 AbstractInterpreter]: Visited 4 different actions 4 times. Never merged. Never widened. Performed 86 root evaluator evaluations with a maximum evaluation depth of 2. Performed 86 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-28 10:23:50,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:50,352 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:23:50,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:50,352 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-02-28 10:23:50,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:50,366 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:23:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:50,373 WARN L254 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 13 conjunts are in the unsatisfiable core [2019-02-28 10:23:50,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:23:50,832 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2019-02-28 10:23:50,833 INFO L315 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:50,870 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:50,897 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:50,929 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:50,980 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:51,040 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:51,224 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2019-02-28 10:23:51,235 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 35 [2019-02-28 10:23:51,246 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2019-02-28 10:23:51,250 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 17 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2019-02-28 10:23:51,258 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2019-02-28 10:23:51,263 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2019-02-28 10:23:51,268 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 20 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2019-02-28 10:23:51,327 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 42 treesize of output 62 [2019-02-28 10:23:51,328 INFO L315 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:51,343 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:51,360 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:51,376 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:51,394 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:51,411 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:51,428 INFO L315 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:51,445 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:51,513 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:51,513 INFO L209 ElimStorePlain]: Needed 15 recursive calls to eliminate 8 variables, input treesize:113, output treesize:121 [2019-02-28 10:23:52,230 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 51 treesize of output 95 [2019-02-28 10:23:52,231 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2019-02-28 10:23:52,264 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 128 xjuncts. [2019-02-28 10:23:53,300 INFO L315 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 54 dim-0 vars, and 9 xjuncts. [2019-02-28 10:23:53,301 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:131, output treesize:1043